./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--device_handler--scsi_dh_rdac.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 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_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--device_handler--scsi_dh_rdac.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS --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 64bit --witnessprinter.graph.data.programhash 230b725329634d718374ec3f6d82161758e5d9913588383fdc3e35a9fd1533f5 --- 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-4e7fbc6 [2022-11-23 02:30:40,823 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 02:30:40,827 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 02:30:40,881 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 02:30:40,882 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 02:30:40,887 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 02:30:40,890 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 02:30:40,895 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 02:30:40,898 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 02:30:40,905 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 02:30:40,907 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 02:30:40,910 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 02:30:40,911 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 02:30:40,914 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 02:30:40,916 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 02:30:40,918 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 02:30:40,921 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 02:30:40,922 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 02:30:40,924 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 02:30:40,933 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 02:30:40,935 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 02:30:40,936 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 02:30:40,938 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 02:30:40,939 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 02:30:40,948 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 02:30:40,949 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 02:30:40,949 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 02:30:40,950 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 02:30:40,951 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 02:30:40,952 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 02:30:40,952 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 02:30:40,953 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 02:30:40,954 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 02:30:40,955 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 02:30:40,956 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 02:30:40,957 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 02:30:40,958 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 02:30:40,958 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 02:30:40,958 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 02:30:40,968 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 02:30:40,969 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 02:30:40,970 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-23 02:30:41,022 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 02:30:41,024 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 02:30:41,024 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 02:30:41,025 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 02:30:41,026 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 02:30:41,026 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 02:30:41,045 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 02:30:41,045 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 02:30:41,046 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 02:30:41,046 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 02:30:41,047 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 02:30:41,048 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 02:30:41,048 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 02:30:41,048 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 02:30:41,049 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 02:30:41,049 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 02:30:41,049 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 02:30:41,049 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 02:30:41,050 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 02:30:41,050 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 02:30:41,050 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 02:30:41,050 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 02:30:41,051 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 02:30:41,051 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 02:30:41,051 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 02:30:41,052 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-23 02:30:41,052 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 02:30:41,052 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 02:30:41,053 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 02:30:41,053 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 02:30:41,054 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 02:30:41,054 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 230b725329634d718374ec3f6d82161758e5d9913588383fdc3e35a9fd1533f5 [2022-11-23 02:30:41,374 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 02:30:41,412 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 02:30:41,416 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 02:30:41,418 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 02:30:41,418 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 02:30:41,420 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--device_handler--scsi_dh_rdac.ko-entry_point.cil.out.i [2022-11-23 02:30:44,619 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 02:30:45,190 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 02:30:45,190 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--device_handler--scsi_dh_rdac.ko-entry_point.cil.out.i [2022-11-23 02:30:45,246 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/data/869c77708/815301be673b4a389cf36f1449589bf0/FLAG09cd6f0c9 [2022-11-23 02:30:45,274 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/data/869c77708/815301be673b4a389cf36f1449589bf0 [2022-11-23 02:30:45,279 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 02:30:45,282 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 02:30:45,285 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 02:30:45,286 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 02:30:45,290 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 02:30:45,292 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:30:45" (1/1) ... [2022-11-23 02:30:45,293 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51720bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:30:45, skipping insertion in model container [2022-11-23 02:30:45,293 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:30:45" (1/1) ... [2022-11-23 02:30:45,303 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 02:30:45,454 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 02:30:47,106 WARN L237 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_b75992de-6fa8-4abe-b1c7-b089cd5f8571/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--device_handler--scsi_dh_rdac.ko-entry_point.cil.out.i[164687,164700] [2022-11-23 02:30:47,161 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 02:30:47,188 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 02:30:47,531 WARN L237 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_b75992de-6fa8-4abe-b1c7-b089cd5f8571/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--device_handler--scsi_dh_rdac.ko-entry_point.cil.out.i[164687,164700] [2022-11-23 02:30:47,549 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 02:30:47,635 INFO L208 MainTranslator]: Completed translation [2022-11-23 02:30:47,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:30:47 WrapperNode [2022-11-23 02:30:47,638 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 02:30:47,640 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 02:30:47,640 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 02:30:47,641 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 02:30:47,651 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:30:47" (1/1) ... [2022-11-23 02:30:47,744 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:30:47" (1/1) ... [2022-11-23 02:30:47,967 INFO L138 Inliner]: procedures = 147, calls = 875, calls flagged for inlining = 60, calls inlined = 58, statements flattened = 2044 [2022-11-23 02:30:47,967 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 02:30:47,968 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 02:30:47,969 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 02:30:47,969 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 02:30:47,981 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:30:47" (1/1) ... [2022-11-23 02:30:47,981 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:30:47" (1/1) ... [2022-11-23 02:30:47,996 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:30:47" (1/1) ... [2022-11-23 02:30:47,997 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:30:47" (1/1) ... [2022-11-23 02:30:48,091 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:30:47" (1/1) ... [2022-11-23 02:30:48,102 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:30:47" (1/1) ... [2022-11-23 02:30:48,113 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:30:47" (1/1) ... [2022-11-23 02:30:48,124 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:30:47" (1/1) ... [2022-11-23 02:30:48,143 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 02:30:48,144 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 02:30:48,144 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 02:30:48,145 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 02:30:48,146 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:30:47" (1/1) ... [2022-11-23 02:30:48,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 02:30:48,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:30:48,189 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 02:30:48,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 02:30:48,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-23 02:30:48,255 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2022-11-23 02:30:48,255 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2022-11-23 02:30:48,255 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2022-11-23 02:30:48,255 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-23 02:30:48,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-23 02:30:48,256 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-23 02:30:48,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-23 02:30:48,258 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 02:30:48,258 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-23 02:30:48,258 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-23 02:30:48,258 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-23 02:30:48,259 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-23 02:30:48,259 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-23 02:30:48,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-23 02:30:48,259 INFO L130 BoogieDeclarations]: Found specification of procedure get_rdac_data [2022-11-23 02:30:48,259 INFO L138 BoogieDeclarations]: Found implementation of procedure get_rdac_data [2022-11-23 02:30:48,260 INFO L130 BoogieDeclarations]: Found specification of procedure blk_put_request [2022-11-23 02:30:48,260 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_put_request [2022-11-23 02:30:48,260 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_1 [2022-11-23 02:30:48,260 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_1 [2022-11-23 02:30:48,261 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-23 02:30:48,261 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-23 02:30:48,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 02:30:48,261 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-23 02:30:48,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-23 02:30:48,262 INFO L130 BoogieDeclarations]: Found specification of procedure send_mode_select [2022-11-23 02:30:48,262 INFO L138 BoogieDeclarations]: Found implementation of procedure send_mode_select [2022-11-23 02:30:48,262 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2022-11-23 02:30:48,263 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2022-11-23 02:30:48,263 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-23 02:30:48,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-23 02:30:48,264 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-23 02:30:48,265 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-23 02:30:48,265 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-23 02:30:48,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-23 02:30:48,267 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-23 02:30:48,267 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-23 02:30:48,267 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 02:30:48,267 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2022-11-23 02:30:48,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2022-11-23 02:30:48,268 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_unregister_device_handler [2022-11-23 02:30:48,268 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_unregister_device_handler [2022-11-23 02:30:48,268 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2022-11-23 02:30:48,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2022-11-23 02:30:48,269 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2022-11-23 02:30:48,269 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2022-11-23 02:30:48,270 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 02:30:48,270 INFO L130 BoogieDeclarations]: Found specification of procedure submit_inquiry [2022-11-23 02:30:48,270 INFO L138 BoogieDeclarations]: Found implementation of procedure submit_inquiry [2022-11-23 02:30:48,270 INFO L130 BoogieDeclarations]: Found specification of procedure rdac_bus_detach [2022-11-23 02:30:48,271 INFO L138 BoogieDeclarations]: Found implementation of procedure rdac_bus_detach [2022-11-23 02:30:48,271 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 02:30:48,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 02:30:48,272 INFO L130 BoogieDeclarations]: Found specification of procedure rdac_match [2022-11-23 02:30:48,272 INFO L138 BoogieDeclarations]: Found implementation of procedure rdac_match [2022-11-23 02:30:48,273 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-23 02:30:48,273 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-23 02:30:48,274 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-23 02:30:48,275 INFO L130 BoogieDeclarations]: Found specification of procedure blk_execute_rq [2022-11-23 02:30:48,275 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_execute_rq [2022-11-23 02:30:48,276 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-23 02:30:48,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-23 02:30:48,277 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 02:30:48,277 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2022-11-23 02:30:48,277 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_1 [2022-11-23 02:30:48,278 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_1 [2022-11-23 02:30:48,278 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-23 02:30:48,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-23 02:30:48,278 INFO L130 BoogieDeclarations]: Found specification of procedure check_ownership [2022-11-23 02:30:48,279 INFO L138 BoogieDeclarations]: Found implementation of procedure check_ownership [2022-11-23 02:30:48,279 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_all_1 [2022-11-23 02:30:48,279 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_all_1 [2022-11-23 02:30:48,279 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 02:30:48,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-23 02:30:48,280 INFO L130 BoogieDeclarations]: Found specification of procedure get_rdac_req [2022-11-23 02:30:48,280 INFO L138 BoogieDeclarations]: Found implementation of procedure get_rdac_req [2022-11-23 02:30:48,280 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-23 02:30:48,280 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-23 02:30:48,281 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2022-11-23 02:30:48,281 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2022-11-23 02:30:48,281 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2022-11-23 02:30:48,282 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2022-11-23 02:30:48,283 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-23 02:30:48,283 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-23 02:30:48,283 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-23 02:30:48,284 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-23 02:30:48,284 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-23 02:30:48,284 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-23 02:30:48,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 02:30:48,286 INFO L130 BoogieDeclarations]: Found specification of procedure flush_workqueue [2022-11-23 02:30:48,286 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_workqueue [2022-11-23 02:30:48,286 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-23 02:30:48,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 02:30:48,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 02:30:48,287 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-23 02:30:48,287 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-23 02:30:49,001 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 02:30:49,005 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 02:30:49,544 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-23 02:30:51,448 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 02:30:51,475 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 02:30:51,476 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-23 02:30:51,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:30:51 BoogieIcfgContainer [2022-11-23 02:30:51,482 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 02:30:51,486 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 02:30:51,487 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 02:30:51,492 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 02:30:51,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:30:45" (1/3) ... [2022-11-23 02:30:51,495 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@248f7ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:30:51, skipping insertion in model container [2022-11-23 02:30:51,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:30:47" (2/3) ... [2022-11-23 02:30:51,497 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@248f7ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:30:51, skipping insertion in model container [2022-11-23 02:30:51,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:30:51" (3/3) ... [2022-11-23 02:30:51,499 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--device_handler--scsi_dh_rdac.ko-entry_point.cil.out.i [2022-11-23 02:30:51,525 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 02:30:51,525 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 02:30:51,645 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 02:30:51,656 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;@78b3486e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 02:30:51,660 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 02:30:51,673 INFO L276 IsEmpty]: Start isEmpty. Operand has 589 states, 434 states have (on average 1.3940092165898617) internal successors, (605), 454 states have internal predecessors, (605), 115 states have call successors, (115), 39 states have call predecessors, (115), 38 states have return successors, (111), 110 states have call predecessors, (111), 111 states have call successors, (111) [2022-11-23 02:30:51,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-23 02:30:51,693 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:30:51,694 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:30:51,695 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:30:51,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:30:51,706 INFO L85 PathProgramCache]: Analyzing trace with hash -896153365, now seen corresponding path program 1 times [2022-11-23 02:30:51,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:30:51,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828247724] [2022-11-23 02:30:51,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:30:51,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:30:52,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:30:52,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:30:52,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:30:52,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:30:52,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:30:52,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:30:52,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:30:52,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 02:30:52,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:30:52,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:30:52,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:30:52,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:30:52,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:30:52,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-23 