./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec1_product26.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f 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_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec1_product26.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8 --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 2b84cfef0f3fa5659093b8e6c2d8a82a1b18913f669c8d0a2efe9a0300cc4873 --- 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-e04fb08 [2022-11-16 12:23:24,712 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:23:24,714 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:23:24,760 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:23:24,762 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:23:24,767 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:23:24,770 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:23:24,775 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:23:24,777 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:23:24,783 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:23:24,785 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:23:24,786 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:23:24,788 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:23:24,790 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:23:24,792 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:23:24,794 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:23:24,796 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:23:24,797 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:23:24,799 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:23:24,806 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:23:24,809 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:23:24,810 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:23:24,812 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:23:24,813 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:23:24,822 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:23:24,823 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:23:24,824 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:23:24,826 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:23:24,826 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:23:24,827 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:23:24,828 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:23:24,829 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:23:24,831 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:23:24,833 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:23:24,835 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:23:24,836 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:23:24,836 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:23:24,837 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:23:24,837 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:23:24,838 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:23:24,838 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:23:24,839 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 12:23:24,874 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:23:24,875 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:23:24,875 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:23:24,876 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:23:24,877 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:23:24,877 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:23:24,877 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:23:24,878 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:23:24,878 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:23:24,878 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:23:24,879 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:23:24,879 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:23:24,879 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:23:24,879 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:23:24,880 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:23:24,880 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:23:24,880 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:23:24,880 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:23:24,880 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:23:24,880 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:23:24,880 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:23:24,881 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:23:24,881 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:23:24,881 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:23:24,881 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:23:24,881 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:23:24,881 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:23:24,882 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:23:24,882 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:23:24,882 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:23:24,882 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:23:24,882 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:23:24,882 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:23:24,882 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_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2b84cfef0f3fa5659093b8e6c2d8a82a1b18913f669c8d0a2efe9a0300cc4873 [2022-11-16 12:23:25,213 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:23:25,248 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:23:25,253 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:23:25,254 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:23:25,255 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:23:25,257 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/product-lines/elevator_spec1_product26.cil.c [2022-11-16 12:23:25,344 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/data/a8ec96fa8/69ff76addefb467ab5988c4c09803e7c/FLAG90a194ba4 [2022-11-16 12:23:26,129 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:23:26,136 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/sv-benchmarks/c/product-lines/elevator_spec1_product26.cil.c [2022-11-16 12:23:26,188 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/data/a8ec96fa8/69ff76addefb467ab5988c4c09803e7c/FLAG90a194ba4 [2022-11-16 12:23:26,226 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/data/a8ec96fa8/69ff76addefb467ab5988c4c09803e7c [2022-11-16 12:23:26,232 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:23:26,236 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:23:26,240 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:23:26,241 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:23:26,246 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:23:26,248 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:23:26" (1/1) ... [2022-11-16 12:23:26,251 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6088ea9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:23:26, skipping insertion in model container [2022-11-16 12:23:26,251 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:23:26" (1/1) ... [2022-11-16 12:23:26,263 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:23:26,404 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:23:27,215 WARN L229 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_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/sv-benchmarks/c/product-lines/elevator_spec1_product26.cil.c[55974,55987] [2022-11-16 12:23:27,264 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:23:27,296 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:23:27,516 WARN L229 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_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/sv-benchmarks/c/product-lines/elevator_spec1_product26.cil.c[55974,55987] [2022-11-16 12:23:27,562 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:23:27,599 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:23:27,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:23:27 WrapperNode [2022-11-16 12:23:27,600 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:23:27,602 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:23:27,603 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:23:27,603 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:23:27,614 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:23:27" (1/1) ... [2022-11-16 12:23:27,684 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:23:27" (1/1) ... [2022-11-16 12:23:27,778 INFO L138 Inliner]: procedures = 93, calls = 341, calls flagged for inlining = 28, calls inlined = 24, statements flattened = 850 [2022-11-16 12:23:27,779 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:23:27,780 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:23:27,780 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:23:27,780 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:23:27,794 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:23:27" (1/1) ... [2022-11-16 12:23:27,795 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:23:27" (1/1) ... [2022-11-16 12:23:27,803 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:23:27" (1/1) ... [2022-11-16 12:23:27,803 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:23:27" (1/1) ... [2022-11-16 12:23:27,827 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:23:27" (1/1) ... [2022-11-16 12:23:27,852 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:23:27" (1/1) ... [2022-11-16 12:23:27,870 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:23:27" (1/1) ... [2022-11-16 12:23:27,876 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:23:27" (1/1) ... [2022-11-16 12:23:27,898 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:23:27,899 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:23:27,900 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:23:27,900 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:23:27,901 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:23:27" (1/1) ... [2022-11-16 12:23:27,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:23:27,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:23:27,955 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:23:27,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:23:28,024 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2022-11-16 12:23:28,025 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2022-11-16 12:23:28,025 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:23:28,026 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-11-16 12:23:28,026 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-11-16 12:23:28,026 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2022-11-16 12:23:28,026 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2022-11-16 12:23:28,027 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-11-16 12:23:28,027 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-11-16 12:23:28,028 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-11-16 12:23:28,028 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-11-16 12:23:28,029 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-11-16 12:23:28,029 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-11-16 12:23:28,029 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-16 12:23:28,029 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-16 12:23:28,029 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-16 12:23:28,030 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-16 12:23:28,030 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2022-11-16 12:23:28,030 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2022-11-16 12:23:28,030 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-11-16 12:23:28,031 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-11-16 12:23:28,031 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-11-16 12:23:28,031 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-11-16 12:23:28,031 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-11-16 12:23:28,032 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-11-16 12:23:28,032 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-11-16 12:23:28,032 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-11-16 12:23:28,032 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-11-16 12:23:28,032 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-11-16 12:23:28,033 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-11-16 12:23:28,033 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-11-16 12:23:28,033 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__empty [2022-11-16 12:23:28,033 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__empty [2022-11-16 12:23:28,034 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-11-16 12:23:28,034 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-11-16 12:23:28,035 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-11-16 12:23:28,035 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-11-16 12:23:28,035 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-11-16 12:23:28,035 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-11-16 12:23:28,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:23:28,036 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-11-16 12:23:28,036 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-11-16 12:23:28,036 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-11-16 12:23:28,037 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-11-16 12:23:28,037 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-11-16 12:23:28,037 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-11-16 12:23:28,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:23:28,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:23:28,038 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-11-16 12:23:28,039 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-11-16 12:23:28,367 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:23:28,370 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:23:29,773 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:23:29,800 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:23:29,801 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 12:23:29,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:23:29 BoogieIcfgContainer [2022-11-16 12:23:29,806 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:23:29,809 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:23:29,809 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:23:29,813 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:23:29,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:23:26" (1/3) ... [2022-11-16 12:23:29,818 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@259d3927 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:23:29, skipping insertion in model container [2022-11-16 12:23:29,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:23:27" (2/3) ... [2022-11-16 12:23:29,821 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@259d3927 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:23:29, skipping insertion in model container [2022-11-16 12:23:29,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:23:29" (3/3) ... [2022-11-16 12:23:29,831 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product26.cil.c [2022-11-16 12:23:29,853 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:23:29,853 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 12:23:29,961 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:23:29,971 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;@2aa761ae, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:23:29,971 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 12:23:29,979 INFO L276 IsEmpty]: Start isEmpty. Operand has 557 states, 438 states have (on average 1.7031963470319635) internal successors, (746), 461 states have internal predecessors, (746), 94 states have call successors, (94), 23 states have call predecessors, (94), 23 states have return successors, (94), 87 states have call predecessors, (94), 94 states have call successors, (94) [2022-11-16 12:23:29,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-16 12:23:30,000 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:23:30,001 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:23:30,001 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:23:30,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:30,009 INFO L85 PathProgramCache]: Analyzing trace with hash -452819156, now seen corresponding path program 1 times [2022-11-16 12:23:30,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:23:30,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059968096] [2022-11-16 12:23:30,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:30,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:23:30,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:30,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 12:23:30,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:30,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:23:31,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:31,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 12:23:31,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:31,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-16 12:23:31,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:31,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:23:31,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:31,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 12:23:31,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:31,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-16 12:23:31,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:31,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:23:31,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:31,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:23:31,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:31,504 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-16 12:23:31,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:23:31,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059968096] [2022-11-16 12:23:31,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059968096] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:23:31,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221553463] [2022-11-16 12:23:31,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:31,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:23:31,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:23:31,514 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:23:31,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 12:23:31,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:31,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 1718 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-16 12:23:31,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:23:32,050 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-16 12:23:32,053 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:23:32,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [221553463] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:23:32,055 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:23:32,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 6 [2022-11-16 12:23:32,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885364220] [2022-11-16 12:23:32,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:23:32,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 12:23:32,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:23:32,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 12:23:32,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:23:32,121 INFO L87 Difference]: Start difference. First operand has 557 states, 438 states have (on average 1.7031963470319635) internal successors, (746), 461 states have internal predecessors, (746), 94 states have call successors, (94), 23 states have call predecessors, (94), 23 states have return successors, (94), 87 states have call predecessors, (94), 94 states have call successors, (94) Second operand has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2022-11-16 12:23:32,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:23:32,252 INFO L93 Difference]: Finished difference Result 578 states and 964 transitions. [2022-11-16 12:23:32,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 12:23:32,255 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) Word has length 79 [2022-11-16 12:23:32,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:23:32,294 INFO L225 Difference]: With dead ends: 578 [2022-11-16 12:23:32,295 INFO L226 Difference]: Without dead ends: 549 [2022-11-16 12:23:32,300 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:23:32,304 INFO L413 NwaCegarLoop]: 925 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 925 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:23:32,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 925 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:23:32,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2022-11-16 12:23:32,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 549. [2022-11-16 12:23:32,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 432 states have (on average 1.7013888888888888) internal successors, (735), 453 states have internal predecessors, (735), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 86 states have call predecessors, (89), 89 states have call successors, (89) [2022-11-16 12:23:32,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 918 transitions. [2022-11-16 12:23:32,434 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 918 transitions. Word has length 79 [2022-11-16 12:23:32,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:23:32,439 INFO L495 AbstractCegarLoop]: Abstraction has 549 states and 918 transitions. [2022-11-16 12:23:32,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2022-11-16 12:23:32,440 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 918 transitions. [2022-11-16 12:23:32,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-16 12:23:32,456 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:23:32,456 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:23:32,472 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 12:23:32,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:23:32,666 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:23:32,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:32,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1489058496, now seen corresponding path program 1 times [2022-11-16 12:23:32,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:23:32,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493745917] [2022-11-16 12:23:32,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:32,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:23:32,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:33,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 12:23:33,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:33,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:23:33,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:33,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 12:23:33,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:33,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-16 12:23:33,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:33,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:23:33,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:33,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 12:23:33,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:33,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-16 12:23:33,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:33,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:23:33,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:33,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:23:33,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:33,420 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-16 12:23:33,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:23:33,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493745917] [2022-11-16 12:23:33,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493745917] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:23:33,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733623646] [2022-11-16 12:23:33,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:33,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:23:33,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:23:33,423 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:23:33,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 12:23:33,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:33,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 1721 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 12:23:33,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:23:33,961 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-16 12:23:33,961 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:23:33,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [733623646] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:23:33,961 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:23:33,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-11-16 12:23:33,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15200110] [2022-11-16 12:23:33,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:23:33,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:23:33,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:23:33,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:23:33,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:23:33,964 INFO L87 Difference]: Start difference. First operand 549 states and 918 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-16 12:23:34,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:23:34,150 INFO L93 Difference]: Finished difference Result 1089 states and 1828 transitions. [2022-11-16 12:23:34,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:23:34,151 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) Word has length 81 [2022-11-16 12:23:34,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:23:34,156 INFO L225 Difference]: With dead ends: 1089 [2022-11-16 12:23:34,158 INFO L226 Difference]: Without dead ends: 549 [2022-11-16 12:23:34,165 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:23:34,166 INFO L413 NwaCegarLoop]: 904 mSDtfsCounter, 14 mSDsluCounter, 1801 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2705 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:23:34,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2705 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:23:34,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2022-11-16 12:23:34,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 549. [2022-11-16 12:23:34,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 432 states have (on average 1.6990740740740742) internal successors, (734), 453 states have internal predecessors, (734), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 86 states have call predecessors, (89), 89 states have call successors, (89) [2022-11-16 12:23:34,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 917 transitions. [2022-11-16 12:23:34,198 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 917 transitions. Word has length 81 [2022-11-16 12:23:34,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:23:34,199 INFO L495 AbstractCegarLoop]: Abstraction has 549 states and 917 transitions. [2022-11-16 12:23:34,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-16 12:23:34,199 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 917 transitions. [2022-11-16 12:23:34,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-16 12:23:34,202 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:23:34,202 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:23:34,214 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 12:23:34,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:23:34,411 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:23:34,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:34,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1789740480, now seen corresponding path program 1 times [2022-11-16 12:23:34,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:23:34,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346852635] [2022-11-16 12:23:34,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:34,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:23:34,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:34,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 12:23:34,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:34,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:23:34,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:34,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 12:23:34,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:34,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-16 12:23:34,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:34,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:23:34,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:34,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 12:23:34,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:35,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-16 12:23:35,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:35,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:23:35,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:35,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:23:35,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:35,124 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-16 12:23:35,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:23:35,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346852635] [2022-11-16 12:23:35,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346852635] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:23:35,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190258948] [2022-11-16 12:23:35,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:35,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:23:35,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:23:35,130 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:23:35,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 12:23:35,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:35,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 1723 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 12:23:35,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:23:35,580 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-16 12:23:35,593 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:23:35,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190258948] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:23:35,594 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:23:35,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-11-16 12:23:35,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026220502] [2022-11-16 12:23:35,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:23:35,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:23:35,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:23:35,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:23:35,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:23:35,597 INFO L87 Difference]: Start difference. First operand 549 states and 917 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-16 12:23:35,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:23:35,761 INFO L93 Difference]: Finished difference Result 1089 states and 1826 transitions. [2022-11-16 12:23:35,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:23:35,762 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) Word has length 83 [2022-11-16 12:23:35,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:23:35,767 INFO L225 Difference]: With dead ends: 1089 [2022-11-16 12:23:35,767 INFO L226 Difference]: Without dead ends: 549 [2022-11-16 12:23:35,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:23:35,785 INFO L413 NwaCegarLoop]: 904 mSDtfsCounter, 12 mSDsluCounter, 1801 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2705 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:23:35,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2705 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:23:35,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2022-11-16 12:23:35,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 549. [2022-11-16 12:23:35,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 432 states have (on average 1.6967592592592593) internal successors, (733), 453 states have internal predecessors, (733), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 86 states have call predecessors, (89), 89 states have call successors, (89) [2022-11-16 12:23:35,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 916 transitions. [2022-11-16 12:23:35,829 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 916 transitions. Word has length 83 [2022-11-16 12:23:35,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:23:35,830 INFO L495 AbstractCegarLoop]: Abstraction has 549 states and 916 transitions. [2022-11-16 12:23:35,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-16 12:23:35,830 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 916 transitions. [2022-11-16 12:23:35,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-16 12:23:35,833 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:23:35,834 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:23:35,846 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 12:23:36,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:23:36,035 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:23:36,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:36,035 INFO L85 PathProgramCache]: Analyzing trace with hash -2051322496, now seen corresponding path program 1 times [2022-11-16 12:23:36,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:23:36,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846029009] [2022-11-16 