./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec1_product23.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b 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_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec1_product23.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro --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 be08b04703653fc518e8f41dc63d028f83e90f3984633a298492c10e4ad9cfd9 --- 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-8393723 [2022-11-18 20:27:41,712 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:27:41,716 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:27:41,755 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:27:41,756 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:27:41,757 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:27:41,758 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:27:41,760 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:27:41,766 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:27:41,772 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:27:41,773 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:27:41,776 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:27:41,776 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:27:41,779 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:27:41,781 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:27:41,783 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:27:41,785 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:27:41,786 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:27:41,792 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:27:41,794 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:27:41,798 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:27:41,800 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:27:41,803 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:27:41,804 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:27:41,812 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:27:41,817 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:27:41,818 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:27:41,819 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:27:41,820 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:27:41,821 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:27:41,822 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:27:41,823 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:27:41,825 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:27:41,826 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:27:41,828 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:27:41,829 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:27:41,830 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:27:41,830 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:27:41,830 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:27:41,831 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:27:41,832 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:27:41,833 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 20:27:41,867 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:27:41,867 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:27:41,868 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:27:41,868 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:27:41,869 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:27:41,869 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:27:41,870 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:27:41,870 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:27:41,870 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:27:41,871 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:27:41,872 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:27:41,872 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:27:41,872 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:27:41,872 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:27:41,873 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:27:41,873 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:27:41,873 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:27:41,873 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:27:41,873 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:27:41,873 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:27:41,874 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:27:41,874 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:27:41,874 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:27:41,874 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:27:41,874 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:27:41,875 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:27:41,876 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:27:41,876 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:27:41,877 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:27:41,877 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:27:41,877 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:27:41,877 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:27:41,877 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:27:41,878 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_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be08b04703653fc518e8f41dc63d028f83e90f3984633a298492c10e4ad9cfd9 [2022-11-18 20:27:42,136 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:27:42,159 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:27:42,162 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:27:42,164 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:27:42,166 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:27:42,168 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/product-lines/elevator_spec1_product23.cil.c [2022-11-18 20:27:42,232 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/data/0f0917e12/8b08233114d646549dba40037dc51234/FLAGc930ff7f1 [2022-11-18 20:27:42,936 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:27:42,936 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/sv-benchmarks/c/product-lines/elevator_spec1_product23.cil.c [2022-11-18 20:27:42,964 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/data/0f0917e12/8b08233114d646549dba40037dc51234/FLAGc930ff7f1 [2022-11-18 20:27:43,138 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/data/0f0917e12/8b08233114d646549dba40037dc51234 [2022-11-18 20:27:43,141 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:27:43,143 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:27:43,147 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:27:43,147 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:27:43,151 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:27:43,151 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:27:43" (1/1) ... [2022-11-18 20:27:43,154 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b3c441 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:27:43, skipping insertion in model container [2022-11-18 20:27:43,154 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:27:43" (1/1) ... [2022-11-18 20:27:43,162 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:27:43,262 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:27:43,844 WARN L234 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_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/sv-benchmarks/c/product-lines/elevator_spec1_product23.cil.c[58338,58351] [2022-11-18 20:27:43,892 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:27:43,905 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:27:44,056 WARN L234 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_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/sv-benchmarks/c/product-lines/elevator_spec1_product23.cil.c[58338,58351] [2022-11-18 20:27:44,077 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:27:44,106 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:27:44,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:27:44 WrapperNode [2022-11-18 20:27:44,107 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:27:44,108 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:27:44,109 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:27:44,109 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:27:44,128 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:27:44" (1/1) ... [2022-11-18 20:27:44,161 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:27:44" (1/1) ... [2022-11-18 20:27:44,214 INFO L138 Inliner]: procedures = 96, calls = 348, calls flagged for inlining = 26, calls inlined = 23, statements flattened = 911 [2022-11-18 20:27:44,215 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:27:44,216 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:27:44,216 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:27:44,216 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:27:44,227 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:27:44" (1/1) ... [2022-11-18 20:27:44,227 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:27:44" (1/1) ... [2022-11-18 20:27:44,235 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:27:44" (1/1) ... [2022-11-18 20:27:44,236 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:27:44" (1/1) ... [2022-11-18 20:27:44,258 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:27:44" (1/1) ... [2022-11-18 20:27:44,273 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:27:44" (1/1) ... [2022-11-18 20:27:44,279 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:27:44" (1/1) ... [2022-11-18 20:27:44,284 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:27:44" (1/1) ... [2022-11-18 20:27:44,293 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:27:44,294 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:27:44,294 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:27:44,295 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:27:44,296 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:27:44" (1/1) ... [2022-11-18 20:27:44,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:27:44,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:27:44,335 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:27:44,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:27:44,455 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2022-11-18 20:27:44,456 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2022-11-18 20:27:44,456 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:27:44,456 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2022-11-18 20:27:44,456 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2022-11-18 20:27:44,456 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-11-18 20:27:44,456 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-11-18 20:27:44,458 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2022-11-18 20:27:44,459 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2022-11-18 20:27:44,460 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-11-18 20:27:44,460 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-11-18 20:27:44,460 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2022-11-18 20:27:44,460 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2022-11-18 20:27:44,460 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-11-18 20:27:44,461 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-11-18 20:27:44,461 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-11-18 20:27:44,461 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-11-18 20:27:44,461 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-18 20:27:44,462 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-18 20:27:44,462 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-18 20:27:44,462 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-18 20:27:44,462 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2022-11-18 20:27:44,462 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2022-11-18 20:27:44,462 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-11-18 20:27:44,462 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-11-18 20:27:44,462 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-11-18 20:27:44,463 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-11-18 20:27:44,463 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-11-18 20:27:44,463 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-11-18 20:27:44,463 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-11-18 20:27:44,463 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-11-18 20:27:44,463 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2022-11-18 20:27:44,463 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2022-11-18 20:27:44,464 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-11-18 20:27:44,464 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-11-18 20:27:44,464 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-11-18 20:27:44,464 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-11-18 20:27:44,465 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-11-18 20:27:44,465 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-11-18 20:27:44,465 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-11-18 20:27:44,465 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-11-18 20:27:44,465 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-11-18 20:27:44,465 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-11-18 20:27:44,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:27:44,465 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2022-11-18 20:27:44,466 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2022-11-18 20:27:44,466 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-11-18 20:27:44,466 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-11-18 20:27:44,466 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-11-18 20:27:44,467 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-11-18 20:27:44,467 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-11-18 20:27:44,467 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-11-18 20:27:44,467 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2022-11-18 20:27:44,468 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2022-11-18 20:27:44,469 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:27:44,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:27:44,470 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-11-18 20:27:44,471 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-11-18 20:27:44,719 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:27:44,722 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:27:46,310 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:27:46,322 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:27:46,323 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-18 20:27:46,326 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:27:46 BoogieIcfgContainer [2022-11-18 20:27:46,326 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:27:46,328 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:27:46,329 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:27:46,332 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:27:46,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:27:43" (1/3) ... [2022-11-18 20:27:46,334 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7479bfe6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:27:46, skipping insertion in model container [2022-11-18 20:27:46,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:27:44" (2/3) ... [2022-11-18 20:27:46,334 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7479bfe6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:27:46, skipping insertion in model container [2022-11-18 20:27:46,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:27:46" (3/3) ... [2022-11-18 20:27:46,336 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product23.cil.c [2022-11-18 20:27:46,381 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:27:46,381 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 20:27:46,458 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:27:46,465 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;@783cbe10, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:27:46,466 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-18 20:27:46,473 INFO L276 IsEmpty]: Start isEmpty. Operand has 594 states, 460 states have (on average 1.673913043478261) internal successors, (770), 481 states have internal predecessors, (770), 105 states have call successors, (105), 27 states have call predecessors, (105), 27 states have return successors, (105), 99 states have call predecessors, (105), 105 states have call successors, (105) [2022-11-18 20:27:46,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-11-18 20:27:46,508 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:27:46,509 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:27:46,510 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:27:46,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:27:46,516 INFO L85 PathProgramCache]: Analyzing trace with hash -694017938, now seen corresponding path program 1 times [2022-11-18 20:27:46,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:27:46,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558860613] [2022-11-18 20:27:46,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:27:46,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:27:46,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:47,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:27:47,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:47,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:27:47,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:47,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:27:47,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:47,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-18 20:27:47,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:47,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:27:47,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:47,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:27:47,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:47,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-18 20:27:47,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:48,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:27:48,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:48,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:27:48,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:48,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:27:48,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:48,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:27:48,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:48,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 20:27:48,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:48,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:27:48,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:48,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:27:48,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:48,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:27:48,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:48,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-18 20:27:48,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:48,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:27:48,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:48,117 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-18 20:27:48,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:27:48,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558860613] [2022-11-18 20:27:48,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558860613] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:27:48,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1526360009] [2022-11-18 20:27:48,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:27:48,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:27:48,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:27:48,126 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:27:48,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 20:27:48,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:48,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 1859 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-18 20:27:48,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:27:48,689 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-18 20:27:48,689 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:27:48,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1526360009] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:27:48,690 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:27:48,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 7 [2022-11-18 20:27:48,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278969205] [2022-11-18 20:27:48,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:27:48,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 20:27:48,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:27:48,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 20:27:48,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:27:48,755 INFO L87 Difference]: Start difference. First operand has 594 states, 460 states have (on average 1.673913043478261) internal successors, (770), 481 states have internal predecessors, (770), 105 states have call successors, (105), 27 states have call predecessors, (105), 27 states have return successors, (105), 99 states have call predecessors, (105), 105 states have call successors, (105) Second operand has 2 states, 2 states have (on average 35.0) internal successors, (70), 2 states have internal predecessors, (70), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2022-11-18 20:27:48,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:27:48,833 INFO L93 Difference]: Finished difference Result 615 states and 1010 transitions. [2022-11-18 20:27:48,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 20:27:48,843 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 35.0) internal successors, (70), 2 states have internal predecessors, (70), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) Word has length 127 [2022-11-18 20:27:48,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:27:48,876 INFO L225 Difference]: With dead ends: 615 [2022-11-18 20:27:48,877 INFO L226 Difference]: Without dead ends: 586 [2022-11-18 20:27:48,881 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:27:48,884 INFO L413 NwaCegarLoop]: 971 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, 971 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 [2022-11-18 20:27:48,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 971 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:27:48,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2022-11-18 20:27:48,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 586. [2022-11-18 20:27:48,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 586 states, 454 states have (on average 1.671806167400881) internal successors, (759), 473 states have internal predecessors, (759), 105 states have call successors, (105), 27 states have call predecessors, (105), 26 states have return successors, (100), 98 states have call predecessors, (100), 100 states have call successors, (100) [2022-11-18 20:27:48,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 964 transitions. [2022-11-18 20:27:48,991 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 964 transitions. Word has length 127 [2022-11-18 20:27:48,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:27:48,993 INFO L495 AbstractCegarLoop]: Abstraction has 586 states and 964 transitions. [2022-11-18 20:27:48,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 35.0) internal successors, (70), 2 states have internal predecessors, (70), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2022-11-18 20:27:48,994 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 964 transitions. [2022-11-18 20:27:49,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-18 20:27:49,003 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:27:49,003 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:27:49,018 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 20:27:49,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-18 20:27:49,213 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:27:49,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:27:49,213 INFO L85 PathProgramCache]: Analyzing trace with hash -154896382, now seen corresponding path program 1 times [2022-11-18 20:27:49,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:27:49,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342763935] [2022-11-18 20:27:49,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:27:49,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:27:49,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:49,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:27:49,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:49,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:27:49,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:49,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:27:49,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:49,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-18 20:27:49,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:49,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:27:49,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:49,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:27:49,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:49,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-18 20:27:49,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:49,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:27:49,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:50,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:27:50,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:50,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:27:50,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:50,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:27:50,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:50,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 20:27:50,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:50,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:27:50,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:50,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:27:50,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:50,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:27:50,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:50,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-18 20:27:50,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:50,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:27:50,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:50,047 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-18 20:27:50,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:27:50,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342763935] [2022-11-18 20:27:50,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342763935] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:27:50,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2012354657] [2022-11-18 20:27:50,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:27:50,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:27:50,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:27:50,050 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:27:50,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 20:27:50,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:50,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 1862 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:27:50,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:27:50,625 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-18 20:27:50,625 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:27:50,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2012354657] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:27:50,625 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:27:50,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-11-18 20:27:50,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920385571] [2022-11-18 20:27:50,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:27:50,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:27:50,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:27:50,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:27:50,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:27:50,641 INFO L87 Difference]: Start difference. First operand 586 states and 964 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, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-18 20:27:50,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:27:50,799 INFO L93 Difference]: Finished difference Result 1163 states and 1920 transitions. [2022-11-18 20:27:50,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:27:50,800 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, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 129 [2022-11-18 20:27:50,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:27:50,807 INFO L225 Difference]: With dead ends: 1163 [2022-11-18 20:27:50,807 INFO L226 Difference]: Without dead ends: 586 [2022-11-18 20:27:50,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:27:50,816 INFO L413 NwaCegarLoop]: 950 mSDtfsCounter, 14 mSDsluCounter, 1893 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2843 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 [2022-11-18 20:27:50,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2843 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:27:50,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2022-11-18 20:27:50,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 586. [2022-11-18 20:27:50,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 586 states, 454 states have (on average 1.669603524229075) internal successors, (758), 473 states have internal predecessors, (758), 105 states have call successors, (105), 27 states have call predecessors, (105), 26 states have return successors, (100), 98 states have call predecessors, (100), 100 states have call successors, (100) [2022-11-18 20:27:50,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 963 transitions. [2022-11-18 20:27:50,862 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 963 transitions. Word has length 129 [2022-11-18 20:27:50,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:27:50,862 INFO L495 AbstractCegarLoop]: Abstraction has 586 states and 963 transitions. [2022-11-18 20:27:50,862 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, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-18 20:27:50,862 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 963 transitions. [2022-11-18 20:27:50,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-11-18 20:27:50,869 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:27:50,869 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:27:50,884 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 20:27:51,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:27:51,078 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:27:51,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:27:51,079 INFO L85 PathProgramCache]: Analyzing trace with hash 847924706, now seen corresponding path program 1 times [2022-11-18 20:27:51,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:27:51,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371295284] [2022-11-18 20:27:51,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:27:51,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:27:51,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:51,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:27:51,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:51,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:27:51,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:51,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:27:51,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:51,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-18 20:27:51,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:51,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:27:51,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:51,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:27:51,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:51,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 20:27:51,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:51,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:27:51,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:51,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:27:51,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:51,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:27:51,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:51,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:27:51,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:51,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 20:27:51,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:51,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:27:51,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:51,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:27:51,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:51,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:27:51,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:51,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-18 20:27:51,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:51,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:27:51,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:51,828 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-18 20:27:51,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:27:51,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371295284] [2022-11-18 20:27:51,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371295284] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:27:51,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1966871802] [2022-11-18 20:27:51,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:27:51,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:27:51,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:27:51,835 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:27:51,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 20:27:52,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:52,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 1864 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:27:52,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:27:52,311 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-18 20:27:52,311 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:27:52,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1966871802] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:27:52,312 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:27:52,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-11-18 20:27:52,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115233943] [2022-11-18 20:27:52,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:27:52,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:27:52,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:27:52,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:27:52,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:27:52,315 INFO L87 Difference]: Start difference. First operand 586 states and 963 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-18 20:27:52,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:27:52,425 INFO L93 Difference]: Finished difference Result 1163 states and 1918 transitions. [2022-11-18 20:27:52,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:27:52,426 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 131 [2022-11-18 20:27:52,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:27:52,434 INFO L225 Difference]: With dead ends: 1163 [2022-11-18 20:27:52,434 INFO L226 Difference]: Without dead ends: 586 [2022-11-18 20:27:52,437 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:27:52,441 INFO L413 NwaCegarLoop]: 950 mSDtfsCounter, 12 mSDsluCounter, 1893 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2843 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:27:52,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2843 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:27:52,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2022-11-18 20:27:52,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 586. [2022-11-18 20:27:52,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 586 states, 454 states have (on average 1.6674008810572687) internal successors, (757), 473 states have internal predecessors, (757), 105 states have call successors, (105), 27 states have call predecessors, (105), 26 states have return successors, (100), 98 states have call predecessors, (100), 100 states have call successors, (100) [2022-11-18 20:27:52,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 962 transitions. [2022-11-18 20:27:52,506 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 962 transitions. Word has length 131 [2022-11-18 20:27:52,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:27:52,508 INFO L495 AbstractCegarLoop]: Abstraction has 586 states and 962 transitions. [2022-11-18 20:27:52,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-18 20:27:52,510 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 962 transitions. [2022-11-18 20:27:52,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-18 20:27:52,522 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:27:52,522 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:27:52,537 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-18 20:27:52,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:27:52,731 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:27:52,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:27:52,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1888259714, now seen corresponding path program 1 times [2022-11-18 20:27:52,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:27:52,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819149747] [2022-11-18 20:27:52,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:27:52,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:27:52,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:53,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:27:53,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:53,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:27:53,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:53,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:27:53,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:53,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-18 20:27:53,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:53,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:27:53,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:53,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:27:53,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:53,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-18 20:27:53,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:53,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:27:53,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:53,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:27:53,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:53,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:27:53,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:53,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:27:53,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:53,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 20:27:53,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:53,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:27:53,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:53,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:27:53,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:53,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:27:53,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:53,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-18 20:27:53,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:53,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:27:53,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:53,425 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-18 20:27:53,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:27:53,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819149747] [2022-11-18 20:27:53,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819149747] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:27:53,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [569071541] [2022-11-18 20:27:53,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:27:53,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:27:53,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:27:53,427 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:27:53,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 20:27:53,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:53,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 1866 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:27:53,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:27:53,874 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-18 20:27:53,875 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:27:53,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [569071541] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:27:53,875 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:27:53,875 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-11-18 20:27:53,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945847709] [2022-11-18 20:27:53,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:27:53,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:27:53,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:27:53,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:27:53,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:27:53,878 INFO L87 Difference]: Start difference. First operand 586 states and 962 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-18 20:27:53,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:27:53,980 INFO L93 Difference]: Finished difference Result 1170 states and 1925 transitions. [2022-11-18 20:27:53,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:27:53,981 