02:30:52,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:30:52,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:30:52,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:30:52,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:30:52,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:30:52,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-23 02:30:52,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:30:52,740 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-23 02:30:52,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:30:52,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828247724] [2022-11-23 02:30:52,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828247724] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:30:52,742 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:30:52,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 02:30:52,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710061551] [2022-11-23 02:30:52,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:30:52,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 02:30:52,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:30:52,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 02:30:52,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-23 02:30:52,806 INFO L87 Difference]: Start difference. First operand has 589 states, 434 states have (on average 1.3940092165898617) internal successors, (605), 454 states have internal predecessors, (605), 115 states have call successors, (115), 39 states have call predecessors, (115), 38 states have return successors, (111), 110 states have call predecessors, (111), 111 states have call successors, (111) Second operand has 6 states, 6 states have (on average 5.5) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-23 02:30:55,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:30:55,607 INFO L93 Difference]: Finished difference Result 1529 states and 2237 transitions. [2022-11-23 02:30:55,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 02:30:55,611 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 73 [2022-11-23 02:30:55,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:30:55,650 INFO L225 Difference]: With dead ends: 1529 [2022-11-23 02:30:55,650 INFO L226 Difference]: Without dead ends: 876 [2022-11-23 02:30:55,664 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-11-23 02:30:55,669 INFO L413 NwaCegarLoop]: 734 mSDtfsCounter, 1083 mSDsluCounter, 1034 mSDsCounter, 0 mSdLazyCounter, 660 mSolverCounterSat, 662 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1111 SdHoareTripleChecker+Valid, 1768 SdHoareTripleChecker+Invalid, 1322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 662 IncrementalHoareTripleChecker+Valid, 660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-23 02:30:55,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1111 Valid, 1768 Invalid, 1322 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [662 Valid, 660 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-23 02:30:55,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2022-11-23 02:30:55,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 776. [2022-11-23 02:30:55,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 776 states, 580 states have (on average 1.3706896551724137) internal successors, (795), 596 states have internal predecessors, (795), 139 states have call successors, (139), 57 states have call predecessors, (139), 56 states have return successors, (138), 137 states have call predecessors, (138), 138 states have call successors, (138) [2022-11-23 02:30:55,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 776 states to 776 states and 1072 transitions. [2022-11-23 02:30:55,854 INFO L78 Accepts]: Start accepts. Automaton has 776 states and 1072 transitions. Word has length 73 [2022-11-23 02:30:55,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:30:55,855 INFO L495 AbstractCegarLoop]: Abstraction has 776 states and 1072 transitions. [2022-11-23 02:30:55,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-23 02:30:55,856 INFO L276 IsEmpty]: Start isEmpty. Operand 776 states and 1072 transitions. [2022-11-23 02:30:55,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-11-23 02:30:55,862 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:30:55,863 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-23 02:30:55,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 02:30:55,864 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:30:55,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:30:55,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1989587294, now seen corresponding path program 1 times [2022-11-23 02:30:55,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:30:55,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284770413] [2022-11-23 02:30:55,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:30:55,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:30:56,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:30:56,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:30:56,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:30:56,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:30:56,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:30:56,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:30:56,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:30:56,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 02:30:56,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:30:56,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:30:56,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:30:56,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:30:56,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:30:56,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-23 02:30:56,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:30:56,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:30:56,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:30:56,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:30:56,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:30:56,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-23 02:30:56,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:30:56,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-23 02:30:56,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:30:56,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:30:56,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:30:56,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:30:56,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:30:56,621 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-11-23 02:30:56,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:30:56,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284770413] [2022-11-23 02:30:56,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284770413] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:30:56,622 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:30:56,622 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-23 02:30:56,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384638668] [2022-11-23 02:30:56,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:30:56,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-23 02:30:56,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:30:56,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-23 02:30:56,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-23 02:30:56,628 INFO L87 Difference]: Start difference. First operand 776 states and 1072 transitions. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 5 states have internal predecessors, (51), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-23 02:31:00,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:31:00,730 INFO L93 Difference]: Finished difference Result 2203 states and 3226 transitions. [2022-11-23 02:31:00,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 02:31:00,732 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 5 states have internal predecessors, (51), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 106 [2022-11-23 02:31:00,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:31:00,745 INFO L225 Difference]: With dead ends: 2203 [2022-11-23 02:31:00,745 INFO L226 Difference]: Without dead ends: 1450 [2022-11-23 02:31:00,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-11-23 02:31:00,750 INFO L413 NwaCegarLoop]: 1082 mSDtfsCounter, 1438 mSDsluCounter, 4315 mSDsCounter, 0 mSdLazyCounter, 1820 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1506 SdHoareTripleChecker+Valid, 5397 SdHoareTripleChecker+Invalid, 2368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1820 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-23 02:31:00,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1506 Valid, 5397 Invalid, 2368 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [548 Valid, 1820 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-23 02:31:00,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1450 states. [2022-11-23 02:31:00,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1450 to 779. [2022-11-23 02:31:00,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 779 states, 583 states have (on average 1.3687821612349915) internal successors, (798), 599 states have internal predecessors, (798), 139 states have call successors, (139), 57 states have call predecessors, (139), 56 states have return successors, (138), 137 states have call predecessors, (138), 138 states have call successors, (138) [2022-11-23 02:31:00,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 779 states to 779 states and 1075 transitions. [2022-11-23 02:31:00,846 INFO L78 Accepts]: Start accepts. Automaton has 779 states and 1075 transitions. Word has length 106 [2022-11-23 02:31:00,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:31:00,849 INFO L495 AbstractCegarLoop]: Abstraction has 779 states and 1075 transitions. [2022-11-23 02:31:00,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 5 states have internal predecessors, (51), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-23 02:31:00,849 INFO L276 IsEmpty]: Start isEmpty. Operand 779 states and 1075 transitions. [2022-11-23 02:31:00,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-11-23 02:31:00,861 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:31:00,862 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-23 02:31:00,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 02:31:00,863 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:31:00,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:31:00,863 INFO L85 PathProgramCache]: Analyzing trace with hash 61314649, now seen corresponding path program 1 times [2022-11-23 02:31:00,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:31:00,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748130208] [2022-11-23 02:31:00,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:31:00,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:31:00,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:01,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:31:01,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:01,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:01,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:01,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:31:01,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:01,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 02:31:01,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:01,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:01,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:01,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:31:01,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:01,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-23 02:31:01,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:01,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:01,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:01,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:31:01,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:01,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-23 02:31:01,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:01,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-23 02:31:01,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:01,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:01,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:01,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:31:01,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:01,418 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-11-23 02:31:01,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:31:01,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748130208] [2022-11-23 02:31:01,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748130208] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:31:01,429 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:31:01,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 02:31:01,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196218305] [2022-11-23 02:31:01,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:31:01,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 02:31:01,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:31:01,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 02:31:01,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-23 02:31:01,432 INFO L87 Difference]: Start difference. First operand 779 states and 1075 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (9), 6 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-23 02:31:03,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:31:03,775 INFO L93 Difference]: Finished difference Result 984 states and 1369 transitions. [2022-11-23 02:31:03,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 02:31:03,776 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (9), 6 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 107 [2022-11-23 02:31:03,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:31:03,786 INFO L225 Difference]: With dead ends: 984 [2022-11-23 02:31:03,786 INFO L226 Difference]: Without dead ends: 981 [2022-11-23 02:31:03,788 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-11-23 02:31:03,789 INFO L413 NwaCegarLoop]: 694 mSDtfsCounter, 1097 mSDsluCounter, 933 mSDsCounter, 0 mSdLazyCounter, 707 mSolverCounterSat, 446 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1142 SdHoareTripleChecker+Valid, 1627 SdHoareTripleChecker+Invalid, 1153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 446 IncrementalHoareTripleChecker+Valid, 707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-23 02:31:03,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1142 Valid, 1627 Invalid, 1153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [446 Valid, 707 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-23 02:31:03,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 981 states. [2022-11-23 02:31:03,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 981 to 867. [2022-11-23 02:31:03,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 867 states, 636 states have (on average 1.3632075471698113) internal successors, (867), 664 states have internal predecessors, (867), 159 states have call successors, (159), 72 states have call predecessors, (159), 71 states have return successors, (171), 152 states have call predecessors, (171), 158 states have call successors, (171) [2022-11-23 02:31:03,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 867 states to 867 states and 1197 transitions. [2022-11-23 02:31:03,870 INFO L78 Accepts]: Start accepts. Automaton has 867 states and 1197 transitions. Word has length 107 [2022-11-23 02:31:03,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:31:03,871 INFO L495 AbstractCegarLoop]: Abstraction has 867 states and 1197 transitions. [2022-11-23 02:31:03,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (9), 6 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-23 02:31:03,871 INFO L276 IsEmpty]: Start isEmpty. Operand 867 states and 1197 transitions. [2022-11-23 02:31:03,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2022-11-23 02:31:03,878 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:31:03,878 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2022-11-23 02:31:03,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 02:31:03,879 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:31:03,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:31:03,879 INFO L85 PathProgramCache]: Analyzing trace with hash -1667113681, now seen corresponding path program 1 times [2022-11-23 02:31:03,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:31:03,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460987990] [2022-11-23 02:31:03,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:31:03,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:31:03,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:04,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:31:04,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:04,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:04,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:04,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:31:04,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:04,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 02:31:04,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:04,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:04,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:04,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:31:04,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:04,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-23 02:31:04,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:04,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:04,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:04,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:31:04,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:04,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-23 02:31:04,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:04,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-23 02:31:04,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:04,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:04,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:04,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:31:04,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:04,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-23 02:31:04,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:04,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-23 02:31:04,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:04,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-23 02:31:04,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:04,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:04,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:04,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:04,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:04,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:31:04,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:04,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:04,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:04,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-11-23 02:31:04,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:04,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:04,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:04,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:04,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:04,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:31:04,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:04,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:04,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:04,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-11-23 02:31:04,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:04,764 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2022-11-23 02:31:04,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:31:04,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460987990] [2022-11-23 02:31:04,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460987990] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:31:04,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [166537588] [2022-11-23 02:31:04,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:31:04,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:31:04,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:31:04,771 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:31:04,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 02:31:05,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:05,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 2415 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-23 02:31:05,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:31:05,562 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-11-23 02:31:05,562 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:31:05,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [166537588] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:31:05,563 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 02:31:05,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [12] total 16 [2022-11-23 02:31:05,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433340401] [2022-11-23 02:31:05,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:31:05,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 02:31:05,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:31:05,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 02:31:05,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-11-23 02:31:05,565 INFO L87 Difference]: Start difference. First operand 867 states and 1197 transitions. Second operand has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 5 