12:23:36,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:36,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:23:36,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:36,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 12:23:36,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:36,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:23:36,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:36,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 12:23:36,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:36,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-16 12:23:36,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:36,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:23:36,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:36,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 12:23:36,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:36,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-16 12:23:36,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:36,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:23:36,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:36,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:23:36,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:36,716 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-16 12:23:36,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:23:36,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846029009] [2022-11-16 12:23:36,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846029009] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:23:36,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1512000075] [2022-11-16 12:23:36,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:36,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:23:36,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:23:36,720 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:23:36,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 12:23:37,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:37,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 1725 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 12:23:37,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:23:37,195 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-16 12:23:37,195 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:23:37,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1512000075] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:23:37,195 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:23:37,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-11-16 12:23:37,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435385786] [2022-11-16 12:23:37,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:23:37,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:23:37,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:23:37,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:23:37,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:23:37,197 INFO L87 Difference]: Start difference. First operand 549 states and 916 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-16 12:23:37,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:23:37,321 INFO L93 Difference]: Finished difference Result 1096 states and 1833 transitions. [2022-11-16 12:23:37,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:23:37,322 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) Word has length 85 [2022-11-16 12:23:37,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:23:37,327 INFO L225 Difference]: With dead ends: 1096 [2022-11-16 12:23:37,327 INFO L226 Difference]: Without dead ends: 558 [2022-11-16 12:23:37,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:23:37,332 INFO L413 NwaCegarLoop]: 904 mSDtfsCounter, 20 mSDsluCounter, 1801 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2705 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:23:37,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2705 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:23:37,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2022-11-16 12:23:37,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 558. [2022-11-16 12:23:37,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 440 states have (on average 1.6931818181818181) internal successors, (745), 461 states have internal predecessors, (745), 94 states have call successors, (94), 24 states have call predecessors, (94), 23 states have return successors, (89), 86 states have call predecessors, (89), 89 states have call successors, (89) [2022-11-16 12:23:37,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 928 transitions. [2022-11-16 12:23:37,361 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 928 transitions. Word has length 85 [2022-11-16 12:23:37,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:23:37,362 INFO L495 AbstractCegarLoop]: Abstraction has 558 states and 928 transitions. [2022-11-16 12:23:37,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-16 12:23:37,362 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 928 transitions. [2022-11-16 12:23:37,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-16 12:23:37,365 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:23:37,365 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:23:37,380 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 12:23:37,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:23:37,575 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:23:37,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:37,575 INFO L85 PathProgramCache]: Analyzing trace with hash -45070625, now seen corresponding path program 1 times [2022-11-16 12:23:37,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:23:37,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114116025] [2022-11-16 12:23:37,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:37,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:23:37,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:37,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 12:23:37,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:37,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:23:37,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:37,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-16 12:23:37,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:37,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-16 12:23:37,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:37,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:23:37,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:37,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 12:23:37,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:38,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-16 12:23:38,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:38,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:23:38,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:38,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:23:38,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:38,193 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-16 12:23:38,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:23:38,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114116025] [2022-11-16 12:23:38,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114116025] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:23:38,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756176537] [2022-11-16 12:23:38,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:38,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:23:38,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:23:38,195 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:23:38,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 12:23:38,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:38,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 1726 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 12:23:38,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:23:38,644 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-16 12:23:38,644 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:23:38,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1756176537] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:23:38,644 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:23:38,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-11-16 12:23:38,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222052566] [2022-11-16 12:23:38,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:23:38,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:23:38,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:23:38,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:23:38,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:23:38,648 INFO L87 Difference]: Start difference. First operand 558 states and 928 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-16 12:23:38,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:23:38,737 INFO L93 Difference]: Finished difference Result 1098 states and 1834 transitions. [2022-11-16 12:23:38,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:23:38,737 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) Word has length 86 [2022-11-16 12:23:38,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:23:38,744 INFO L225 Difference]: With dead ends: 1098 [2022-11-16 12:23:38,744 INFO L226 Difference]: Without dead ends: 558 [2022-11-16 12:23:38,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:23:38,751 INFO L413 NwaCegarLoop]: 904 mSDtfsCounter, 18 mSDsluCounter, 1801 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 2705 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:23:38,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 2705 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:23:38,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2022-11-16 12:23:38,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 558. [2022-11-16 12:23:38,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 440 states have (on average 1.690909090909091) internal successors, (744), 461 states have internal predecessors, (744), 94 states have call successors, (94), 24 states have call predecessors, (94), 23 states have return successors, (89), 86 states have call predecessors, (89), 89 states have call successors, (89) [2022-11-16 12:23:38,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 927 transitions. [2022-11-16 12:23:38,798 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 927 transitions. Word has length 86 [2022-11-16 12:23:38,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:23:38,799 INFO L495 AbstractCegarLoop]: Abstraction has 558 states and 927 transitions. [2022-11-16 12:23:38,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-16 12:23:38,799 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 927 transitions. [2022-11-16 12:23:38,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-16 12:23:38,803 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:23:38,803 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:23:38,816 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 12:23:39,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:23:39,011 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:23:39,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:39,012 INFO L85 PathProgramCache]: Analyzing trace with hash 84493924, now seen corresponding path program 1 times [2022-11-16 12:23:39,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:23:39,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942069525] [2022-11-16 12:23:39,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:39,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:23:39,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:39,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 12:23:39,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:39,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:23:39,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:39,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-16 12:23:39,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:39,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-16 12:23:39,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:39,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:23:39,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:39,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 12:23:39,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:39,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-16 12:23:39,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:39,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:23:39,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:39,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:23:39,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:39,570 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-16 12:23:39,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:23:39,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942069525] [2022-11-16 12:23:39,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942069525] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:23:39,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248327714] [2022-11-16 12:23:39,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:39,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:23:39,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:23:39,572 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:23:39,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 12:23:39,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:39,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 1727 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 12:23:39,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:23:40,002 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-16 12:23:40,003 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:23:40,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1248327714] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:23:40,003 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:23:40,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-11-16 12:23:40,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004293754] [2022-11-16 12:23:40,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:23:40,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:23:40,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:23:40,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:23:40,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:23:40,006 INFO L87 Difference]: Start difference. First operand 558 states and 927 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-16 12:23:40,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:23:40,092 INFO L93 Difference]: Finished difference Result 1098 states and 1833 transitions. [2022-11-16 12:23:40,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:23:40,093 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) Word has length 87 [2022-11-16 12:23:40,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:23:40,100 INFO L225 Difference]: With dead ends: 1098 [2022-11-16 12:23:40,100 INFO L226 Difference]: Without dead ends: 558 [2022-11-16 12:23:40,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:23:40,106 INFO L413 NwaCegarLoop]: 904 mSDtfsCounter, 17 mSDsluCounter, 1801 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 2705 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:23:40,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 2705 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:23:40,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2022-11-16 12:23:40,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 558. [2022-11-16 12:23:40,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 440 states have (on average 1.6886363636363637) internal successors, (743), 461 states have internal predecessors, (743), 94 states have call successors, (94), 24 states have call predecessors, (94), 23 states have return successors, (89), 86 states have call predecessors, (89), 89 states have call successors, (89) [2022-11-16 12:23:40,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 926 transitions. [2022-11-16 12:23:40,145 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 926 transitions. Word has length 87 [2022-11-16 12:23:40,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:23:40,145 INFO L495 AbstractCegarLoop]: Abstraction has 558 states and 926 transitions. [2022-11-16 12:23:40,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-16 12:23:40,146 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 926 transitions. [2022-11-16 12:23:40,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-16 12:23:40,149 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:23:40,149 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:23:40,165 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 12:23:40,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-16 12:23:40,365 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:23:40,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:40,366 INFO L85 PathProgramCache]: Analyzing trace with hash -2128673661, now seen corresponding path program 1 times [2022-11-16 12:23:40,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:23:40,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384236307] [2022-11-16 12:23:40,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:40,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:23:40,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:40,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 12:23:40,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:40,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:23:40,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:40,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:23:40,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:40,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-16 12:23:40,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:40,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:23:40,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:40,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 12:23:40,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:41,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-16 12:23:41,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:41,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:23:41,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:41,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:23:41,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:41,035 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-16 12:23:41,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:23:41,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384236307] [2022-11-16 12:23:41,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384236307] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:23:41,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1093158634] [2022-11-16 12:23:41,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:41,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:23:41,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:23:41,038 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:23:41,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 12:23:41,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:41,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 1728 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 12:23:41,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:23:41,505 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:41,505 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:23:41,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1093158634] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:23:41,506 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:23:41,506 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2022-11-16 12:23:41,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031661931] [2022-11-16 12:23:41,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:23:41,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:23:41,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:23:41,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:23:41,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2022-11-16 12:23:41,508 INFO L87 Difference]: Start difference. First operand 558 states and 926 transitions. Second operand has 7 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-16 12:23:41,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:23:41,638 INFO L93 Difference]: Finished difference Result 1117 states and 1863 transitions. [2022-11-16 12:23:41,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:23:41,638 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 88 [2022-11-16 12:23:41,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:23:41,643 INFO L225 Difference]: With dead ends: 1117 [2022-11-16 12:23:41,643 INFO L226 Difference]: Without dead ends: 581 [2022-11-16 12:23:41,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-11-16 12:23:41,647 INFO L413 NwaCegarLoop]: 905 mSDtfsCounter, 148 mSDsluCounter, 4412 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 5317 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:23:41,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 5317 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:23:41,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2022-11-16 12:23:41,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 577. [2022-11-16 12:23:41,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 456 states have (on average 1.6864035087719298) internal successors, (769), 479 states have internal predecessors, (769), 95 states have call successors, (95), 24 states have call predecessors, (95), 25 states have return successors, (93), 87 states have call predecessors, (93), 90 states have call successors, (93) [2022-11-16 12:23:41,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 957 transitions. [2022-11-16 12:23:41,669 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 957 transitions. Word has length 88 [2022-11-16 12:23:41,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:23:41,670 INFO L495 AbstractCegarLoop]: Abstraction has 577 states and 957 transitions. [2022-11-16 12:23:41,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-16 12:23:41,670 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 957 transitions. [2022-11-16 12:23:41,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-16 12:23:41,672 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:23:41,672 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:23:41,686 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-16 12:23:41,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-16 12:23:41,880 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:23:41,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:41,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1682618308, now seen corresponding path program 1 times [2022-11-16 12:23:41,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:23:41,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968368532] [2022-11-16 12:23:41,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:41,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:23:41,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:42,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 12:23:42,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:42,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:23:42,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:42,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:23:42,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:42,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-16 12:23:42,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:42,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:23:42,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:42,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 12:23:42,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:42,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-16 12:23:42,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:42,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:23:42,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:42,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:23:42,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:42,421 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-16 12:23:42,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:23:42,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968368532] [2022-11-16 12:23:42,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968368532] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:23:42,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [926753414] [2022-11-16 12:23:42,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:42,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:23:42,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:23:42,426 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:23:42,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 12:23:42,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:42,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 1727 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 12:23:42,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:23:42,836 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:42,836 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:23:42,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [926753414] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:23:42,837 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:23:42,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-11-16 12:23:42,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417156082] [2022-11-16 12:23:42,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:23:42,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:23:42,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:23:42,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:23:42,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:23:42,839 INFO L87 Difference]: Start difference. First operand 577 states and 957 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-16 12:23:42,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:23:42,988 INFO L93 Difference]: Finished difference Result 1158 states and 1937 transitions. [2022-11-16 12:23:42,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:23:42,988 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 88 [2022-11-16 12:23:42,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:23:42,993 INFO L225 Difference]: With dead ends: 1158 [2022-11-16 12:23:42,993 INFO L226 Difference]: Without dead ends: 577 [2022-11-16 12:23:42,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:23:42,997 INFO L413 NwaCegarLoop]: 854 mSDtfsCounter, 135 mSDsluCounter, 1668 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 2522 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:23:42,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 2522 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:23:42,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2022-11-16 12:23:43,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 577. [2022-11-16 12:23:43,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 456 states have (on average 1.6754385964912282) internal successors, (764), 479 states have internal predecessors, (764), 95 states have call successors, (95), 24 states have call predecessors, (95), 25 states have return successors, (93), 87 states have call predecessors, (93), 90 states have call successors, (93) [2022-11-16 12:23:43,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 952 transitions. [2022-11-16 12:23:43,019 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 952 transitions. Word has length 88 [2022-11-16 12:23:43,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:23:43,019 INFO L495 AbstractCegarLoop]: Abstraction has 577 states and 952 transitions. [2022-11-16 12:23:43,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-16 12:23:43,020 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 952 transitions. [2022-11-16 12:23:43,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-16 12:23:43,022 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:23:43,022 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:23:43,030 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-16 12:23:43,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:23:43,229 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:23:43,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:43,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1307445388, now seen corresponding path program 1 times [2022-11-16 12:23:43,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:23:43,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206527576] [2022-11-16 12:23:43,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:43,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:23:43,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:43,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 12:23:43,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:43,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:23:43,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:43,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:23:43,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:43,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-16 12:23:43,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:43,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:23:43,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:43,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 12:23:43,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:43,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-16 12:23:43,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:43,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:23:43,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:43,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:23:43,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:43,762 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-16 12:23:43,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:23:43,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206527576] [2022-11-16 12:23:43,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206527576] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:23:43,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190363896] [2022-11-16 12:23:43,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:43,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:23:43,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:23:43,764 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:23:43,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-16 12:23:44,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:44,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 1729 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 12:23:44,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:23:44,194 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:44,195 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:23:44,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190363896] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:23:44,195 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:23:44,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-11-16 12:23:44,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948721859] [2022-11-16 12:23:44,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:23:44,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:23:44,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:23:44,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:23:44,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:23:44,197 INFO L87 Difference]: Start difference. First operand 577 states and 952 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-16 12:23:44,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:23:44,373 INFO L93 Difference]: Finished difference Result 1158 states and 1927 transitions. [2022-11-16 12:23:44,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:23:44,374 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 90 [2022-11-16 12:23:44,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:23:44,385 INFO L225 Difference]: With dead ends: 1158 [2022-11-16 12:23:44,385 INFO L226 Difference]: Without dead ends: 577 [2022-11-16 12:23:44,388 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:23:44,391 INFO L413 NwaCegarLoop]: 854 mSDtfsCounter, 129 mSDsluCounter, 1668 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 2522 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:23:44,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 2522 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:23:44,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2022-11-16 12:23:44,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 577. [2022-11-16 12:23:44,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 456 states have (on average 1.6644736842105263) internal successors, (759), 479 states have internal predecessors, (759), 95 states have call successors, (95), 24 states have call predecessors, (95), 25 states have return successors, (93), 87 states have call predecessors, (93), 90 states have call successors, (93) [2022-11-16 12:23:44,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 947 transitions. [2022-11-16 12:23:44,413 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 947 transitions. Word has length 90 [2022-11-16 12:23:44,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:23:44,413 INFO L495 AbstractCegarLoop]: Abstraction has 577 states and 947 transitions. [2022-11-16 12:23:44,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-16 12:23:44,414 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 947 transitions. [2022-11-16 12:23:44,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-16 12:23:44,415 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:23:44,416 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:23:44,428 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-16 