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 133 [2022-11-18 20:27:53,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:27:53,986 INFO L225 Difference]: With dead ends: 1170 [2022-11-18 20:27:53,986 INFO L226 Difference]: Without dead ends: 595 [2022-11-18 20:27:53,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:27:53,990 INFO L413 NwaCegarLoop]: 950 mSDtfsCounter, 20 mSDsluCounter, 1893 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2843 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:27:53,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2843 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:27:53,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2022-11-18 20:27:54,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 595. [2022-11-18 20:27:54,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 595 states, 462 states have (on average 1.6645021645021645) internal successors, (769), 481 states have internal predecessors, (769), 105 states have call successors, (105), 28 states have call predecessors, (105), 27 states have return successors, (100), 98 states have call predecessors, (100), 100 states have call successors, (100) [2022-11-18 20:27:54,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 974 transitions. [2022-11-18 20:27:54,017 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 974 transitions. Word has length 133 [2022-11-18 20:27:54,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:27:54,017 INFO L495 AbstractCegarLoop]: Abstraction has 595 states and 974 transitions. [2022-11-18 20:27:54,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-18 20:27:54,018 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 974 transitions. [2022-11-18 20:27:54,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-18 20:27:54,022 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:27:54,023 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:27:54,039 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 20:27:54,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:27:54,231 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:27:54,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:27:54,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1862732698, now seen corresponding path program 1 times [2022-11-18 20:27:54,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:27:54,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373050973] [2022-11-18 20:27:54,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:27:54,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:27:54,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:54,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:27:54,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:54,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:27:54,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:54,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 20:27:54,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:54,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 20:27:54,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:54,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:27:54,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:54,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:27:54,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:54,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-18 20:27:54,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:54,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:27:54,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:54,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:27:54,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:54,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:27:54,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:54,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:27:54,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:54,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 20:27:54,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:54,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:27:54,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:54,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:27:54,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:54,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:27:54,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:54,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-18 20:27:54,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:54,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:27:54,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:54,855 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-18 20:27:54,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:27:54,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373050973] [2022-11-18 20:27:54,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373050973] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:27:54,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [134804408] [2022-11-18 20:27:54,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:27:54,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:27:54,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:27:54,867 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:27:54,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 20:27:55,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:55,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 1867 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:27:55,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:27:55,383 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-18 20:27:55,383 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:27:55,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [134804408] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:27:55,384 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:27:55,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-11-18 20:27:55,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492493382] [2022-11-18 20:27:55,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:27:55,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:27:55,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:27:55,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:27:55,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:27:55,386 INFO L87 Difference]: Start difference. First operand 595 states and 974 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-18 20:27:55,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:27:55,466 INFO L93 Difference]: Finished difference Result 1172 states and 1926 transitions. [2022-11-18 20:27:55,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:27:55,467 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 134 [2022-11-18 20:27:55,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:27:55,472 INFO L225 Difference]: With dead ends: 1172 [2022-11-18 20:27:55,472 INFO L226 Difference]: Without dead ends: 595 [2022-11-18 20:27:55,475 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:27:55,476 INFO L413 NwaCegarLoop]: 950 mSDtfsCounter, 18 mSDsluCounter, 1893 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 2843 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 [2022-11-18 20:27:55,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 2843 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:27:55,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2022-11-18 20:27:55,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 595. [2022-11-18 20:27:55,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 595 states, 462 states have (on average 1.6623376623376624) internal successors, (768), 481 states have internal predecessors, (768), 105 states have call successors, (105), 28 states have call predecessors, (105), 27 states have return successors, (100), 98 states have call predecessors, (100), 100 states have call successors, (100) [2022-11-18 20:27:55,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 973 transitions. [2022-11-18 20:27:55,502 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 973 transitions. Word has length 134 [2022-11-18 20:27:55,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:27:55,502 INFO L495 AbstractCegarLoop]: Abstraction has 595 states and 973 transitions. [2022-11-18 20:27:55,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-18 20:27:55,503 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 973 transitions. [2022-11-18 20:27:55,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-11-18 20:27:55,507 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:27:55,507 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:27:55,520 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 20:27:55,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:27:55,721 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:27:55,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:27:55,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1492949370, now seen corresponding path program 1 times [2022-11-18 20:27:55,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:27:55,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420987671] [2022-11-18 20:27:55,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:27:55,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:27:55,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:55,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:27:55,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:55,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:27:55,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:55,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-18 20:27:55,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:55,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:27:55,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:56,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:27:56,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:56,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:27:56,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:56,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-18 20:27:56,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:56,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:27:56,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:56,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:27:56,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:56,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:27:56,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:56,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:27:56,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:56,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 20:27:56,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:56,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:27:56,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:56,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:27:56,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:56,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:27:56,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:56,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-18 20:27:56,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:56,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:27:56,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:56,343 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-18 20:27:56,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:27:56,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420987671] [2022-11-18 20:27:56,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420987671] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:27:56,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685162270] [2022-11-18 20:27:56,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:27:56,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:27:56,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:27:56,346 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:27:56,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 20:27:56,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:56,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 1868 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:27:56,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:27:56,776 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-18 20:27:56,777 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:27:56,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1685162270] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:27:56,777 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:27:56,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-11-18 20:27:56,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660993195] [2022-11-18 20:27:56,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:27:56,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:27:56,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:27:56,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:27:56,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:27:56,779 INFO L87 Difference]: Start difference. First operand 595 states and 973 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-18 20:27:56,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:27:56,857 INFO L93 Difference]: Finished difference Result 1172 states and 1925 transitions. [2022-11-18 20:27:56,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:27:56,857 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 135 [2022-11-18 20:27:56,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:27:56,862 INFO L225 Difference]: With dead ends: 1172 [2022-11-18 20:27:56,863 INFO L226 Difference]: Without dead ends: 595 [2022-11-18 20:27:56,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:27:56,867 INFO L413 NwaCegarLoop]: 950 mSDtfsCounter, 17 mSDsluCounter, 1893 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 2843 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 [2022-11-18 20:27:56,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 2843 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:27:56,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2022-11-18 20:27:56,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 595. [2022-11-18 20:27:56,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 595 states, 462 states have (on average 1.6601731601731602) internal successors, (767), 481 states have internal predecessors, (767), 105 states have call successors, (105), 28 states have call predecessors, (105), 27 states have return successors, (100), 98 states have call predecessors, (100), 100 states have call successors, (100) [2022-11-18 20:27:56,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 972 transitions. [2022-11-18 20:27:56,890 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 972 transitions. Word has length 135 [2022-11-18 20:27:56,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:27:56,891 INFO L495 AbstractCegarLoop]: Abstraction has 595 states and 972 transitions. [2022-11-18 20:27:56,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-18 20:27:56,891 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 972 transitions. [2022-11-18 20:27:56,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-11-18 20:27:56,896 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:27:56,896 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:27:56,910 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 20:27:57,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:27:57,112 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:27:57,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:27:57,112 INFO L85 PathProgramCache]: Analyzing trace with hash -709255650, now seen corresponding path program 1 times [2022-11-18 20:27:57,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:27:57,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606974483] [2022-11-18 20:27:57,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:27:57,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:27:57,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:57,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:27:57,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:57,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:27:57,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:57,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:27:57,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:57,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-18 20:27:57,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:57,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:27:57,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:57,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:27:57,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:57,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-18 20:27:57,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:57,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:27:57,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:57,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:27:57,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:57,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:27:57,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:57,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:27:57,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:57,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 20:27:57,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:57,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:27:57,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:57,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:27:57,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:57,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:27:57,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:57,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-18 20:27:57,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:57,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:27:57,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:57,945 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-18 20:27:57,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:27:57,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606974483] [2022-11-18 20:27:57,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606974483] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:27:57,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1623448803] [2022-11-18 20:27:57,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:27:57,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:27:57,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:27:57,947 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:27:57,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 20:27:58,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:58,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 1869 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:27:58,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:27:58,433 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-18 20:27:58,434 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:27:58,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1623448803] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:27:58,434 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:27:58,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 14 [2022-11-18 20:27:58,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147275910] [2022-11-18 20:27:58,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:27:58,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:27:58,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:27:58,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:27:58,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-11-18 20:27:58,437 INFO L87 Difference]: Start difference. First operand 595 states and 972 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-18 20:27:58,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:27:58,627 INFO L93 Difference]: Finished difference Result 1183 states and 1946 transitions. [2022-11-18 20:27:58,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:27:58,628 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 136 [2022-11-18 20:27:58,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:27:58,634 INFO L225 Difference]: With dead ends: 1183 [2022-11-18 20:27:58,635 INFO L226 Difference]: Without dead ends: 595 [2022-11-18 20:27:58,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-11-18 20:27:58,639 INFO L413 NwaCegarLoop]: 900 mSDtfsCounter, 135 mSDsluCounter, 1760 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 2660 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 [2022-11-18 20:27:58,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 2660 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:27:58,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2022-11-18 20:27:58,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 595. [2022-11-18 20:27:58,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 595 states, 462 states have (on average 1.6493506493506493) internal successors, (762), 481 states have internal predecessors, (762), 105 states have call successors, (105), 28 states have call predecessors, (105), 27 states have return successors, (100), 98 states have call predecessors, (100), 100 states have call successors, (100) [2022-11-18 20:27:58,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 967 transitions. [2022-11-18 20:27:58,683 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 967 transitions. Word has length 136 [2022-11-18 20:27:58,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:27:58,685 INFO L495 AbstractCegarLoop]: Abstraction has 595 states and 967 transitions. [2022-11-18 20:27:58,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-18 20:27:58,686 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 967 transitions. [2022-11-18 20:27:58,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-11-18 20:27:58,691 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:27:58,691 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:27:58,708 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 20:27:58,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:27:58,908 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:27:58,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:27:58,908 INFO L85 PathProgramCache]: Analyzing trace with hash -210592336, now seen corresponding path program 1 times [2022-11-18 20:27:58,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:27:58,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376245731] [2022-11-18 20:27:58,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:27:58,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:27:58,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:59,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:27:59,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:59,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:27:59,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:59,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:27:59,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:59,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-18 20:27:59,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:59,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:27:59,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:59,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:27:59,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:59,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-18 20:27:59,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:59,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:27:59,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:59,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:27:59,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:59,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:27:59,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:59,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:27:59,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:59,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 20:27:59,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:59,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:27:59,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:59,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:27:59,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:59,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:27:59,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:59,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-18 20:27:59,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:59,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:27:59,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:59,809 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-18 20:27:59,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:27:59,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376245731] [2022-11-18 20:27:59,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376245731] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:27:59,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [528418295] [2022-11-18 20:27:59,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:27:59,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:27:59,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:27:59,815 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:27:59,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 20:28:00,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:00,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 1871 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:28:00,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:28:00,332 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-18 20:28:00,333 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:28:00,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [528418295] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:28:00,333 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:28:00,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 14 [2022-11-18 20:28:00,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911336090] [2022-11-18 20:28:00,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:28:00,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:28:00,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:28:00,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:28:00,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-11-18 20:28:00,339 INFO L87 Difference]: Start difference. First operand 595 states and 967 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-18 20:28:00,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:28:00,526 INFO L93 Difference]: Finished difference Result 1183 states and 1936 transitions. [2022-11-18 20:28:00,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:28:00,527 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 138 [2022-11-18 20:28:00,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:28:00,534 INFO L225 Difference]: With dead ends: 1183 [2022-11-18 20:28:00,534 INFO L226 Difference]: Without dead ends: 595 [2022-11-18 20:28:00,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-11-18 20:28:00,539 INFO L413 NwaCegarLoop]: 900 mSDtfsCounter, 129 mSDsluCounter, 1760 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 2660 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 [2022-11-18 20:28:00,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 2660 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:28:00,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2022-11-18 20:28:00,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 595. [2022-11-18 20:28:00,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 595 states, 462 states have (on average 1.6385281385281385) internal successors, (757), 481 states have internal predecessors, (757), 105 states have call successors, (105), 28 states have call predecessors, (105), 27 states have return successors, (100), 98 states have call predecessors, (100), 100 states have call successors, (100) [2022-11-18 20:28:00,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 962 transitions. [2022-11-18 20:28:00,566 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 962 transitions. Word has length 138 [2022-11-18 20:28:00,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:28:00,566 INFO L495 AbstractCegarLoop]: Abstraction has 595 states and 962 transitions. [2022-11-18 20:28:00,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-18 20:28:00,567 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 962 transitions. [2022-11-18 20:28:00,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-11-18 20:28:00,572 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:28:00,572 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:28:00,592 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-18 20:28:00,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-18 20:28:00,792 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:28:00,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:28:00,792 INFO L85 PathProgramCache]: Analyzing trace with hash 623000574, now seen corresponding path program 1 times [2022-11-18 20:28:00,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:28:00,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050869779] [2022-11-18 20:28:00,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:28:00,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:28:00,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:01,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:28:01,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:01,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:01,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:01,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:28:01,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:01,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 20:28:01,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:01,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:01,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:01,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:28:01,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:01,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-18 20:28:01,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:01,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:01,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:01,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:01,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:01,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:01,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:01,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:28:01,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:01,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 20:28:01,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:01,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:01,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:01,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:01,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:01,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:28:01,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:01,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-18 20:28:01,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:01,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:28:01,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:01,718 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-18 20:28:01,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:28:01,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050869779] [2022-11-18 20:28:01,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050869779] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:28:01,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2095852314] [2022-11-18 20:28:01,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:28:01,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:28:01,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:28:01,720 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:28:01,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-18 20:28:02,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:02,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 1873 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:28:02,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:28:02,257 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-18 20:28:02,257 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:28:02,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2095852314] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:28:02,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:28:02,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 14 [2022-11-18 20:28:02,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109073226] [2022-11-18 20:28:02,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:28:02,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:28:02,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:28:02,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:28:02,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-11-18 20:28:02,260 INFO L87 Difference]: Start difference. First operand 595 states and 962 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-18 20:28:02,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:28:02,504 INFO L93 Difference]: Finished difference Result 1219 states and 1985 transitions. [2022-11-18 20:28:02,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:28:02,505 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 140 [2022-11-18 20:28:02,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:28:02,511 INFO L225 Difference]: With dead ends: 1219 [2022-11-18 20:28:02,511 INFO L226 Difference]: Without dead ends: 646 [2022-11-18 20:28:02,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-11-18 20:28:02,515 INFO L413 NwaCegarLoop]: 910 mSDtfsCounter, 179 mSDsluCounter, 1760 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 2670 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:28:02,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 2670 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 20:28:02,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 646 states. [2022-11-18 20:28:02,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 646 to 646. [2022-11-18 20:28:02,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 646 states, 512 states have (on average 1.64453125) internal successors, (842), 531 states have internal predecessors, (842), 105 states have call successors, (105), 29 states have call predecessors, (105), 28 states have return successors, (100), 98 states have call predecessors, (100), 100 states have call successors, (100) [2022-11-18 20:28:02,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 1047 transitions. [2022-11-18 20:28:02,542 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 1047 transitions. Word has length 140 [2022-11-18 20:28:02,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:28:02,543 INFO L495 AbstractCegarLoop]: Abstraction has 646 states and 1047 transitions. [2022-11-18 20:28:02,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-18 20:28:02,543 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 1047 transitions. [2022-11-18 20:28:02,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-11-18 20:28:02,548 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:28:02,548 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:28:02,562 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-18 20:28:02,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-18 20:28:02,757 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:28:02,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:28:02,757 INFO L85 PathProgramCache]: Analyzing trace with hash 249317390, now seen corresponding path program 1 times [2022-11-18 20:28:02,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:28:02,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819270999] [2022-11-18 20:28:02,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:28:02,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:28:02,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:03,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:28:03,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:03,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:03,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:03,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:28:03,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:03,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-18 20:28:03,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:03,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:03,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:03,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:28:03,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:03,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-18 20:28:03,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:03,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:03,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:03,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:03,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:03,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:03,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:03,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:28:03,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:03,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 20:28:03,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:03,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:03,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:03,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:03,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:03,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:28:03,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:03,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-18 20:28:03,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:03,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:28:03,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:03,636 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-18 20:28:03,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:28:03,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819270999] [2022-11-18 20:28:03,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819270999] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:28:03,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138833636] [2022-11-18 20:28:03,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:28:03,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:28:03,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:28:03,639 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:28:03,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-18 20:28:04,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:04,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 1874 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:28:04,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:28:04,157 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-18 20:28:04,157 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:28:04,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1138833636] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:28:04,158 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:28:04,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 14 [2022-11-18 20:28:04,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972175753] [2022-11-18 20:28:04,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:28:04,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:28:04,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:28:04,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:28:04,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-11-18 20:28:04,162 INFO L87 Difference]: Start difference. First operand 646 states and 1047 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-18 20:28:04,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:28:04,386 INFO L93 Difference]: Finished difference Result 1234 states and 2009 transitions. [2022-11-18 20:28:04,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:28:04,387 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 141 [2022-11-18 20:28:04,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:28:04,392 INFO L225 Difference]: With dead ends: 1234 [2022-11-18 20:28:04,393 INFO L226 Difference]: Without dead ends: 646 [2022-11-18 20:28:04,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-11-18 20:28:04,397 INFO L413 NwaCegarLoop]: 910 mSDtfsCounter, 173 mSDsluCounter, 1760 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 2670 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:28:04,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 2670 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 20:28:04,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 646 states. [2022-11-18 20:28:04,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 646 to 646. [2022-11-18 20:28:04,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 646 states, 512 states have (on average 1.634765625) internal successors, (837), 531 states have internal predecessors, (837), 105 states have call successors, (105), 29 states have call predecessors, (105), 28 states have return successors, (100), 98 states have call predecessors, (100), 100 states have call successors, (100) [2022-11-18 20:28:04,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 1042 transitions. [2022-11-18 20:28:04,421 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 1042 transitions. Word has length 141 [2022-11-18 20:28:04,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:28:04,422 INFO L495 AbstractCegarLoop]: Abstraction has 646 states and 1042 transitions. [2022-11-18 20:28:04,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-18 20:28:04,422 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 1042 transitions. [2022-11-18 20:28:04,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-11-18 20:28:04,444 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:28:04,444 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-11-18 20:28:04,454 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-18 20:28:04,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-18 