states have internal predecessors, (110), 3 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 4 states have call predecessors, (20), 3 states have call successors, (20) [2022-11-23 02:31:05,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:31:05,765 INFO L93 Difference]: Finished difference Result 1990 states and 2810 transitions. [2022-11-23 02:31:05,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 02:31:05,766 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 5 states have internal predecessors, (110), 3 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 4 states have call predecessors, (20), 3 states have call successors, (20) Word has length 196 [2022-11-23 02:31:05,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:31:05,775 INFO L225 Difference]: With dead ends: 1990 [2022-11-23 02:31:05,776 INFO L226 Difference]: Without dead ends: 1146 [2022-11-23 02:31:05,781 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2022-11-23 02:31:05,782 INFO L413 NwaCegarLoop]: 1058 mSDtfsCounter, 275 mSDsluCounter, 3976 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 5034 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 02:31:05,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [324 Valid, 5034 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 02:31:05,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1146 states. [2022-11-23 02:31:05,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1146 to 872. [2022-11-23 02:31:05,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 872 states, 640 states have (on average 1.3609375) internal successors, (871), 667 states have internal predecessors, (871), 159 states have call successors, (159), 72 states have call predecessors, (159), 72 states have return successors, (175), 153 states have call predecessors, (175), 158 states have call successors, (175) [2022-11-23 02:31:05,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 1205 transitions. [2022-11-23 02:31:05,856 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 1205 transitions. Word has length 196 [2022-11-23 02:31:05,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:31:05,857 INFO L495 AbstractCegarLoop]: Abstraction has 872 states and 1205 transitions. [2022-11-23 02:31:05,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 5 states have internal predecessors, (110), 3 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 4 states have call predecessors, (20), 3 states have call successors, (20) [2022-11-23 02:31:05,857 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 1205 transitions. [2022-11-23 02:31:05,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2022-11-23 02:31:05,864 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:31:05,864 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2022-11-23 02:31:05,875 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 02:31:06,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-11-23 02:31:06,074 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:31:06,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:31:06,075 INFO L85 PathProgramCache]: Analyzing trace with hash 300370094, now seen corresponding path program 1 times [2022-11-23 02:31:06,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:31:06,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151272683] [2022-11-23 02:31:06,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:31:06,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:31:06,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:06,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:31:06,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:06,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:06,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:06,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:31:06,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:06,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 02:31:06,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:06,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:06,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:06,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:31:06,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:06,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-23 02:31:06,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:06,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:06,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:06,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:31:06,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:06,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-23 02:31:06,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:06,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-23 02:31:06,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:06,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:06,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:06,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:31:06,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:06,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-23 02:31:06,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:06,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-23 02:31:06,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:06,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-23 02:31:06,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:06,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:06,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:06,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:06,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:06,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:31:06,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:06,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:06,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:06,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-11-23 02:31:06,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:06,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:06,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:06,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:06,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:06,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:31:06,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:06,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:06,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:06,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-11-23 02:31:06,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:06,621 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2022-11-23 02:31:06,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:31:06,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151272683] [2022-11-23 02:31:06,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151272683] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:31:06,622 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:31:06,622 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-23 02:31:06,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909415829] [2022-11-23 02:31:06,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:31:06,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-23 02:31:06,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:31:06,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-23 02:31:06,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-11-23 02:31:06,624 INFO L87 Difference]: Start difference. First operand 872 states and 1205 transitions. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (18), 8 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-23 02:31:12,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:31:12,009 INFO L93 Difference]: Finished difference Result 2819 states and 4140 transitions. [2022-11-23 02:31:12,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-23 02:31:12,014 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (18), 8 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 196 [2022-11-23 02:31:12,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:31:12,031 INFO L225 Difference]: With dead ends: 2819 [2022-11-23 02:31:12,031 INFO L226 Difference]: Without dead ends: 1970 [2022-11-23 02:31:12,036 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2022-11-23 02:31:12,039 INFO L413 NwaCegarLoop]: 952 mSDtfsCounter, 2497 mSDsluCounter, 5076 mSDsCounter, 0 mSdLazyCounter, 2767 mSolverCounterSat, 814 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2562 SdHoareTripleChecker+Valid, 6028 SdHoareTripleChecker+Invalid, 3581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 814 IncrementalHoareTripleChecker+Valid, 2767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-23 02:31:12,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2562 Valid, 6028 Invalid, 3581 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [814 Valid, 2767 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-11-23 02:31:12,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1970 states. [2022-11-23 02:31:12,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1970 to 875. [2022-11-23 02:31:12,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 875 states, 643 states have (on average 1.359253499222395) internal successors, (874), 670 states have internal predecessors, (874), 159 states have call successors, (159), 72 states have call predecessors, (159), 72 states have return successors, (175), 153 states have call predecessors, (175), 158 states have call successors, (175) [2022-11-23 02:31:12,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 875 states to 875 states and 1208 transitions. [2022-11-23 02:31:12,131 INFO L78 Accepts]: Start accepts. Automaton has 875 states and 1208 transitions. Word has length 196 [2022-11-23 02:31:12,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:31:12,133 INFO L495 AbstractCegarLoop]: Abstraction has 875 states and 1208 transitions. [2022-11-23 02:31:12,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (18), 8 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-23 02:31:12,133 INFO L276 IsEmpty]: Start isEmpty. Operand 875 states and 1208 transitions. [2022-11-23 02:31:12,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2022-11-23 02:31:12,140 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:31:12,141 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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, 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] [2022-11-23 02:31:12,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 02:31:12,141 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:31:12,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:31:12,142 INFO L85 PathProgramCache]: Analyzing trace with hash 733624767, now seen corresponding path program 1 times [2022-11-23 02:31:12,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:31:12,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701999558] [2022-11-23 02:31:12,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:31:12,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:31:12,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:12,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:31:12,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:12,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:12,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:12,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:31:12,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:12,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 02:31:12,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:12,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:12,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:12,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:31:12,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:12,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-23 02:31:12,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:12,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:12,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:12,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:31:12,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:12,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-23 02:31:12,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:12,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-23 02:31:12,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:12,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:12,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:12,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:31:12,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:12,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-23 02:31:12,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:12,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-23 02:31:12,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:12,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-23 02:31:12,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:13,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:13,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:13,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:13,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:13,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:31:13,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:13,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:13,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:13,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-23 02:31:13,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:13,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-23 02:31:13,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:13,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-23 02:31:13,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:13,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-11-23 02:31:13,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:13,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-11-23 02:31:13,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:13,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-11-23 02:31:13,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:13,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:13,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:13,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:13,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:13,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:31:13,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:13,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:13,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:13,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-11-23 02:31:13,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:13,226 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2022-11-23 02:31:13,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:31:13,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701999558] [2022-11-23 02:31:13,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701999558] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:31:13,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [483286161] [2022-11-23 02:31:13,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:31:13,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:31:13,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:31:13,229 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:31:13,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 02:31:14,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:14,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 2796 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 02:31:14,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:31:14,307 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-11-23 02:31:14,307 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:31:14,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [483286161] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:31:14,308 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 02:31:14,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [12] total 13 [2022-11-23 02:31:14,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279380318] [2022-11-23 02:31:14,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:31:14,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:31:14,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:31:14,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:31:14,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-11-23 02:31:14,311 INFO L87 Difference]: Start difference. First operand 875 states and 1208 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-23 02:31:14,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:31:14,404 INFO L93 Difference]: Finished difference Result 1728 states and 2391 transitions. [2022-11-23 02:31:14,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:31:14,405 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 233 [2022-11-23 02:31:14,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:31:14,412 INFO L225 Difference]: With dead ends: 1728 [2022-11-23 02:31:14,412 INFO L226 Difference]: Without dead ends: 876 [2022-11-23 02:31:14,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 289 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-11-23 02:31:14,421 INFO L413 NwaCegarLoop]: 802 mSDtfsCounter, 0 mSDsluCounter, 797 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1599 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 02:31:14,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1599 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 02:31:14,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2022-11-23 02:31:14,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 876. [2022-11-23 02:31:14,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 876 states, 644 states have (on average 1.358695652173913) internal successors, (875), 671 states have internal predecessors, (875), 159 states have call successors, (159), 72 states have call predecessors, (159), 72 states have return successors, (175), 153 states have call predecessors, (175), 158 states have call successors, (175) [2022-11-23 02:31:14,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 1209 transitions. [2022-11-23 02:31:14,494 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 1209 transitions. Word has length 233 [2022-11-23 02:31:14,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:31:14,495 INFO L495 AbstractCegarLoop]: Abstraction has 876 states and 1209 transitions. [2022-11-23 02:31:14,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-23 02:31:14,495 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 1209 transitions. [2022-11-23 02:31:14,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2022-11-23 02:31:14,505 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:31:14,505 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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, 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] [2022-11-23 02:31:14,523 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 02:31:14,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:31:14,718 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:31:14,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:31:14,719 INFO L85 PathProgramCache]: Analyzing trace with hash -952555071, now seen corresponding path program 1 times [2022-11-23 02:31:14,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:31:14,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872815261] [2022-11-23 02:31:14,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:31:14,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:31:14,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:15,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:31:15,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:15,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:15,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:15,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:31:15,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:15,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 02:31:15,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:15,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:15,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:15,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:31:15,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:15,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-23 02:31:15,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:15,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:15,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:15,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:31:15,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:15,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-23 02:31:15,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:15,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-23 02:31:15,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:15,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:15,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:15,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:31:15,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:15,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-23 02:31:15,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:15,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-23 02:31:15,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:15,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-23 02:31:15,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:15,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:15,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:15,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:15,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:15,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:31:15,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:15,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:15,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:15,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-23 