12:23:44,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:23:44,623 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:23:44,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:44,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1155388188, now seen corresponding path program 1 times [2022-11-16 12:23:44,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:23:44,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431613821] [2022-11-16 12:23:44,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:44,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:23:44,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:44,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 12:23:44,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:44,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:23:44,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:44,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:23:44,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:44,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 12:23:44,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:44,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:23:44,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:44,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 12:23:44,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:45,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-16 12:23:45,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:45,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:23:45,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:45,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:23:45,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:45,139 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-16 12:23:45,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:23:45,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431613821] [2022-11-16 12:23:45,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431613821] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:23:45,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255359641] [2022-11-16 12:23:45,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:45,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:23:45,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:23:45,141 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:23:45,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-16 12:23:45,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:45,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 1731 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 12:23:45,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:23:45,577 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:45,578 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:23:45,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [255359641] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:23:45,578 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:23:45,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-11-16 12:23:45,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128406798] [2022-11-16 12:23:45,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:23:45,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:23:45,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:23:45,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:23:45,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:23:45,581 INFO L87 Difference]: Start difference. First operand 577 states and 947 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-16 12:23:45,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:23:45,770 INFO L93 Difference]: Finished difference Result 1194 states and 1975 transitions. [2022-11-16 12:23:45,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:23:45,771 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 92 [2022-11-16 12:23:45,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:23:45,776 INFO L225 Difference]: With dead ends: 1194 [2022-11-16 12:23:45,776 INFO L226 Difference]: Without dead ends: 643 [2022-11-16 12:23:45,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:23:45,781 INFO L413 NwaCegarLoop]: 864 mSDtfsCounter, 179 mSDsluCounter, 1668 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 2532 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:23:45,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 2532 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:23:45,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2022-11-16 12:23:45,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 628. [2022-11-16 12:23:45,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 628 states, 506 states have (on average 1.66798418972332) internal successors, (844), 529 states have internal predecessors, (844), 95 states have call successors, (95), 25 states have call predecessors, (95), 26 states have return successors, (92), 87 states have call predecessors, (92), 90 states have call successors, (92) [2022-11-16 12:23:45,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 1031 transitions. [2022-11-16 12:23:45,819 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 1031 transitions. Word has length 92 [2022-11-16 12:23:45,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:23:45,820 INFO L495 AbstractCegarLoop]: Abstraction has 628 states and 1031 transitions. [2022-11-16 12:23:45,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-16 12:23:45,820 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 1031 transitions. [2022-11-16 12:23:45,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-16 12:23:45,822 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:23:45,822 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:23:45,830 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-16 12:23:46,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:23:46,030 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:23:46,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:46,030 INFO L85 PathProgramCache]: Analyzing trace with hash -2004653834, now seen corresponding path program 1 times [2022-11-16 12:23:46,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:23:46,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472345477] [2022-11-16 12:23:46,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:46,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:23:46,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:46,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 12:23:46,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:46,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:23:46,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:46,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:23:46,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:46,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-16 12:23:46,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:46,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:23:46,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:46,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 12:23:46,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:46,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-16 12:23:46,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:46,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:23:46,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:46,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:23:46,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:46,589 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-16 12:23:46,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:23:46,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472345477] [2022-11-16 12:23:46,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472345477] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:23:46,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265964133] [2022-11-16 12:23:46,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:46,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:23:46,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:23:46,591 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:23:46,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-16 12:23:46,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:46,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 1729 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 12:23:46,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:23:47,086 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:47,086 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:23:47,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1265964133] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:23:47,086 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:23:47,087 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2022-11-16 12:23:47,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823727776] [2022-11-16 12:23:47,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:23:47,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:23:47,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:23:47,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:23:47,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:23:47,089 INFO L87 Difference]: Start difference. First operand 628 states and 1031 transitions. Second operand has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-16 12:23:47,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:23:47,272 INFO L93 Difference]: Finished difference Result 1186 states and 1955 transitions. [2022-11-16 12:23:47,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:23:47,273 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 93 [2022-11-16 12:23:47,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:23:47,278 INFO L225 Difference]: With dead ends: 1186 [2022-11-16 12:23:47,278 INFO L226 Difference]: Without dead ends: 650 [2022-11-16 12:23:47,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-11-16 12:23:47,281 INFO L413 NwaCegarLoop]: 885 mSDtfsCounter, 177 mSDsluCounter, 5203 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 6088 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:23:47,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 6088 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:23:47,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 650 states. [2022-11-16 12:23:47,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 650 to 628. [2022-11-16 12:23:47,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 628 states, 506 states have (on average 1.66798418972332) internal successors, (844), 529 states have internal predecessors, (844), 95 states have call successors, (95), 25 states have call predecessors, (95), 26 states have return successors, (92), 87 states have call predecessors, (92), 90 states have call successors, (92) [2022-11-16 12:23:47,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 1031 transitions. [2022-11-16 12:23:47,306 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 1031 transitions. Word has length 93 [2022-11-16 12:23:47,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:23:47,306 INFO L495 AbstractCegarLoop]: Abstraction has 628 states and 1031 transitions. [2022-11-16 12:23:47,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-16 12:23:47,306 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 1031 transitions. [2022-11-16 12:23:47,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-16 12:23:47,311 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:23:47,311 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:23:47,319 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-16 12:23:47,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:23:47,518 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:23:47,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:47,519 INFO L85 PathProgramCache]: Analyzing trace with hash -138861034, now seen corresponding path program 1 times [2022-11-16 12:23:47,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:23:47,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279309202] [2022-11-16 12:23:47,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:47,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:23:47,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:47,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 12:23:47,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:47,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:23:47,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:47,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:23:47,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:47,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-16 12:23:47,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:47,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:23:47,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:47,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 12:23:47,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:48,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-16 12:23:48,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:48,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:23:48,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:48,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:23:48,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:48,057 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-16 12:23:48,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:23:48,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279309202] [2022-11-16 12:23:48,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279309202] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:23:48,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742701620] [2022-11-16 12:23:48,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:48,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:23:48,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:23:48,059 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:23:48,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-16 12:23:48,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:48,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 1732 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 12:23:48,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:23:48,461 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:48,461 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:23:48,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [742701620] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:23:48,462 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:23:48,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-11-16 12:23:48,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173186573] [2022-11-16 12:23:48,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:23:48,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:23:48,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:23:48,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:23:48,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:23:48,464 INFO L87 Difference]: Start difference. First operand 628 states and 1031 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-16 12:23:48,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:23:48,640 INFO L93 Difference]: Finished difference Result 1194 states and 1973 transitions. [2022-11-16 12:23:48,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:23:48,641 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 93 [2022-11-16 12:23:48,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:23:48,646 INFO L225 Difference]: With dead ends: 1194 [2022-11-16 12:23:48,646 INFO L226 Difference]: Without dead ends: 628 [2022-11-16 12:23:48,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:23:48,650 INFO L413 NwaCegarLoop]: 864 mSDtfsCounter, 173 mSDsluCounter, 1668 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 2532 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:23:48,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 2532 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:23:48,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2022-11-16 12:23:48,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 628. [2022-11-16 12:23:48,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 628 states, 506 states have (on average 1.658102766798419) internal successors, (839), 529 states have internal predecessors, (839), 95 states have call successors, (95), 25 states have call predecessors, (95), 26 states have return successors, (92), 87 states have call predecessors, (92), 90 states have call successors, (92) [2022-11-16 12:23:48,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 1026 transitions. [2022-11-16 12:23:48,677 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 1026 transitions. Word has length 93 [2022-11-16 12:23:48,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:23:48,678 INFO L495 AbstractCegarLoop]: Abstraction has 628 states and 1026 transitions. [2022-11-16 12:23:48,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-16 12:23:48,679 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 1026 transitions. [2022-11-16 12:23:48,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-16 12:23:48,681 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:23:48,681 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:23:48,694 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-16 12:23:48,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-16 12:23:48,890 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:23:48,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:48,890 INFO L85 PathProgramCache]: Analyzing trace with hash -895838635, now seen corresponding path program 1 times [2022-11-16 12:23:48,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:23:48,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251408431] [2022-11-16 12:23:48,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:48,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:23:48,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:49,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 12:23:49,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:49,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:23:49,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:49,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:23:49,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:49,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-16 12:23:49,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:49,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:23:49,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:49,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 12:23:49,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:49,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-16 12:23:49,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:49,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:23:49,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:49,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:23:49,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:49,624 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-16 12:23:49,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:23:49,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251408431] [2022-11-16 12:23:49,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251408431] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:23:49,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [891968489] [2022-11-16 12:23:49,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:49,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:23:49,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:23:49,628 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:23:49,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-16 12:23:50,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:50,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 1728 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 12:23:50,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:23:50,243 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 12:23:50,244 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:23:50,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [891968489] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:23:50,244 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:23:50,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2022-11-16 12:23:50,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444044798] [2022-11-16 12:23:50,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:23:50,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:23:50,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:23:50,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:23:50,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:23:50,248 INFO L87 Difference]: Start difference. First operand 628 states and 1026 transitions. Second operand has 7 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-16 12:23:50,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:23:50,426 INFO L93 Difference]: Finished difference Result 1121 states and 1847 transitions. [2022-11-16 12:23:50,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:23:50,427 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 93 [2022-11-16 12:23:50,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:23:50,434 INFO L225 Difference]: With dead ends: 1121 [2022-11-16 12:23:50,434 INFO L226 Difference]: Without dead ends: 652 [2022-11-16 12:23:50,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:23:50,439 INFO L413 NwaCegarLoop]: 897 mSDtfsCounter, 134 mSDsluCounter, 4379 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 5276 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:23:50,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 5276 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:23:50,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2022-11-16 12:23:50,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 647. [2022-11-16 12:23:50,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 647 states, 522 states have (on average 1.657088122605364) internal successors, (865), 547 states have internal predecessors, (865), 96 states have call successors, (96), 25 states have call predecessors, (96), 28 states have return successors, (95), 88 states have call predecessors, (95), 91 states have call successors, (95) [2022-11-16 12:23:50,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 1056 transitions. [2022-11-16 12:23:50,474 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 1056 transitions. Word has length 93 [2022-11-16 12:23:50,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:23:50,474 INFO L495 AbstractCegarLoop]: Abstraction has 647 states and 1056 transitions. [2022-11-16 12:23:50,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-16 12:23:50,475 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 1056 transitions. [2022-11-16 12:23:50,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-16 12:23:50,478 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:23:50,478 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:23:50,489 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-16 12:23:50,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-16 12:23:50,689 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:23:50,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:50,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1877365016, now seen corresponding path program 1 times [2022-11-16 12:23:50,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:23:50,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828524190] [2022-11-16 12:23:50,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:50,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:23:50,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:50,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 12:23:50,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:51,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:23:51,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:51,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:23:51,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:51,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-16 12:23:51,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:51,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:23:51,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:51,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 12:23:51,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:51,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-16 12:23:51,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:51,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:23:51,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:51,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:23:51,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:51,397 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-16 12:23:51,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:23:51,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828524190] [2022-11-16 12:23:51,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828524190] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:23:51,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691005234] [2022-11-16 12:23:51,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:51,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:23:51,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:23:51,400 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:23:51,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-16 12:23:51,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:51,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 1729 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 12:23:51,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:23:51,920 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 12:23:51,920 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:23:51,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1691005234] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:23:51,921 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:23:51,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2022-11-16 12:23:51,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953065094] [2022-11-16 12:23:51,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:23:51,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:23:51,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:23:51,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:23:51,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:23:51,923 INFO L87 Difference]: Start difference. First operand 647 states and 1056 transitions. Second operand has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-16 12:23:52,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:23:52,072 INFO L93 Difference]: Finished difference Result 1151 states and 1898 transitions. [2022-11-16 12:23:52,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:23:52,073 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 94 [2022-11-16 12:23:52,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:23:52,078 INFO L225 Difference]: With dead ends: 1151 [2022-11-16 12:23:52,079 INFO L226 Difference]: Without dead ends: 682 [2022-11-16 12:23:52,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:23:52,082 INFO L413 NwaCegarLoop]: 897 mSDtfsCounter, 143 mSDsluCounter, 4369 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 5266 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:23:52,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 5266 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:23:52,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2022-11-16 12:23:52,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 647. [2022-11-16 12:23:52,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 647 states, 522 states have (on average 1.657088122605364) internal successors, (865), 547 states have internal predecessors, (865), 96 states have call successors, (96), 25 states have call predecessors, (96), 28 states have return successors, (95), 88 states have call predecessors, (95), 91 states have call successors, (95) [2022-11-16 12:23:52,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 1056 transitions. [2022-11-16 12:23:52,109 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 1056 transitions. Word has length 94 [2022-11-16 12:23:52,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:23:52,109 INFO L495 AbstractCegarLoop]: Abstraction has 647 states and 1056 transitions. [2022-11-16 12:23:52,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-16 12:23:52,110 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 1056 transitions. [2022-11-16 12:23:52,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-16 12:23:52,112 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:23:52,112 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:23:52,124 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-16 12:23:52,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-16 12:23:52,320 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:23:52,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:52,320 INFO L85 PathProgramCache]: Analyzing trace with hash -278934120, now seen corresponding path program 1 times [2022-11-16 12:23:52,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:23:52,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413128569] [2022-11-16 12:23:52,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:52,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:23:52,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:52,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 12:23:52,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:52,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:23:52,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:52,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:23:52,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:52,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-16 12:23:52,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:52,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:23:52,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:52,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 12:23:52,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:52,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-16 12:23:52,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:52,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:23:52,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:52,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:23:52,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:52,964 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-16 12:23:52,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:23:52,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413128569] [2022-11-16 12:23:52,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413128569] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:23:52,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2015456121] [2022-11-16 12:23:52,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:52,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:23:52,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:23:52,967 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:23:52,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-16 12:23:53,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:53,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 1725 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 12:23:53,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:23:53,475 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 12:23:53,475 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:23:53,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2015456121] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:23:53,478 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:23:53,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2022-11-16 12:23:53,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538746115] [2022-11-16 12:23:53,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:23:53,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:23:53,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:23:53,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:23:53,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:23:53,481 INFO L87 Difference]: Start difference. First operand 647 states and 1056 transitions. Second operand has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-16 12:23:53,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:23:53,678 INFO L93 Difference]: Finished difference Result 1136 states and 1872 transitions. [2022-11-16 12:23:53,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:23:53,679 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 94 [2022-11-16 12:23:53,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:23:53,684 INFO L225 Difference]: With dead ends: 1136 [2022-11-16 12:23:53,684 INFO L226 Difference]: Without dead ends: 667 [2022-11-16 12:23:53,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-11-16 12:23:53,688 INFO L413 NwaCegarLoop]: 887 mSDtfsCounter, 177 mSDsluCounter, 5209 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 6096 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:23:53,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 6096 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:23:53,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2022-11-16 12:23:53,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 647. [2022-11-16 12:23:53,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 647 states, 522 states have (on average 1.657088122605364) internal successors, (865), 547 states have internal predecessors, (865), 96 states have call successors, (96), 25 states have call predecessors, (96), 28 states have return successors, (95), 88 states have call predecessors, (95), 91 states have call successors, (95) [2022-11-16 12:23:53,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 1056 transitions. [2022-11-16 12:23:53,715 