20:28:04,654 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:28:04,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:28:04,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1375379021, now seen corresponding path program 1 times [2022-11-18 20:28:04,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:28:04,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69773557] [2022-11-18 20:28:04,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:28:04,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:28:04,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:04,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:28:04,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:04,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:04,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:05,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:28:05,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:05,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-18 20:28:05,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:05,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:05,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:05,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:28:05,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:05,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-18 20:28:05,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:05,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:05,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:05,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:05,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:05,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:05,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:05,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:28:05,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:05,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 20:28:05,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:05,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:05,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:05,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:05,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:05,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:28:05,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:05,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-18 20:28:05,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:05,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:28:05,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:05,403 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-18 20:28:05,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:28:05,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69773557] [2022-11-18 20:28:05,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69773557] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:28:05,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613550106] [2022-11-18 20:28:05,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:28:05,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:28:05,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:28:05,405 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:28:05,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-18 20:28:05,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:05,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 1870 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 20:28:05,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:28:05,930 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-18 20:28:05,931 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:28:05,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [613550106] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:28:05,931 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:28:05,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2022-11-18 20:28:05,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699831770] [2022-11-18 20:28:05,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:28:05,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:28:05,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:28:05,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:28:05,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:28:05,934 INFO L87 Difference]: Start difference. First operand 646 states and 1042 transitions. Second operand has 8 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-18 20:28:06,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:28:06,185 INFO L93 Difference]: Finished difference Result 1257 states and 2039 transitions. [2022-11-18 20:28:06,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:28:06,185 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 141 [2022-11-18 20:28:06,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:28:06,191 INFO L225 Difference]: With dead ends: 1257 [2022-11-18 20:28:06,191 INFO L226 Difference]: Without dead ends: 684 [2022-11-18 20:28:06,196 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:28:06,197 INFO L413 NwaCegarLoop]: 931 mSDtfsCounter, 177 mSDsluCounter, 5479 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 6410 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 [2022-11-18 20:28:06,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 6410 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:28:06,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2022-11-18 20:28:06,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 665. [2022-11-18 20:28:06,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 665 states, 528 states have (on average 1.634469696969697) internal successors, (863), 549 states have internal predecessors, (863), 106 states have call successors, (106), 29 states have call predecessors, (106), 30 states have return successors, (103), 99 states have call predecessors, (103), 101 states have call successors, (103) [2022-11-18 20:28:06,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 1072 transitions. [2022-11-18 20:28:06,236 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 1072 transitions. Word has length 141 [2022-11-18 20:28:06,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:28:06,237 INFO L495 AbstractCegarLoop]: Abstraction has 665 states and 1072 transitions. [2022-11-18 20:28:06,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-18 20:28:06,238 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 1072 transitions. [2022-11-18 20:28:06,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-11-18 20:28:06,242 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:28:06,243 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-11-18 20:28:06,257 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-18 20:28:06,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-18 20:28:06,451 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:28:06,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:28:06,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1848897964, now seen corresponding path program 1 times [2022-11-18 20:28:06,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:28:06,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112889810] [2022-11-18 20:28:06,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:28:06,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:28:06,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:06,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:28:06,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:06,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:06,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:06,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:28:06,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:06,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-18 20:28:06,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:06,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:06,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:06,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:28:06,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:06,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-18 20:28:06,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:07,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:07,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:07,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:07,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:07,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:07,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:07,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:28:07,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:07,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 20:28:07,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:07,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:07,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:07,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:07,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:07,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:28:07,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:07,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-18 20:28:07,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:07,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:28:07,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:07,073 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-18 20:28:07,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:28:07,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112889810] [2022-11-18 20:28:07,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112889810] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:28:07,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1245401150] [2022-11-18 20:28:07,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:28:07,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:28:07,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:28:07,076 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:28:07,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-18 20:28:07,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:07,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 1869 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 20:28:07,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:28:07,663 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-18 20:28:07,663 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:28:07,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1245401150] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:28:07,664 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:28:07,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2022-11-18 20:28:07,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533146600] [2022-11-18 20:28:07,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:28:07,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:28:07,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:28:07,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:28:07,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2022-11-18 20:28:07,670 INFO L87 Difference]: Start difference. First operand 665 states and 1072 transitions. Second operand has 7 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-18 20:28:07,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:28:07,854 INFO L93 Difference]: Finished difference Result 1195 states and 1939 transitions. [2022-11-18 20:28:07,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:28:07,855 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 141 [2022-11-18 20:28:07,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:28:07,862 INFO L225 Difference]: With dead ends: 1195 [2022-11-18 20:28:07,862 INFO L226 Difference]: Without dead ends: 689 [2022-11-18 20:28:07,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:28:07,868 INFO L413 NwaCegarLoop]: 943 mSDtfsCounter, 134 mSDsluCounter, 4609 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 5552 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 [2022-11-18 20:28:07,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 5552 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:28:07,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2022-11-18 20:28:07,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 684. [2022-11-18 20:28:07,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 544 states have (on average 1.6341911764705883) internal successors, (889), 567 states have internal predecessors, (889), 107 states have call successors, (107), 29 states have call predecessors, (107), 32 states have return successors, (106), 100 states have call predecessors, (106), 102 states have call successors, (106) [2022-11-18 20:28:07,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 1102 transitions. [2022-11-18 20:28:07,912 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 1102 transitions. Word has length 141 [2022-11-18 20:28:07,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:28:07,913 INFO L495 AbstractCegarLoop]: Abstraction has 684 states and 1102 transitions. [2022-11-18 20:28:07,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-18 20:28:07,913 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 1102 transitions. [2022-11-18 20:28:07,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-11-18 20:28:07,920 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:28:07,920 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:28:07,936 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-18 20:28:08,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:28:08,130 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:28:08,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:28:08,130 INFO L85 PathProgramCache]: Analyzing trace with hash 2135401725, now seen corresponding path program 1 times [2022-11-18 20:28:08,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:28:08,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048614791] [2022-11-18 20:28:08,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:28:08,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:28:08,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:08,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:28:08,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:08,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:08,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:08,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:28:08,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:08,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-18 20:28:08,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:08,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:08,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:08,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:28:08,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:08,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-18 20:28:08,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:08,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:08,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:08,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:08,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:08,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:08,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:08,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:28:08,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:08,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 20:28:08,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:08,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:08,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:08,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:08,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:08,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:28:08,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:08,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-18 20:28:08,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:08,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:28:08,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:08,772 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-18 20:28:08,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:28:08,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048614791] [2022-11-18 20:28:08,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048614791] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:28:08,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [784008411] [2022-11-18 20:28:08,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:28:08,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:28:08,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:28:08,774 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:28:08,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-18 20:28:09,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:09,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 1870 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 20:28:09,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:28:09,327 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-18 20:28:09,327 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:28:09,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [784008411] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:28:09,327 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:28:09,328 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2022-11-18 20:28:09,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871732798] [2022-11-18 20:28:09,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:28:09,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:28:09,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:28:09,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:28:09,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2022-11-18 20:28:09,330 INFO L87 Difference]: Start difference. First operand 684 states and 1102 transitions. Second operand has 7 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-18 20:28:09,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:28:09,556 INFO L93 Difference]: Finished difference Result 1225 states and 1990 transitions. [2022-11-18 20:28:09,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:28:09,557 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 142 [2022-11-18 20:28:09,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:28:09,563 INFO L225 Difference]: With dead ends: 1225 [2022-11-18 20:28:09,563 INFO L226 Difference]: Without dead ends: 719 [2022-11-18 20:28:09,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:28:09,568 INFO L413 NwaCegarLoop]: 943 mSDtfsCounter, 143 mSDsluCounter, 4599 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 5542 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 [2022-11-18 20:28:09,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 5542 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:28:09,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 719 states. [2022-11-18 20:28:09,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 719 to 684. [2022-11-18 20:28:09,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 544 states have (on average 1.6341911764705883) internal successors, (889), 567 states have internal predecessors, (889), 107 states have call successors, (107), 29 states have call predecessors, (107), 32 states have return successors, (106), 100 states have call predecessors, (106), 102 states have call successors, (106) [2022-11-18 20:28:09,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 1102 transitions. [2022-11-18 20:28:09,616 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 1102 transitions. Word has length 142 [2022-11-18 20:28:09,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:28:09,616 INFO L495 AbstractCegarLoop]: Abstraction has 684 states and 1102 transitions. [2022-11-18 20:28:09,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-18 20:28:09,617 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 1102 transitions. [2022-11-18 20:28:09,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-11-18 20:28:09,622 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:28:09,622 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:28:09,636 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-18 20:28:09,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-18 20:28:09,831 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:28:09,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:28:09,832 INFO L85 PathProgramCache]: Analyzing trace with hash 874914173, now seen corresponding path program 1 times [2022-11-18 20:28:09,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:28:09,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077494428] [2022-11-18 20:28:09,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:28:09,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:28:09,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:10,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:28:10,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:10,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:10,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:10,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:28:10,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:10,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-18 20:28:10,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:10,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:10,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:10,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:28:10,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:10,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-18 20:28:10,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:10,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:10,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:10,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:10,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:10,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:10,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:10,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:28:10,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:10,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 20:28:10,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:10,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:10,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:10,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:10,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:10,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:28:10,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:10,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-18 20:28:10,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:10,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:28:10,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:10,558 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-18 20:28:10,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:28:10,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077494428] [2022-11-18 20:28:10,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077494428] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:28:10,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1131670984] [2022-11-18 20:28:10,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:28:10,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:28:10,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:28:10,560 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:28:10,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-18 20:28:10,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:10,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 1866 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 20:28:10,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:28:11,148 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-18 20:28:11,148 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:28:11,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1131670984] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:28:11,149 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:28:11,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2022-11-18 20:28:11,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943374000] [2022-11-18 20:28:11,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:28:11,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:28:11,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:28:11,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:28:11,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:28:11,151 INFO L87 Difference]: Start difference. First operand 684 states and 1102 transitions. Second operand has 8 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-18 20:28:11,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:28:11,372 INFO L93 Difference]: Finished difference Result 1210 states and 1964 transitions. [2022-11-18 20:28:11,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:28:11,373 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 142 [2022-11-18 20:28:11,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:28:11,379 INFO L225 Difference]: With dead ends: 1210 [2022-11-18 20:28:11,379 INFO L226 Difference]: Without dead ends: 704 [2022-11-18 20:28:11,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:28:11,383 INFO L413 NwaCegarLoop]: 933 mSDtfsCounter, 177 mSDsluCounter, 5485 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 6418 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 [2022-11-18 20:28:11,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 6418 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:28:11,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2022-11-18 20:28:11,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 684. [2022-11-18 20:28:11,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 544 states have (on average 1.6341911764705883) internal successors, (889), 567 states have internal predecessors, (889), 107 states have call successors, (107), 29 states have call predecessors, (107), 32 states have return successors, (106), 100 states have call predecessors, (106), 102 states have call successors, (106) [2022-11-18 20:28:11,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 1102 transitions. [2022-11-18 20:28:11,414 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 1102 transitions. Word has length 142 [2022-11-18 20:28:11,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:28:11,415 INFO L495 AbstractCegarLoop]: Abstraction has 684 states and 1102 transitions. [2022-11-18 20:28:11,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-18 20:28:11,416 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 1102 transitions. [2022-11-18 20:28:11,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-11-18 20:28:11,420 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:28:11,421 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:28:11,440 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-18 20:28:11,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:28:11,629 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:28:11,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:28:11,631 INFO L85 PathProgramCache]: Analyzing trace with hash -1485067790, now seen corresponding path program 1 times [2022-11-18 20:28:11,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:28:11,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492483796] [2022-11-18 20:28:11,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:28:11,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:28:11,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:11,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:28:11,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:11,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:11,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:11,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:28:11,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:11,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-18 20:28:11,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:11,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:11,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:11,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 20:28:11,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:12,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-18 20:28:12,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:12,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:12,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:12,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:12,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:12,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:12,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:12,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:28:12,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:12,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 20:28:12,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:12,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:12,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:12,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:12,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:12,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:28:12,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:12,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-18 20:28:12,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:12,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:28:12,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:12,294 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-18 20:28:12,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:28:12,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492483796] [2022-11-18 20:28:12,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492483796] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:28:12,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819294140] [2022-11-18 20:28:12,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:28:12,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:28:12,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:28:12,297 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:28:12,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-18 20:28:12,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:12,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 1870 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:28:12,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:28:12,764 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-18 20:28:12,764 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:28:12,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1819294140] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:28:12,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:28:12,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2022-11-18 20:28:12,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101101977] [2022-11-18 20:28:12,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:28:12,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:28:12,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:28:12,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:28:12,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:28:12,767 INFO L87 Difference]: Start difference. First operand 684 states and 1102 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-18 20:28:12,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:28:12,839 INFO L93 Difference]: Finished difference Result 1262 states and 2049 transitions. [2022-11-18 20:28:12,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:28:12,839 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 142 [2022-11-18 20:28:12,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:28:12,844 INFO L225 Difference]: With dead ends: 1262 [2022-11-18 20:28:12,844 INFO L226 Difference]: Without dead ends: 684 [2022-11-18 20:28:12,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-18 20:28:12,850 INFO L413 NwaCegarLoop]: 939 mSDtfsCounter, 23 mSDsluCounter, 1873 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 2812 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 [2022-11-18 20:28:12,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 2812 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:28:12,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2022-11-18 20:28:12,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 684. [2022-11-18 20:28:12,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 544 states have (on average 1.6268382352941178) internal successors, (885), 567 states have internal predecessors, (885), 107 states have call successors, (107), 29 states have call predecessors, (107), 32 states have return successors, (106), 100 states have call predecessors, (106), 102 states have call successors, (106) [2022-11-18 20:28:12,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 1098 transitions. [2022-11-18 20:28:12,876 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 1098 transitions. Word has length 142 [2022-11-18 20:28:12,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:28:12,876 INFO L495 AbstractCegarLoop]: Abstraction has 684 states and 1098 transitions. [2022-11-18 20:28:12,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-18 20:28:12,876 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 1098 transitions. [2022-11-18 20:28:12,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-11-18 20:28:12,881 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:28:12,882 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:28:12,894 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-18 20:28:13,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-18 20:28:13,090 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:28:13,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:28:13,090 INFO L85 PathProgramCache]: Analyzing trace with hash -39926044, now seen corresponding path program 1 times [2022-11-18 20:28:13,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:28:13,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542582925] [2022-11-18 20:28:13,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:28:13,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:28:13,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:13,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:28:13,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:13,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:13,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:13,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:28:13,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:13,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-18 20:28:13,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:13,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:13,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:13,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:28:13,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:13,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-18 20:28:13,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:13,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:13,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:13,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:13,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:13,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:13,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:13,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:28:13,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:13,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 20:28:13,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:13,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:13,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:13,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:13,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:13,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:28:13,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:13,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-18 20:28:13,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:13,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:28:13,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:13,766 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-18 20:28:13,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:28:13,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542582925] [2022-11-18 20:28:13,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542582925] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:28:13,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2069852885] [2022-11-18 20:28:13,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:28:13,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:28:13,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:28:13,771 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:28:13,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-18 20:28:14,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:14,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 1867 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 20:28:14,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:28:14,364 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-18 20:28:14,364 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:28:14,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2069852885] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:28:14,365 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:28:14,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2022-11-18 20:28:14,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75752009] [2022-11-18 20:28:14,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:28:14,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:28:14,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:28:14,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:28:14,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:28:14,368 INFO L87 Difference]: Start difference. First operand 684 states and 1098 transitions. Second operand has 8 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-18 20:28:14,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:28:14,594 INFO L93 Difference]: Finished difference Result 1210 states and 1961 transitions. [2022-11-18 20:28:14,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:28:14,595 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 143 [2022-11-18 20:28:14,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:28:14,601 INFO L225 Difference]: With dead ends: 1210 [2022-11-18 20:28:14,601 INFO L226 Difference]: Without dead ends: 704 [2022-11-18 20:28:14,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:28:14,605 INFO L413 NwaCegarLoop]: 927 mSDtfsCounter, 185 mSDsluCounter, 5448 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 6375 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 [2022-11-18 20:28:14,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 6375 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:28:14,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2022-11-18 20:28:14,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 684. [2022-11-18 20:28:14,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 544 states have (on average 1.6268382352941178) internal successors, (885), 567 states have internal predecessors, (885), 107 states have call successors, (107), 29 states have call predecessors, (107), 32 states have return successors, (106), 100 states have call predecessors, (106), 102 states have call successors, (106) [2022-11-18 20:28:14,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 1098 transitions. [2022-11-18 20:28:14,636 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 1098 transitions. Word has length 143 [2022-11-18 20:28:14,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:28:14,637 INFO L495 AbstractCegarLoop]: Abstraction has 684 states and 1098 transitions. [2022-11-18 20:28:14,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-18 20:28:14,638 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 1098 transitions. [2022-11-18 20:28:14,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-11-18 20:28:14,642 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:28:14,643 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:28:14,657 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-18 20:28:14,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-18 20:28:14,852 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:28:14,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:28:14,852 INFO L85 PathProgramCache]: Analyzing trace with hash -86445598, now seen corresponding path program 1 times [2022-11-18 20:28:14,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:28:14,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285672520] [2022-11-18 20:28:14,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:28:14,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:28:14,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:15,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:28:15,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:15,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:15,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:15,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:28:15,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:15,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-18 20:28:15,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:15,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:15,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:15,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:28:15,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:15,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-18 20:28:15,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:15,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:15,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:15,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:15,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:15,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:15,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:15,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:28:15,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:15,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 