02:31:15,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:15,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-23 02:31:15,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:15,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-23 02:31:15,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:15,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-11-23 02:31:15,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:15,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-11-23 02:31:15,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:15,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-11-23 02:31:15,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:15,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:15,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:15,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:15,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:15,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:31:15,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:15,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:15,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:15,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-11-23 02:31:15,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:15,671 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2022-11-23 02:31:15,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:31:15,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872815261] [2022-11-23 02:31:15,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872815261] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:31:15,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1509892345] [2022-11-23 02:31:15,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:31:15,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:31:15,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:31:15,674 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:31:15,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 02:31:16,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:16,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 2799 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 02:31:16,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:31:16,696 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-11-23 02:31:16,696 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:31:16,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1509892345] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:31:16,696 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 02:31:16,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [12] total 13 [2022-11-23 02:31:16,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593873136] [2022-11-23 02:31:16,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:31:16,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:31:16,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:31:16,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:31:16,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-11-23 02:31:16,699 INFO L87 Difference]: Start difference. First operand 876 states and 1209 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-23 02:31:16,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:31:16,782 INFO L93 Difference]: Finished difference Result 1731 states and 2394 transitions. [2022-11-23 02:31:16,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:31:16,783 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 233 [2022-11-23 02:31:16,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:31:16,790 INFO L225 Difference]: With dead ends: 1731 [2022-11-23 02:31:16,790 INFO L226 Difference]: Without dead ends: 878 [2022-11-23 02:31:16,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 289 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-11-23 02:31:16,796 INFO L413 NwaCegarLoop]: 801 mSDtfsCounter, 1 mSDsluCounter, 798 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1599 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 02:31:16,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1599 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 02:31:16,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2022-11-23 02:31:16,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 877. [2022-11-23 02:31:16,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 877 states, 645 states have (on average 1.3581395348837209) internal successors, (876), 672 states have internal predecessors, (876), 159 states have call successors, (159), 72 states have call predecessors, (159), 72 states have return successors, (175), 153 states have call predecessors, (175), 158 states have call successors, (175) [2022-11-23 02:31:16,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 1210 transitions. [2022-11-23 02:31:16,866 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 1210 transitions. Word has length 233 [2022-11-23 02:31:16,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:31:16,866 INFO L495 AbstractCegarLoop]: Abstraction has 877 states and 1210 transitions. [2022-11-23 02:31:16,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-23 02:31:16,867 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 1210 transitions. [2022-11-23 02:31:16,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2022-11-23 02:31:16,875 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:31:16,875 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:31:16,893 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-23 02:31:17,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:31:17,088 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:31:17,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:31:17,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1731104667, now seen corresponding path program 1 times [2022-11-23 02:31:17,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:31:17,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454970064] [2022-11-23 02:31:17,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:31:17,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:31:17,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:17,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:31:17,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:17,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:17,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:17,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:31:17,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:17,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 02:31:17,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:17,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:17,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:17,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:31:17,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:17,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-23 02:31:17,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:17,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:17,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:17,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:31:17,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:17,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-23 02:31:17,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:17,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-23 02:31:17,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:17,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:17,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:17,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:31:17,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:17,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-23 02:31:17,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:17,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-23 02:31:17,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:17,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-23 02:31:17,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:17,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:17,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:17,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:17,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:17,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:31:17,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:18,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:18,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:18,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-23 02:31:18,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:18,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-23 02:31:18,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:18,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-23 02:31:18,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:18,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-11-23 02:31:18,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:18,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-11-23 02:31:18,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:18,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-11-23 02:31:18,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:18,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:18,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:18,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:18,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:18,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:31:18,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:18,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:18,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:18,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-11-23 02:31:18,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:18,110 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-11-23 02:31:18,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:31:18,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454970064] [2022-11-23 02:31:18,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454970064] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:31:18,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2113078529] [2022-11-23 02:31:18,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:31:18,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:31:18,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:31:18,119 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:31:18,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 02:31:19,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:19,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 2814 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 02:31:19,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:31:19,202 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-11-23 02:31:19,202 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:31:19,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2113078529] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:31:19,203 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 02:31:19,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 14 [2022-11-23 02:31:19,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521927840] [2022-11-23 02:31:19,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:31:19,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 02:31:19,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:31:19,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 02:31:19,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-11-23 02:31:19,206 INFO L87 Difference]: Start difference. First operand 877 states and 1210 transitions. Second operand has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-23 02:31:19,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:31:19,326 INFO L93 Difference]: Finished difference Result 1734 states and 2397 transitions. [2022-11-23 02:31:19,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 02:31:19,327 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 235 [2022-11-23 02:31:19,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:31:19,335 INFO L225 Difference]: With dead ends: 1734 [2022-11-23 02:31:19,335 INFO L226 Difference]: Without dead ends: 880 [2022-11-23 02:31:19,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2022-11-23 02:31:19,342 INFO L413 NwaCegarLoop]: 800 mSDtfsCounter, 3 mSDsluCounter, 1593 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2393 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 02:31:19,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2393 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 02:31:19,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 880 states. [2022-11-23 02:31:19,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 880 to 879. [2022-11-23 02:31:19,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 879 states, 647 states have (on average 1.357032457496136) internal successors, (878), 674 states have internal predecessors, (878), 159 states have call successors, (159), 72 states have call predecessors, (159), 72 states have return successors, (175), 153 states have call predecessors, (175), 158 states have call successors, (175) [2022-11-23 02:31:19,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 879 states to 879 states and 1212 transitions. [2022-11-23 02:31:19,415 INFO L78 Accepts]: Start accepts. Automaton has 879 states and 1212 transitions. Word has length 235 [2022-11-23 02:31:19,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:31:19,416 INFO L495 AbstractCegarLoop]: Abstraction has 879 states and 1212 transitions. [2022-11-23 02:31:19,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-23 02:31:19,417 INFO L276 IsEmpty]: Start isEmpty. Operand 879 states and 1212 transitions. [2022-11-23 02:31:19,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2022-11-23 02:31:19,424 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:31:19,425 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:31:19,444 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-23 02:31:19,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:31:19,638 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:31:19,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:31:19,638 INFO L85 PathProgramCache]: Analyzing trace with hash 2071236455, now seen corresponding path program 1 times [2022-11-23 02:31:19,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:31:19,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625862686] [2022-11-23 02:31:19,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:31:19,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:31:19,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:20,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:31:20,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:20,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:20,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:20,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:31:20,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:20,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 02:31:20,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:20,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:20,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:20,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:31:20,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:20,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-23 02:31:20,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:20,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:20,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:20,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:31:20,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:20,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-23 02:31:20,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:20,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-23 02:31:20,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:20,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:20,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:20,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:31:20,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:20,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-23 02:31:20,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:20,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-23 02:31:20,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:20,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-23 02:31:20,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:20,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:20,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:20,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:20,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:20,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:31:20,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:20,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:20,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:20,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-23 02:31:20,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:20,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-23 02:31:20,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:20,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-23 02:31:20,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:20,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-11-23 02:31:20,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:20,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-11-23 02:31:20,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:20,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-11-23 02:31:20,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:20,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:20,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:20,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:20,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:20,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:31:20,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:20,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:20,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:20,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-11-23 02:31:20,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:20,672 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-11-23 02:31:20,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:31:20,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625862686] [2022-11-23 02:31:20,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625862686] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:31:20,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1028297497] [2022-11-23 02:31:20,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:31:20,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:31:20,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:31:20,675 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:31:20,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-23 02:31:21,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:21,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 2817 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 02:31:21,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:31:21,830 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-11-23 02:31:21,831 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:31:21,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1028297497] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:31:21,831 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 02:31:21,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 14 [2022-11-23 02:31:21,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883234355] [2022-11-23 02:31:21,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:31:21,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 02:31:21,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:31:21,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 02:31:21,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-11-23 02:31:21,834 INFO L87 Difference]: Start difference. First operand 879 states and 1212 transitions. Second operand has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-23 02:31:21,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:31:21,946 INFO L93 Difference]: Finished difference Result 1741 states and 2404 transitions. [2022-11-23 02:31:21,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 02:31:21,947 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 235 [2022-11-23 02:31:21,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:31:21,959 INFO L225 Difference]: With dead ends: 1741 [2022-11-23 02:31:21,959 INFO L226 Difference]: Without dead ends: 885 [2022-11-23 02:31:21,964 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2022-11-23 02:31:21,967 INFO L413 NwaCegarLoop]: 800 mSDtfsCounter, 9 mSDsluCounter, 1591 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 2391 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 02:31:21,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 2391 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 02:31:21,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2022-11-23 02:31:22,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 881. [2022-11-23 02:31:22,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 881 states, 649 states have (on average 1.3559322033898304) internal successors, (880), 676 states have internal predecessors, (880), 159 states have call successors, (159), 72 states have call predecessors, (159), 72 states have return successors, (175), 153 states have call predecessors, (175), 158 