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 1056 transitions. Word has length 94 [2022-11-16 12:23:53,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:23:53,715 INFO L495 AbstractCegarLoop]: Abstraction has 647 states and 1056 transitions. [2022-11-16 12:23:53,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-16 12:23:53,716 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 1056 transitions. [2022-11-16 12:23:53,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-16 12:23:53,718 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:23:53,718 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:23:53,730 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-16 12:23:53,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:23:53,927 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:23:53,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:53,927 INFO L85 PathProgramCache]: Analyzing trace with hash 1670239980, now seen corresponding path program 1 times [2022-11-16 12:23:53,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:23:53,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785261395] [2022-11-16 12:23:53,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:53,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:23:53,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:54,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 12:23:54,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:54,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:23:54,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:54,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:23:54,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:54,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-16 12:23:54,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:54,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:23:54,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:54,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-16 12:23:54,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:54,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-16 12:23:54,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:54,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:23:54,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:54,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:23:54,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:54,469 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-16 12:23:54,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:23:54,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785261395] [2022-11-16 12:23:54,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785261395] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:23:54,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1013432278] [2022-11-16 12:23:54,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:54,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:23:54,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:23:54,471 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:23:54,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-16 12:23:54,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:54,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 1729 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 12:23:54,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:23:54,956 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:23:54,956 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:23:54,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1013432278] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:23:54,957 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:23:54,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-11-16 12:23:54,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479511324] [2022-11-16 12:23:54,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:23:54,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:23:54,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:23:54,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:23:54,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:23:54,959 INFO L87 Difference]: Start difference. First operand 647 states and 1056 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-16 12:23:55,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:23:55,036 INFO L93 Difference]: Finished difference Result 1188 states and 1957 transitions. [2022-11-16 12:23:55,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:23:55,037 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 94 [2022-11-16 12:23:55,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:23:55,042 INFO L225 Difference]: With dead ends: 1188 [2022-11-16 12:23:55,042 INFO L226 Difference]: Without dead ends: 647 [2022-11-16 12:23:55,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:23:55,046 INFO L413 NwaCegarLoop]: 893 mSDtfsCounter, 23 mSDsluCounter, 1781 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 2674 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:23:55,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 2674 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:23:55,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647 states. [2022-11-16 12:23:55,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647 to 647. [2022-11-16 12:23:55,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 647 states, 522 states have (on average 1.6494252873563218) internal successors, (861), 547 states have internal predecessors, (861), 96 states have call successors, (96), 25 states have call predecessors, (96), 28 states have return successors, (95), 88 states have call predecessors, (95), 91 states have call successors, (95) [2022-11-16 12:23:55,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 1052 transitions. [2022-11-16 12:23:55,081 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 1052 transitions. Word has length 94 [2022-11-16 12:23:55,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:23:55,081 INFO L495 AbstractCegarLoop]: Abstraction has 647 states and 1052 transitions. [2022-11-16 12:23:55,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-16 12:23:55,082 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 1052 transitions. [2022-11-16 12:23:55,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-16 12:23:55,084 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:23:55,084 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:23:55,099 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-16 12:23:55,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-16 12:23:55,299 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:23:55,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:55,300 INFO L85 PathProgramCache]: Analyzing trace with hash -64886323, now seen corresponding path program 1 times [2022-11-16 12:23:55,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:23:55,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799573168] [2022-11-16 12:23:55,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:55,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:23:55,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:55,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 12:23:55,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:55,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:23:55,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:55,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:23:55,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:55,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-16 12:23:55,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:55,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:23:55,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:55,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 12:23:55,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:55,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-16 12:23:55,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:55,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:23:55,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:55,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:23:55,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:55,945 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-16 12:23:55,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:23:55,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799573168] [2022-11-16 12:23:55,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799573168] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:23:55,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [957717730] [2022-11-16 12:23:55,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:55,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:23:55,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:23:55,948 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:23:55,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-16 12:23:56,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:56,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 1726 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 12:23:56,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:23:56,527 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 12:23:56,527 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:23:56,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [957717730] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:23:56,529 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:23:56,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2022-11-16 12:23:56,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561709563] [2022-11-16 12:23:56,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:23:56,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:23:56,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:23:56,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:23:56,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:23:56,533 INFO L87 Difference]: Start difference. First operand 647 states and 1052 transitions. Second operand has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-16 12:23:56,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:23:56,770 INFO L93 Difference]: Finished difference Result 1136 states and 1869 transitions. [2022-11-16 12:23:56,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:23:56,771 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 95 [2022-11-16 12:23:56,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:23:56,777 INFO L225 Difference]: With dead ends: 1136 [2022-11-16 12:23:56,777 INFO L226 Difference]: Without dead ends: 667 [2022-11-16 12:23:56,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-11-16 12:23:56,781 INFO L413 NwaCegarLoop]: 881 mSDtfsCounter, 185 mSDsluCounter, 5172 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 6053 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:23:56,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 6053 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:23:56,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2022-11-16 12:23:56,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 647. [2022-11-16 12:23:56,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 647 states, 522 states have (on average 1.6494252873563218) internal successors, (861), 547 states have internal predecessors, (861), 96 states have call successors, (96), 25 states have call predecessors, (96), 28 states have return successors, (95), 88 states have call predecessors, (95), 91 states have call successors, (95) [2022-11-16 12:23:56,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 1052 transitions. [2022-11-16 12:23:56,811 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 1052 transitions. Word has length 95 [2022-11-16 12:23:56,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:23:56,812 INFO L495 AbstractCegarLoop]: Abstraction has 647 states and 1052 transitions. [2022-11-16 12:23:56,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-16 12:23:56,812 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 1052 transitions. [2022-11-16 12:23:56,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-11-16 12:23:56,815 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:23:56,815 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:23:56,830 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-16 12:23:57,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-16 12:23:57,024 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:23:57,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:57,025 INFO L85 PathProgramCache]: Analyzing trace with hash -370510403, now seen corresponding path program 1 times [2022-11-16 12:23:57,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:23:57,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240353200] [2022-11-16 12:23:57,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:57,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:23:57,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:57,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 12:23:57,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:57,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:23:57,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:57,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:23:57,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:57,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-16 12:23:57,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:57,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:23:57,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:57,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 12:23:57,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:57,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-16 12:23:57,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:57,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:23:57,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:57,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:23:57,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:57,591 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-16 12:23:57,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:23:57,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240353200] [2022-11-16 12:23:57,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240353200] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:23:57,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1737037313] [2022-11-16 12:23:57,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:57,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:23:57,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:23:57,594 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:23:57,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-16 12:23:57,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:57,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 1727 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:23:57,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:23:58,038 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-16 12:23:58,039 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:23:58,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1737037313] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:23:58,039 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:23:58,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-11-16 12:23:58,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462454149] [2022-11-16 12:23:58,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:23:58,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:23:58,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:23:58,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:23:58,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:23:58,042 INFO L87 Difference]: Start difference. First operand 647 states and 1052 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-16 12:23:58,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:23:58,128 INFO L93 Difference]: Finished difference Result 1244 states and 2039 transitions. [2022-11-16 12:23:58,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:23:58,129 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 96 [2022-11-16 12:23:58,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:23:58,134 INFO L225 Difference]: With dead ends: 1244 [2022-11-16 12:23:58,134 INFO L226 Difference]: Without dead ends: 683 [2022-11-16 12:23:58,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:23:58,138 INFO L413 NwaCegarLoop]: 885 mSDtfsCounter, 38 mSDsluCounter, 1765 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 2650 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:23:58,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 2650 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:23:58,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2022-11-16 12:23:58,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 671. [2022-11-16 12:23:58,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 671 states, 546 states have (on average 1.6282051282051282) internal successors, (889), 571 states have internal predecessors, (889), 96 states have call successors, (96), 25 states have call predecessors, (96), 28 states have return successors, (95), 88 states have call predecessors, (95), 91 states have call successors, (95) [2022-11-16 12:23:58,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 1080 transitions. [2022-11-16 12:23:58,212 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 1080 transitions. Word has length 96 [2022-11-16 12:23:58,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:23:58,213 INFO L495 AbstractCegarLoop]: Abstraction has 671 states and 1080 transitions. [2022-11-16 12:23:58,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-16 12:23:58,213 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 1080 transitions. [2022-11-16 12:23:58,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-11-16 12:23:58,216 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:23:58,216 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:23:58,230 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-16 12:23:58,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-16 12:23:58,425 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:23:58,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:58,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1622446553, now seen corresponding path program 1 times [2022-11-16 12:23:58,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:23:58,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029309588] [2022-11-16 12:23:58,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:58,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:23:58,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:58,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 12:23:58,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:58,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:23:58,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:58,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:23:58,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:58,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-16 12:23:58,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:58,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:23:58,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:58,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:23:58,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:58,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-16 12:23:58,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:58,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:23:59,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:59,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:23:59,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:59,009 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-16 12:23:59,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:23:59,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029309588] [2022-11-16 12:23:59,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029309588] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:23:59,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2009180601] [2022-11-16 12:23:59,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:59,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:23:59,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:23:59,011 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:23:59,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-16 12:23:59,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:59,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 1730 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 12:23:59,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:23:59,872 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-16 12:23:59,872 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:23:59,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2009180601] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:23:59,873 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:23:59,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2022-11-16 12:23:59,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256112107] [2022-11-16 12:23:59,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:23:59,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:23:59,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:23:59,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:23:59,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:23:59,876 INFO L87 Difference]: Start difference. First operand 671 states and 1080 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-16 12:24:02,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:24:02,546 INFO L93 Difference]: Finished difference Result 1733 states and 2875 transitions. [2022-11-16 12:24:02,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:24:02,547 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) Word has length 96 [2022-11-16 12:24:02,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:24:02,556 INFO L225 Difference]: With dead ends: 1733 [2022-11-16 12:24:02,556 INFO L226 Difference]: Without dead ends: 1269 [2022-11-16 12:24:02,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:24:02,560 INFO L413 NwaCegarLoop]: 424 mSDtfsCounter, 2195 mSDsluCounter, 726 mSDsCounter, 0 mSdLazyCounter, 2111 mSolverCounterSat, 407 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2302 SdHoareTripleChecker+Valid, 1150 SdHoareTripleChecker+Invalid, 2518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 407 IncrementalHoareTripleChecker+Valid, 2111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:24:02,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2302 Valid, 1150 Invalid, 2518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [407 Valid, 2111 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-16 12:24:02,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1269 states. [2022-11-16 12:24:02,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1269 to 1153. [2022-11-16 12:24:02,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1153 states, 929 states have (on average 1.6566200215285254) internal successors, (1539), 963 states have internal predecessors, (1539), 179 states have call successors, (179), 39 states have call predecessors, (179), 44 states have return successors, (185), 163 states have call predecessors, (185), 174 states have call successors, (185) [2022-11-16 12:24:02,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1153 states to 1153 states and 1903 transitions. [2022-11-16 12:24:02,623 INFO L78 Accepts]: Start accepts. Automaton has 1153 states and 1903 transitions. Word has length 96 [2022-11-16 12:24:02,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:24:02,623 INFO L495 AbstractCegarLoop]: Abstraction has 1153 states and 1903 transitions. [2022-11-16 12:24:02,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-16 12:24:02,624 INFO L276 IsEmpty]: Start isEmpty. Operand 1153 states and 1903 transitions. [2022-11-16 12:24:02,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-16 12:24:02,628 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:24:02,628 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:24:02,644 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-16 12:24:02,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:24:02,845 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:24:02,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:24:02,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1145672278, now seen corresponding path program 1 times [2022-11-16 12:24:02,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:24:02,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904820752] [2022-11-16 12:24:02,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:24:02,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:24:02,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:03,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 12:24:03,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:03,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:24:03,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:03,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:24:03,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:03,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-16 12:24:03,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:03,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:24:03,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:03,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:24:03,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:03,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-16 12:24:03,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:03,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:24:03,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:03,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:24:03,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:03,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 12:24:03,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:03,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:24:03,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:03,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-16 12:24:03,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:03,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-16 12:24:03,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:03,586 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-16 12:24:03,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:24:03,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904820752] [2022-11-16 12:24:03,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904820752] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:24:03,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [565097147] [2022-11-16 12:24:03,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:24:03,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:24:03,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:24:03,590 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:24:03,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-16 12:24:03,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:03,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 2022 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 12:24:03,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:24:04,185 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-16 12:24:04,185 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:24:04,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [565097147] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:24:04,186 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:24:04,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2022-11-16 12:24:04,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589740244] [2022-11-16 12:24:04,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:24:04,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:24:04,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:24:04,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:24:04,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-11-16 12:24:04,188 INFO L87 Difference]: Start difference. First operand 1153 states and 1903 transitions. Second operand has 8 states, 8 states have (on average 10.25) internal successors, (82), 7 states have internal predecessors, (82), 5 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-16 12:24:07,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:24:07,649 INFO L93 Difference]: Finished difference Result 2974 states and 4977 transitions. [2022-11-16 12:24:07,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-16 12:24:07,650 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 7 states have internal predecessors, (82), 5 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) Word has length 124 [2022-11-16 12:24:07,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:24:07,666 INFO L225 Difference]: With dead ends: 2974 [2022-11-16 12:24:07,666 INFO L226 Difference]: Without dead ends: 2026 [2022-11-16 12:24:07,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=96, Invalid=504, Unknown=0, NotChecked=0, Total=600 [2022-11-16 12:24:07,672 INFO L413 NwaCegarLoop]: 478 mSDtfsCounter, 1708 mSDsluCounter, 1768 mSDsCounter, 0 mSdLazyCounter, 4954 mSolverCounterSat, 303 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1783 SdHoareTripleChecker+Valid, 2246 SdHoareTripleChecker+Invalid, 5257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 303 IncrementalHoareTripleChecker+Valid, 4954 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:24:07,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1783 Valid, 2246 Invalid, 5257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [303 Valid, 4954 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-11-16 12:24:07,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2026 states. [2022-11-16 12:24:07,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2026 to 1856. [2022-11-16 12:24:07,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1856 states, 1480 states have (on average 1.6472972972972972) internal successors, (2438), 1524 states have internal predecessors, (2438), 301 states have call successors, (301), 58 states have call predecessors, (301), 74 states have return successors, (337), 284 states have call predecessors, (337), 296 states have call successors, (337) [2022-11-16 12:24:07,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1856 states to 1856 states and 3076 transitions. [2022-11-16 12:24:07,782 INFO L78 Accepts]: Start accepts. Automaton has 1856 states and 3076 transitions. Word has length 124 [2022-11-16 12:24:07,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:24:07,783 INFO L495 AbstractCegarLoop]: Abstraction has 1856 states and 3076 transitions. [2022-11-16 12:24:07,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 7 states have internal predecessors, (82), 5 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-16 12:24:07,783 INFO L276 IsEmpty]: Start isEmpty. Operand 1856 states and 3076 transitions. [2022-11-16 12:24:07,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-11-16 12:24:07,789 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:24:07,789 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:24:07,798 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-16 12:24:07,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:24:07,997 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:24:07,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:24:07,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1108611874, now seen corresponding path program 1 times [2022-11-16 12:24:07,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:24:07,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327644637] [2022-11-16 12:24:07,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:24:07,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:24:08,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:08,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 12:24:08,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:08,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:24:08,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:08,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:24:08,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:08,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-16 12:24:08,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:08,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:24:08,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:08,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:24:08,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:08,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-16 12:24:08,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:08,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:24:08,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:08,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:24:08,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:08,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 12:24:08,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:08,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:24:08,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:08,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-16 12:24:08,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:08,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-16 12:24:08,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:08,759 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-16 12:24:08,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:24:08,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327644637] [2022-11-16 12:24:08,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327644637] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:24:08,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1028919442] [2022-11-16 12:24:08,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:24:08,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:24:08,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:24:08,761 