20:28:15,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:15,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:15,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:15,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:15,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:15,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:28:15,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:15,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-18 20:28:15,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:15,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:28:15,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:15,546 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-18 20:28:15,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:28:15,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285672520] [2022-11-18 20:28:15,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285672520] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:28:15,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344453852] [2022-11-18 20:28:15,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:28:15,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:28:15,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:28:15,549 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:28:15,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-18 20:28:15,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:15,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 1868 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:28:15,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:28:15,951 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-18 20:28:15,951 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:28:15,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1344453852] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:28:15,951 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:28:15,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2022-11-18 20:28:15,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674706301] [2022-11-18 20:28:15,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:28:15,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:28:15,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:28:15,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:28:15,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:28:15,953 INFO L87 Difference]: Start difference. First operand 684 states and 1098 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 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) [2022-11-18 20:28:16,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:28:16,023 INFO L93 Difference]: Finished difference Result 1318 states and 2131 transitions. [2022-11-18 20:28:16,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:28:16,024 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 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 144 [2022-11-18 20:28:16,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:28:16,028 INFO L225 Difference]: With dead ends: 1318 [2022-11-18 20:28:16,028 INFO L226 Difference]: Without dead ends: 720 [2022-11-18 20:28:16,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-18 20:28:16,032 INFO L413 NwaCegarLoop]: 931 mSDtfsCounter, 38 mSDsluCounter, 1857 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 2788 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 [2022-11-18 20:28:16,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 2788 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:28:16,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 720 states. [2022-11-18 20:28:16,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 720 to 708. [2022-11-18 20:28:16,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 708 states, 568 states have (on average 1.607394366197183) internal successors, (913), 591 states have internal predecessors, (913), 107 states have call successors, (107), 29 states have call predecessors, (107), 32 states have return successors, (106), 100 states have call predecessors, (106), 102 states have call successors, (106) [2022-11-18 20:28:16,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 708 states to 708 states and 1126 transitions. [2022-11-18 20:28:16,062 INFO L78 Accepts]: Start accepts. Automaton has 708 states and 1126 transitions. Word has length 144 [2022-11-18 20:28:16,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:28:16,062 INFO L495 AbstractCegarLoop]: Abstraction has 708 states and 1126 transitions. [2022-11-18 20:28:16,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 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) [2022-11-18 20:28:16,063 INFO L276 IsEmpty]: Start isEmpty. Operand 708 states and 1126 transitions. [2022-11-18 20:28:16,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-11-18 20:28:16,067 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:28:16,067 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:28:16,079 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-18 20:28:16,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-18 20:28:16,280 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:28:16,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:28:16,280 INFO L85 PathProgramCache]: Analyzing trace with hash 418923853, now seen corresponding path program 1 times [2022-11-18 20:28:16,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:28:16,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100826667] [2022-11-18 20:28:16,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:28:16,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:28:16,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:16,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:28:16,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:16,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:16,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:16,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:28:16,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:16,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-18 20:28:16,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:16,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:16,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:16,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:28:16,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:16,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-18 20:28:16,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:16,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:16,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:16,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:16,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:16,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:16,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:16,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:28:16,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:16,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 20:28:16,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:16,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:16,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:16,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:16,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:16,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:28:16,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:16,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-18 20:28:16,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:16,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:28:16,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:16,870 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-18 20:28:16,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:28:16,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100826667] [2022-11-18 20:28:16,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100826667] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:28:16,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [273011663] [2022-11-18 20:28:16,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:28:16,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:28:16,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:28:16,889 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:28:16,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-18 20:28:17,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:17,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 1871 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:28:17,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:28:17,429 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-18 20:28:17,430 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:28:17,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [273011663] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:28:17,430 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:28:17,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 13 [2022-11-18 20:28:17,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849356250] [2022-11-18 20:28:17,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:28:17,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:28:17,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:28:17,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:28:17,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-18 20:28:17,432 INFO L87 Difference]: Start difference. First operand 708 states and 1126 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 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) [2022-11-18 20:28:18,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:28:18,006 INFO L93 Difference]: Finished difference Result 1217 states and 1986 transitions. [2022-11-18 20:28:18,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:28:18,007 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 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 144 [2022-11-18 20:28:18,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:28:18,011 INFO L225 Difference]: With dead ends: 1217 [2022-11-18 20:28:18,011 INFO L226 Difference]: Without dead ends: 716 [2022-11-18 20:28:18,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-11-18 20:28:18,015 INFO L413 NwaCegarLoop]: 920 mSDtfsCounter, 896 mSDsluCounter, 1459 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 914 SdHoareTripleChecker+Valid, 2379 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:28:18,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [914 Valid, 2379 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 466 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 20:28:18,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2022-11-18 20:28:18,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 716. [2022-11-18 20:28:18,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 716 states, 575 states have (on average 1.608695652173913) internal successors, (925), 598 states have internal predecessors, (925), 107 states have call successors, (107), 30 states have call predecessors, (107), 33 states have return successors, (107), 100 states have call predecessors, (107), 102 states have call successors, (107) [2022-11-18 20:28:18,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 716 states to 716 states and 1139 transitions. [2022-11-18 20:28:18,045 INFO L78 Accepts]: Start accepts. Automaton has 716 states and 1139 transitions. Word has length 144 [2022-11-18 20:28:18,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:28:18,045 INFO L495 AbstractCegarLoop]: Abstraction has 716 states and 1139 transitions. [2022-11-18 20:28:18,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 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) [2022-11-18 20:28:18,046 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states and 1139 transitions. [2022-11-18 20:28:18,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-11-18 20:28:18,050 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:28:18,050 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:28:18,063 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-18 20:28:18,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-18 20:28:18,258 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:28:18,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:28:18,258 INFO L85 PathProgramCache]: Analyzing trace with hash -441522141, now seen corresponding path program 1 times [2022-11-18 20:28:18,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:28:18,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820886344] [2022-11-18 20:28:18,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:28:18,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:28:18,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:18,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:28:18,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:18,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:18,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:18,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:28:18,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:18,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-18 20:28:18,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:18,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:18,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:18,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:28:18,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:18,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-18 20:28:18,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:18,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:18,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:18,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:18,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:18,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:18,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:18,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:28:18,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:18,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-18 20:28:18,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:18,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:18,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:18,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:18,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:18,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:28:18,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:18,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-18 20:28:18,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:18,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-18 20:28:18,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:18,869 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-18 20:28:18,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:28:18,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820886344] [2022-11-18 20:28:18,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820886344] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:28:18,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150290263] [2022-11-18 20:28:18,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:28:18,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:28:18,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:28:18,874 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:28:18,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-18 20:28:19,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:19,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 1873 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:28:19,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:28:19,439 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-18 20:28:19,440 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:28:19,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [150290263] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:28:19,440 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:28:19,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 13 [2022-11-18 20:28:19,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000250213] [2022-11-18 20:28:19,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:28:19,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:28:19,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:28:19,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:28:19,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-18 20:28:19,443 INFO L87 Difference]: Start difference. First operand 716 states and 1139 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 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) [2022-11-18 20:28:20,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:28:20,054 INFO L93 Difference]: Finished difference Result 1233 states and 2009 transitions. [2022-11-18 20:28:20,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:28:20,055 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 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 146 [2022-11-18 20:28:20,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:28:20,062 INFO L225 Difference]: With dead ends: 1233 [2022-11-18 20:28:20,062 INFO L226 Difference]: Without dead ends: 724 [2022-11-18 20:28:20,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-11-18 20:28:20,069 INFO L413 NwaCegarLoop]: 920 mSDtfsCounter, 890 mSDsluCounter, 1459 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 908 SdHoareTripleChecker+Valid, 2379 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:28:20,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [908 Valid, 2379 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 20:28:20,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2022-11-18 20:28:20,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 724. [2022-11-18 20:28:20,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 724 states, 582 states have (on average 1.6099656357388317) internal successors, (937), 605 states have internal predecessors, (937), 107 states have call successors, (107), 31 states have call predecessors, (107), 34 states have return successors, (108), 100 states have call predecessors, (108), 102 states have call successors, (108) [2022-11-18 20:28:20,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 1152 transitions. [2022-11-18 20:28:20,100 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 1152 transitions. Word has length 146 [2022-11-18 20:28:20,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:28:20,100 INFO L495 AbstractCegarLoop]: Abstraction has 724 states and 1152 transitions. [2022-11-18 20:28:20,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 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) [2022-11-18 20:28:20,100 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 1152 transitions. [2022-11-18 20:28:20,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-11-18 20:28:20,105 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:28:20,105 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:28:20,119 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-18 20:28:20,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:28:20,313 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:28:20,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:28:20,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1879325773, now seen corresponding path program 1 times [2022-11-18 20:28:20,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:28:20,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388527524] [2022-11-18 20:28:20,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:28:20,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:28:20,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:20,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:28:20,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:20,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:20,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:20,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:28:20,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:20,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-18 20:28:20,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:20,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:20,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:20,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:28:20,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:20,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-18 20:28:20,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:20,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:20,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:20,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:20,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:20,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:20,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:20,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 20:28:20,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:20,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-18 20:28:20,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:20,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:20,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:20,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:20,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:20,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 20:28:20,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:20,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-18 20:28:20,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:20,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-18 20:28:20,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:20,920 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-18 20:28:20,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:28:20,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388527524] [2022-11-18 20:28:20,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388527524] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:28:20,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [128757637] [2022-11-18 20:28:20,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:28:20,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:28:20,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:28:20,923 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:28:20,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-18 20:28:21,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:21,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 1875 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:28:21,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:28:21,483 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-18 20:28:21,484 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:28:21,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [128757637] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:28:21,484 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:28:21,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 13 [2022-11-18 20:28:21,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734074391] [2022-11-18 20:28:21,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:28:21,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:28:21,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:28:21,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:28:21,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-18 20:28:21,486 INFO L87 Difference]: Start difference. First operand 724 states and 1152 transitions. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 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) [2022-11-18 20:28:22,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:28:22,208 INFO L93 Difference]: Finished difference Result 1249 states and 2032 transitions. [2022-11-18 20:28:22,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:28:22,209 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 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 148 [2022-11-18 20:28:22,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:28:22,216 INFO L225 Difference]: With dead ends: 1249 [2022-11-18 20:28:22,216 INFO L226 Difference]: Without dead ends: 732 [2022-11-18 20:28:22,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-11-18 20:28:22,221 INFO L413 NwaCegarLoop]: 920 mSDtfsCounter, 884 mSDsluCounter, 1459 mSDsCounter, 0 mSdLazyCounter, 458 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 902 SdHoareTripleChecker+Valid, 2379 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:28:22,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [902 Valid, 2379 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 458 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 20:28:22,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states. [2022-11-18 20:28:22,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 732. [2022-11-18 20:28:22,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 732 states, 589 states have (on average 1.6112054329371817) internal successors, (949), 612 states have internal predecessors, (949), 107 states have call successors, (107), 32 states have call predecessors, (107), 35 states have return successors, (109), 100 states have call predecessors, (109), 102 states have call successors, (109) [2022-11-18 20:28:22,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 1165 transitions. [2022-11-18 20:28:22,262 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 1165 transitions. Word has length 148 [2022-11-18 20:28:22,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:28:22,262 INFO L495 AbstractCegarLoop]: Abstraction has 732 states and 1165 transitions. [2022-11-18 20:28:22,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 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) [2022-11-18 20:28:22,263 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 1165 transitions. [2022-11-18 20:28:22,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-11-18 20:28:22,267 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:28:22,267 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:28:22,280 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2022-11-18 20:28:22,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:28:22,476 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:28:22,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:28:22,476 INFO L85 PathProgramCache]: Analyzing trace with hash 791884059, now seen corresponding path program 1 times [2022-11-18 20:28:22,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:28:22,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690038330] [2022-11-18 20:28:22,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:28:22,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:28:22,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:22,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:28:22,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:22,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:22,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:22,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:28:22,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:22,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-18 20:28:22,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:22,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:22,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:22,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:28:22,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:23,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-18 20:28:23,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:23,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:23,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:23,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:23,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:23,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:23,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:23,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-18 20:28:23,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:23,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 20:28:23,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:23,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:23,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:23,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:23,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:23,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-18 20:28:23,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:23,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 20:28:23,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:23,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-18 20:28:23,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:23,229 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-18 20:28:23,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:28:23,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690038330] [2022-11-18 20:28:23,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690038330] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:28:23,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1197894180] [2022-11-18 20:28:23,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:28:23,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:28:23,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:28:23,231 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:28:23,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-18 20:28:23,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:23,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 1877 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:28:23,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:28:23,842 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-18 20:28:23,843 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:28:23,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1197894180] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:28:23,843 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:28:23,843 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 13 [2022-11-18 20:28:23,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143792979] [2022-11-18 20:28:23,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:28:23,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:28:23,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:28:23,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:28:23,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-18 20:28:23,846 INFO L87 Difference]: Start difference. First operand 732 states and 1165 transitions. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 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) [2022-11-18 20:28:24,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:28:24,609 INFO L93 Difference]: Finished difference Result 1265 states and 2055 transitions. [2022-11-18 20:28:24,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:28:24,611 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 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 150 [2022-11-18 20:28:24,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:28:24,618 INFO L225 Difference]: With dead ends: 1265 [2022-11-18 20:28:24,619 INFO L226 Difference]: Without dead ends: 740 [2022-11-18 20:28:24,623 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-11-18 20:28:24,625 INFO L413 NwaCegarLoop]: 920 mSDtfsCounter, 893 mSDsluCounter, 1459 mSDsCounter, 0 mSdLazyCounter, 454 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 911 SdHoareTripleChecker+Valid, 2379 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:28:24,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [911 Valid, 2379 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 454 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-18 20:28:24,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 740 states. [2022-11-18 20:28:24,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 740 to 740. [2022-11-18 20:28:24,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 740 states, 596 states have (on average 1.6124161073825503) internal successors, (961), 619 states have internal predecessors, (961), 107 states have call successors, (107), 33 states have call predecessors, (107), 36 states have return successors, (110), 100 states have call predecessors, (110), 102 states have call successors, (110) [2022-11-18 20:28:24,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 740 states to 740 states and 1178 transitions. [2022-11-18 20:28:24,667 INFO L78 Accepts]: Start accepts. Automaton has 740 states and 1178 transitions. Word has length 150 [2022-11-18 20:28:24,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:28:24,668 INFO L495 AbstractCegarLoop]: Abstraction has 740 states and 1178 transitions. [2022-11-18 20:28:24,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 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) [2022-11-18 20:28:24,669 INFO L276 IsEmpty]: Start isEmpty. Operand 740 states and 1178 transitions. [2022-11-18 20:28:24,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-18 20:28:24,674 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:28:24,675 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:28:24,683 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-11-18 20:28:24,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:28:24,883 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:28:24,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:28:24,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1965866675, now seen corresponding path program 1 times [2022-11-18 20:28:24,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:28:24,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11445586] [2022-11-18 20:28:24,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:28:24,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:28:24,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:25,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:28:25,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:25,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:25,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:25,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:28:25,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:25,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-18 20:28:25,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:25,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:25,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:25,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:28:25,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:25,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-18 20:28:25,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:25,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:25,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:25,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:25,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:25,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:25,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:25,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:28:25,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:25,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-18 20:28:25,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:25,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:25,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:25,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:25,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:25,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:28:25,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:25,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:28:25,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:25,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-18 20:28:25,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:25,542 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-18 20:28:25,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:28:25,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11445586] [2022-11-18 20:28:25,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11445586] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:28:25,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [400365515] [2022-11-18 20:28:25,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:28:25,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:28:25,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:28:25,547 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:28:25,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-18 20:28:25,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:25,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 1879 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:28:25,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:28:26,279 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-18 20:28:26,280 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:28:26,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [400365515] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:28:26,280 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:28:26,280 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 13 [2022-11-18 20:28:26,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959435186] [2022-11-18 20:28:26,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:28:26,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:28:26,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:28:26,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:28:26,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-11-18 20:28:26,282 INFO L87 Difference]: Start difference. First operand 740 states and 1178 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2022-11-18 20:28:26,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:28:26,886 INFO L93 Difference]: Finished difference Result 789 states and 1250 transitions. [2022-11-18 20:28:26,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:28:26,887 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) Word has length 152 [2022-11-18 20:28:26,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:28:26,893 INFO L225 Difference]: With dead ends: 789 [2022-11-18 20:28:26,893 INFO L226 Difference]: Without dead ends: 774 [2022-11-18 20:28:26,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-11-18 20:28:26,895 INFO L413 NwaCegarLoop]: 947 mSDtfsCounter, 877 mSDsluCounter, 1476 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 885 SdHoareTripleChecker+Valid, 2423 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:28:26,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [885 Valid, 2423 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 20:28:26,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774 states. [2022-11-18 20:28:26,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774 to 743. [2022-11-18 20:28:26,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 743 states, 599 states have (on average 1.6093489148580968) internal successors, (964), 622 states have internal predecessors, (964), 107 states have call successors, (107), 33 states have call predecessors, (107), 36 states have return successors, (110), 100 states have call predecessors, (110), 102 states have call successors, (110) [2022-11-18 20:28:26,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 1181 transitions. [2022-11-18 20:28:26,933 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 1181 transitions. Word has length 152 [2022-11-18 20:28:26,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:28:26,933 INFO L495 AbstractCegarLoop]: Abstraction has 743 states and 1181 transitions. [2022-11-18 20:28:26,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2022-11-18 20:28:26,934 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 1181 transitions. [2022-11-18 20:28:26,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-11-18 20:28:26,939 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:28:26,940 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-18 20:28:26,948 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-11-18 20:28:27,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:28:27,149 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:28:27,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:28:27,150 INFO L85 PathProgramCache]: Analyzing trace with hash -768971128, now seen corresponding path program 1 times [2022-11-18 20:28:27,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:28:27,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937964510] [2022-11-18 20:28:27,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:28:27,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:28:27,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:27,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:28:27,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:27,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:27,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:27,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:28:27,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:27,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-18 20:28:27,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:27,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:27,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:27,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:28:27,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:27,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-18 20:28:27,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:27,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:27,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:27,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:27,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:27,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:27,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:27,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:28:27,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:27,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-18 20:28:27,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:27,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:27,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:27,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:27,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:27,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:28:27,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:27,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:28:27,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:27,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-18 20:28:27,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:27,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-18 20:28:27,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:27,726 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-18 20:28:27,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:28:27,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937964510] [2022-11-18 20:28:27,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937964510] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:28:27,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [113578183] [2022-11-18 20:28:27,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:28:27,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:28:27,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:28:27,728 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:28:27,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-18 20:28:28,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:28,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 1895 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:28:28,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:28:28,157 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-18 20:28:28,157 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:28:28,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [113578183] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:28:28,158 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:28:28,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2022-11-18 20:28:28,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758115431] [2022-11-18 20:28:28,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:28:28,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:28:28,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:28:28,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:28:28,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-11-18 20:28:28,160 INFO L87 Difference]: Start difference. First operand 743 states and 1181 transitions. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 1 states have call successors, (17) [2022-11-18 20:28:28,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:28:28,219 INFO L93 Difference]: Finished difference Result 760 states and 1202 transitions. [2022-11-18 20:28:28,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:28:28,220 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 1 states have call successors, (17) Word has length 158 [2022-11-18 20:28:28,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:28:28,226 INFO L225 Difference]: With dead ends: 760 [2022-11-18 20:28:28,226 INFO L226 Difference]: Without dead ends: 745 [2022-11-18 20:28:28,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-11-18 20:28:28,228 INFO L413 NwaCegarLoop]: 952 mSDtfsCounter, 37 mSDsluCounter, 2806 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 3758 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:28:28,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 3758 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:28:28,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 745 states. [2022-11-18 20:28:28,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 745 to 743. [2022-11-18 20:28:28,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 743 states, 599 states have (on average 1.6076794657762938) internal successors, (963), 622 states have internal predecessors, (963), 107 states have call successors, (107), 33 states have call predecessors, (107), 36 states have return successors, (110), 100 states have call predecessors, (110), 102 states have call successors, (110) [2022-11-18 20:28:28,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 1180 transitions. [2022-11-18 20:28:28,311 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 1180 transitions. Word has length 158 [2022-11-18 20:28:28,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:28:28,312 INFO L495 AbstractCegarLoop]: Abstraction has 743 states and 1180 transitions. [2022-11-18 20:28:28,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 1 states have call successors, (17) [2022-11-18 20:28:28,318 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 1180 transitions. [2022-11-18 20:28:28,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-11-18 20:28:28,324 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:28:28,324 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-18 20:28:28,339 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-11-18 20:28:28,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-18 20:28:28,533 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:28:28,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:28:28,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1360817918, now seen corresponding path program 1 times [2022-11-18 20:28:28,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:28:28,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67149478] [2022-11-18 20:28:28,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:28:28,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:28:28,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:28,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:28:28,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:28,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:28,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:28,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:28:28,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:28,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-18 20:28:28,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:28,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:28,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:28,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:28:28,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:29,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-18 20:28:29,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:29,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:29,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:29,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:29,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:29,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:29,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:29,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:28:29,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:29,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-18 20:28:29,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:29,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:29,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:29,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:29,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:29,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:28:29,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:29,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:28:29,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:29,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-18 20:28:29,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:29,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-18 20:28:29,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:29,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-18 20:28:29,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:29,131 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-18 20:28:29,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:28:29,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67149478] [2022-11-18 20:28:29,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67149478] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:28:29,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [987277193] [2022-11-18 20:28:29,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:28:29,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:28:29,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:28:29,135 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:28:29,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-11-18 20:28:29,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:29,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 1932 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:28:29,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:28:29,547 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-18 20:28:29,547 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:28:29,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [987277193] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:28:29,547 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:28:29,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2022-11-18 20:28:29,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353763647] [2022-11-18 20:28:29,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:28:29,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:28:29,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:28:29,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:28:29,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:28:29,549 INFO L87 Difference]: Start difference. First operand 743 states and 1180 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-18 20:28:29,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:28:29,628 INFO L93 Difference]: Finished difference Result 1460 states and 2330 transitions. [2022-11-18 20:28:29,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:28:29,629 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) Word has length 169 [2022-11-18 20:28:29,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:28:29,634 INFO L225 Difference]: With dead ends: 1460 [2022-11-18 20:28:29,634 INFO L226 Difference]: Without dead ends: 712 [2022-11-18 20:28:29,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-18 20:28:29,639 INFO L413 NwaCegarLoop]: 940 mSDtfsCounter, 11 mSDsluCounter, 1871 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2811 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 [2022-11-18 20:28:29,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2811 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:28:29,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2022-11-18 20:28:29,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 712. [2022-11-18 20:28:29,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 712 states, 571 states have (on average 1.605954465849387) internal successors, (917), 592 states have internal predecessors, (917), 106 states have call successors, (106), 33 states have call predecessors, (106), 34 states have return successors, (107), 99 states have call predecessors, (107), 101 states have call successors, (107) [2022-11-18 20:28:29,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 712 states to 712 states and 1130 transitions. [2022-11-18 20:28:29,673 INFO L78 Accepts]: Start accepts. Automaton has 712 states and 1130 transitions. Word has length 169 [2022-11-18 20:28:29,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:28:29,674 INFO L495 AbstractCegarLoop]: Abstraction has 712 states and 1130 transitions. [2022-11-18 20:28:29,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-18 20:28:29,674 INFO L276 IsEmpty]: Start isEmpty. Operand 712 states and 1130 transitions. [2022-11-18 20:28:29,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-11-18 20:28:29,679 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:28:29,679 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:28:29,688 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-11-18 20:28:29,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-18 20:28:29,888 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:28:29,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:28:29,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1868269513, now seen corresponding path program 1 times [2022-11-18 20:28:29,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:28:29,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380448284] [2022-11-18 20:28:29,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:28:29,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:28:29,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:30,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:28:30,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:30,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:30,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:30,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:28:30,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:30,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 20:28:30,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:30,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:30,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:30,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:28:30,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:30,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-18 20:28:30,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:30,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:30,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:30,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:30,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:30,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:30,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:30,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:28:30,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:30,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-18 20:28:30,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:30,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:30,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:30,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:30,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:30,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:28:30,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:30,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:28:30,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:30,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-18 20:28:30,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:30,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-18 20:28:30,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:30,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-18 20:28:30,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:30,599 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-18 20:28:30,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:28:30,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380448284] [2022-11-18 20:28:30,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380448284] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:28:30,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407889095] [2022-11-18 20:28:30,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:28:30,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:28:30,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:28:30,601 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:28:30,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-11-18 20:28:30,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:30,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 1935 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-18 20:28:30,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:28:31,031 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-18 20:28:31,031 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:28:31,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1407889095] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:28:31,032 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:28:31,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 12 [2022-11-18 20:28:31,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645082131] [2022-11-18 20:28:31,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:28:31,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:28:31,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:28:31,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:28:31,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:28:31,036 INFO L87 Difference]: Start difference. First operand 712 states and 1130 transitions. Second operand has 7 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-18 20:28:31,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:28:31,151 INFO L93 Difference]: Finished difference Result 1393 states and 2224 transitions. [2022-11-18 20:28:31,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:28:31,152 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) Word has length 171 [2022-11-18 20:28:31,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:28:31,157 INFO L225 Difference]: With dead ends: 1393 [2022-11-18 20:28:31,157 INFO L226 Difference]: Without dead ends: 712 [2022-11-18 20:28:31,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-11-18 20:28:31,161 INFO L413 NwaCegarLoop]: 958 mSDtfsCounter, 143 mSDsluCounter, 4615 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 5573 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:28:31,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 5573 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:28:31,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2022-11-18 20:28:31,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 691. [2022-11-18 20:28:31,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 691 states, 550 states have (on average 1.6054545454545455) internal successors, (883), 571 states have internal predecessors, (883), 106 states have call successors, (106), 33 states have call predecessors, (106), 34 states have return successors, (107), 99 states have call predecessors, (107), 101 states have call successors, (107) [2022-11-18 20:28:31,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 1096 transitions. [2022-11-18 20:28:31,200 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 1096 transitions. Word has length 171 [2022-11-18 20:28:31,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:28:31,200 INFO L495 AbstractCegarLoop]: Abstraction has 691 states and 1096 transitions. [2022-11-18 20:28:31,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-18 20:28:31,201 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 1096 transitions. [2022-11-18 20:28:31,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-11-18 20:28:31,210 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:28:31,210 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:28:31,227 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-11-18 20:28:31,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-11-18 20:28:31,419 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:28:31,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:28:31,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1670430564, now seen corresponding path program 1 times [2022-11-18 20:28:31,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:28:31,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140739457] [2022-11-18 20:28:31,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:28:31,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:28:31,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:31,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:28:31,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:31,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:31,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:31,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:28:31,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:31,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-18 20:28:31,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:31,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:31,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:31,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:28:31,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:31,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-18 20:28:31,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:31,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:31,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:31,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:32,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:32,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:32,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:32,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:28:32,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:32,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-18 20:28:32,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:32,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:32,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:32,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:32,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:32,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:28:32,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:32,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:28:32,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:32,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-18 20:28:32,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:32,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-18 20:28:32,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:32,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-18 20:28:32,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:32,047 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-18 20:28:32,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:28:32,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140739457] [2022-11-18 20:28:32,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140739457] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:28:32,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1587188986] [2022-11-18 20:28:32,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:28:32,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:28:32,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:28:32,049 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:28:32,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-11-18 20:28:32,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:32,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 1941 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:28:32,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:28:32,480 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-18 20:28:32,480 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:28:32,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1587188986] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:28:32,480 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:28:32,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-11-18 20:28:32,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235440309] [2022-11-18 20:28:32,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:28:32,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:28:32,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:28:32,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:28:32,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:28:32,482 INFO L87 Difference]: Start difference. First operand 691 states and 1096 transitions. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-18 20:28:32,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:28:32,610 INFO L93 Difference]: Finished difference Result 1351 states and 2158 transitions. [2022-11-18 20:28:32,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:28:32,611 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 173 [2022-11-18 20:28:32,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:28:32,615 INFO L225 Difference]: With dead ends: 1351 [2022-11-18 20:28:32,615 INFO L226 Difference]: Without dead ends: 691 [2022-11-18 20:28:32,618 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:28:32,619 INFO L413 NwaCegarLoop]: 899 mSDtfsCounter, 176 mSDsluCounter, 1745 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 2644 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 [2022-11-18 20:28:32,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 2644 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:28:32,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2022-11-18 20:28:32,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 691. [2022-11-18 20:28:32,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 691 states, 550 states have (on average 1.6036363636363635) internal successors, (882), 571 states have internal predecessors, (882), 106 states have call successors, (106), 33 states have call predecessors, (106), 34 states have return successors, (107), 99 states have call predecessors, (107), 101 states have call successors, (107) [2022-11-18 20:28:32,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 1095 transitions. [2022-11-18 20:28:32,651 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 1095 transitions. Word has length 173 [2022-11-18 20:28:32,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:28:32,652 INFO L495 AbstractCegarLoop]: Abstraction has 691 states and 1095 transitions. [2022-11-18 20:28:32,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-18 20:28:32,652 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 1095 transitions. [2022-11-18 20:28:32,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-11-18 20:28:32,657 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:28:32,657 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:28:32,670 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-11-18 20:28:32,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-18 20:28:32,866 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:28:32,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:28:32,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1243482254, now seen corresponding path program 1 times [2022-11-18 20:28:32,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:28:32,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734757170] [2022-11-18 20:28:32,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:28:32,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:28:32,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:33,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:28:33,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:33,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:33,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:33,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:28:33,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:33,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-18 20:28:33,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:33,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:33,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:33,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:28:33,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:33,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-18 20:28:33,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:33,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:33,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:33,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:33,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:33,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:33,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:33,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:28:33,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:33,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-18 20:28:33,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:33,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:33,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:33,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:33,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:33,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:28:33,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:33,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:28:33,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:33,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-18 20:28:33,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:33,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-18 20:28:33,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:33,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-18 20:28:33,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:33,400 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-18 20:28:33,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:28:33,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734757170] [2022-11-18 20:28:33,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734757170] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:28:33,400 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:28:33,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:28:33,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822962365] [2022-11-18 20:28:33,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:28:33,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:28:33,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:28:33,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:28:33,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:28:33,402 INFO L87 Difference]: Start difference. First operand 691 states and 1095 transitions. Second operand has 7 states, 7 states have (on average 16.285714285714285) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (19), 5 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-18 20:28:41,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:28:41,598 INFO L93 Difference]: Finished difference Result 1616 states and 2623 transitions. [2022-11-18 20:28:41,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:28:41,599 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.285714285714285) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (19), 5 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 174 [2022-11-18 20:28:41,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:28:41,605 INFO L225 Difference]: With dead ends: 1616 [2022-11-18 20:28:41,605 INFO L226 Difference]: Without dead ends: 942 [2022-11-18 20:28:41,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:28:41,609 INFO L413 NwaCegarLoop]: 472 mSDtfsCounter, 983 mSDsluCounter, 1387 mSDsCounter, 0 mSdLazyCounter, 3293 mSolverCounterSat, 254 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1071 SdHoareTripleChecker+Valid, 1859 SdHoareTripleChecker+Invalid, 3547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 254 IncrementalHoareTripleChecker+Valid, 3293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:28:41,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1071 Valid, 1859 Invalid, 3547 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [254 Valid, 3293 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2022-11-18 20:28:41,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 942 states. [2022-11-18 20:28:41,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 942 to 651. [2022-11-18 20:28:41,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 651 states, 513 states have (on average 1.5964912280701755) internal successors, (819), 532 states have internal predecessors, (819), 105 states have call successors, (105), 33 states have call predecessors, (105), 32 states have return successors, (104), 98 states have call predecessors, (104), 100 states have call successors, (104) [2022-11-18 20:28:41,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 1028 transitions. [2022-11-18 20:28:41,770 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 1028 transitions. Word has length 174 [2022-11-18 20:28:41,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:28:41,771 INFO L495 AbstractCegarLoop]: Abstraction has 651 states and 1028 transitions. [2022-11-18 20:28:41,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.285714285714285) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (19), 5 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-18 20:28:41,771 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 1028 transitions. [2022-11-18 20:28:41,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-11-18 20:28:41,774 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:28:41,775 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-18 20:28:41,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-18 20:28:41,775 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:28:41,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:28:41,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1107804676, now seen corresponding path program 1 times [2022-11-18 20:28:41,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:28:41,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414787723] [2022-11-18 20:28:41,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:28:41,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:28:41,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:42,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:28:42,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:42,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:42,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:42,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:28:42,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:42,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-18 20:28:42,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:42,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:42,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:42,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:28:42,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:42,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-18 20:28:42,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:42,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:42,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:42,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:42,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:42,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:42,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:42,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:28:42,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:42,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-18 20:28:42,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:42,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:42,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:42,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:42,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:42,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:28:42,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:42,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:28:42,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:42,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-18 20:28:42,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:42,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-18 20:28:42,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:42,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-18 20:28:42,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:42,371 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-18 20:28:42,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:28:42,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414787723] [2022-11-18 20:28:42,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414787723] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:28:42,372 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:28:42,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:28:42,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816951297] [2022-11-18 20:28:42,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:28:42,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:28:42,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:28:42,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:28:42,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:28:42,374 INFO L87 Difference]: Start difference. First operand 651 states and 1028 transitions. Second operand has 7 states, 7 states have (on average 16.285714285714285) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-18 20:28:49,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:28:49,853 INFO L93 Difference]: Finished difference Result 1501 states and 2432 transitions. [2022-11-18 20:28:49,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 20:28:49,853 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.285714285714285) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 175 [2022-11-18 20:28:49,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:28:49,859 INFO L225 Difference]: With dead ends: 1501 [2022-11-18 20:28:49,859 INFO L226 Difference]: Without dead ends: 951 [2022-11-18 20:28:49,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2022-11-18 20:28:49,862 INFO L413 NwaCegarLoop]: 477 mSDtfsCounter, 1506 mSDsluCounter, 1322 mSDsCounter, 0 mSdLazyCounter, 3023 mSolverCounterSat, 414 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1594 SdHoareTripleChecker+Valid, 1799 SdHoareTripleChecker+Invalid, 3437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 414 IncrementalHoareTripleChecker+Valid, 3023 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:28:49,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1594 Valid, 1799 Invalid, 3437 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [414 Valid, 3023 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2022-11-18 20:28:49,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 951 states. [2022-11-18 20:28:50,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 951 to 651. [2022-11-18 20:28:50,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 651 states, 513 states have (on average 1.594541910331384) internal successors, (818), 532 states have internal predecessors, (818), 105 states have call successors, (105), 33 states have call predecessors, (105), 32 states have return successors, (104), 98 states have call predecessors, (104), 100 states have call successors, (104) [2022-11-18 20:28:50,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 1027 transitions. [2022-11-18 20:28:50,056 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 1027 transitions. Word has length 175 [2022-11-18 20:28:50,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:28:50,056 INFO L495 AbstractCegarLoop]: Abstraction has 651 states and 1027 transitions. [2022-11-18 20:28:50,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.285714285714285) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-18 20:28:50,057 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 1027 transitions. [2022-11-18 20:28:50,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-11-18 20:28:50,060 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:28:50,060 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:28:50,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-18 20:28:50,061 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:28:50,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:28:50,061 INFO L85 PathProgramCache]: Analyzing trace with hash 963389942, now seen corresponding path program 1 times [2022-11-18 20:28:50,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:28:50,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19122021] [2022-11-18 20:28:50,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:28:50,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:28:50,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:50,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:28:50,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:50,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:50,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:50,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:28:50,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:50,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-18 20:28:50,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:50,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:50,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:50,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:28:50,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:50,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-18 20:28:50,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:50,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:50,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:50,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:50,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:50,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:50,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:50,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:28:50,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:50,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-18 20:28:50,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:50,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:50,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:50,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:50,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:50,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:28:50,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:50,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:28:50,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:50,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-18 20:28:50,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:50,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-18 20:28:50,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:50,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-18 20:28:50,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:50,641 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-11-18 20:28:50,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:28:50,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19122021] [2022-11-18 20:28:50,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19122021] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:28:50,642 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:28:50,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:28:50,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416273188] [2022-11-18 20:28:50,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:28:50,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:28:50,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:28:50,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:28:50,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:28:50,644 