states have call successors, (175) [2022-11-23 02:31:22,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 881 states to 881 states and 1214 transitions. [2022-11-23 02:31:22,037 INFO L78 Accepts]: Start accepts. Automaton has 881 states and 1214 transitions. Word has length 235 [2022-11-23 02:31:22,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:31:22,038 INFO L495 AbstractCegarLoop]: Abstraction has 881 states and 1214 transitions. [2022-11-23 02:31:22,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-23 02:31:22,039 INFO L276 IsEmpty]: Start isEmpty. Operand 881 states and 1214 transitions. [2022-11-23 02:31:22,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2022-11-23 02:31:22,046 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:31:22,047 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:31:22,065 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-23 02:31:22,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-23 02:31:22,259 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:31:22,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:31:22,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1103885801, now seen corresponding path program 1 times [2022-11-23 02:31:22,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:31:22,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561567783] [2022-11-23 02:31:22,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:31:22,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:31:22,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:22,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:31:22,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:22,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:22,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:22,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:31:22,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:22,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 02:31:22,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:22,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:22,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:22,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:31:22,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:22,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-23 02:31:22,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:22,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:22,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:22,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:31:22,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:22,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-23 02:31:22,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:22,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-23 02:31:22,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:22,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:22,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:22,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:31:22,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:22,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-23 02:31:22,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:22,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-23 02:31:22,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:22,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-23 02:31:23,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:23,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:23,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:23,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:23,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:23,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:31:23,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:23,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:23,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:23,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-23 02:31:23,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:23,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-23 02:31:23,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:23,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-23 02:31:23,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:23,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-11-23 02:31:23,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:23,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-11-23 02:31:23,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:23,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-11-23 02:31:23,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:23,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:23,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:23,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:23,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:23,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:31:23,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:23,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:23,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:23,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-11-23 02:31:23,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:23,285 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-11-23 02:31:23,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:31:23,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561567783] [2022-11-23 02:31:23,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561567783] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:31:23,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109896140] [2022-11-23 02:31:23,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:31:23,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:31:23,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:31:23,288 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:31:23,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-23 02:31:24,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:24,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 2820 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-23 02:31:24,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:31:24,542 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-11-23 02:31:24,542 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:31:24,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1109896140] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:31:24,543 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 02:31:24,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [12] total 16 [2022-11-23 02:31:24,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482516010] [2022-11-23 02:31:24,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:31:24,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 02:31:24,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:31:24,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 02:31:24,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-11-23 02:31:24,548 INFO L87 Difference]: Start difference. First operand 881 states and 1214 transitions. Second operand has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 5 states have internal predecessors, (136), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 4 states have call predecessors, (25), 3 states have call successors, (25) [2022-11-23 02:31:24,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:31:24,778 INFO L93 Difference]: Finished difference Result 1945 states and 2729 transitions. [2022-11-23 02:31:24,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 02:31:24,779 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 5 states have internal predecessors, (136), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 4 states have call predecessors, (25), 3 states have call successors, (25) Word has length 235 [2022-11-23 02:31:24,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:31:24,789 INFO L225 Difference]: With dead ends: 1945 [2022-11-23 02:31:24,790 INFO L226 Difference]: Without dead ends: 1087 [2022-11-23 02:31:24,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 288 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2022-11-23 02:31:24,797 INFO L413 NwaCegarLoop]: 1040 mSDtfsCounter, 200 mSDsluCounter, 3924 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 4964 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 [2022-11-23 02:31:24,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 4964 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 02:31:24,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1087 states. [2022-11-23 02:31:24,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1087 to 882. [2022-11-23 02:31:24,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 882 states, 649 states have (on average 1.3559322033898304) internal successors, (880), 677 states have internal predecessors, (880), 160 states have call successors, (160), 72 states have call predecessors, (160), 72 states have return successors, (176), 154 states have call predecessors, (176), 159 states have call successors, (176) [2022-11-23 02:31:24,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 882 states to 882 states and 1216 transitions. [2022-11-23 02:31:24,899 INFO L78 Accepts]: Start accepts. Automaton has 882 states and 1216 transitions. Word has length 235 [2022-11-23 02:31:24,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:31:24,900 INFO L495 AbstractCegarLoop]: Abstraction has 882 states and 1216 transitions. [2022-11-23 02:31:24,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 5 states have internal predecessors, (136), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 4 states have call predecessors, (25), 3 states have call successors, (25) [2022-11-23 02:31:24,901 INFO L276 IsEmpty]: Start isEmpty. Operand 882 states and 1216 transitions. [2022-11-23 02:31:24,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2022-11-23 02:31:24,916 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:31:24,916 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:31:24,931 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-23 02:31:25,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-23 02:31:25,132 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:31:25,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:31:25,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1624323545, now seen corresponding path program 1 times [2022-11-23 02:31:25,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:31:25,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938108632] [2022-11-23 02:31:25,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:31:25,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:31:25,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:25,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:31:25,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:25,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:25,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:25,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:31:25,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:25,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 02:31:25,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:25,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:25,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:25,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:31:25,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:25,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-23 02:31:25,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:25,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:25,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:25,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:31:25,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:25,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-23 02:31:25,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:25,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-23 02:31:25,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:25,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:25,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:25,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:31:25,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:25,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-23 02:31:25,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:25,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-23 02:31:25,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:25,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-23 02:31:25,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:25,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:25,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:25,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:25,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:25,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:31:25,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:25,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:25,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:25,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-23 02:31:25,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:25,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-23 02:31:25,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:25,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-23 02:31:25,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:25,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-11-23 02:31:25,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:25,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-11-23 02:31:25,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:25,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-11-23 02:31:25,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:25,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:25,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:25,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:25,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:25,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:31:25,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:25,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:25,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:25,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-11-23 02:31:25,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:25,871 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2022-11-23 02:31:25,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:31:25,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938108632] [2022-11-23 02:31:25,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938108632] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:31:25,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [97495508] [2022-11-23 02:31:25,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:31:25,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:31:25,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:31:25,873 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:31:25,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-23 02:31:26,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:26,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 2817 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 02:31:26,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:31:26,847 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 42 proven. 1 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-11-23 02:31:26,848 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:31:27,036 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2022-11-23 02:31:27,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [97495508] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:31:27,036 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 02:31:27,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 4, 4] total 13 [2022-11-23 02:31:27,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477209904] [2022-11-23 02:31:27,037 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 02:31:27,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-23 02:31:27,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:31:27,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-23 02:31:27,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2022-11-23 02:31:27,039 INFO L87 Difference]: Start difference. First operand 882 states and 1216 transitions. Second operand has 13 states, 13 states have (on average 12.461538461538462) internal successors, (162), 7 states have internal predecessors, (162), 2 states have call successors, (47), 8 states have call predecessors, (47), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-23 02:31:29,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:31:29,500 INFO L93 Difference]: Finished difference Result 1880 states and 2618 transitions. [2022-11-23 02:31:29,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-23 02:31:29,501 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 12.461538461538462) internal successors, (162), 7 states have internal predecessors, (162), 2 states have call successors, (47), 8 states have call predecessors, (47), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 235 [2022-11-23 02:31:29,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:31:29,509 INFO L225 Difference]: With dead ends: 1880 [2022-11-23 02:31:29,509 INFO L226 Difference]: Without dead ends: 1021 [2022-11-23 02:31:29,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 540 GetRequests, 526 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2022-11-23 02:31:29,514 INFO L413 NwaCegarLoop]: 615 mSDtfsCounter, 845 mSDsluCounter, 1708 mSDsCounter, 0 mSdLazyCounter, 1039 mSolverCounterSat, 636 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 853 SdHoareTripleChecker+Valid, 2323 SdHoareTripleChecker+Invalid, 1675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 636 IncrementalHoareTripleChecker+Valid, 1039 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-23 02:31:29,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [853 Valid, 2323 Invalid, 1675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [636 Valid, 1039 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-23 02:31:29,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1021 states. [2022-11-23 02:31:29,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1021 to 888. [2022-11-23 02:31:29,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 888 states, 655 states have (on average 1.3526717557251908) internal successors, (886), 683 states have internal predecessors, (886), 160 states have call successors, (160), 72 states have call predecessors, (160), 72 states have return successors, (176), 154 states have call predecessors, (176), 159 states have call successors, (176) [2022-11-23 02:31:29,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 888 states to 888 states and 1222 transitions. [2022-11-23 02:31:29,581 INFO L78 Accepts]: Start accepts. Automaton has 888 states and 1222 transitions. Word has length 235 [2022-11-23 02:31:29,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:31:29,581 INFO L495 AbstractCegarLoop]: Abstraction has 888 states and 1222 transitions. [2022-11-23 02:31:29,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.461538461538462) internal successors, (162), 7 states have internal predecessors, (162), 2 states have call successors, (47), 8 states have call predecessors, (47), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-23 02:31:29,582 INFO L276 IsEmpty]: Start isEmpty. Operand 888 states and 1222 transitions. [2022-11-23 02:31:29,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2022-11-23 02:31:29,589 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:31:29,589 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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, 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] [2022-11-23 02:31:29,611 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-23 02:31:29,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-23 02:31:29,807 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:31:29,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:31:29,808 INFO L85 PathProgramCache]: Analyzing trace with hash -747098477, now seen corresponding path program 2 times [2022-11-23 02:31:29,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:31:29,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388180604] [2022-11-23 02:31:29,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:31:29,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:31:29,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:30,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:31:30,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:30,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:30,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:30,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:31:30,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:30,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 02:31:30,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:30,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:30,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:30,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:31:30,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:30,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-23 02:31:30,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:30,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:30,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:30,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:31:30,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:30,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-23 02:31:30,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:30,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-23 