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:24:08,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-16 12:24:09,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:09,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 2022 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:24:09,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:24:09,204 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-16 12:24:09,204 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:24:09,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1028919442] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:24:09,205 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:24:09,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2022-11-16 12:24:09,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589817812] [2022-11-16 12:24:09,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:24:09,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:24:09,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:24:09,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:24:09,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:24:09,207 INFO L87 Difference]: Start difference. First operand 1856 states and 3076 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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) [2022-11-16 12:24:09,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:24:09,430 INFO L93 Difference]: Finished difference Result 3715 states and 6240 transitions. [2022-11-16 12:24:09,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:24:09,431 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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 125 [2022-11-16 12:24:09,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:24:09,446 INFO L225 Difference]: With dead ends: 3715 [2022-11-16 12:24:09,446 INFO L226 Difference]: Without dead ends: 2067 [2022-11-16 12:24:09,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:24:09,454 INFO L413 NwaCegarLoop]: 948 mSDtfsCounter, 139 mSDsluCounter, 1803 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 2751 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:24:09,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 2751 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:24:09,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2067 states. [2022-11-16 12:24:09,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2067 to 1860. [2022-11-16 12:24:09,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1860 states, 1484 states have (on average 1.6455525606469004) internal successors, (2442), 1528 states have internal predecessors, (2442), 301 states have call successors, (301), 58 states have call predecessors, (301), 74 states have return successors, (337), 284 states have call predecessors, (337), 296 states have call successors, (337) [2022-11-16 12:24:09,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1860 states to 1860 states and 3080 transitions. [2022-11-16 12:24:09,569 INFO L78 Accepts]: Start accepts. Automaton has 1860 states and 3080 transitions. Word has length 125 [2022-11-16 12:24:09,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:24:09,569 INFO L495 AbstractCegarLoop]: Abstraction has 1860 states and 3080 transitions. [2022-11-16 12:24:09,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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) [2022-11-16 12:24:09,570 INFO L276 IsEmpty]: Start isEmpty. Operand 1860 states and 3080 transitions. [2022-11-16 12:24:09,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-11-16 12:24:09,575 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:24:09,575 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:24:09,584 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-11-16 12:24:09,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-11-16 12:24:09,782 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:24:09,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:24:09,783 INFO L85 PathProgramCache]: Analyzing trace with hash 320066416, now seen corresponding path program 1 times [2022-11-16 12:24:09,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:24:09,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171083171] [2022-11-16 12:24:09,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:24:09,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:24:09,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:09,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 12:24:09,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:10,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:24:10,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:10,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:24:10,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:10,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-16 12:24:10,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:10,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:24:10,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:10,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:24:10,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:10,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-16 12:24:10,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:10,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:24:10,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:10,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:24:10,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:10,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 12:24:10,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:10,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:24:10,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:10,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-16 12:24:10,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:10,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-16 12:24:10,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:10,512 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-16 12:24:10,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:24:10,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171083171] [2022-11-16 12:24:10,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171083171] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:24:10,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1075007944] [2022-11-16 12:24:10,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:24:10,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:24:10,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:24:10,514 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:24:10,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-16 12:24:10,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:10,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 2039 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-16 12:24:10,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:24:11,173 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-16 12:24:11,173 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:24:11,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1075007944] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:24:11,174 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:24:11,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [8] total 15 [2022-11-16 12:24:11,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400278443] [2022-11-16 12:24:11,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:24:11,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 12:24:11,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:24:11,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 12:24:11,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-11-16 12:24:11,176 INFO L87 Difference]: Start difference. First operand 1860 states and 3080 transitions. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 8 states have internal predecessors, (89), 5 states have call successors, (14), 4 states have call predecessors, (14), 5 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-16 12:24:17,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:24:17,000 INFO L93 Difference]: Finished difference Result 6007 states and 10256 transitions. [2022-11-16 12:24:17,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 12:24:17,001 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 8 states have internal predecessors, (89), 5 states have call successors, (14), 4 states have call predecessors, (14), 5 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) Word has length 128 [2022-11-16 12:24:17,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:24:17,039 INFO L225 Difference]: With dead ends: 6007 [2022-11-16 12:24:17,039 INFO L226 Difference]: Without dead ends: 4354 [2022-11-16 12:24:17,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462 [2022-11-16 12:24:17,051 INFO L413 NwaCegarLoop]: 993 mSDtfsCounter, 3889 mSDsluCounter, 3224 mSDsCounter, 0 mSdLazyCounter, 5836 mSolverCounterSat, 1079 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4009 SdHoareTripleChecker+Valid, 4217 SdHoareTripleChecker+Invalid, 6915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1079 IncrementalHoareTripleChecker+Valid, 5836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:24:17,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4009 Valid, 4217 Invalid, 6915 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1079 Valid, 5836 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-11-16 12:24:17,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4354 states. [2022-11-16 12:24:17,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4354 to 4019. [2022-11-16 12:24:17,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4019 states, 3168 states have (on average 1.6410984848484849) internal successors, (5199), 3259 states have internal predecessors, (5199), 686 states have call successors, (686), 112 states have call predecessors, (686), 164 states have return successors, (890), 674 states have call predecessors, (890), 681 states have call successors, (890) [2022-11-16 12:24:17,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4019 states to 4019 states and 6775 transitions. [2022-11-16 12:24:17,474 INFO L78 Accepts]: Start accepts. Automaton has 4019 states and 6775 transitions. Word has length 128 [2022-11-16 12:24:17,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:24:17,475 INFO L495 AbstractCegarLoop]: Abstraction has 4019 states and 6775 transitions. [2022-11-16 12:24:17,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 8 states have internal predecessors, (89), 5 states have call successors, (14), 4 states have call predecessors, (14), 5 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-16 12:24:17,476 INFO L276 IsEmpty]: Start isEmpty. Operand 4019 states and 6775 transitions. [2022-11-16 12:24:17,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-16 12:24:17,489 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:24:17,489 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:24:17,504 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-11-16 12:24:17,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-11-16 12:24:17,699 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:24:17,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:24:17,699 INFO L85 PathProgramCache]: Analyzing trace with hash -1950540149, now seen corresponding path program 1 times [2022-11-16 12:24:17,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:24:17,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281453173] [2022-11-16 12:24:17,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:24:17,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:24:17,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:17,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 12:24:17,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:17,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:24:17,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:17,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:24:17,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:18,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-16 12:24:18,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:18,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:24:18,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:18,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:24:18,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:18,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-16 12:24:18,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:18,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:24:18,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:18,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:24:18,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:18,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 12:24:18,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:18,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:24:18,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:18,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 12:24:18,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:18,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 12:24:18,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:18,467 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-16 12:24:18,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:24:18,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281453173] [2022-11-16 12:24:18,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281453173] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:24:18,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [449533753] [2022-11-16 12:24:18,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:24:18,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:24:18,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:24:18,470 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:24:18,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-16 12:24:18,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:18,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 2040 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:24:18,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:24:18,924 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-16 12:24:18,924 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:24:18,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [449533753] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:24:18,924 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:24:18,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2022-11-16 12:24:18,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041122225] [2022-11-16 12:24:18,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:24:18,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:24:18,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:24:18,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:24:18,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:24:18,927 INFO L87 Difference]: Start difference. First operand 4019 states and 6775 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-16 12:24:19,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:24:19,683 INFO L93 Difference]: Finished difference Result 11225 states and 19415 transitions. [2022-11-16 12:24:19,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:24:19,683 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 129 [2022-11-16 12:24:19,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:24:19,746 INFO L225 Difference]: With dead ends: 11225 [2022-11-16 12:24:19,747 INFO L226 Difference]: Without dead ends: 7528 [2022-11-16 12:24:19,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2022-11-16 12:24:19,775 INFO L413 NwaCegarLoop]: 1399 mSDtfsCounter, 752 mSDsluCounter, 3520 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 765 SdHoareTripleChecker+Valid, 4919 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:24:19,775 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [765 Valid, 4919 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 388 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 12:24:19,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7528 states. [2022-11-16 12:24:20,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7528 to 7503. [2022-11-16 12:24:20,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7503 states, 5880 states have (on average 1.631122448979592) internal successors, (9591), 6052 states have internal predecessors, (9591), 1295 states have call successors, (1295), 228 states have call predecessors, (1295), 327 states have return successors, (1910), 1276 states have call predecessors, (1910), 1290 states have call successors, (1910) [2022-11-16 12:24:20,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7503 states to 7503 states and 12796 transitions. [2022-11-16 12:24:20,339 INFO L78 Accepts]: Start accepts. Automaton has 7503 states and 12796 transitions. Word has length 129 [2022-11-16 12:24:20,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:24:20,339 INFO L495 AbstractCegarLoop]: Abstraction has 7503 states and 12796 transitions. [2022-11-16 12:24:20,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-16 12:24:20,340 INFO L276 IsEmpty]: Start isEmpty. Operand 7503 states and 12796 transitions. [2022-11-16 12:24:20,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-11-16 12:24:20,357 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:24:20,358 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:24:20,370 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-11-16 12:24:20,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:24:20,566 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:24:20,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:24:20,566 INFO L85 PathProgramCache]: Analyzing trace with hash 345288400, now seen corresponding path program 1 times [2022-11-16 12:24:20,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:24:20,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965932492] [2022-11-16 12:24:20,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:24:20,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:24:20,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:20,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 12:24:20,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:20,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:24:20,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:20,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:24:20,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:20,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 12:24:20,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:20,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:24:20,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:20,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 12:24:20,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:21,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-16 12:24:21,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:21,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:24:21,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:21,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:24:21,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:21,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 12:24:21,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:21,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:24:21,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:21,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-16 12:24:21,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:21,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-16 12:24:21,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:21,336 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-16 12:24:21,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:24:21,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965932492] [2022-11-16 12:24:21,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965932492] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:24:21,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [151453452] [2022-11-16 12:24:21,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:24:21,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:24:21,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:24:21,340 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:24:21,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-11-16 12:24:21,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:21,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 2040 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:24:21,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:24:21,754 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-16 12:24:21,754 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:24:21,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [151453452] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:24:21,755 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:24:21,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2022-11-16 12:24:21,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094799344] [2022-11-16 12:24:21,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:24:21,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:24:21,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:24:21,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:24:21,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:24:21,757 INFO L87 Difference]: Start difference. First operand 7503 states and 12796 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 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) [2022-11-16 12:24:22,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:24:22,217 INFO L93 Difference]: Finished difference Result 14862 states and 25394 transitions. [2022-11-16 12:24:22,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:24:22,217 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 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 131 [2022-11-16 12:24:22,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:24:22,276 INFO L225 Difference]: With dead ends: 14862 [2022-11-16 12:24:22,276 INFO L226 Difference]: Without dead ends: 7557 [2022-11-16 12:24:22,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:24:22,312 INFO L413 NwaCegarLoop]: 884 mSDtfsCounter, 39 mSDsluCounter, 1763 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 2647 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:24:22,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 2647 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:24:22,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7557 states. [2022-11-16 12:24:22,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7557 to 7524. [2022-11-16 12:24:22,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7524 states, 5900 states have (on average 1.6310169491525424) internal successors, (9623), 6073 states have internal predecessors, (9623), 1295 states have call successors, (1295), 228 states have call predecessors, (1295), 328 states have return successors, (1911), 1276 states have call predecessors, (1911), 1290 states have call successors, (1911) [2022-11-16 12:24:22,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7524 states to 7524 states and 12829 transitions. [2022-11-16 12:24:22,856 INFO L78 Accepts]: Start accepts. Automaton has 7524 states and 12829 transitions. Word has length 131 [2022-11-16 12:24:22,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:24:22,858 INFO L495 AbstractCegarLoop]: Abstraction has 7524 states and 12829 transitions. [2022-11-16 12:24:22,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 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) [2022-11-16 12:24:22,861 INFO L276 IsEmpty]: Start isEmpty. Operand 7524 states and 12829 transitions. [2022-11-16 12:24:22,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-16 12:24:22,881 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:24:22,881 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:24:22,894 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-11-16 12:24:23,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:24:23,090 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:24:23,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:24:23,090 INFO L85 PathProgramCache]: Analyzing trace with hash -346895294, now seen corresponding path program 1 times [2022-11-16 12:24:23,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:24:23,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429620866] [2022-11-16 12:24:23,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:24:23,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:24:23,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:23,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 12:24:23,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:23,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:24:23,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:23,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:24:23,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:23,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 12:24:23,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:23,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:24:23,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:23,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 12:24:23,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:23,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-16 12:24:23,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:23,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:24:23,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:23,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:24:23,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:23,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 12:24:23,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:23,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:24:23,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:23,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-16 12:24:23,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:23,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-16 12:24:23,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:23,878 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-16 12:24:23,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:24:23,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429620866] [2022-11-16 12:24:23,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429620866] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:24:23,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [102408059] [2022-11-16 12:24:23,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:24:23,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:24:23,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:24:23,880 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:24:23,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-11-16 12:24:24,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:24,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 2038 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-16 12:24:24,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:24:24,384 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 12:24:24,384 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:24:24,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [102408059] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:24:24,385 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:24:24,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2022-11-16 12:24:24,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770049296] [2022-11-16 12:24:24,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:24:24,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:24:24,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:24:24,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:24:24,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-11-16 12:24:24,387 INFO L87 Difference]: Start difference. First operand 7524 states and 12829 transitions. Second operand has 8 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-16 12:24:24,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:24:24,832 INFO L93 Difference]: Finished difference Result 14792 states and 25274 transitions. [2022-11-16 12:24:24,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:24:24,833 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 132 [2022-11-16 12:24:24,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:24:24,882 INFO L225 Difference]: With dead ends: 14792 [2022-11-16 12:24:24,882 INFO L226 Difference]: Without dead ends: 7597 [2022-11-16 12:24:24,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2022-11-16 12:24:24,913 INFO L413 NwaCegarLoop]: 881 mSDtfsCounter, 175 mSDsluCounter, 5182 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 6063 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:24:24,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 6063 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:24:24,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7597 states. [2022-11-16 12:24:25,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7597 to 7524. [2022-11-16 12:24:25,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7524 states, 5900 states have (on average 1.6308474576271186) internal successors, (9622), 6073 states have internal predecessors, (9622), 1295 states have call successors, (1295), 228 states have call predecessors, (1295), 328 states have return successors, (1911), 1276 states have call predecessors, (1911), 1290 states have call successors, (1911) [2022-11-16 12:24:25,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7524 states to 7524 states and 12828 transitions. [2022-11-16 12:24:25,439 INFO L78 Accepts]: Start accepts. Automaton has 7524 states and 12828 transitions. Word has length 132 [2022-11-16 12:24:25,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:24:25,440 INFO L495 AbstractCegarLoop]: Abstraction has 7524 states and 12828 transitions. [2022-11-16 12:24:25,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-16 12:24:25,440 INFO L276 IsEmpty]: Start isEmpty. Operand 7524 states and 12828 transitions. [2022-11-16 12:24:25,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-16 12:24:25,454 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:24:25,454 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:24:25,466 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-11-16 12:24:25,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-11-16 12:24:25,662 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:24:25,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:24:25,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1788411904, now seen corresponding path program 1 times [2022-11-16 12:24:25,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:24:25,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241934862] [2022-11-16 12:24:25,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:24:25,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:24:25,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:25,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 12:24:25,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:25,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:24:25,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:25,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:24:25,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:25,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 12:24:25,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:25,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:24:25,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:25,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 12:24:25,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:26,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-16 12:24:26,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:26,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:24:26,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:26,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:24:26,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:26,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 12:24:26,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:26,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:24:26,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:26,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-16 12:24:26,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:26,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-16 12:24:26,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:26,526 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-16 12:24:26,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:24:26,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241934862] [2022-11-16 12:24:26,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241934862] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:24:26,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1773191782] [2022-11-16 12:24:26,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:24:26,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:24:26,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:24:26,528 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:24:26,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-11-16 12:24:26,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:26,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 2041 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:24:26,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:24:27,201 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-16 12:24:27,203 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:24:27,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1773191782] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:24:27,204 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:24:27,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 11 [2022-11-16 12:24:27,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800154096] [2022-11-16 