INFO L87 Difference]: Start difference. First operand 651 states and 1027 transitions. Second operand has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 4 states have internal predecessors, (116), 2 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-18 20:28:57,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:28:57,578 INFO L93 Difference]: Finished difference Result 1538 states and 2484 transitions. [2022-11-18 20:28:57,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 20:28:57,579 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 4 states have internal predecessors, (116), 2 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 176 [2022-11-18 20:28:57,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:28:57,584 INFO L225 Difference]: With dead ends: 1538 [2022-11-18 20:28:57,584 INFO L226 Difference]: Without dead ends: 930 [2022-11-18 20:28:57,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:28:57,586 INFO L413 NwaCegarLoop]: 475 mSDtfsCounter, 1950 mSDsluCounter, 1265 mSDsCounter, 0 mSdLazyCounter, 2818 mSolverCounterSat, 575 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2038 SdHoareTripleChecker+Valid, 1740 SdHoareTripleChecker+Invalid, 3393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 575 IncrementalHoareTripleChecker+Valid, 2818 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:28:57,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2038 Valid, 1740 Invalid, 3393 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [575 Valid, 2818 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2022-11-18 20:28:57,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 930 states. [2022-11-18 20:28:57,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 930 to 639. [2022-11-18 20:28:57,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 639 states, 501 states have (on average 1.6047904191616766) internal successors, (804), 520 states have internal predecessors, (804), 105 states have call successors, (105), 33 states have call predecessors, (105), 32 states have return successors, (104), 98 states have call predecessors, (104), 100 states have call successors, (104) [2022-11-18 20:28:57,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 1013 transitions. [2022-11-18 20:28:57,729 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 1013 transitions. Word has length 176 [2022-11-18 20:28:57,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:28:57,729 INFO L495 AbstractCegarLoop]: Abstraction has 639 states and 1013 transitions. [2022-11-18 20:28:57,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 4 states have internal predecessors, (116), 2 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-18 20:28:57,730 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 1013 transitions. [2022-11-18 20:28:57,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-11-18 20:28:57,733 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:28:57,734 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:28:57,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-18 20:28:57,734 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:28:57,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:28:57,735 INFO L85 PathProgramCache]: Analyzing trace with hash -946289672, now seen corresponding path program 1 times [2022-11-18 20:28:57,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:28:57,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095350177] [2022-11-18 20:28:57,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:28:57,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:28:57,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:57,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:28:57,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:57,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:57,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:57,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:28:58,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:58,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-18 20:28:58,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:58,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:58,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:58,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:28:58,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:58,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-18 20:28:58,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:58,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:58,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:58,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:58,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:58,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:58,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:58,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:28:58,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:58,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-18 20:28:58,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:58,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:58,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:58,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:28:58,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:58,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:28:58,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:58,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:28:58,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:58,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-18 20:28:58,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:58,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-18 20:28:58,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:58,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-18 20:28:58,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:58,319 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-18 20:28:58,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:28:58,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095350177] [2022-11-18 20:28:58,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095350177] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:28:58,320 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:28:58,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:28:58,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277785516] [2022-11-18 20:28:58,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:28:58,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:28:58,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:28:58,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:28:58,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:28:58,322 INFO L87 Difference]: Start difference. First operand 639 states and 1013 transitions. Second operand has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 4 states have internal predecessors, (115), 2 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-18 20:29:06,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:29:06,484 INFO L93 Difference]: Finished difference Result 1571 states and 2531 transitions. [2022-11-18 20:29:06,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 20:29:06,485 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 4 states have internal predecessors, (115), 2 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 176 [2022-11-18 20:29:06,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:29:06,491 INFO L225 Difference]: With dead ends: 1571 [2022-11-18 20:29:06,491 INFO L226 Difference]: Without dead ends: 969 [2022-11-18 20:29:06,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2022-11-18 20:29:06,493 INFO L413 NwaCegarLoop]: 468 mSDtfsCounter, 1064 mSDsluCounter, 1379 mSDsCounter, 0 mSdLazyCounter, 3184 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1152 SdHoareTripleChecker+Valid, 1847 SdHoareTripleChecker+Invalid, 3442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 3184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:29:06,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1152 Valid, 1847 Invalid, 3442 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [258 Valid, 3184 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2022-11-18 20:29:06,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 969 states. [2022-11-18 20:29:06,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 969 to 643. [2022-11-18 20:29:06,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 505 states have (on average 1.598019801980198) internal successors, (807), 524 states have internal predecessors, (807), 105 states have call successors, (105), 33 states have call predecessors, (105), 32 states have return successors, (104), 98 states have call predecessors, (104), 100 states have call successors, (104) [2022-11-18 20:29:06,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 1016 transitions. [2022-11-18 20:29:06,673 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 1016 transitions. Word has length 176 [2022-11-18 20:29:06,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:29:06,674 INFO L495 AbstractCegarLoop]: Abstraction has 643 states and 1016 transitions. [2022-11-18 20:29:06,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 4 states have internal predecessors, (115), 2 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-18 20:29:06,674 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 1016 transitions. [2022-11-18 20:29:06,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-11-18 20:29:06,677 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:29:06,678 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:29:06,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-18 20:29:06,678 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:29:06,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:29:06,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1566988803, now seen corresponding path program 1 times [2022-11-18 20:29:06,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:29:06,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401217884] [2022-11-18 20:29:06,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:29:06,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:29:06,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:07,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:29:07,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:07,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:29:07,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:07,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:29:07,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:07,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-18 20:29:07,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:07,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:29:07,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:07,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:29:07,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:07,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 20:29:07,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:07,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:29:07,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:08,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:29:08,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:08,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:29:08,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:08,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:29:08,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:08,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-18 20:29:08,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:08,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:29:08,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:08,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:29:08,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:08,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:29:08,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:08,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:29:08,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:08,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-18 20:29:08,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:08,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-18 20:29:08,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:08,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-18 20:29:08,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:08,115 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-11-18 20:29:08,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:29:08,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401217884] [2022-11-18 20:29:08,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401217884] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:29:08,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1969617757] [2022-11-18 20:29:08,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:29:08,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:29:08,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:29:08,119 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:29:08,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-11-18 20:29:08,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:08,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 1946 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 20:29:08,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:29:08,831 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-18 20:29:08,831 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:29:08,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1969617757] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:29:08,831 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:29:08,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [15] total 20 [2022-11-18 20:29:08,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968917304] [2022-11-18 20:29:08,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:29:08,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:29:08,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:29:08,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:29:08,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:29:08,833 INFO L87 Difference]: Start difference. First operand 643 states and 1016 transitions. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 5 states have call successors, (19), 4 states have call predecessors, (19), 4 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) [2022-11-18 20:29:12,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:29:12,443 INFO L93 Difference]: Finished difference Result 1899 states and 3093 transitions. [2022-11-18 20:29:12,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 20:29:12,444 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 5 states have call successors, (19), 4 states have call predecessors, (19), 4 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) Word has length 177 [2022-11-18 20:29:12,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:29:12,457 INFO L225 Difference]: With dead ends: 1899 [2022-11-18 20:29:12,457 INFO L226 Difference]: Without dead ends: 1363 [2022-11-18 20:29:12,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=100, Invalid=770, Unknown=0, NotChecked=0, Total=870 [2022-11-18 20:29:12,462 INFO L413 NwaCegarLoop]: 490 mSDtfsCounter, 2226 mSDsluCounter, 1570 mSDsCounter, 0 mSdLazyCounter, 4078 mSolverCounterSat, 510 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2316 SdHoareTripleChecker+Valid, 2060 SdHoareTripleChecker+Invalid, 4588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 510 IncrementalHoareTripleChecker+Valid, 4078 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-18 20:29:12,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2316 Valid, 2060 Invalid, 4588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [510 Valid, 4078 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-18 20:29:12,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1363 states. [2022-11-18 20:29:12,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1363 to 1274. [2022-11-18 20:29:12,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1274 states, 992 states have (on average 1.6189516129032258) internal successors, (1606), 1029 states have internal predecessors, (1606), 215 states have call successors, (215), 61 states have call predecessors, (215), 66 states have return successors, (241), 208 states have call predecessors, (241), 210 states have call successors, (241) [2022-11-18 20:29:12,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1274 states to 1274 states and 2062 transitions. [2022-11-18 20:29:12,898 INFO L78 Accepts]: Start accepts. Automaton has 1274 states and 2062 transitions. Word has length 177 [2022-11-18 20:29:12,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:29:12,899 INFO L495 AbstractCegarLoop]: Abstraction has 1274 states and 2062 transitions. [2022-11-18 20:29:12,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 5 states have call successors, (19), 4 states have call predecessors, (19), 4 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) [2022-11-18 20:29:12,899 INFO L276 IsEmpty]: Start isEmpty. Operand 1274 states and 2062 transitions. [2022-11-18 20:29:12,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-18 20:29:12,903 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:29:12,903 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:29:12,915 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-11-18 20:29:13,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:29:13,110 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:29:13,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:29:13,111 INFO L85 PathProgramCache]: Analyzing trace with hash -71616930, now seen corresponding path program 1 times [2022-11-18 20:29:13,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:29:13,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569188979] [2022-11-18 20:29:13,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:29:13,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:29:13,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:13,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:29:13,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:13,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:29:13,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:13,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:29:13,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:13,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-18 20:29:13,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:13,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:29:13,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:13,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:29:13,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:13,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 20:29:13,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:14,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:29:14,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:14,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:29:14,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:14,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:29:14,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:14,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:29:14,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:14,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-18 20:29:14,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:14,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:29:14,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:14,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:29:14,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:14,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:29:14,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:14,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:29:14,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:14,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:29:14,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:14,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-18 20:29:14,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:14,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-18 20:29:14,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:14,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-18 20:29:14,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:14,079 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-18 20:29:14,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:29:14,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569188979] [2022-11-18 20:29:14,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569188979] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:29:14,080 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:29:14,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 20:29:14,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769158500] [2022-11-18 20:29:14,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:29:14,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 20:29:14,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:29:14,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 20:29:14,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:29:14,082 INFO L87 Difference]: Start difference. First operand 1274 states and 2062 transitions. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 6 states have internal predecessors, (113), 4 states have call successors, (20), 5 states have call predecessors, (20), 4 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) [2022-11-18 20:29:41,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:29:41,730 INFO L93 Difference]: Finished difference Result 6379 states and 10859 transitions. [2022-11-18 20:29:41,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-18 20:29:41,731 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 6 states have internal predecessors, (113), 4 states have call successors, (20), 5 states have call predecessors, (20), 4 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) Word has length 182 [2022-11-18 20:29:41,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:29:41,773 INFO L225 Difference]: With dead ends: 6379 [2022-11-18 20:29:41,773 INFO L226 Difference]: Without dead ends: 5216 [2022-11-18 20:29:41,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=240, Invalid=572, Unknown=0, NotChecked=0, Total=812 [2022-11-18 20:29:41,782 INFO L413 NwaCegarLoop]: 730 mSDtfsCounter, 6193 mSDsluCounter, 1624 mSDsCounter, 0 mSdLazyCounter, 6826 mSolverCounterSat, 3280 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6250 SdHoareTripleChecker+Valid, 2354 SdHoareTripleChecker+Invalid, 10106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3280 IncrementalHoareTripleChecker+Valid, 6826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:29:41,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6250 Valid, 2354 Invalid, 10106 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3280 Valid, 6826 Invalid, 0 Unknown, 0 Unchecked, 23.4s Time] [2022-11-18 20:29:41,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5216 states. [2022-11-18 20:29:42,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5216 to 1303. [2022-11-18 20:29:42,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1303 states, 1015 states have (on average 1.61871921182266) internal successors, (1643), 1051 states have internal predecessors, (1643), 221 states have call successors, (221), 61 states have call predecessors, (221), 66 states have return successors, (243), 214 states have call predecessors, (243), 216 states have call successors, (243) [2022-11-18 20:29:42,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1303 states to 1303 states and 2107 transitions. [2022-11-18 20:29:42,406 INFO L78 Accepts]: Start accepts. Automaton has 1303 states and 2107 transitions. Word has length 182 [2022-11-18 20:29:42,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:29:42,406 INFO L495 AbstractCegarLoop]: Abstraction has 1303 states and 2107 transitions. [2022-11-18 20:29:42,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 6 states have internal predecessors, (113), 4 states have call successors, (20), 5 states have call predecessors, (20), 4 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) [2022-11-18 20:29:42,407 INFO L276 IsEmpty]: Start isEmpty. Operand 1303 states and 2107 transitions. [2022-11-18 20:29:42,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-18 20:29:42,410 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:29:42,410 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:29:42,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-11-18 20:29:42,410 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:29:42,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:29:42,411 INFO L85 PathProgramCache]: Analyzing trace with hash -2121004772, now seen corresponding path program 1 times [2022-11-18 20:29:42,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:29:42,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350974623] [2022-11-18 20:29:42,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:29:42,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:29:42,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:42,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:29:42,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:42,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:29:42,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:42,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:29:42,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:43,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-18 20:29:43,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:43,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:29:43,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:43,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:29:43,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:43,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 20:29:43,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:43,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:29:43,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:43,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:29:43,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:43,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:29:43,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:43,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:29:43,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:43,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-18 20:29:43,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:43,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:29:43,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:43,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:29:43,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:43,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:29:43,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:43,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:29:43,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:43,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:29:43,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:43,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-18 20:29:43,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:43,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-18 20:29:43,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:43,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-18 20:29:43,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:43,956 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-18 20:29:43,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:29:43,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350974623] [2022-11-18 20:29:43,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350974623] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:29:43,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407847577] [2022-11-18 20:29:43,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:29:43,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:29:43,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:29:43,973 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:29:43,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-11-18 20:29:44,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:44,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 1962 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 20:29:44,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:29:44,516 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-18 20:29:44,516 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:29:44,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1407847577] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:29:44,517 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:29:44,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [21] total 24 [2022-11-18 20:29:44,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236355063] [2022-11-18 20:29:44,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:29:44,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:29:44,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:29:44,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:29:44,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=492, Unknown=0, NotChecked=0, Total=552 [2022-11-18 20:29:44,519 INFO L87 Difference]: Start difference. First operand 1303 states and 2107 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2022-11-18 20:29:45,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:29:45,125 INFO L93 Difference]: Finished difference Result 1402 states and 2254 transitions. [2022-11-18 20:29:45,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:29:45,126 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) Word has length 182 [2022-11-18 20:29:45,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:29:45,132 INFO L225 Difference]: With dead ends: 1402 [2022-11-18 20:29:45,132 INFO L226 Difference]: Without dead ends: 1387 [2022-11-18 20:29:45,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 216 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=75, Invalid=627, Unknown=0, NotChecked=0, Total=702 [2022-11-18 20:29:45,134 INFO L413 NwaCegarLoop]: 974 mSDtfsCounter, 67 mSDsluCounter, 2854 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 3828 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:29:45,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 3828 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:29:45,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1387 states. [2022-11-18 20:29:45,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1387 to 1309. [2022-11-18 20:29:45,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1309 states, 1021 states have (on average 1.615083251714006) internal successors, (1649), 1057 states have internal predecessors, (1649), 221 states have call successors, (221), 61 states have call predecessors, (221), 66 states have return successors, (243), 214 states have call predecessors, (243), 216 states have call successors, (243) [2022-11-18 20:29:45,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1309 states to 1309 states and 2113 transitions. [2022-11-18 20:29:45,632 INFO L78 Accepts]: Start accepts. Automaton has 1309 states and 2113 transitions. Word has length 182 [2022-11-18 20:29:45,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:29:45,633 INFO L495 AbstractCegarLoop]: Abstraction has 1309 states and 2113 transitions. [2022-11-18 20:29:45,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2022-11-18 20:29:45,633 INFO L276 IsEmpty]: Start isEmpty. Operand 1309 states and 2113 transitions. [2022-11-18 20:29:45,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2022-11-18 20:29:45,638 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:29:45,639 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-18 20:29:45,648 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-11-18 20:29:45,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:29:45,848 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:29:45,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:29:45,848 INFO L85 PathProgramCache]: Analyzing trace with hash -583995216, now seen corresponding path program 1 times [2022-11-18 20:29:45,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:29:45,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289508933] [2022-11-18 20:29:45,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:29:45,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:29:45,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:46,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:29:46,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:46,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:29:46,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:46,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:29:46,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:46,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-18 20:29:46,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:46,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:29:46,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:46,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:29:46,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:46,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 20:29:46,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:47,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:29:47,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:47,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:29:47,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:47,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:29:47,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:47,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:29:47,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:47,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-18 20:29:47,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:47,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:29:47,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:47,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:29:47,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:47,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:29:47,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:47,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:29:47,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:47,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:29:47,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:47,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-18 20:29:47,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:47,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-18 20:29:47,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:47,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-18 20:29:47,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:47,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-18 20:29:47,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:47,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:29:47,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:47,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:29:47,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:47,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:29:47,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:47,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:29:47,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:47,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-18 20:29:47,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:47,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:29:47,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:47,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:29:47,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:47,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:29:47,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:47,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-18 20:29:47,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:47,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:29:47,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:47,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-18 20:29:47,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:47,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-18 20:29:47,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:47,697 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 15 proven. 23 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2022-11-18 20:29:47,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:29:47,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289508933] [2022-11-18 20:29:47,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289508933] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:29:47,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1116701356] [2022-11-18 20:29:47,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:29:47,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:29:47,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:29:47,699 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:29:47,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-11-18 20:29:48,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:48,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 2448 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:29:48,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:29:48,247 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2022-11-18 20:29:48,247 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:29:48,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1116701356] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:29:48,247 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:29:48,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [19] total 20 [2022-11-18 20:29:48,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163046512] [2022-11-18 20:29:48,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:29:48,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:29:48,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:29:48,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:29:48,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:29:48,250 INFO L87 Difference]: Start difference. First operand 1309 states and 2113 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) [2022-11-18 20:29:48,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:29:48,689 INFO L93 Difference]: Finished difference Result 2492 states and 4066 transitions. [2022-11-18 20:29:48,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:29:48,690 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) Word has length 277 [2022-11-18 20:29:48,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:29:48,697 INFO L225 Difference]: With dead ends: 2492 [2022-11-18 20:29:48,697 INFO L226 Difference]: Without dead ends: 1290 [2022-11-18 20:29:48,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 347 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:29:48,701 INFO L413 NwaCegarLoop]: 922 mSDtfsCounter, 912 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 912 SdHoareTripleChecker+Valid, 922 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:29:48,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [912 Valid, 922 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:29:48,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1290 states. [2022-11-18 20:29:49,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1290 to 1290. [2022-11-18 20:29:49,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1290 states, 1009 states have (on average 1.6095143706640238) internal successors, (1624), 1044 states have internal predecessors, (1624), 214 states have call successors, (214), 61 states have call predecessors, (214), 66 states have return successors, (237), 208 states have call predecessors, (237), 210 states have call successors, (237) [2022-11-18 20:29:49,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1290 states to 1290 states and 2075 transitions. [2022-11-18 20:29:49,162 INFO L78 Accepts]: Start accepts. Automaton has 1290 states and 2075 transitions. Word has length 277 [2022-11-18 20:29:49,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:29:49,163 INFO L495 AbstractCegarLoop]: Abstraction has 1290 states and 2075 transitions. [2022-11-18 20:29:49,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) [2022-11-18 20:29:49,163 INFO L276 IsEmpty]: Start isEmpty. Operand 1290 states and 2075 transitions. [2022-11-18 20:29:49,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2022-11-18 20:29:49,168 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:29:49,168 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:29:49,179 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-11-18 20:29:49,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-11-18 20:29:49,377 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:29:49,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:29:49,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1041600474, now seen corresponding path program 1 times [2022-11-18 20:29:49,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:29:49,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226374872] [2022-11-18 20:29:49,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:29:49,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:29:49,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:50,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:29:50,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:50,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:29:50,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:50,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:29:50,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:50,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-18 20:29:50,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:50,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:29:50,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:50,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:29:50,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:50,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 20:29:50,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:50,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:29:50,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:50,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:29:50,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:50,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:29:50,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:50,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:29:50,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:50,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-18 20:29:50,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:50,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:29:50,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:50,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:29:50,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:50,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:29:50,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:50,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:29:50,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:50,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:29:50,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:50,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-18 20:29:50,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:50,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-18 20:29:50,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:50,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-18 20:29:50,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:50,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-18 20:29:50,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:51,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:29:51,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:51,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:29:51,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:51,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:29:51,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:51,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:29:51,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:51,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-18 20:29:51,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:51,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:29:51,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:51,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:29:51,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:51,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:29:51,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:51,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-18 20:29:51,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:51,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:29:51,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:51,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-18 20:29:51,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:51,093 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 19 proven. 