02:31:30,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:30,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:30,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:30,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:31:30,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:30,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-23 02:31:30,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:30,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-23 02:31:30,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:30,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-23 02:31:30,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:30,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:30,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:30,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:30,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:30,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:31:30,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:30,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:30,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:30,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-23 02:31:30,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:30,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-23 02:31:30,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:30,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-23 02:31:30,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:30,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-11-23 02:31:30,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:30,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-11-23 02:31:30,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:30,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-11-23 02:31:30,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:30,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:30,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:30,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:30,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:30,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:31:30,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:30,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:30,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:30,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-11-23 02:31:30,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:30,749 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2022-11-23 02:31:30,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:31:30,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388180604] [2022-11-23 02:31:30,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388180604] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:31:30,750 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:31:30,751 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-23 02:31:30,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867892464] [2022-11-23 02:31:30,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:31:30,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-23 02:31:30,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:31:30,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-23 02:31:30,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-11-23 02:31:30,754 INFO L87 Difference]: Start difference. First operand 888 states and 1222 transitions. Second operand has 12 states, 12 states have (on average 9.916666666666666) internal successors, (119), 5 states have internal predecessors, (119), 3 states have call successors, (24), 8 states have call predecessors, (24), 2 states have return successors, (22), 4 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-23 02:31:34,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:31:34,831 INFO L93 Difference]: Finished difference Result 2146 states and 3051 transitions. [2022-11-23 02:31:34,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-23 02:31:34,832 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.916666666666666) internal successors, (119), 5 states have internal predecessors, (119), 3 states have call successors, (24), 8 states have call predecessors, (24), 2 states have return successors, (22), 4 states have call predecessors, (22), 3 states have call successors, (22) Word has length 241 [2022-11-23 02:31:34,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:31:34,843 INFO L225 Difference]: With dead ends: 2146 [2022-11-23 02:31:34,843 INFO L226 Difference]: Without dead ends: 1281 [2022-11-23 02:31:34,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2022-11-23 02:31:34,849 INFO L413 NwaCegarLoop]: 900 mSDtfsCounter, 1244 mSDsluCounter, 4741 mSDsCounter, 0 mSdLazyCounter, 2079 mSolverCounterSat, 817 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1296 SdHoareTripleChecker+Valid, 5641 SdHoareTripleChecker+Invalid, 2896 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 817 IncrementalHoareTripleChecker+Valid, 2079 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-23 02:31:34,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1296 Valid, 5641 Invalid, 2896 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [817 Valid, 2079 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-11-23 02:31:34,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2022-11-23 02:31:34,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 893. [2022-11-23 02:31:34,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 893 states, 659 states have (on average 1.3505311077389985) internal successors, (890), 686 states have internal predecessors, (890), 160 states have call successors, (160), 72 states have call predecessors, (160), 73 states have return successors, (180), 155 states have call predecessors, (180), 159 states have call successors, (180) [2022-11-23 02:31:34,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 893 states to 893 states and 1230 transitions. [2022-11-23 02:31:34,937 INFO L78 Accepts]: Start accepts. Automaton has 893 states and 1230 transitions. Word has length 241 [2022-11-23 02:31:34,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:31:34,938 INFO L495 AbstractCegarLoop]: Abstraction has 893 states and 1230 transitions. [2022-11-23 02:31:34,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.916666666666666) internal successors, (119), 5 states have internal predecessors, (119), 3 states have call successors, (24), 8 states have call predecessors, (24), 2 states have return successors, (22), 4 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-23 02:31:34,938 INFO L276 IsEmpty]: Start isEmpty. Operand 893 states and 1230 transitions. [2022-11-23 02:31:34,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2022-11-23 02:31:34,947 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:31:34,947 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2022-11-23 02:31:34,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-23 02:31:34,948 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:31:34,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:31:34,948 INFO L85 PathProgramCache]: Analyzing trace with hash 2109961262, now seen corresponding path program 1 times [2022-11-23 02:31:34,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:31:34,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786418743] [2022-11-23 02:31:34,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:31:34,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:31:35,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:35,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:31:35,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:35,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:35,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:35,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:31:35,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:35,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 02:31:35,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:35,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:35,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:35,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:31:35,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:35,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-23 02:31:35,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:35,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:35,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:35,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:31:35,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:35,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-23 02:31:35,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:35,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-23 02:31:35,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:35,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:35,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:35,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:31:35,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:35,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-23 02:31:35,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:35,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-23 02:31:35,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:35,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-23 02:31:35,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:35,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:35,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:35,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:35,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:35,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:31:35,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:35,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:35,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:35,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-23 02:31:35,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:35,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-23 02:31:35,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:35,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-23 02:31:35,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:35,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-11-23 02:31:35,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:35,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-11-23 02:31:35,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:35,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-11-23 02:31:35,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:36,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:36,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:36,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:36,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:36,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:31:36,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:36,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:36,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:36,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-23 02:31:36,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:36,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-23 02:31:36,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:36,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-23 02:31:36,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:36,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-11-23 02:31:36,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:36,168 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2022-11-23 02:31:36,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:31:36,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786418743] [2022-11-23 02:31:36,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786418743] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:31:36,169 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:31:36,170 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-23 02:31:36,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923168659] [2022-11-23 02:31:36,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:31:36,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-23 02:31:36,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:31:36,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-23 02:31:36,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-11-23 02:31:36,173 INFO L87 Difference]: Start difference. First operand 893 states and 1230 transitions. Second operand has 12 states, 12 states have (on average 9.75) internal successors, (117), 5 states have internal predecessors, (117), 3 states have call successors, (24), 8 states have call predecessors, (24), 2 states have return successors, (22), 4 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-23 02:31:40,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:31:40,427 INFO L93 Difference]: Finished difference Result 2152 states and 3059 transitions. [2022-11-23 02:31:40,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-23 02:31:40,427 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.75) internal successors, (117), 5 states have internal predecessors, (117), 3 states have call successors, (24), 8 states have call predecessors, (24), 2 states have return successors, (22), 4 states have call predecessors, (22), 3 states have call successors, (22) Word has length 257 [2022-11-23 02:31:40,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:31:40,439 INFO L225 Difference]: With dead ends: 2152 [2022-11-23 02:31:40,439 INFO L226 Difference]: Without dead ends: 1282 [2022-11-23 02:31:40,444 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2022-11-23 02:31:40,445 INFO L413 NwaCegarLoop]: 930 mSDtfsCounter, 1037 mSDsluCounter, 5414 mSDsCounter, 0 mSdLazyCounter, 2515 mSolverCounterSat, 624 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1089 SdHoareTripleChecker+Valid, 6344 SdHoareTripleChecker+Invalid, 3139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 624 IncrementalHoareTripleChecker+Valid, 2515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-23 02:31:40,445 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1089 Valid, 6344 Invalid, 3139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [624 Valid, 2515 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-23 02:31:40,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1282 states. [2022-11-23 02:31:40,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1282 to 890. [2022-11-23 02:31:40,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 890 states, 657 states have (on average 1.3515981735159817) internal successors, (888), 684 states have internal predecessors, (888), 160 states have call successors, (160), 72 states have call predecessors, (160), 72 states have return successors, (176), 155 states have call predecessors, (176), 159 states have call successors, (176) [2022-11-23 02:31:40,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 890 states to 890 states and 1224 transitions. [2022-11-23 02:31:40,531 INFO L78 Accepts]: Start accepts. Automaton has 890 states and 1224 transitions. Word has length 257 [2022-11-23 02:31:40,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:31:40,531 INFO L495 AbstractCegarLoop]: Abstraction has 890 states and 1224 transitions. [2022-11-23 02:31:40,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.75) internal successors, (117), 5 states have internal predecessors, (117), 3 states have call successors, (24), 8 states have call predecessors, (24), 2 states have return successors, (22), 4 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-23 02:31:40,532 INFO L276 IsEmpty]: Start isEmpty. Operand 890 states and 1224 transitions. [2022-11-23 02:31:40,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2022-11-23 02:31:40,541 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:31:40,542 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2022-11-23 02:31:40,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-23 02:31:40,542 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:31:40,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:31:40,543 INFO L85 PathProgramCache]: Analyzing trace with hash -2044457424, now seen corresponding path program 1 times [2022-11-23 02:31:40,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:31:40,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177516076] [2022-11-23 02:31:40,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:31:40,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:31:40,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:41,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:31:41,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:41,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:41,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:41,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:31:41,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:41,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 02:31:41,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:41,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:41,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:41,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:31:41,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:41,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-23 02:31:41,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:41,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:41,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:41,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:31:41,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:41,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-23 02:31:41,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:41,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-23 02:31:41,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:41,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:41,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:41,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:31:41,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:41,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-23 02:31:41,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:41,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-23 02:31:41,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:41,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-23 02:31:41,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:41,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:41,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:41,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:41,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:41,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:31:41,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:41,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:41,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:41,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-23 02:31:41,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:41,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-23 02:31:41,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:41,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-23 02:31:41,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:41,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-11-23 02:31:41,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:41,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-11-23 02:31:41,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:41,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-11-23 02:31:41,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:41,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:41,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:41,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:41,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:41,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:31:41,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:41,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:41,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:41,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-23 02:31:41,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:41,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-23 02:31:41,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:41,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-23 02:31:41,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:41,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-11-23 02:31:41,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:41,812 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2022-11-23 02:31:41,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:31:41,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177516076] [2022-11-23 02:31:41,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177516076] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:31:41,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1338295567] [2022-11-23 02:31:41,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:31:41,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:31:41,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:31:41,815 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:31:41,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-23 02:31:43,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:43,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 3145 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-23 02:31:43,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:31:43,109 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 62 proven. 