12:24:27,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:24:27,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:24:27,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:24:27,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:24:27,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:24:27,207 INFO L87 Difference]: Start difference. First operand 7524 states and 12828 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 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) [2022-11-16 12:24:27,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:24:27,976 INFO L93 Difference]: Finished difference Result 8065 states and 13851 transitions. [2022-11-16 12:24:27,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:24:27,976 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 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 132 [2022-11-16 12:24:27,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:24:28,023 INFO L225 Difference]: With dead ends: 8065 [2022-11-16 12:24:28,023 INFO L226 Difference]: Without dead ends: 8048 [2022-11-16 12:24:28,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:24:28,033 INFO L413 NwaCegarLoop]: 901 mSDtfsCounter, 879 mSDsluCounter, 1428 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 887 SdHoareTripleChecker+Valid, 2329 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:24:28,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [887 Valid, 2329 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 12:24:28,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8048 states. [2022-11-16 12:24:28,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8048 to 7572. [2022-11-16 12:24:28,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7572 states, 5948 states have (on average 1.6257565568258239) internal successors, (9670), 6121 states have internal predecessors, (9670), 1295 states have call successors, (1295), 228 states have call predecessors, (1295), 328 states have return successors, (1911), 1276 states have call predecessors, (1911), 1290 states have call successors, (1911) [2022-11-16 12:24:28,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7572 states to 7572 states and 12876 transitions. [2022-11-16 12:24:28,646 INFO L78 Accepts]: Start accepts. Automaton has 7572 states and 12876 transitions. Word has length 132 [2022-11-16 12:24:28,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:24:28,647 INFO L495 AbstractCegarLoop]: Abstraction has 7572 states and 12876 transitions. [2022-11-16 12:24:28,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 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) [2022-11-16 12:24:28,647 INFO L276 IsEmpty]: Start isEmpty. Operand 7572 states and 12876 transitions. [2022-11-16 12:24:28,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-11-16 12:24:28,662 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:24:28,662 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:24:28,669 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2022-11-16 12:24:28,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-16 12:24:28,869 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:24:28,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:24:28,870 INFO L85 PathProgramCache]: Analyzing trace with hash 405992699, now seen corresponding path program 1 times [2022-11-16 12:24:28,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:24:28,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91199188] [2022-11-16 12:24:28,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:24:28,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:24:28,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:29,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 12:24:29,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:29,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:24:29,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:29,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:24:29,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:29,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 12:24:29,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:29,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:24:29,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:29,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 12:24:29,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:29,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-16 12:24:29,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:29,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:24:29,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:29,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:24:29,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:29,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 12:24:29,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:29,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:24:29,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:29,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-16 12:24:29,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:29,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-16 12:24:29,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:29,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-16 12:24:29,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:29,653 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-16 12:24:29,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:24:29,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91199188] [2022-11-16 12:24:29,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91199188] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:24:29,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1513902806] [2022-11-16 12:24:29,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:24:29,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:24:29,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:24:29,656 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:24:29,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-11-16 12:24:30,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:30,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 2057 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 12:24:30,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:24:30,157 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-16 12:24:30,157 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:24:30,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1513902806] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:24:30,158 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:24:30,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2022-11-16 12:24:30,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698214833] [2022-11-16 12:24:30,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:24:30,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:24:30,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:24:30,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:24:30,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:24:30,160 INFO L87 Difference]: Start difference. First operand 7572 states and 12876 transitions. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 5 states have internal predecessors, (93), 3 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (14), 4 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-16 12:24:30,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:24:30,893 INFO L93 Difference]: Finished difference Result 8430 states and 14250 transitions. [2022-11-16 12:24:30,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:24:30,894 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 5 states have internal predecessors, (93), 3 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (14), 4 states have call predecessors, (14), 2 states have call successors, (14) Word has length 138 [2022-11-16 12:24:30,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:24:30,947 INFO L225 Difference]: With dead ends: 8430 [2022-11-16 12:24:30,947 INFO L226 Difference]: Without dead ends: 8413 [2022-11-16 12:24:30,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2022-11-16 12:24:30,958 INFO L413 NwaCegarLoop]: 914 mSDtfsCounter, 892 mSDsluCounter, 2677 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 894 SdHoareTripleChecker+Valid, 3591 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:24:30,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [894 Valid, 3591 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 12:24:30,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8413 states. [2022-11-16 12:24:31,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8413 to 8188. [2022-11-16 12:24:31,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8188 states, 6432 states have (on average 1.6128731343283582) internal successors, (10374), 6605 states have internal predecessors, (10374), 1387 states have call successors, (1387), 268 states have call predecessors, (1387), 368 states have return successors, (2135), 1368 states have call predecessors, (2135), 1382 states have call successors, (2135) [2022-11-16 12:24:31,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8188 states to 8188 states and 13896 transitions. [2022-11-16 12:24:31,622 INFO L78 Accepts]: Start accepts. Automaton has 8188 states and 13896 transitions. Word has length 138 [2022-11-16 12:24:31,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:24:31,623 INFO L495 AbstractCegarLoop]: Abstraction has 8188 states and 13896 transitions. [2022-11-16 12:24:31,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 5 states have internal predecessors, (93), 3 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (14), 4 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-16 12:24:31,623 INFO L276 IsEmpty]: Start isEmpty. Operand 8188 states and 13896 transitions. [2022-11-16 12:24:31,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-11-16 12:24:31,640 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:24:31,640 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:24:31,648 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-11-16 12:24:31,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-16 12:24:31,848 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:24:31,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:24:31,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1582215139, now seen corresponding path program 1 times [2022-11-16 12:24:31,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:24:31,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449551996] [2022-11-16 12:24:31,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:24:31,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:24:31,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:32,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 12:24:32,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:32,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:24:32,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:32,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:24:32,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:32,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 12:24:32,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:32,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:24:32,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:32,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 12:24:32,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:32,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-16 12:24:32,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:32,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:24:32,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:32,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:24:32,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:32,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 12:24:32,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:32,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:24:32,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:32,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-16 12:24:32,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:32,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-16 12:24:32,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:32,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-16 12:24:32,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:32,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-16 12:24:32,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:32,691 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-16 12:24:32,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:24:32,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449551996] [2022-11-16 12:24:32,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449551996] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:24:32,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366153652] [2022-11-16 12:24:32,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:24:32,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:24:32,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:24:32,693 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:24:32,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-11-16 12:24:33,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:33,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 2094 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-16 12:24:33,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:24:33,228 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 12:24:33,229 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:24:33,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1366153652] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:24:33,229 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:24:33,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2022-11-16 12:24:33,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486706965] [2022-11-16 12:24:33,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:24:33,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:24:33,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:24:33,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:24:33,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-16 12:24:33,231 INFO L87 Difference]: Start difference. First operand 8188 states and 13896 transitions. Second operand has 7 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-16 12:24:33,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:24:33,979 INFO L93 Difference]: Finished difference Result 16234 states and 27588 transitions. [2022-11-16 12:24:33,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:24:33,980 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) Word has length 149 [2022-11-16 12:24:33,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:24:34,046 INFO L225 Difference]: With dead ends: 16234 [2022-11-16 12:24:34,047 INFO L226 Difference]: Without dead ends: 8271 [2022-11-16 12:24:34,097 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-11-16 12:24:34,098 INFO L413 NwaCegarLoop]: 892 mSDtfsCounter, 167 mSDsluCounter, 4332 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 5224 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:24:34,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 5224 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:24:34,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8271 states. [2022-11-16 12:24:34,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8271 to 8188. [2022-11-16 12:24:34,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8188 states, 6432 states have (on average 1.6128731343283582) internal successors, (10374), 6605 states have internal predecessors, (10374), 1387 states have call successors, (1387), 268 states have call predecessors, (1387), 368 states have return successors, (2135), 1368 states have call predecessors, (2135), 1382 states have call successors, (2135) [2022-11-16 12:24:35,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8188 states to 8188 states and 13896 transitions. [2022-11-16 12:24:35,062 INFO L78 Accepts]: Start accepts. Automaton has 8188 states and 13896 transitions. Word has length 149 [2022-11-16 12:24:35,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:24:35,063 INFO L495 AbstractCegarLoop]: Abstraction has 8188 states and 13896 transitions. [2022-11-16 12:24:35,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-16 12:24:35,064 INFO L276 IsEmpty]: Start isEmpty. Operand 8188 states and 13896 transitions. [2022-11-16 12:24:35,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-11-16 12:24:35,095 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:24:35,095 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:24:35,116 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-11-16 12:24:35,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-11-16 12:24:35,307 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:24:35,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:24:35,308 INFO L85 PathProgramCache]: Analyzing trace with hash 584121334, now seen corresponding path program 1 times [2022-11-16 12:24:35,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:24:35,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680382908] [2022-11-16 12:24:35,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:24:35,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:24:35,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:35,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 12:24:35,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:35,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:24:35,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:35,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:24:35,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:35,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-16 12:24:35,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:35,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:24:35,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:35,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:24:35,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:35,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-16 12:24:35,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:35,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:24:35,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:36,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:24:36,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:36,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 12:24:36,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:36,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:24:36,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:36,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 12:24:36,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:36,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 12:24:36,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:36,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-16 12:24:36,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:36,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-16 12:24:36,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:36,278 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-16 12:24:36,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:24:36,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680382908] [2022-11-16 12:24:36,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680382908] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:24:36,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1261217548] [2022-11-16 12:24:36,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:24:36,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:24:36,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:24:36,283 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:24:36,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-11-16 12:24:36,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:36,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 2095 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:24:36,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:24:36,769 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-16 12:24:36,769 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:24:36,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1261217548] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:24:36,770 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:24:36,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2022-11-16 12:24:36,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665255177] [2022-11-16 12:24:36,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:24:36,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:24:36,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:24:36,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:24:36,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:24:36,772 INFO L87 Difference]: Start difference. First operand 8188 states and 13896 transitions. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-16 12:24:37,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:24:37,279 INFO L93 Difference]: Finished difference Result 16238 states and 27594 transitions. [2022-11-16 12:24:37,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:24:37,280 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) Word has length 149 [2022-11-16 12:24:37,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:24:37,317 INFO L225 Difference]: With dead ends: 16238 [2022-11-16 12:24:37,317 INFO L226 Difference]: Without dead ends: 8018 [2022-11-16 12:24:37,343 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:24:37,344 INFO L413 NwaCegarLoop]: 895 mSDtfsCounter, 11 mSDsluCounter, 1781 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2676 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:24:37,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2676 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:24:37,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8018 states. [2022-11-16 12:24:37,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8018 to 8018. [2022-11-16 12:24:38,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8018 states, 6277 states have (on average 1.614306197227975) internal successors, (10133), 6444 states have internal predecessors, (10133), 1382 states have call successors, (1382), 265 states have call predecessors, (1382), 358 states have return successors, (2121), 1362 states have call predecessors, (2121), 1377 states have call successors, (2121) [2022-11-16 12:24:38,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8018 states to 8018 states and 13636 transitions. [2022-11-16 12:24:38,077 INFO L78 Accepts]: Start accepts. Automaton has 8018 states and 13636 transitions. Word has length 149 [2022-11-16 12:24:38,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:24:38,077 INFO L495 AbstractCegarLoop]: Abstraction has 8018 states and 13636 transitions. [2022-11-16 12:24:38,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-16 12:24:38,078 INFO L276 IsEmpty]: Start isEmpty. Operand 8018 states and 13636 transitions. [2022-11-16 12:24:38,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-11-16 12:24:38,094 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:24:38,094 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:24:38,111 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-11-16 12:24:38,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-11-16 12:24:38,303 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:24:38,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:24:38,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1377800840, now seen corresponding path program 1 times [2022-11-16 12:24:38,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:24:38,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751055565] [2022-11-16 12:24:38,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:24:38,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:24:38,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:38,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 12:24:38,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:38,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:24:38,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:38,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:24:38,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:38,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-16 12:24:38,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:38,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:24:38,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:38,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 12:24:38,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:38,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-16 12:24:38,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:38,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:24:38,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:38,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:24:38,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:39,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 12:24:39,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:39,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:24:39,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:39,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-16 12:24:39,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:39,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-16 12:24:39,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:39,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-16 12:24:39,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:39,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-16 12:24:39,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:39,227 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-16 12:24:39,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:24:39,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751055565] [2022-11-16 12:24:39,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751055565] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:24:39,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796006953] [2022-11-16 12:24:39,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:24:39,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:24:39,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:24:39,229 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:24:39,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-11-16 12:24:39,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:39,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 2100 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 12:24:39,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:24:39,736 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 12:24:39,737 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:24:39,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1796006953] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:24:39,737 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:24:39,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 13 [2022-11-16 12:24:39,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852609021] [2022-11-16 12:24:39,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:24:39,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:24:39,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:24:39,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:24:39,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-11-16 12:24:39,739 INFO L87 Difference]: Start difference. First operand 8018 states and 13636 transitions. Second operand has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-16 12:24:40,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:24:40,273 INFO L93 Difference]: Finished difference Result 16005 states and 27238 transitions. [2022-11-16 12:24:40,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:24:40,274 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 151 [2022-11-16 12:24:40,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:24:40,305 INFO L225 Difference]: With dead ends: 16005 [2022-11-16 12:24:40,306 INFO L226 Difference]: Without dead ends: 8018 [2022-11-16 12:24:40,328 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-11-16 12:24:40,328 INFO L413 NwaCegarLoop]: 854 mSDtfsCounter, 176 mSDsluCounter, 1655 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 2509 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:24:40,329 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 2509 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:24:40,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8018 states. [2022-11-16 12:24:40,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8018 to 8018. [2022-11-16 12:24:40,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8018 states, 6277 states have (on average 1.614146885454835) internal successors, (10132), 6444 states have internal predecessors, (10132), 1382 states have call successors, (1382), 265 states have call predecessors, (1382), 358 states have return successors, (2121), 1362 states have call predecessors, (2121), 1377 states have call successors, (2121) [2022-11-16 12:24:40,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8018 states to 8018 states and 13635 transitions. [2022-11-16 12:24:40,902 INFO L78 Accepts]: Start accepts. Automaton has 8018 states and 13635 transitions. Word has length 151 [2022-11-16 12:24:40,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:24:40,903 INFO L495 AbstractCegarLoop]: Abstraction has 8018 states and 13635 transitions. [2022-11-16 12:24:40,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-16 12:24:40,903 INFO L276 IsEmpty]: Start isEmpty. Operand 8018 states and 13635 transitions. [2022-11-16 12:24:40,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-16 12:24:40,918 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:24:40,919 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:24:40,935 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-11-16 12:24:41,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:24:41,127 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:24:41,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:24:41,127 INFO L85 PathProgramCache]: Analyzing trace with hash 2041329410, now seen corresponding path program 1 times [2022-11-16 12:24:41,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:24:41,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167472804] [2022-11-16 12:24:41,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:24:41,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:24:41,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:41,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 12:24:41,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:41,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:24:41,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:41,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:24:41,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:41,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-16 12:24:41,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:41,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:24:41,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:41,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 12:24:41,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:41,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-16 12:24:41,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:41,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:24:41,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:41,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:24:41,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:41,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 12:24:41,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:42,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:24:42,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:42,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-16 12:24:42,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:42,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-16 12:24:42,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:42,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-16 12:24:42,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:42,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-16 12:24:42,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:42,062 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-16 12:24:42,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:24:42,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167472804] [2022-11-16 12:24:42,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167472804] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:24:42,063 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:24:42,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-16 12:24:42,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004163090] [2022-11-16 12:24:42,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:24:42,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 12:24:42,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:24:42,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 12:24:42,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:24:42,065 INFO L87 Difference]: Start difference. First operand 8018 states and 13635 transitions. Second operand has 11 states, 11 states have (on average 10.181818181818182) internal successors, (112), 6 states have internal predecessors, (112), 2 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-16 12:24:57,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:24:57,049 INFO L93 Difference]: Finished difference Result 19338 states and 34571 transitions. [2022-11-16 12:24:57,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-16 12:24:57,050 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.181818181818182) internal successors, (112), 6 states have internal predecessors, (112), 2 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) Word