23 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2022-11-18 20:29:51,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:29:51,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226374872] [2022-11-18 20:29:51,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226374872] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:29:51,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1232932158] [2022-11-18 20:29:51,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:29:51,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:29:51,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:29:51,101 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:29:51,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-11-18 20:29:51,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:51,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 2435 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:29:51,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:29:51,838 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 33 proven. 88 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-11-18 20:29:51,839 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:29:52,364 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2022-11-18 20:29:52,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1232932158] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:29:52,365 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:29:52,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 5, 5] total 23 [2022-11-18 20:29:52,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295930920] [2022-11-18 20:29:52,366 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:29:52,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-18 20:29:52,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:29:52,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-18 20:29:52,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=450, Unknown=0, NotChecked=0, Total=506 [2022-11-18 20:29:52,368 INFO L87 Difference]: Start difference. First operand 1290 states and 2075 transitions. Second operand has 23 states, 23 states have (on average 11.956521739130435) internal successors, (275), 17 states have internal predecessors, (275), 9 states have call successors, (58), 8 states have call predecessors, (58), 10 states have return successors, (58), 13 states have call predecessors, (58), 9 states have call successors, (58) [2022-11-18 20:31:00,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:31:00,118 INFO L93 Difference]: Finished difference Result 9668 states and 17216 transitions. [2022-11-18 20:31:00,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2022-11-18 20:31:00,119 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 11.956521739130435) internal successors, (275), 17 states have internal predecessors, (275), 9 states have call successors, (58), 8 states have call predecessors, (58), 10 states have return successors, (58), 13 states have call predecessors, (58), 9 states have call successors, (58) Word has length 275 [2022-11-18 20:31:00,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:31:00,200 INFO L225 Difference]: With dead ends: 9668 [2022-11-18 20:31:00,200 INFO L226 Difference]: Without dead ends: 8485 [2022-11-18 20:31:00,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 767 GetRequests, 634 SyntacticMatches, 2 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6418 ImplicationChecksByTransitivity, 15.9s TimeCoverageRelationStatistics Valid=2160, Invalid=15396, Unknown=0, NotChecked=0, Total=17556 [2022-11-18 20:31:00,228 INFO L413 NwaCegarLoop]: 1559 mSDtfsCounter, 13729 mSDsluCounter, 17717 mSDsCounter, 0 mSdLazyCounter, 44131 mSolverCounterSat, 7852 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13735 SdHoareTripleChecker+Valid, 19276 SdHoareTripleChecker+Invalid, 51983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.6s SdHoareTripleChecker+Time, 7852 IncrementalHoareTripleChecker+Valid, 44131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 45.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:31:00,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13735 Valid, 19276 Invalid, 51983 Unknown, 0 Unchecked, 0.6s Time], IncrementalHoareTripleChecker [7852 Valid, 44131 Invalid, 0 Unknown, 0 Unchecked, 45.7s Time] [2022-11-18 20:31:00,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8485 states. [2022-11-18 20:31:02,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8485 to 4580. [2022-11-18 20:31:02,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4580 states, 3521 states have (on average 1.5745526838966202) internal successors, (5544), 3659 states have internal predecessors, (5544), 777 states have call successors, (777), 192 states have call predecessors, (777), 281 states have return successors, (1116), 786 states have call predecessors, (1116), 773 states have call successors, (1116) [2022-11-18 20:31:02,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4580 states to 4580 states and 7437 transitions. [2022-11-18 20:31:02,415 INFO L78 Accepts]: Start accepts. Automaton has 4580 states and 7437 transitions. Word has length 275 [2022-11-18 20:31:02,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:31:02,416 INFO L495 AbstractCegarLoop]: Abstraction has 4580 states and 7437 transitions. [2022-11-18 20:31:02,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 11.956521739130435) internal successors, (275), 17 states have internal predecessors, (275), 9 states have call successors, (58), 8 states have call predecessors, (58), 10 states have return successors, (58), 13 states have call predecessors, (58), 9 states have call successors, (58) [2022-11-18 20:31:02,416 INFO L276 IsEmpty]: Start isEmpty. Operand 4580 states and 7437 transitions. [2022-11-18 20:31:02,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2022-11-18 20:31:02,435 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:31:02,436 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-18 20:31:02,446 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-11-18 20:31:02,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:31:02,646 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:31:02,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:31:02,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1529018327, now seen corresponding path program 1 times [2022-11-18 20:31:02,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:31:02,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989140352] [2022-11-18 20:31:02,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:31:02,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:31:02,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:03,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:31:03,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:03,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:31:03,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:03,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:31:03,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:03,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-18 20:31:03,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:03,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:31:03,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:03,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:31:03,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:03,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-18 20:31:03,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:03,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:31:03,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:03,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:31:03,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:03,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:31:03,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:03,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:31:03,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:03,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-18 20:31:03,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:03,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:31:03,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:03,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:31:03,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:03,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:31:03,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:03,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:31:03,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:03,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:31:03,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:03,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-18 20:31:03,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:03,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-18 20:31:03,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:03,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-18 20:31:03,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:03,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-18 20:31:03,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:03,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:31:03,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:03,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:31:03,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:03,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:31:03,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:03,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:31:03,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:03,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:31:03,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:03,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-18 20:31:03,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:03,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:31:03,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:03,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:31:03,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:03,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:31:03,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:03,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-18 20:31:03,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:03,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:31:03,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:03,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-18 20:31:03,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:03,783 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2022-11-18 20:31:03,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:31:03,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989140352] [2022-11-18 20:31:03,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989140352] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:31:03,784 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:31:03,784 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:31:03,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873812528] [2022-11-18 20:31:03,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:31:03,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:31:03,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:31:03,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:31:03,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:31:03,787 INFO L87 Difference]: Start difference. First operand 4580 states and 7437 transitions. Second operand has 7 states, 7 states have (on average 19.714285714285715) internal successors, (138), 4 states have internal predecessors, (138), 2 states have call successors, (24), 5 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-18 20:31:14,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:31:14,157 INFO L93 Difference]: Finished difference Result 10066 states and 16623 transitions. [2022-11-18 20:31:14,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 20:31:14,158 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.714285714285715) internal successors, (138), 4 states have internal predecessors, (138), 2 states have call successors, (24), 5 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 280 [2022-11-18 20:31:14,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:31:14,197 INFO L225 Difference]: With dead ends: 10066 [2022-11-18 20:31:14,197 INFO L226 Difference]: Without dead ends: 5637 [2022-11-18 20:31:14,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-11-18 20:31:14,216 INFO L413 NwaCegarLoop]: 460 mSDtfsCounter, 1434 mSDsluCounter, 1271 mSDsCounter, 0 mSdLazyCounter, 3009 mSolverCounterSat, 404 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1520 SdHoareTripleChecker+Valid, 1731 SdHoareTripleChecker+Invalid, 3413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 404 IncrementalHoareTripleChecker+Valid, 3009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:31:14,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1520 Valid, 1731 Invalid, 3413 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [404 Valid, 3009 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2022-11-18 20:31:14,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5637 states. [2022-11-18 20:31:16,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5637 to 4592. [2022-11-18 20:31:16,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4592 states, 3533 states have (on average 1.5737333710727428) internal successors, (5560), 3671 states have internal predecessors, (5560), 777 states have call successors, (777), 192 states have call predecessors, (777), 281 states have return successors, (1116), 786 states have call predecessors, (1116), 773 states have call successors, (1116) [2022-11-18 20:31:16,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4592 states to 4592 states and 7453 transitions. [2022-11-18 20:31:16,792 INFO L78 Accepts]: Start accepts. Automaton has 4592 states and 7453 transitions. Word has length 280 [2022-11-18 20:31:16,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:31:16,793 INFO L495 AbstractCegarLoop]: Abstraction has 4592 states and 7453 transitions. [2022-11-18 20:31:16,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.714285714285715) internal successors, (138), 4 states have internal predecessors, (138), 2 states have call successors, (24), 5 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-18 20:31:16,793 INFO L276 IsEmpty]: Start isEmpty. Operand 4592 states and 7453 transitions. [2022-11-18 20:31:16,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2022-11-18 20:31:16,806 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:31:16,807 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-18 20:31:16,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-11-18 20:31:16,807 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:31:16,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:31:16,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1609395979, now seen corresponding path program 1 times [2022-11-18 20:31:16,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:31:16,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494425184] [2022-11-18 20:31:16,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:31:16,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:31:16,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:17,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:31:17,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:17,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:31:17,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:17,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:31:17,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:17,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-18 20:31:17,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:17,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:31:17,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:17,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:31:17,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:17,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-18 20:31:17,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:17,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:31:17,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:17,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:31:17,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:17,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:31:17,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:17,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:31:17,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:17,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-18 20:31:17,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:17,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:31:17,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:17,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:31:17,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:17,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:31:17,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:17,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:31:17,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:17,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:31:17,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:17,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-18 20:31:17,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:17,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-18 20:31:17,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:17,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-18 20:31:17,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:17,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-18 20:31:17,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:17,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:31:17,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:17,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:31:17,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:17,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:31:17,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:17,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:31:17,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:17,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:31:17,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:17,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-18 20:31:17,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:17,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:31:17,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:17,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:31:17,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:17,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:31:17,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:17,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-18 20:31:17,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:17,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:31:17,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:17,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-18 20:31:17,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:17,642 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2022-11-18 20:31:17,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:31:17,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494425184] [2022-11-18 20:31:17,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494425184] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:31:17,643 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:31:17,643 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:31:17,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833037157] [2022-11-18 20:31:17,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:31:17,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:31:17,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:31:17,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:31:17,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:31:17,645 INFO L87 Difference]: Start difference. First operand 4592 states and 7453 transitions. Second operand has 7 states, 7 states have (on average 19.428571428571427) internal successors, (136), 4 states have internal predecessors, (136), 2 states have call successors, (24), 5 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-18 20:31:28,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:31:28,585 INFO L93 Difference]: Finished difference Result 10261 states and 16892 transitions. [2022-11-18 20:31:28,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 20:31:28,585 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.428571428571427) internal successors, (136), 4 states have internal predecessors, (136), 2 states have call successors, (24), 5 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 280 [2022-11-18 20:31:28,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:31:28,617 INFO L225 Difference]: With dead ends: 10261 [2022-11-18 20:31:28,617 INFO L226 Difference]: Without dead ends: 5706 [2022-11-18 20:31:28,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2022-11-18 20:31:28,638 INFO L413 NwaCegarLoop]: 460 mSDtfsCounter, 1530 mSDsluCounter, 1271 mSDsCounter, 0 mSdLazyCounter, 2923 mSolverCounterSat, 407 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1616 SdHoareTripleChecker+Valid, 1731 SdHoareTripleChecker+Invalid, 3330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 407 IncrementalHoareTripleChecker+Valid, 2923 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-11-18 20:31:28,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1616 Valid, 1731 Invalid, 3330 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [407 Valid, 2923 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2022-11-18 20:31:28,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5706 states. [2022-11-18 20:31:30,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5706 to 4602. [2022-11-18 20:31:30,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4602 states, 3543 states have (on average 1.5712672876093705) internal successors, (5567), 3681 states have internal predecessors, (5567), 777 states have call successors, (777), 192 states have call predecessors, (777), 281 states have return successors, (1116), 786 states have call predecessors, (1116), 773 states have call successors, (1116) [2022-11-18 20:31:30,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4602 states to 4602 states and 7460 transitions. [2022-11-18 20:31:30,725 INFO L78 Accepts]: Start accepts. Automaton has 4602 states and 7460 transitions. Word has length 280 [2022-11-18 20:31:30,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:31:30,726 INFO L495 AbstractCegarLoop]: Abstraction has 4602 states and 7460 transitions. [2022-11-18 20:31:30,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.428571428571427) internal successors, (136), 4 states have internal predecessors, (136), 2 states have call successors, (24), 5 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-18 20:31:30,726 INFO L276 IsEmpty]: Start isEmpty. Operand 4602 states and 7460 transitions. [2022-11-18 20:31:30,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2022-11-18 20:31:30,740 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:31:30,740 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-18 20:31:30,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-11-18 20:31:30,741 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:31:30,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:31:30,742 INFO L85 PathProgramCache]: Analyzing trace with hash 318528057, now seen corresponding path program 1 times [2022-11-18 20:31:30,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:31:30,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927491325] [2022-11-18 20:31:30,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:31:30,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:31:30,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:31,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:31:31,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:31,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:31:31,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:31,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:31:31,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:31,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-18 20:31:31,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:31,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:31:31,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:31,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:31:31,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:31,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-18 20:31:31,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:31,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:31:31,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:31,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:31:31,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:31,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:31:31,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:31,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:31:31,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:31,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-18 20:31:31,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:31,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:31:31,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:31,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:31:31,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:31,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:31:31,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:31,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:31:31,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:31,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:31:31,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:31,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-18 20:31:31,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:31,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-18 20:31:31,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:31,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-18 20:31:31,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:31,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-18 20:31:31,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:31,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:31:31,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:31,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:31:31,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:31,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:31:31,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:31,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:31:31,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:31,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:31:31,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:31,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-18 20:31:31,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:31,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:31:31,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:31,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:31:31,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:31,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:31:31,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:31,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-18 20:31:31,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:31,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:31:31,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:31,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-18 20:31:31,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:31,655 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2022-11-18 20:31:31,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:31:31,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927491325] [2022-11-18 20:31:31,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927491325] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:31:31,656 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:31:31,656 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:31:31,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447429948] [2022-11-18 20:31:31,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:31:31,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:31:31,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:31:31,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:31:31,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:31:31,659 INFO L87 Difference]: Start difference. First operand 4602 states and 7460 transitions. Second operand has 7 states, 7 states have (on average 19.571428571428573) internal successors, (137), 4 states have internal predecessors, (137), 2 states have call successors, (24), 5 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-18 20:31:42,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:31:42,423 INFO L93 Difference]: Finished difference Result 9889 states and 16318 transitions. [2022-11-18 20:31:42,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 20:31:42,424 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.571428571428573) internal successors, (137), 4 states have internal predecessors, (137), 2 states have call successors, (24), 5 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 281 [2022-11-18 20:31:42,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:31:42,462 INFO L225 Difference]: With dead ends: 9889 [2022-11-18 20:31:42,462 INFO L226 Difference]: Without dead ends: 5563 [2022-11-18 20:31:42,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2022-11-18 20:31:42,479 INFO L413 NwaCegarLoop]: 460 mSDtfsCounter, 1958 mSDsluCounter, 1220 mSDsCounter, 0 mSdLazyCounter, 2869 mSolverCounterSat, 564 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2044 SdHoareTripleChecker+Valid, 1680 SdHoareTripleChecker+Invalid, 3433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 564 IncrementalHoareTripleChecker+Valid, 2869 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:31:42,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2044 Valid, 1680 Invalid, 3433 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [564 Valid, 2869 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2022-11-18 20:31:42,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5563 states. [2022-11-18 20:31:44,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5563 to 4542. [2022-11-18 20:31:44,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4542 states, 3491 states have (on average 1.57404755084503) internal successors, (5495), 3628 states have internal predecessors, (5495), 774 states have call successors, (774), 189 states have call predecessors, (774), 276 states have return successors, (1111), 782 states have call predecessors, (1111), 770 states have call successors, (1111) [2022-11-18 20:31:44,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4542 states to 4542 states and 7380 transitions. [2022-11-18 20:31:44,658 INFO L78 Accepts]: Start accepts. Automaton has 4542 states and 7380 transitions. Word has length 281 [2022-11-18 20:31:44,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:31:44,663 INFO L495 AbstractCegarLoop]: Abstraction has 4542 states and 7380 transitions. [2022-11-18 20:31:44,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.571428571428573) internal successors, (137), 4 states have internal predecessors, (137), 2 states have call successors, (24), 5 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-18 20:31:44,663 INFO L276 IsEmpty]: Start isEmpty. Operand 4542 states and 7380 transitions. [2022-11-18 20:31:44,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2022-11-18 20:31:44,672 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:31:44,673 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-18 20:31:44,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-11-18 20:31:44,673 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:31:44,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:31:44,673 INFO L85 PathProgramCache]: Analyzing trace with hash 384429239, now seen corresponding path program 1 times [2022-11-18 20:31:44,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:31:44,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185407328] [2022-11-18 20:31:44,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:31:44,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:31:44,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:45,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:31:45,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:45,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:31:45,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:45,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:31:45,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:45,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-18 20:31:45,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:45,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:31:45,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:45,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:31:45,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:45,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-18 20:31:45,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:45,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:31:45,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:45,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:31:45,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:45,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:31:45,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:45,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:31:45,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:45,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-18 20:31:45,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:45,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:31:45,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:45,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:31:45,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:45,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:31:45,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:45,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:31:45,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:45,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:31:45,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:45,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-18 20:31:45,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:45,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-18 20:31:45,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:45,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-18 20:31:45,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:45,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-18 20:31:45,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:45,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:31:45,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:45,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:31:45,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:45,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:31:45,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:45,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:31:45,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:45,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:31:45,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:45,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-18 20:31:45,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:45,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:31:45,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:45,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:31:45,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:45,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:31:45,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:45,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-18 20:31:45,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:45,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:31:45,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:45,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-18 20:31:45,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:45,519 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2022-11-18 20:31:45,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:31:45,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185407328] [2022-11-18 20:31:45,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185407328] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:31:45,520 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:31:45,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:31:45,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250631548] [2022-11-18 20:31:45,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:31:45,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:31:45,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:31:45,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:31:45,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:31:45,522 INFO L87 Difference]: Start difference. First operand 4542 states and 7380 transitions. Second operand has 7 states, 7 states have (on average 20.0) internal successors, (140), 4 states have internal predecessors, (140), 2 states have call successors, (24), 5 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-18 20:31:56,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:31:56,729 INFO L93 Difference]: Finished difference Result 10002 states and 16525 transitions. [2022-11-18 20:31:56,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 20:31:56,730 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 4 states have internal predecessors, (140), 2 states have call successors, (24), 5 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 284 [2022-11-18 20:31:56,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:31:56,767 INFO L225 Difference]: With dead ends: 10002 [2022-11-18 20:31:56,767 INFO L226 Difference]: Without dead ends: 5576 [2022-11-18 20:31:56,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-11-18 20:31:56,787 INFO L413 NwaCegarLoop]: 460 mSDtfsCounter, 977 mSDsluCounter, 1341 mSDsCounter, 0 mSdLazyCounter, 3281 mSolverCounterSat, 248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1063 SdHoareTripleChecker+Valid, 1801 SdHoareTripleChecker+Invalid, 3529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 248 IncrementalHoareTripleChecker+Valid, 3281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:31:56,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1063 Valid, 1801 Invalid, 3529 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [248 Valid, 3281 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2022-11-18 20:31:56,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5576 states. [2022-11-18 20:31:58,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5576 to 4542. [2022-11-18 20:31:58,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4542 states, 3491 states have (on average 1.573761099971355) internal successors, (5494), 3628 states