16 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-11-23 02:31:43,110 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:31:43,462 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2022-11-23 02:31:43,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1338295567] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:31:43,463 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 02:31:43,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 7, 7] total 19 [2022-11-23 02:31:43,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444411743] [2022-11-23 02:31:43,464 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 02:31:43,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-23 02:31:43,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:31:43,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-23 02:31:43,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2022-11-23 02:31:43,467 INFO L87 Difference]: Start difference. First operand 890 states and 1224 transitions. Second operand has 19 states, 19 states have (on average 9.473684210526315) internal successors, (180), 13 states have internal predecessors, (180), 2 states have call successors, (50), 8 states have call predecessors, (50), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-23 02:31:46,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:31:46,596 INFO L93 Difference]: Finished difference Result 1902 states and 2643 transitions. [2022-11-23 02:31:46,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-23 02:31:46,597 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 9.473684210526315) internal successors, (180), 13 states have internal predecessors, (180), 2 states have call successors, (50), 8 states have call predecessors, (50), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 257 [2022-11-23 02:31:46,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:31:46,605 INFO L225 Difference]: With dead ends: 1902 [2022-11-23 02:31:46,605 INFO L226 Difference]: Without dead ends: 1035 [2022-11-23 02:31:46,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 593 GetRequests, 573 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=116, Invalid=346, Unknown=0, NotChecked=0, Total=462 [2022-11-23 02:31:46,611 INFO L413 NwaCegarLoop]: 616 mSDtfsCounter, 700 mSDsluCounter, 2586 mSDsCounter, 0 mSdLazyCounter, 1552 mSolverCounterSat, 501 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 708 SdHoareTripleChecker+Valid, 3202 SdHoareTripleChecker+Invalid, 2053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 501 IncrementalHoareTripleChecker+Valid, 1552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-23 02:31:46,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [708 Valid, 3202 Invalid, 2053 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [501 Valid, 1552 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-23 02:31:46,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1035 states. [2022-11-23 02:31:46,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1035 to 902. [2022-11-23 02:31:46,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 902 states, 669 states have (on average 1.345291479820628) internal successors, (900), 696 states have internal predecessors, (900), 160 states have call successors, (160), 72 states have call predecessors, (160), 72 states have return successors, (176), 155 states have call predecessors, (176), 159 states have call successors, (176) [2022-11-23 02:31:46,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 902 states to 902 states and 1236 transitions. [2022-11-23 02:31:46,693 INFO L78 Accepts]: Start accepts. Automaton has 902 states and 1236 transitions. Word has length 257 [2022-11-23 02:31:46,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:31:46,694 INFO L495 AbstractCegarLoop]: Abstraction has 902 states and 1236 transitions. [2022-11-23 02:31:46,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 9.473684210526315) internal successors, (180), 13 states have internal predecessors, (180), 2 states have call successors, (50), 8 states have call predecessors, (50), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-23 02:31:46,694 INFO L276 IsEmpty]: Start isEmpty. Operand 902 states and 1236 transitions. [2022-11-23 02:31:46,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2022-11-23 02:31:46,701 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:31:46,701 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2022-11-23 02:31:46,722 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-23 02:31:46,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-23 02:31:46,917 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:31:46,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:31:46,918 INFO L85 PathProgramCache]: Analyzing trace with hash 439804936, now seen corresponding path program 2 times [2022-11-23 02:31:46,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:31:46,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500806822] [2022-11-23 02:31:46,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:31:46,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:31:47,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:48,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:31:48,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:48,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:48,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:48,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:31:48,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:48,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 02:31:48,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:48,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:48,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:48,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:31:48,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:48,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-23 02:31:48,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:48,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:48,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:48,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:31:48,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:48,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-23 02:31:48,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:48,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-23 02:31:48,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:48,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:48,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:48,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:31:48,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:48,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-23 02:31:48,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:48,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-23 02:31:48,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:48,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-23 02:31:48,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:48,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:48,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:48,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:48,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:48,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:31:48,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:48,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:48,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:48,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-23 02:31:48,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:48,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-23 02:31:48,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:48,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-23 02:31:48,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:48,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-11-23 02:31:48,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:48,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-11-23 02:31:48,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:48,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-11-23 02:31:48,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:48,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:48,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:48,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:48,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:48,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:31:48,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:48,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:48,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:48,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-23 02:31:48,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:48,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-23 02:31:48,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:48,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-23 02:31:48,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:48,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-11-23 02:31:48,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:48,554 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 2 proven. 100 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2022-11-23 02:31:48,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:31:48,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500806822] [2022-11-23 02:31:48,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500806822] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:31:48,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016661180] [2022-11-23 02:31:48,556 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 02:31:48,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:31:48,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:31:48,559 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:31:48,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-23 02:31:49,995 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 02:31:49,996 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 02:31:50,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 3235 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-23 02:31:50,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:31:50,092 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 62 proven. 100 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-11-23 02:31:50,092 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:31:50,632 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 2 proven. 100 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2022-11-23 02:31:50,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2016661180] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:31:50,633 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 02:31:50,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 13, 13] total 31 [2022-11-23 02:31:50,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362621932] [2022-11-23 02:31:50,634 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 02:31:50,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-23 02:31:50,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:31:50,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-23 02:31:50,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=319, Invalid=611, Unknown=0, NotChecked=0, Total=930 [2022-11-23 02:31:50,637 INFO L87 Difference]: Start difference. First operand 902 states and 1236 transitions. Second operand has 31 states, 31 states have (on average 6.580645161290323) internal successors, (204), 25 states have internal predecessors, (204), 2 states have call successors, (50), 8 states have call predecessors, (50), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-23 02:31:54,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:31:54,725 INFO L93 Difference]: Finished difference Result 1938 states and 2685 transitions. [2022-11-23 02:31:54,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-23 02:31:54,726 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 6.580645161290323) internal successors, (204), 25 states have internal predecessors, (204), 2 states have call successors, (50), 8 states have call predecessors, (50), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 269 [2022-11-23 02:31:54,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:31:54,734 INFO L225 Difference]: With dead ends: 1938 [2022-11-23 02:31:54,734 INFO L226 Difference]: Without dead ends: 1059 [2022-11-23 02:31:54,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 623 GetRequests, 591 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=338, Invalid=784, Unknown=0, NotChecked=0, Total=1122 [2022-11-23 02:31:54,740 INFO L413 NwaCegarLoop]: 614 mSDtfsCounter, 872 mSDsluCounter, 4977 mSDsCounter, 0 mSdLazyCounter, 2729 mSolverCounterSat, 644 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 880 SdHoareTripleChecker+Valid, 5591 SdHoareTripleChecker+Invalid, 3373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 644 IncrementalHoareTripleChecker+Valid, 2729 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-23 02:31:54,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [880 Valid, 5591 Invalid, 3373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [644 Valid, 2729 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-11-23 02:31:54,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1059 states. [2022-11-23 02:31:54,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1059 to 926. [2022-11-23 02:31:54,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 926 states, 693 states have (on average 1.3333333333333333) internal successors, (924), 720 states have internal predecessors, (924), 160 states have call successors, (160), 72 states have call predecessors, (160), 72 states have return successors, (176), 155 states have call predecessors, (176), 159 states have call successors, (176) [2022-11-23 02:31:54,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1260 transitions. [2022-11-23 02:31:54,826 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1260 transitions. Word has length 269 [2022-11-23 02:31:54,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:31:54,827 INFO L495 AbstractCegarLoop]: Abstraction has 926 states and 1260 transitions. [2022-11-23 02:31:54,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 6.580645161290323) internal successors, (204), 25 states have internal predecessors, (204), 2 states have call successors, (50), 8 states have call predecessors, (50), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-23 02:31:54,828 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1260 transitions. [2022-11-23 02:31:54,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2022-11-23 02:31:54,835 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:31:54,835 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2022-11-23 02:31:54,856 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-23 02:31:55,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-23 02:31:55,051 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:31:55,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:31:55,052 INFO L85 PathProgramCache]: Analyzing trace with hash 488932280, now seen corresponding path program 3 times [2022-11-23 02:31:55,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:31:55,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547045389] [2022-11-23 02:31:55,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:31:55,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:31:55,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:57,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:31:57,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:57,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:57,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:57,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:31:57,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:57,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 02:31:57,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:57,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:57,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:57,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:31:57,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:57,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-23 02:31:57,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:57,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:57,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:57,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:31:57,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:57,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-23 02:31:57,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:57,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-23 02:31:57,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:57,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:57,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:57,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:31:57,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:57,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-23 02:31:57,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:57,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-23 02:31:57,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:57,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-23 02:31:57,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:57,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:57,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:57,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:57,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:57,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:31:57,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:57,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:57,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:57,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-23 02:31:57,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:57,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-23 02:31:57,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:57,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-23 02:31:57,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:57,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-11-23 02:31:57,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:57,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-11-23 02:31:57,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:58,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-11-23 02:31:58,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:58,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:58,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:58,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:58,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:58,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:31:58,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:58,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:31:58,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:58,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-23 02:31:58,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:58,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-23 02:31:58,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:58,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-23 02:31:58,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:58,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-11-23 02:31:58,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:58,114 INFO L134 CoverageAnalysis]: Checked inductivity of 645 backedges. 2 proven. 