has length 152 [2022-11-16 12:24:57,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:24:57,123 INFO L225 Difference]: With dead ends: 19338 [2022-11-16 12:24:57,123 INFO L226 Difference]: Without dead ends: 11366 [2022-11-16 12:24:57,165 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=151, Invalid=551, Unknown=0, NotChecked=0, Total=702 [2022-11-16 12:24:57,166 INFO L413 NwaCegarLoop]: 340 mSDtfsCounter, 1607 mSDsluCounter, 2088 mSDsCounter, 0 mSdLazyCounter, 7012 mSolverCounterSat, 445 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1679 SdHoareTripleChecker+Valid, 2428 SdHoareTripleChecker+Invalid, 7457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 445 IncrementalHoareTripleChecker+Valid, 7012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:24:57,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1679 Valid, 2428 Invalid, 7457 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [445 Valid, 7012 Invalid, 0 Unknown, 0 Unchecked, 10.1s Time] [2022-11-16 12:24:57,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11366 states. [2022-11-16 12:24:59,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11366 to 8102. [2022-11-16 12:24:59,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8102 states, 6345 states have (on average 1.607565011820331) internal successors, (10200), 6504 states have internal predecessors, (10200), 1382 states have call successors, (1382), 265 states have call predecessors, (1382), 374 states have return successors, (2193), 1386 states have call predecessors, (2193), 1377 states have call successors, (2193) [2022-11-16 12:24:59,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8102 states to 8102 states and 13775 transitions. [2022-11-16 12:24:59,377 INFO L78 Accepts]: Start accepts. Automaton has 8102 states and 13775 transitions. Word has length 152 [2022-11-16 12:24:59,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:24:59,378 INFO L495 AbstractCegarLoop]: Abstraction has 8102 states and 13775 transitions. [2022-11-16 12:24:59,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.181818181818182) internal successors, (112), 6 states have internal predecessors, (112), 2 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-16 12:24:59,378 INFO L276 IsEmpty]: Start isEmpty. Operand 8102 states and 13775 transitions. [2022-11-16 12:24:59,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-16 12:24:59,395 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:24:59,395 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:24:59,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-16 12:24:59,396 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:24:59,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:24:59,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1656998355, now seen corresponding path program 1 times [2022-11-16 12:24:59,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:24:59,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351533928] [2022-11-16 12:24:59,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:24:59,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:24:59,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:59,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 12:24:59,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:59,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:24:59,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:59,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:24:59,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:59,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-16 12:24:59,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:59,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:24:59,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:59,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:24:59,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:59,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-16 12:24:59,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:59,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:24:59,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:59,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:24:59,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:00,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 12:25:00,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:00,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:25:00,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:00,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 12:25:00,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:00,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-16 12:25:00,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:00,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-16 12:25:00,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:00,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-16 12:25:00,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:00,150 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-16 12:25:00,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:25:00,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351533928] [2022-11-16 12:25:00,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351533928] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:25:00,151 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:25:00,151 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 12:25:00,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848532616] [2022-11-16 12:25:00,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:25:00,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:25:00,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:25:00,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:25:00,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:25:00,154 INFO L87 Difference]: Start difference. First operand 8102 states and 13775 transitions. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-16 12:25:12,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:25:12,048 INFO L93 Difference]: Finished difference Result 13206 states and 22735 transitions. [2022-11-16 12:25:12,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:25:12,049 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 156 [2022-11-16 12:25:12,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:25:12,074 INFO L225 Difference]: With dead ends: 13206 [2022-11-16 12:25:12,074 INFO L226 Difference]: Without dead ends: 5100 [2022-11-16 12:25:12,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2022-11-16 12:25:12,103 INFO L413 NwaCegarLoop]: 341 mSDtfsCounter, 1028 mSDsluCounter, 1242 mSDsCounter, 0 mSdLazyCounter, 4273 mSolverCounterSat, 267 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1102 SdHoareTripleChecker+Valid, 1583 SdHoareTripleChecker+Invalid, 4540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 267 IncrementalHoareTripleChecker+Valid, 4273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:25:12,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1102 Valid, 1583 Invalid, 4540 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [267 Valid, 4273 Invalid, 0 Unknown, 0 Unchecked, 9.3s Time] [2022-11-16 12:25:12,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5100 states. [2022-11-16 12:25:13,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5100 to 3611. [2022-11-16 12:25:13,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3611 states, 2852 states have (on average 1.6125525946704067) internal successors, (4599), 2923 states have internal predecessors, (4599), 589 states have call successors, (589), 136 states have call predecessors, (589), 169 states have return successors, (831), 573 states have call predecessors, (831), 584 states have call successors, (831) [2022-11-16 12:25:13,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3611 states to 3611 states and 6019 transitions. [2022-11-16 12:25:13,256 INFO L78 Accepts]: Start accepts. Automaton has 3611 states and 6019 transitions. Word has length 156 [2022-11-16 12:25:13,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:25:13,257 INFO L495 AbstractCegarLoop]: Abstraction has 3611 states and 6019 transitions. [2022-11-16 12:25:13,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-16 12:25:13,257 INFO L276 IsEmpty]: Start isEmpty. Operand 3611 states and 6019 transitions. [2022-11-16 12:25:13,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-11-16 12:25:13,263 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:25:13,263 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:25:13,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-11-16 12:25:13,264 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:25:13,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:25:13,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1944909205, now seen corresponding path program 1 times [2022-11-16 12:25:13,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:25:13,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613354652] [2022-11-16 12:25:13,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:25:13,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:25:13,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:13,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 12:25:13,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:13,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:25:13,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:13,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:25:13,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:13,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-16 12:25:13,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:13,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:25:13,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:13,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 12:25:13,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:13,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-16 12:25:13,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:13,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:25:13,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:13,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:25:13,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:14,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 12:25:14,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:14,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:25:14,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:14,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-16 12:25:14,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:14,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 12:25:14,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:14,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-16 12:25:14,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:14,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-16 12:25:14,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:14,098 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-16 12:25:14,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:25:14,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613354652] [2022-11-16 12:25:14,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613354652] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:25:14,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [646652349] [2022-11-16 12:25:14,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:25:14,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:25:14,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:25:14,102 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:25:14,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-11-16 12:25:14,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:14,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 2106 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 12:25:14,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:25:14,526 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-16 12:25:14,527 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:25:14,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [646652349] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:25:14,527 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:25:14,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 11 [2022-11-16 12:25:14,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176520260] [2022-11-16 12:25:14,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:25:14,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:25:14,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:25:14,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:25:14,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:25:14,529 INFO L87 Difference]: Start difference. First operand 3611 states and 6019 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-16 12:25:16,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:25:16,653 INFO L93 Difference]: Finished difference Result 9662 states and 16397 transitions. [2022-11-16 12:25:16,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:25:16,653 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 157 [2022-11-16 12:25:16,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:25:16,688 INFO L225 Difference]: With dead ends: 9662 [2022-11-16 12:25:16,688 INFO L226 Difference]: Without dead ends: 6161 [2022-11-16 12:25:16,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 185 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:25:16,707 INFO L413 NwaCegarLoop]: 1032 mSDtfsCounter, 818 mSDsluCounter, 702 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 818 SdHoareTripleChecker+Valid, 1734 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:25:16,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [818 Valid, 1734 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 12:25:16,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6161 states. [2022-11-16 12:25:18,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6161 to 6146. [2022-11-16 12:25:18,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6146 states, 4816 states have (on average 1.5942691029900333) internal successors, (7678), 4941 states have internal predecessors, (7678), 1036 states have call successors, (1036), 246 states have call predecessors, (1036), 293 states have return successors, (1525), 1002 states have call predecessors, (1525), 1031 states have call successors, (1525) [2022-11-16 12:25:18,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6146 states to 6146 states and 10239 transitions. [2022-11-16 12:25:18,769 INFO L78 Accepts]: Start accepts. Automaton has 6146 states and 10239 transitions. Word has length 157 [2022-11-16 12:25:18,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:25:18,770 INFO L495 AbstractCegarLoop]: Abstraction has 6146 states and 10239 transitions. [2022-11-16 12:25:18,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-16 12:25:18,770 INFO L276 IsEmpty]: Start isEmpty. Operand 6146 states and 10239 transitions. [2022-11-16 12:25:18,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-11-16 12:25:18,775 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:25:18,776 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:25:18,783 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-11-16 12:25:18,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2022-11-16 12:25:18,983 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:25:18,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:25:18,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1871061561, now seen corresponding path program 1 times [2022-11-16 12:25:18,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:25:18,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860046693] [2022-11-16 12:25:18,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:25:18,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:25:19,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:19,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 12:25:19,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:19,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:25:19,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:19,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:25:19,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:19,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-16 12:25:19,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:19,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:25:19,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:19,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 12:25:19,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:19,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-16 12:25:19,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:19,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:25:19,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:19,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:25:19,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:19,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 12:25:19,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:19,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:25:19,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:19,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-16 12:25:19,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:19,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 12:25:19,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:19,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-16 12:25:19,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:19,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-16 12:25:19,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:19,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-16 12:25:19,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:19,987 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-16 12:25:19,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:25:19,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860046693] [2022-11-16 12:25:19,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860046693] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:25:19,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [345626052] [2022-11-16 12:25:19,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:25:19,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:25:19,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:25:19,990 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:25:20,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-11-16 12:25:20,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:20,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 2128 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 12:25:20,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:25:20,408 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-16 12:25:20,408 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:25:20,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [345626052] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:25:20,409 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:25:20,409 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 10 [2022-11-16 12:25:20,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740108641] [2022-11-16 12:25:20,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:25:20,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:25:20,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:25:20,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:25:20,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:25:20,411 INFO L87 Difference]: Start difference. First operand 6146 states and 10239 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-16 12:25:23,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:25:23,710 INFO L93 Difference]: Finished difference Result 17167 states and 29131 transitions. [2022-11-16 12:25:23,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:25:23,711 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 162 [2022-11-16 12:25:23,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:25:23,761 INFO L225 Difference]: With dead ends: 17167 [2022-11-16 12:25:23,761 INFO L226 Difference]: Without dead ends: 11163 [2022-11-16 12:25:23,788 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 194 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:25:23,788 INFO L413 NwaCegarLoop]: 914 mSDtfsCounter, 879 mSDsluCounter, 669 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 879 SdHoareTripleChecker+Valid, 1583 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:25:23,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [879 Valid, 1583 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:25:23,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11163 states. [2022-11-16 12:25:27,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11163 to 11136. [2022-11-16 12:25:27,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11136 states, 8686 states have (on average 1.5945199171079898) internal successors, (13850), 8926 states have internal predecessors, (13850), 1908 states have call successors, (1908), 468 states have call predecessors, (1908), 541 states have return successors, (3013), 1829 states have call predecessors, (3013), 1903 states have call successors, (3013) [2022-11-16 12:25:27,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11136 states to 11136 states and 18771 transitions. [2022-11-16 12:25:27,182 INFO L78 Accepts]: Start accepts. Automaton has 11136 states and 18771 transitions. Word has length 162 [2022-11-16 12:25:27,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:25:27,183 INFO L495 AbstractCegarLoop]: Abstraction has 11136 states and 18771 transitions. [2022-11-16 12:25:27,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-16 12:25:27,184 INFO L276 IsEmpty]: Start isEmpty. Operand 11136 states and 18771 transitions. [2022-11-16 12:25:27,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-11-16 12:25:27,189 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:25:27,190 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:25:27,199 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2022-11-16 12:25:27,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:25:27,399 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:25:27,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:25:27,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1727846915, now seen corresponding path program 1 times [2022-11-16 12:25:27,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:25:27,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369379837] [2022-11-16 12:25:27,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:25:27,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:25:27,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:27,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 12:25:27,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:27,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:25:27,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:27,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:25:27,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:27,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-16 12:25:27,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:27,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:25:27,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:27,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 12:25:27,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:27,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-16 12:25:28,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:28,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:25:28,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:28,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:25:28,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:28,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 12:25:28,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:28,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:25:28,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:28,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-16 12:25:28,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:28,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 12:25:28,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:28,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-16 12:25:28,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:28,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-16 12:25:28,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:28,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-16 12:25:28,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:28,709 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-16 12:25:28,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:25:28,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369379837] [2022-11-16 12:25:28,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369379837] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:25:28,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1589029950] [2022-11-16 12:25:28,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:25:28,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:25:28,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:25:28,712 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:25:28,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-11-16 12:25:29,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:29,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 2132 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 12:25:29,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:25:29,214 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-16 12:25:29,215 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:25:29,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1589029950] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:25:29,215 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:25:29,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [19] total 21 [2022-11-16 12:25:29,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048916434] [2022-11-16 12:25:29,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:25:29,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:25:29,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:25:29,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:25:29,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=373, Unknown=0, NotChecked=0, Total=420 [2022-11-16 12:25:29,218 INFO L87 Difference]: Start difference. First operand 11136 states and 18771 transitions. Second operand has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-16 12:25:32,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:25:32,760 INFO L93 Difference]: Finished difference Result 20990 states and 36039 transitions. [2022-11-16 12:25:32,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:25:32,761 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 165 [2022-11-16 12:25:32,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:25:32,820 INFO L225 Difference]: With dead ends: 20990 [2022-11-16 12:25:32,820 INFO L226 Difference]: Without dead ends: 11136 [2022-11-16 12:25:32,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=52, Invalid=410, Unknown=0, NotChecked=0, Total=462 [2022-11-16 12:25:32,860 INFO L413 NwaCegarLoop]: 894 mSDtfsCounter, 332 mSDsluCounter, 1588 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 2482 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:25:32,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [342 Valid, 2482 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:25:32,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11136 states. [2022-11-16 12:25:35,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11136 to 11136. [2022-11-16 12:25:35,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11136 states, 8686 states have (on average 1.586691227262261) internal successors, (13782), 8926 states have internal predecessors, (13782), 1908 states have call successors, (1908), 468 states have call predecessors, (1908), 541 states have return successors, (3013), 1829 states have call predecessors, (3013), 1903 states have call successors, (3013) [2022-11-16 12:25:35,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11136 states to 11136 states and 18703 transitions. [2022-11-16 12:25:35,587 INFO L78 Accepts]: Start accepts. Automaton has 11136 states and 18703 transitions. Word has length 165 [2022-11-16 12:25:35,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:25:35,588 INFO L495 AbstractCegarLoop]: Abstraction has 11136 states and 18703 transitions. [2022-11-16 12:25:35,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-16 12:25:35,588 INFO L276 IsEmpty]: Start isEmpty. Operand 11136 states and 18703 transitions. [2022-11-16 12:25:35,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-16 12:25:35,592 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:25:35,592 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:25:35,599 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2022-11-16 12:25:35,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:25:35,793 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:25:35,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:25:35,794 INFO L85 PathProgramCache]: Analyzing trace with hash 1141041032, now seen corresponding path program 1 times [2022-11-16 12:25:35,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:25:35,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420951944] [2022-11-16 12:25:35,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:25:35,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:25:35,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:36,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 12:25:36,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:36,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:25:36,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:36,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:25:36,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:36,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-16 12:25:36,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:36,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:25:36,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:36,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 12:25:36,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:36,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-16 12:25:36,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:36,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:25:36,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:36,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:25:36,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:36,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 12:25:36,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:36,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:25:36,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:36,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-16 12:25:36,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:36,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-16 12:25:36,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:36,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-16 12:25:36,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:36,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 12:25:36,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:36,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-16 12:25:36,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:36,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-16 12:25:36,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:36,916 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-16 12:25:36,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:25:36,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420951944] [2022-11-16 12:25:36,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420951944] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:25:36,917 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:25:36,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-16 12:25:36,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305350108] [2022-11-16 12:25:36,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:25:36,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 12:25:36,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:25:36,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 12:25:36,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:25:36,919 INFO L87 Difference]: Start difference. First operand 11136 states and 18703 transitions. Second operand has 12 states, 11 states have (on average 10.636363636363637) internal successors, (117), 7 states have internal predecessors, (117), 4 states have call successors, (18), 6 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2022-11-16 12:26:02,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:26:02,753 INFO L93 Difference]: Finished difference Result 29511 states and 53564 transitions. [2022-11-16 12:26:02,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-16 12:26:02,753 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 10.636363636363637) internal successors, (117), 7 states have internal predecessors, (117), 4 states have call successors, (18), 6 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) Word has length 167 [2022-11-16 12:26:02,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:26:02,854 INFO L225 Difference]: With dead ends: 29511 [2022-11-16 12:26:02,854 INFO L226 Difference]: Without dead ends: 20189 [2022-11-16 12:26:02,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=277, Invalid=983, Unknown=0, NotChecked=0, Total=1260 [2022-11-16 12:26:02,901 INFO L413 NwaCegarLoop]: 336 mSDtfsCounter, 4501 mSDsluCounter, 2284 mSDsCounter, 0 mSdLazyCounter, 8822 mSolverCounterSat, 1613 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4564 SdHoareTripleChecker+Valid, 2620 SdHoareTripleChecker+Invalid, 10435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1613 IncrementalHoareTripleChecker+Valid, 8822 