have internal predecessors, (5494), 774 states have call successors, (774), 189 states have call predecessors, (774), 276 states have return successors, (1111), 782 states have call predecessors, (1111), 770 states have call successors, (1111) [2022-11-18 20:31:59,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4542 states to 4542 states and 7379 transitions. [2022-11-18 20:31:59,012 INFO L78 Accepts]: Start accepts. Automaton has 4542 states and 7379 transitions. Word has length 284 [2022-11-18 20:31:59,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:31:59,012 INFO L495 AbstractCegarLoop]: Abstraction has 4542 states and 7379 transitions. [2022-11-18 20:31:59,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 4 states have internal predecessors, (140), 2 states have call successors, (24), 5 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-18 20:31:59,013 INFO L276 IsEmpty]: Start isEmpty. Operand 4542 states and 7379 transitions. [2022-11-18 20:31:59,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2022-11-18 20:31:59,027 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:31:59,027 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-18 20:31:59,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-11-18 20:31:59,028 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:31:59,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:31:59,028 INFO L85 PathProgramCache]: Analyzing trace with hash 251578481, now seen corresponding path program 1 times [2022-11-18 20:31:59,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:31:59,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104659268] [2022-11-18 20:31:59,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:31:59,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:31:59,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:59,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:31:59,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:59,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:31:59,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:59,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:31:59,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:59,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-18 20:31:59,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:59,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:31:59,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:59,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:31:59,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:59,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-18 20:31:59,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:59,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:31:59,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:59,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:31:59,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:59,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:31:59,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:59,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:31:59,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:59,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-18 20:31:59,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:59,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:31:59,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:59,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:31:59,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:59,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:31:59,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:59,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:31:59,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:59,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:31:59,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:59,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-18 20:31:59,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:59,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-18 20:31:59,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:59,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-18 20:31:59,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:59,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-18 20:31:59,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:59,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:31:59,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:59,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:31:59,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:59,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:31:59,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:59,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:31:59,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:59,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:31:59,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:59,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-18 20:31:59,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:59,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:31:59,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:59,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:31:59,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:59,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:31:59,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:59,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-18 20:31:59,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:59,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:31:59,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:59,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-18 20:31:59,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:59,938 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2022-11-18 20:31:59,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:31:59,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104659268] [2022-11-18 20:31:59,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104659268] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:31:59,939 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:31:59,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 20:31:59,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299091445] [2022-11-18 20:31:59,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:31:59,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 20:31:59,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:31:59,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 20:31:59,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:31:59,941 INFO L87 Difference]: Start difference. First operand 4542 states and 7379 transitions. Second operand has 10 states, 9 states have (on average 16.11111111111111) internal successors, (145), 6 states have internal predecessors, (145), 3 states have call successors, (24), 5 states have call predecessors, (24), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-11-18 20:32:11,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:32:11,381 INFO L93 Difference]: Finished difference Result 7090 states and 11580 transitions. [2022-11-18 20:32:11,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 20:32:11,382 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 16.11111111111111) internal successors, (145), 6 states have internal predecessors, (145), 3 states have call successors, (24), 5 states have call predecessors, (24), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 284 [2022-11-18 20:32:11,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:32:11,395 INFO L225 Difference]: With dead ends: 7090 [2022-11-18 20:32:11,395 INFO L226 Difference]: Without dead ends: 2646 [2022-11-18 20:32:11,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:32:11,406 INFO L413 NwaCegarLoop]: 454 mSDtfsCounter, 1011 mSDsluCounter, 2662 mSDsCounter, 0 mSdLazyCounter, 5712 mSolverCounterSat, 246 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1095 SdHoareTripleChecker+Valid, 3116 SdHoareTripleChecker+Invalid, 5958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 246 IncrementalHoareTripleChecker+Valid, 5712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:32:11,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1095 Valid, 3116 Invalid, 5958 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [246 Valid, 5712 Invalid, 0 Unknown, 0 Unchecked, 8.6s Time] [2022-11-18 20:32:11,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2646 states. [2022-11-18 20:32:12,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2646 to 2140. [2022-11-18 20:32:12,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2140 states, 1666 states have (on average 1.5756302521008403) internal successors, (2625), 1730 states have internal predecessors, (2625), 340 states have call successors, (340), 98 states have call predecessors, (340), 133 states have return successors, (462), 335 states have call predecessors, (462), 336 states have call successors, (462) [2022-11-18 20:32:12,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2140 states to 2140 states and 3427 transitions. [2022-11-18 20:32:12,486 INFO L78 Accepts]: Start accepts. Automaton has 2140 states and 3427 transitions. Word has length 284 [2022-11-18 20:32:12,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:32:12,487 INFO L495 AbstractCegarLoop]: Abstraction has 2140 states and 3427 transitions. [2022-11-18 20:32:12,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 16.11111111111111) internal successors, (145), 6 states have internal predecessors, (145), 3 states have call successors, (24), 5 states have call predecessors, (24), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-11-18 20:32:12,487 INFO L276 IsEmpty]: Start isEmpty. Operand 2140 states and 3427 transitions. [2022-11-18 20:32:12,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2022-11-18 20:32:12,492 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:32:12,492 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:32:12,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-11-18 20:32:12,494 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:32:12,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:32:12,495 INFO L85 PathProgramCache]: Analyzing trace with hash -930400230, now seen corresponding path program 1 times [2022-11-18 20:32:12,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:32:12,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917750579] [2022-11-18 20:32:12,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:32:12,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:32:12,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:12,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:32:12,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:12,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:32:12,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:12,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:32:12,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:12,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-18 20:32:12,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:12,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:32:12,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:12,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:32:12,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:13,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 20:32:13,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:13,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:32:13,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:13,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:32:13,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:13,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:32:13,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:13,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:32:13,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:13,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:32:13,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:13,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:32:13,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:13,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-18 20:32:13,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:13,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:32:13,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:13,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:32:13,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:13,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:32:13,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:13,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-18 20:32:13,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:13,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:32:13,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:13,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-18 20:32:13,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:13,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-18 20:32:13,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:13,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-18 20:32:13,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:13,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-18 20:32:13,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:13,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:32:13,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:13,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:32:13,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:13,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:32:13,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:13,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:32:13,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:13,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:32:13,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:13,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-18 20:32:13,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:13,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:32:13,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:13,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:32:13,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:13,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:32:13,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:13,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-18 20:32:13,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:13,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:32:13,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:13,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-18 20:32:13,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:13,697 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2022-11-18 20:32:13,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:32:13,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917750579] [2022-11-18 20:32:13,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917750579] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:32:13,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1332804553] [2022-11-18 20:32:13,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:32:13,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:32:13,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:32:13,705 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:32:13,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-11-18 20:32:14,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:14,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 2475 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 20:32:14,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:32:14,718 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 14 proven. 34 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2022-11-18 20:32:14,719 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:32:16,585 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 17 proven. 36 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2022-11-18 20:32:16,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1332804553] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:32:16,592 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:32:16,592 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 14] total 34 [2022-11-18 20:32:16,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896765812] [2022-11-18 20:32:16,593 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:32:16,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-18 20:32:16,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:32:16,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-18 20:32:16,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=1023, Unknown=0, NotChecked=0, Total=1122 [2022-11-18 20:32:16,608 INFO L87 Difference]: Start difference. First operand 2140 states and 3427 transitions. Second operand has 34 states, 32 states have (on average 9.75) internal successors, (312), 26 states have internal predecessors, (312), 14 states have call successors, (67), 9 states have call predecessors, (67), 15 states have return successors, (69), 19 states have call predecessors, (69), 14 states have call successors, (69) [2022-11-18 20:34:38,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:34:38,607 INFO L93 Difference]: Finished difference Result 12345 states and 21579 transitions. [2022-11-18 20:34:38,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 210 states. [2022-11-18 20:34:38,608 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 32 states have (on average 9.75) internal successors, (312), 26 states have internal predecessors, (312), 14 states have call successors, (67), 9 states have call predecessors, (67), 15 states have return successors, (69), 19 states have call predecessors, (69), 14 states have call successors, (69) Word has length 289 [2022-11-18 20:34:38,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:34:38,661 INFO L225 Difference]: With dead ends: 12345 [2022-11-18 20:34:38,661 INFO L226 Difference]: Without dead ends: 9367 [2022-11-18 20:34:38,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 964 GetRequests, 720 SyntacticMatches, 5 SemanticMatches, 239 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22489 ImplicationChecksByTransitivity, 55.7s TimeCoverageRelationStatistics Valid=5897, Invalid=51943, Unknown=0, NotChecked=0, Total=57840 [2022-11-18 20:34:38,696 INFO L413 NwaCegarLoop]: 973 mSDtfsCounter, 21820 mSDsluCounter, 14714 mSDsCounter, 0 mSdLazyCounter, 52188 mSolverCounterSat, 14728 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 68.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21820 SdHoareTripleChecker+Valid, 15687 SdHoareTripleChecker+Invalid, 66916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.7s SdHoareTripleChecker+Time, 14728 IncrementalHoareTripleChecker+Valid, 52188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 76.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:34:38,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21820 Valid, 15687 Invalid, 66916 Unknown, 0 Unchecked, 0.7s Time], IncrementalHoareTripleChecker [14728 Valid, 52188 Invalid, 0 Unknown, 0 Unchecked, 76.3s Time] [2022-11-18 20:34:38,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9367 states. [2022-11-18 20:34:42,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9367 to 7213. [2022-11-18 20:34:42,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7213 states, 5530 states have (on average 1.554249547920434) internal successors, (8595), 5759 states have internal predecessors, (8595), 1213 states have call successors, (1213), 341 states have call predecessors, (1213), 469 states have return successors, (1777), 1208 states have call predecessors, (1777), 1209 states have call successors, (1777) [2022-11-18 20:34:42,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7213 states to 7213 states and 11585 transitions. [2022-11-18 20:34:42,566 INFO L78 Accepts]: Start accepts. Automaton has 7213 states and 11585 transitions. Word has length 289 [2022-11-18 20:34:42,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:34:42,567 INFO L495 AbstractCegarLoop]: Abstraction has 7213 states and 11585 transitions. [2022-11-18 20:34:42,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 32 states have (on average 9.75) internal successors, (312), 26 states have internal predecessors, (312), 14 states have call successors, (67), 9 states have call predecessors, (67), 15 states have return successors, (69), 19 states have call predecessors, (69), 14 states have call successors, (69) [2022-11-18 20:34:42,567 INFO L276 IsEmpty]: Start isEmpty. Operand 7213 states and 11585 transitions. [2022-11-18 20:34:42,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2022-11-18 20:34:42,572 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:34:42,572 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 5, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:34:42,588 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-11-18 20:34:42,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fc0e7f-a424-4cb1-a09c-f51b4ac7750f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:34:42,783 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:34:42,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:34:42,783 INFO L85 PathProgramCache]: Analyzing trace with hash -866407785, now seen corresponding path program 1 times [2022-11-18 20:34:42,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:34:42,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504096492] [2022-11-18 20:34:42,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:34:42,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:34:42,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:43,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:34:43,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:43,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:34:43,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:43,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:34:43,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:43,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-18 20:34:43,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:43,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:34:43,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:43,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:34:43,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:43,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 20:34:43,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:43,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:34:43,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:43,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:34:43,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:43,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:34:43,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:43,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:34:43,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:43,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:34:43,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:43,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:34:43,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:43,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-18 20:34:43,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:43,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:34:43,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:43,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:34:43,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:43,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 20:34:43,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:43,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-18 20:34:43,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:43,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:34:43,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:43,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-18 20:34:43,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:43,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-18 20:34:43,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:43,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-18 20:34:43,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:43,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-18 20:34:43,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:43,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-11-18 20:34:43,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:43,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-11-18 20:34:43,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:43,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-11-18 20:34:43,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:43,832 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-11-18 20:34:43,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:34:43,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504096492] [2022-11-18 20:34:43,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504096492] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:34:43,833 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:34:43,833 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-18 20:34:43,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487192621] [2022-11-18 20:34:43,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:34:43,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 20:34:43,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:34:43,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 20:34:43,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:34:43,835 INFO L87 Difference]: Start difference. First operand 7213 states and 11585 transitions. Second operand has 12 states, 12 states have (on average 12.083333333333334) internal successors, (145), 7 states have internal predecessors, (145), 3 states have call successors, (26), 5 states have call predecessors, (26), 4 states have return successors, (25), 5 states have call predecessors, (25), 3 states have call successors, (25) [2022-11-18 20:35:14,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:35:14,043 INFO L93 Difference]: Finished difference Result 25777 states and 45428 transitions. [2022-11-18 20:35:14,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-18 20:35:14,044 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 12.083333333333334) internal successors, (145), 7 states have internal predecessors, (145), 3 states have call successors, (26), 5 states have call predecessors, (26), 4 states have return successors, (25), 5 states have call predecessors, (25), 3 states have call successors, (25) Word has length 243 [2022-11-18 20:35:14,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:35:14,178 INFO L225 Difference]: With dead ends: 25777 [2022-11-18 20:35:14,178 INFO L226 Difference]: Without dead ends: 18680 [2022-11-18 20:35:14,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=243, Invalid=1017, Unknown=0, NotChecked=0, Total=1260 [2022-11-18 20:35:14,217 INFO L413 NwaCegarLoop]: 602 mSDtfsCounter, 3313 mSDsluCounter, 4410 mSDsCounter, 0 mSdLazyCounter, 8911 mSolverCounterSat, 1136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3394 SdHoareTripleChecker+Valid, 5012 SdHoareTripleChecker+Invalid, 10047 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1136 IncrementalHoareTripleChecker+Valid, 8911 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:35:14,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3394 Valid, 5012 Invalid, 10047 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1136 Valid, 8911 Invalid, 0 Unknown, 0 Unchecked, 15.2s Time] [2022-11-18 20:35:14,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18680 states. [2022-11-18 20:35:20,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18680 to 13815. [2022-11-18 20:35:20,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13815 states, 10550 states have (on average 1.539905213270142) internal successors, (16246), 10964 states have internal predecessors, (16246), 2354 states have call successors, (2354), 635 states have call predecessors, (2354), 910 states have return successors, (4243), 2407 states have call predecessors, (4243), 2350 states have call successors, (4243) [2022-11-18 20:35:20,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13815 states to 13815 states and 22843 transitions. [2022-11-18 20:35:20,707 INFO L78 Accepts]: Start accepts. Automaton has 13815 states and 22843 transitions. Word has length 243 [2022-11-18 20:35:20,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:35:20,707 INFO L495 AbstractCegarLoop]: Abstraction has 13815 states and 22843 transitions. [2022-11-18 20:35:20,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.083333333333334) internal successors, (145), 7 states have internal predecessors, (145), 3 states have call successors, (26), 5 states have call predecessors, (26), 4 states have return successors, (25), 5 states have call predecessors, (25), 3 states have call successors, (25) [2022-11-18 20:35:20,708 INFO L276 IsEmpty]: Start isEmpty. Operand 13815 states and 22843 transitions. [2022-11-18 20:35:20,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2022-11-18 20:35:20,712 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:35:20,713 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 5, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:35:20,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-11-18 20:35:20,713 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:35:20,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:35:20,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1851352581, now seen corresponding path program 1 times [2022-11-18 20:35:20,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:35:20,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532023442] [2022-11-18 20:35:20,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:20,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:35:20,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:20,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:35:21,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:21,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:35:21,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:21,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:35:21,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:21,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-18 20:35:21,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:21,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:35:21,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:21,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:35:21,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:21,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 20:35:21,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:21,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:35:21,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:21,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:35:21,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:21,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:35:21,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:21,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:35:21,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:21,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:35:21,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:21,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:35:21,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:21,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-18 20:35:21,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:21,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:35:21,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:21,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:35:21,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:21,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 20:35:21,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:21,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-18 20:35:21,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:21,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:35:21,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:21,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-18 20:35:21,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:21,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-18 20:35:21,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:21,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-18 20:35:21,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:21,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-18 20:35:21,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:21,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-11-18 20:35:21,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:21,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-11-18 20:35:21,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:21,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-11-18 20:35:21,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:21,654 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-11-18 20:35:21,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:35:21,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532023442] [2022-11-18 20:35:21,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532023442] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:35:21,655 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:35:21,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-18 20:35:21,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961746637] [2022-11-18 20:35:21,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:35:21,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 20:35:21,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:35:21,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 20:35:21,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:35:21,657 INFO L87 Difference]: Start difference. First operand 13815 states and 22843 transitions. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 7 states have internal predecessors, (147), 3 states have call successors, (26), 5 states have call predecessors, (26), 4 states have return successors, (25), 5 states have call predecessors, (25), 3 states have call successors, (25) [2022-11-18 20:35:59,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:35:59,224 INFO L93 Difference]: Finished difference Result 50375 states and 95037 transitions. [2022-11-18 20:35:59,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-18 20:35:59,225 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 7 states have internal predecessors, (147), 3 states have call successors, (26), 5 states have call predecessors, (26), 4 states have return successors, (25), 5 states have call predecessors, (25), 3 states have call successors, (25) Word has length 245 [2022-11-18 20:35:59,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:35:59,602 INFO L225 Difference]: With dead ends: 50375 [2022-11-18 20:35:59,602 INFO L226 Difference]: Without dead ends: 36680 [2022-11-18 20:35:59,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=243, Invalid=1017, Unknown=0, NotChecked=0, Total=1260 [2022-11-18 20:35:59,706 INFO L413 NwaCegarLoop]: 623 mSDtfsCounter, 4145 mSDsluCounter, 4471 mSDsCounter, 0 mSdLazyCounter, 8714 mSolverCounterSat, 1393 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4227 SdHoareTripleChecker+Valid, 5094 SdHoareTripleChecker+Invalid, 10107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1393 IncrementalHoareTripleChecker+Valid, 8714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:35:59,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4227 Valid, 5094 Invalid, 10107 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1393 Valid, 8714 Invalid, 0 Unknown, 0 Unchecked, 14.0s Time] [2022-11-18 20:35:59,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36680 states. [2022-11-18 20:36:13,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36680 to 27041. [2022-11-18 20:36:13,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27041 states, 20607 states have (on average 1.5365652448197213) internal successors, (31664), 21404 states have internal predecessors, (31664), 4651 states have call successors, (4651), 1236 states have call predecessors, (4651), 1782 states have return successors, (9847), 4784 states have call predecessors, (9847), 4647 states have call successors, (9847) [2022-11-18 20:36:13,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27041 states to 27041 states and 46162 transitions. [2022-11-18 20:36:13,534 INFO L78 Accepts]: Start accepts. Automaton has 27041 states and 46162 transitions. Word has length 245 [2022-11-18 20:36:13,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:36:13,534 INFO L495 AbstractCegarLoop]: Abstraction has 27041 states and 46162 transitions. [2022-11-18 20:36:13,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 7 states have internal predecessors, (147), 3 states have call successors, (26), 5 states have call predecessors, (26), 4 states have return successors, (25), 5 states have call predecessors, (25), 3 states have call successors, (25) [2022-11-18 20:36:13,535 INFO L276 IsEmpty]: Start isEmpty. Operand 27041 states and 46162 transitions. [2022-11-18 20:36:13,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2022-11-18 20:36:13,544 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:36:13,545 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 5, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:36:13,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-11-18 20:36:13,545 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:36:13,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:36:13,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1405642249, now seen corresponding path program 1 times [2022-11-18 20:36:13,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:36:13,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279723593] [2022-11-18 20:36:13,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:36:13,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:36:13,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:13,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:36:13,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:13,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:36:13,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:13,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:36:13,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:13,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-18 20:36:13,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:13,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:36:13,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:13,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:36:13,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:14,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 20:36:14,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:14,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:36:14,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:14,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:36:14,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:14,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:36:14,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:14,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:36:14,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:14,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:36:14,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:14,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:36:14,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:14,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-18 20:36:14,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:14,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:36:14,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:14,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:36:14,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:14,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-18 20:36:14,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:14,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 20:36:14,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:14,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:36:14,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:14,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-18 20:36:14,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:14,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-18 20:36:14,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:14,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-18 20:36:14,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:14,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-18 20:36:14,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:14,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-11-18 20:36:14,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:14,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-11-18 20:36:14,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:14,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-11-18 20:36:14,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:14,547 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-11-18 20:36:14,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:36:14,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279723593] [2022-11-18 20:36:14,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279723593] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:36:14,548 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:36:14,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 20:36:14,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488435246] [2022-11-18 20:36:14,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:36:14,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:36:14,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:36:14,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:36:14,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:36:14,550 INFO L87 Difference]: Start difference. First operand 27041 states and 46162 transitions. Second operand has 8 states, 8 states have (on average 18.5) internal successors, (148), 5 states have internal predecessors, (148), 3 states have call successors, (26), 5 states have call predecessors, (26), 2 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25)