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:26:02,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4564 Valid, 2620 Invalid, 10435 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1613 Valid, 8822 Invalid, 0 Unknown, 0 Unchecked, 16.1s Time] [2022-11-16 12:26:02,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20189 states. [2022-11-16 12:26:06,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20189 to 15063. [2022-11-16 12:26:06,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15063 states, 11730 states have (on average 1.5717817561807332) internal successors, (18437), 12089 states have internal predecessors, (18437), 2523 states have call successors, (2523), 630 states have call predecessors, (2523), 809 states have return successors, (4489), 2453 states have call predecessors, (4489), 2518 states have call successors, (4489) [2022-11-16 12:26:06,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15063 states to 15063 states and 25449 transitions. [2022-11-16 12:26:06,615 INFO L78 Accepts]: Start accepts. Automaton has 15063 states and 25449 transitions. Word has length 167 [2022-11-16 12:26:06,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:26:06,616 INFO L495 AbstractCegarLoop]: Abstraction has 15063 states and 25449 transitions. [2022-11-16 12:26:06,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 10.636363636363637) internal successors, (117), 7 states have internal predecessors, (117), 4 states have call successors, (18), 6 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2022-11-16 12:26:06,616 INFO L276 IsEmpty]: Start isEmpty. Operand 15063 states and 25449 transitions. [2022-11-16 12:26:06,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-11-16 12:26:06,622 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:26:06,623 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:26:06,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-11-16 12:26:06,623 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:26:06,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:26:06,623 INFO L85 PathProgramCache]: Analyzing trace with hash 958042173, now seen corresponding path program 1 times [2022-11-16 12:26:06,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:26:06,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882561933] [2022-11-16 12:26:06,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:26:06,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:26:06,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:26:06,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 12:26:06,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:26:06,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:26:06,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:26:06,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:26:06,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:26:06,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-16 12:26:06,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:26:06,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:26:06,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:26:06,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 12:26:06,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:26:07,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-16 12:26:07,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:26:07,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:26:07,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:26:07,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:26:07,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:26:07,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 12:26:07,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:26:07,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:26:07,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:26:07,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-16 12:26:07,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:26:07,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 12:26:07,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:26:07,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:26:07,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:26:07,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-16 12:26:07,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:26:07,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-16 12:26:07,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:26:07,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-16 12:26:07,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:26:07,609 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-16 12:26:07,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:26:07,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882561933] [2022-11-16 12:26:07,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882561933] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:26:07,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1862188478] [2022-11-16 12:26:07,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:26:07,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:26:07,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:26:07,614 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:26:07,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-11-16 12:26:08,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:26:08,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 2148 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 12:26:08,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:26:08,082 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-16 12:26:08,082 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:26:08,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1862188478] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:26:08,083 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:26:08,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [14] total 16 [2022-11-16 12:26:08,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184124848] [2022-11-16 12:26:08,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:26:08,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:26:08,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:26:08,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:26:08,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2022-11-16 12:26:08,085 INFO L87 Difference]: Start difference. First operand 15063 states and 25449 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-16 12:26:13,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:26:13,079 INFO L93 Difference]: Finished difference Result 30248 states and 52559 transitions. [2022-11-16 12:26:13,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:26:13,080 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 169 [2022-11-16 12:26:13,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:26:13,151 INFO L225 Difference]: With dead ends: 30248 [2022-11-16 12:26:13,151 INFO L226 Difference]: Without dead ends: 15235 [2022-11-16 12:26:13,208 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2022-11-16 12:26:13,209 INFO L413 NwaCegarLoop]: 852 mSDtfsCounter, 22 mSDsluCounter, 1669 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 2521 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:26:13,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 2521 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:26:13,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15235 states. [2022-11-16 12:26:18,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15235 to 15235. [2022-11-16 12:26:18,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15235 states, 11870 states have (on average 1.5544229149115416) internal successors, (18451), 12243 states have internal predecessors, (18451), 2523 states have call successors, (2523), 648 states have call predecessors, (2523), 841 states have return successors, (4521), 2453 states have call predecessors, (4521), 2518 states have call successors, (4521) [2022-11-16 12:26:18,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15235 states to 15235 states and 25495 transitions. [2022-11-16 12:26:18,123 INFO L78 Accepts]: Start accepts. Automaton has 15235 states and 25495 transitions. Word has length 169 [2022-11-16 12:26:18,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:26:18,124 INFO L495 AbstractCegarLoop]: Abstraction has 15235 states and 25495 transitions. [2022-11-16 12:26:18,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-16 12:26:18,124 INFO L276 IsEmpty]: Start isEmpty. Operand 15235 states and 25495 transitions. [2022-11-16 12:26:18,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2022-11-16 12:26:18,131 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:26:18,131 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:26:18,138 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-11-16 12:26:18,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1954fcb1-70f0-4a0f-858d-f0ce3730fc89/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-11-16 12:26:18,332 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:26:18,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:26:18,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1870094948, now seen corresponding path program 1 times [2022-11-16 12:26:18,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:26:18,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382961479] [2022-11-16 12:26:18,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:26:18,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:26:18,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:26:18,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 12:26:18,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:26:18,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:26:18,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:26:18,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:26:18,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:26:18,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-16 12:26:18,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:26:18,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:26:18,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:26:18,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 12:26:18,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:26:19,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-16 12:26:19,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:26:19,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:26:19,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:26:19,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:26:19,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:26:19,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 12:26:19,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:26:19,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:26:19,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:26:19,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-16 12:26:19,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:26:19,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 12:26:19,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:26:19,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:26:19,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:26:19,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 12:26:19,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:26:19,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-16 12:26:19,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:26:19,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-16 12:26:19,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:26:19,607 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-16 12:26:19,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:26:19,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382961479] [2022-11-16 12:26:19,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382961479] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:26:19,608 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:26:19,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-16 12:26:19,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846460792] [2022-11-16 12:26:19,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:26:19,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 12:26:19,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:26:19,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 12:26:19,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:26:19,610 INFO L87 Difference]: Start difference. First operand 15235 states and 25495 transitions. Second operand has 11 states, 11 states have (on average 10.727272727272727) internal successors, (118), 7 states have internal predecessors, (118), 4 states have call successors, (18), 6 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2022-11-16 12:26:47,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:26:47,322 INFO L93 Difference]: Finished difference Result 34898 states and 61358 transitions. [2022-11-16 12:26:47,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-16 12:26:47,323 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.727272727272727) internal successors, (118), 7 states have internal predecessors, (118), 4 states have call successors, (18), 6 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) Word has length 170 [2022-11-16 12:26:47,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:26:47,484 INFO L225 Difference]: With dead ends: 34898 [2022-11-16 12:26:47,484 INFO L226 Difference]: Without dead ends: 21481 [2022-11-16 12:26:47,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=222, Invalid=708, Unknown=0, NotChecked=0, Total=930 [2022-11-16 12:26:47,571 INFO L413 NwaCegarLoop]: 335 mSDtfsCounter, 2975 mSDsluCounter, 2042 mSDsCounter, 0 mSdLazyCounter, 8300 mSolverCounterSat, 974 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3036 SdHoareTripleChecker+Valid, 2377 SdHoareTripleChecker+Invalid, 9274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 974 IncrementalHoareTripleChecker+Valid, 8300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:26:47,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3036 Valid, 2377 Invalid, 9274 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [974 Valid, 8300 Invalid, 0 Unknown, 0 Unchecked, 16.5s Time] [2022-11-16 12:26:47,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21481 states. [2022-11-16 12:26:55,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21481 to 16751. [2022-11-16 12:26:55,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16751 states, 13082 states have (on average 1.5348570554961014) internal successors, (20079), 13457 states have internal predecessors, (20079), 2711 states have call successors, (2711), 780 states have call predecessors, (2711), 957 states have return successors, (4821), 2623 states have call predecessors, (4821), 2706 states have call successors, (4821) [2022-11-16 12:26:55,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16751 states to 16751 states and 27611 transitions. [2022-11-16 12:26:55,147 INFO L78 Accepts]: Start accepts. Automaton has 16751 states and 27611 transitions. Word has length 170 [2022-11-16 12:26:55,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:26:55,147 INFO L495 AbstractCegarLoop]: Abstraction has 16751 states and 27611 transitions. [2022-11-16 12:26:55,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.727272727272727) internal successors, (118), 7 states have internal predecessors, (118), 4 states have call successors, (18), 6 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2022-11-16 12:26:55,148 INFO L276 IsEmpty]: Start isEmpty. Operand 16751 states and 27611 transitions. [2022-11-16 12:26:55,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-11-16 12:26:55,152 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:26:55,152 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:26:55,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-11-16 12:26:55,152 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:26:55,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:26:55,153 INFO L85 PathProgramCache]: Analyzing trace with hash -998041125, now seen corresponding path program 1 times [2022-11-16 12:26:55,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:26:55,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118738382] [2022-11-16 12:26:55,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:26:55,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:26:55,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:26:55,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 12:26:55,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:26:55,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:26:55,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:26:55,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:26:55,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:26:55,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-16 12:26:55,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:26:55,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:26:55,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:26:55,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 12:26:55,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:26:55,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-16 12:26:56,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:26:56,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:26:56,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:26:56,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:26:56,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:26:56,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 12:26:56,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:26:56,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:26:56,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:26:56,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-16 12:26:56,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:26:56,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 12:26:56,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:26:56,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-16 12:26:56,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:26:56,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-16 12:26:56,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:26:56,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-16 12:26:56,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:26:56,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 12:26:56,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:26:56,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-16 12:26:56,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:26:56,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 12:26:56,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:26:56,525 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-16 12:26:56,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:26:56,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118738382] [2022-11-16 12:26:56,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118738382] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:26:56,525 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:26:56,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-16 12:26:56,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770971954] [2022-11-16 12:26:56,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:26:56,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 12:26:56,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:26:56,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 12:26:56,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-11-16 12:26:56,527 INFO L87 Difference]: Start difference. First operand 16751 states and 27611 transitions. Second operand has 14 states, 14 states have (on average 8.5) internal successors, (119), 8 states have internal predecessors, (119), 4 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (19), 7 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-16 12:27:18,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:27:18,874 INFO L93 Difference]: Finished difference Result 39450 states and 68040 transitions. [2022-11-16 12:27:18,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-16 12:27:18,875 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.5) internal successors, (119), 8 states have internal predecessors, (119), 4 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (19), 7 states have call predecessors, (19), 3 states have call successors, (19) Word has length 177 [2022-11-16 12:27:18,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:27:19,047 INFO L225 Difference]: With dead ends: 39450 [2022-11-16 12:27:19,047 INFO L226 Difference]: Without dead ends: 22825 [2022-11-16 12:27:19,118 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=273, Invalid=917, Unknown=0, NotChecked=0, Total=1190 [2022-11-16 12:27:19,119 INFO L413 NwaCegarLoop]: 284 mSDtfsCounter, 2629 mSDsluCounter, 1495 mSDsCounter, 0 mSdLazyCounter, 8286 mSolverCounterSat, 1202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2629 SdHoareTripleChecker+Valid, 1779 SdHoareTripleChecker+Invalid, 9488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1202 IncrementalHoareTripleChecker+Valid, 8286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.8s IncrementalHoareTripleChecker+Time [2022-11-16 12:27:19,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2629 Valid, 1779 Invalid, 9488 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1202 Valid, 8286 Invalid, 0 Unknown, 0 Unchecked, 11.8s Time] [2022-11-16 12:27:19,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22825 states. [2022-11-16 12:27:24,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22825 to 16843. [2022-11-16 12:27:24,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16843 states, 13142 states have (on average 1.5231319433876123) internal successors, (20017), 13535 states have internal predecessors, (20017), 2711 states have call successors, (2711), 780 states have call predecessors, (2711), 989 states have return successors, (5015), 2637 states have call predecessors, (5015), 2706 states have call successors, (5015) [2022-11-16 12:27:24,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16843 states to 16843 states and 27743 transitions. [2022-11-16 12:27:24,438 INFO L78 Accepts]: Start accepts. Automaton has 16843 states and 27743 transitions. Word has length 177 [2022-11-16 12:27:24,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:27:24,439 INFO L495 AbstractCegarLoop]: Abstraction has 16843 states and 27743 transitions. [2022-11-16 12:27:24,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.5) internal successors, (119), 8 states have internal predecessors, (119), 4 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (19), 7 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-16 12:27:24,439 INFO L276 IsEmpty]: Start isEmpty. Operand 16843 states and 27743 transitions. [2022-11-16 12:27:24,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-11-16 12:27:24,444 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:27:24,444 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:27:24,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-11-16 12:27:24,445 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:27:24,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:27:24,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1592751830, now seen corresponding path program 1 times [2022-11-16 12:27:24,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:27:24,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529255545] [2022-11-16 12:27:24,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:27:24,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:27:24,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:27:24,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 12:27:24,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:27:24,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:27:24,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:27:24,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:27:24,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:27:24,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-16 12:27:24,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:27:24,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:27:24,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:27:24,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 12:27:24,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:27:25,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-16 12:27:25,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:27:25,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:27:25,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:27:25,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:27:25,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:27:25,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 12:27:25,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:27:25,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:27:25,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:27:25,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-16 12:27:25,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:27:25,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 12:27:25,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:27:25,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:27:25,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:27:25,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 12:27:25,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:27:25,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 12:27:25,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:27:25,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-16 12:27:25,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:27:25,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-16 12:27:25,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:27:25,529 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-16 12:27:25,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:27:25,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529255545] [2022-11-16 12:27:25,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529255545] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:27:25,530 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:27:25,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 12:27:25,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452182849] [2022-11-16 12:27:25,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:27:25,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 12:27:25,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:27:25,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 12:27:25,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:27:25,532 INFO L87 Difference]: Start difference. First operand 16843 states and 27743 transitions. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 5 states have internal predecessors, (120), 4 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-16 12:28:06,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:28:06,211 INFO L93 Difference]: Finished difference Result 59099 states and 107920 transitions. [2022-11-16 12:28:06,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-16 12:28:06,212 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 5 states have internal predecessors, (120), 4 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) Word has length 176 [2022-11-16 12:28:06,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:28:06,600 INFO L225 Difference]: With dead ends: 59099 [2022-11-16 12:28:06,600 INFO L226 Difference]: Without dead ends: 42418 [2022-11-16 12:28:06,729 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=200, Invalid=556, Unknown=0, NotChecked=0, Total=756 [2022-11-16 12:28:06,730 INFO L413 NwaCegarLoop]: 425 mSDtfsCounter, 4394 mSDsluCounter, 1381 mSDsCounter, 0 mSdLazyCounter, 6694 mSolverCounterSat, 1937 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4456 SdHoareTripleChecker+Valid, 1806 SdHoareTripleChecker+Invalid, 8631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1937 IncrementalHoareTripleChecker+Valid, 6694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.9s IncrementalHoareTripleChecker+Time [2022-11-16 12:28:06,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4456 Valid, 1806 Invalid, 8631 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1937 Valid, 6694 Invalid, 0 Unknown, 0 Unchecked, 20.9s Time] [2022-11-16 12:28:06,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42418 states. [2022-11-16 12:28:20,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42418 to 29482. [2022-11-16 12:28:20,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29482 states, 22540 states have (on average 1.5145075421472938) internal successors, (34137), 23398 states have internal predecessors, (34137), 5225 states have call successors, (5225), 1278 states have call predecessors, (5225), 1716 states have return successors, (10153), 5185 states have call predecessors, (10153), 5220 states have call successors, (10153) [2022-11-16 12:28:20,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29482 states to 29482 states and 49515 transitions. [2022-11-16 12:28:20,848 INFO L78 Accepts]: Start accepts. Automaton has 29482 states and 49515 transitions. Word has length 176 [2022-11-16 12:28:20,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:28:20,849 INFO L495 AbstractCegarLoop]: Abstraction has 29482 states and 49515 transitions. [2022-11-16 12:28:20,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 5 states have internal predecessors, (120), 4 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-16 12:28:20,849 INFO L276 IsEmpty]: Start isEmpty. Operand 29482 states and 49515 transitions. [2022-11-16 12:28:20,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-11-16 12:28:20,860 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:28:20,860 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:28:20,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-11-16 12:28:20,860 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:28:20,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:20,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1795642710, now seen corresponding path program 1 times [2022-11-16 12:28:20,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:28:20,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929537575] [2022-11-16 12:28:20,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:20,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:28:20,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:21,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 12:28:21,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:21,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:28:21,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:21,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:28:21,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:21,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-16 12:28:21,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:21,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:28:21,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:21,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 12:28:21,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:21,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-16 12:28:21,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:21,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:28:21,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:21,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:28:21,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:22,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 12:28:22,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:22,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:28:22,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:22,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-16 12:28:22,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:22,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 12:28:22,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:22,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:28:22,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:22,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 12:28:22,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:22,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 12:28:22,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:22,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-16 12:28:22,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:22,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-16 12:28:22,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:22,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-16 12:28:22,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:22,103 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-11-16 12:28:22,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:28:22,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929537575] [2022-11-16 12:28:22,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929537575] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:28:22,104 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:28:22,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 12:28:22,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118178994] [2022-11-16 12:28:22,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:28:22,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 12:28:22,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:28:22,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 12:28:22,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:28:22,109 INFO L87 Difference]: Start difference. First operand 29482 states and 49515 transitions. Second operand has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 5 states have internal predecessors, (122), 5 states have call successors, (20), 6 states have call predecessors, (20), 3 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19)