484 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2022-11-23 02:31:58,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:31:58,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547045389] [2022-11-23 02:31:58,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547045389] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:31:58,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1129020740] [2022-11-23 02:31:58,116 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 02:31:58,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:31:58,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:31:58,134 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:31:58,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-23 02:31:59,575 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-23 02:31:59,575 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 02:31:59,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 2130 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-23 02:31:59,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:31:59,732 INFO L134 CoverageAnalysis]: Checked inductivity of 645 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2022-11-23 02:31:59,732 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:31:59,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1129020740] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:31:59,732 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 02:31:59,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [31] total 34 [2022-11-23 02:31:59,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204210739] [2022-11-23 02:31:59,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:31:59,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 02:31:59,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:31:59,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 02:31:59,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=797, Unknown=0, NotChecked=0, Total=1122 [2022-11-23 02:31:59,736 INFO L87 Difference]: Start difference. First operand 926 states and 1260 transitions. Second operand has 5 states, 5 states have (on average 26.0) internal successors, (130), 4 states have internal predecessors, (130), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-23 02:31:59,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:31:59,906 INFO L93 Difference]: Finished difference Result 1838 states and 2517 transitions. [2022-11-23 02:31:59,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 02:31:59,907 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 4 states have internal predecessors, (130), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) Word has length 293 [2022-11-23 02:31:59,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:31:59,915 INFO L225 Difference]: With dead ends: 1838 [2022-11-23 02:31:59,916 INFO L226 Difference]: Without dead ends: 935 [2022-11-23 02:31:59,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 353 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=325, Invalid=797, Unknown=0, NotChecked=0, Total=1122 [2022-11-23 02:31:59,921 INFO L413 NwaCegarLoop]: 803 mSDtfsCounter, 3 mSDsluCounter, 2399 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 3202 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 02:31:59,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 3202 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 02:31:59,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 935 states. [2022-11-23 02:31:59,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 935 to 930. [2022-11-23 02:32:00,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 930 states, 696 states have (on average 1.331896551724138) internal successors, (927), 723 states have internal predecessors, (927), 160 states have call successors, (160), 72 states have call predecessors, (160), 73 states have return successors, (178), 156 states have call predecessors, (178), 159 states have call successors, (178) [2022-11-23 02:32:00,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 930 states to 930 states and 1265 transitions. [2022-11-23 02:32:00,005 INFO L78 Accepts]: Start accepts. Automaton has 930 states and 1265 transitions. Word has length 293 [2022-11-23 02:32:00,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:32:00,006 INFO L495 AbstractCegarLoop]: Abstraction has 930 states and 1265 transitions. [2022-11-23 02:32:00,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 4 states have internal predecessors, (130), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-23 02:32:00,006 INFO L276 IsEmpty]: Start isEmpty. Operand 930 states and 1265 transitions. [2022-11-23 02:32:00,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2022-11-23 02:32:00,013 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:32:00,014 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2022-11-23 02:32:00,033 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-23 02:32:00,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-23 02:32:00,228 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:32:00,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:32:00,228 INFO L85 PathProgramCache]: Analyzing trace with hash -743488298, now seen corresponding path program 1 times [2022-11-23 02:32:00,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:32:00,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343303567] [2022-11-23 02:32:00,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:32:00,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:32:00,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:02,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:32:02,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:02,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:32:02,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:02,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:32:02,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:02,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 02:32:02,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:03,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:32:03,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:03,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:32:03,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:03,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-23 02:32:03,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:03,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:32:03,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:03,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:32:03,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:03,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-23 02:32:03,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:03,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-23 02:32:03,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:03,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:32:03,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:03,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:32:03,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:03,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-23 02:32:03,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:03,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-23 02:32:03,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:03,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-23 02:32:03,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:03,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:32:03,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:03,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:32:03,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:03,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:32:03,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:03,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:32:03,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:03,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-23 02:32:03,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:03,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-23 02:32:03,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:03,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-23 02:32:03,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:03,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-11-23 02:32:03,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:03,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-11-23 02:32:03,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:03,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-11-23 02:32:03,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:03,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:32:03,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:03,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:32:03,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:03,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:32:03,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:03,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:32:03,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:03,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-23 02:32:03,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:03,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-23 02:32:03,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:03,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-23 02:32:03,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:03,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-11-23 02:32:03,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:03,364 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 2 proven. 484 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2022-11-23 02:32:03,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:32:03,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343303567] [2022-11-23 02:32:03,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343303567] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:32:03,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2072815969] [2022-11-23 02:32:03,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:32:03,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:32:03,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:32:03,367 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:32:03,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-23 02:32:05,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:05,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 3503 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-23 02:32:05,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:32:05,202 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 65 proven. 484 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-11-23 02:32:05,202 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:32:06,129 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 2 proven. 484 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2022-11-23 02:32:06,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2072815969] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:32:06,129 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 02:32:06,129 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 25, 25] total 39 [2022-11-23 02:32:06,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689942105] [2022-11-23 02:32:06,130 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 02:32:06,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-11-23 02:32:06,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:32:06,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-11-23 02:32:06,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=547, Invalid=935, Unknown=0, NotChecked=0, Total=1482 [2022-11-23 02:32:06,134 INFO L87 Difference]: Start difference. First operand 930 states and 1265 transitions. Second operand has 39 states, 39 states have (on average 5.846153846153846) internal successors, (228), 33 states have internal predecessors, (228), 2 states have call successors, (50), 8 states have call predecessors, (50), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-23 02:32:10,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:32:10,193 INFO L93 Difference]: Finished difference Result 1982 states and 2724 transitions. [2022-11-23 02:32:10,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-23 02:32:10,194 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 5.846153846153846) internal successors, (228), 33 states have internal predecessors, (228), 2 states have call successors, (50), 8 states have call predecessors, (50), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 299 [2022-11-23 02:32:10,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:32:10,200 INFO L225 Difference]: With dead ends: 1982 [2022-11-23 02:32:10,201 INFO L226 Difference]: Without dead ends: 1075 [2022-11-23 02:32:10,205 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 695 GetRequests, 639 SyntacticMatches, 16 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 521 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=566, Invalid=1156, Unknown=0, NotChecked=0, Total=1722 [2022-11-23 02:32:10,205 INFO L413 NwaCegarLoop]: 614 mSDtfsCounter, 712 mSDsluCounter, 3872 mSDsCounter, 0 mSdLazyCounter, 2254 mSolverCounterSat, 498 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 720 SdHoareTripleChecker+Valid, 4486 SdHoareTripleChecker+Invalid, 2752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 498 IncrementalHoareTripleChecker+Valid, 2254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-23 02:32:10,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [720 Valid, 4486 Invalid, 2752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [498 Valid, 2254 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-23 02:32:10,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1075 states. [2022-11-23 02:32:10,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1075 to 946. [2022-11-23 02:32:10,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 946 states, 712 states have (on average 1.324438202247191) internal successors, (943), 739 states have internal predecessors, (943), 160 states have call successors, (160), 72 states have call predecessors, (160), 73 states have return successors, (178), 156 states have call predecessors, (178), 159 states have call successors, (178) [2022-11-23 02:32:10,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 946 states to 946 states and 1281 transitions. [2022-11-23 02:32:10,283 INFO L78 Accepts]: Start accepts. Automaton has 946 states and 1281 transitions. Word has length 299 [2022-11-23 02:32:10,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:32:10,284 INFO L495 AbstractCegarLoop]: Abstraction has 946 states and 1281 transitions. [2022-11-23 02:32:10,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 5.846153846153846) internal successors, (228), 33 states have internal predecessors, (228), 2 states have call successors, (50), 8 states have call predecessors, (50), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-23 02:32:10,285 INFO L276 IsEmpty]: Start isEmpty. Operand 946 states and 1281 transitions. [2022-11-23 02:32:10,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2022-11-23 02:32:10,291 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:32:10,291 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2022-11-23 02:32:10,311 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-11-23 02:32:10,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:32:10,515 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:32:10,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:32:10,515 INFO L85 PathProgramCache]: Analyzing trace with hash -314383434, now seen corresponding path program 2 times [2022-11-23 02:32:10,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:32:10,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766344240] [2022-11-23 02:32:10,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:32:10,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:32:10,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:12,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:32:12,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:12,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:32:12,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:12,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:32:12,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:12,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 02:32:12,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:12,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:32:12,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:12,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:32:12,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:12,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-23 02:32:12,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:12,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:32:12,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:12,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:32:12,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:12,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-23 02:32:12,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:12,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-23 02:32:12,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:12,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:32:12,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:12,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:32:12,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:12,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-23 02:32:12,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:12,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-23 02:32:12,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:12,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-23 02:32:13,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:13,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:32:13,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:13,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:32:13,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:13,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:32:13,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:13,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:32:13,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:13,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-23 02:32:13,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:13,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-23 02:32:13,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:13,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-23 02:32:13,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:13,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-11-23 02:32:13,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:13,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-11-23 02:32:13,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:13,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-11-23 02:32:13,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:13,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:32:13,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:13,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:32:13,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:13,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:32:13,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:13,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:32:13,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:13,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-23 02:32:13,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:13,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-23 02:32:13,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:13,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-23 02:32:13,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:13,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-11-23 02:32:13,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:13,175 INFO L134 CoverageAnalysis]: Checked inductivity of 1064 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 1058 trivial. 0 not checked. [2022-11-23 02:32:13,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:32:13,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766344240] [2022-11-23 02:32:13,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766344240] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:32:13,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1422103379] [2022-11-23 02:32:13,176 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 02:32:13,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:32:13,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:32:13,177 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:32:13,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-23 02:32:15,260 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 02:32:15,260 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 02:32:15,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 3623 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-23 02:32:15,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:32:15,446 INFO L134 CoverageAnalysis]: Checked inductivity of 1064 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 999 trivial. 0 not checked. [2022-11-23 02:32:15,446 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:32:15,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1422103379] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:32:15,446 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 02:32:15,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [13] total 17 [2022-11-23 02:32:15,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409225853] [2022-11-23 02:32:15,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:32:15,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 02:32:15,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:32:15,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 02:32:15,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2022-11-23 02:32:15,450 INFO L87 Difference]: Start difference. First operand 946 states and 1281 transitions. Second operand has 6 states, 5 states have (on average 29.8) internal successors, (149), 6 states have internal predecessors, (149), 5 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (28), 4 states have call predecessors, (28), 5 states have call successors, (28) [2022-11-23 02:32:16,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:32:16,031 INFO L93 Difference]: Finished difference Result 1890 states and 2571 transitions. [2022-11-23 02:32:16,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 02:32:16,032 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 29.8) internal successors, (149), 6 states have internal predecessors, (149), 5 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (28), 4 states have call predecessors, (28), 5 states have call successors, (28) Word has length 315 [2022-11-23 02:32:16,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:32:16,039 INFO L225 Difference]: With dead ends: 1890 [2022-11-23 02:32:16,040 INFO L226 Difference]: Without dead ends: 952 [2022-11-23 02:32:16,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 375 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2022-11-23 02:32:16,044 INFO L413 NwaCegarLoop]: 802 mSDtfsCounter, 26 mSDsluCounter, 3142 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 3944 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 02:32:16,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 3944 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 02:32:16,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 952 states. [2022-11-23 02:32:16,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 952 to 949. [2022-11-23 02:32:16,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 949 states, 714 states have (on average 1.3235294117647058) internal successors, (945), 742 states have internal predecessors, (945), 160 states have call successors, (160), 72 states have call predecessors, (160), 74 states have return successors, (179), 156 states have call predecessors, (179), 159 states have call successors, (179) [2022-11-23 02:32:16,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 949 states to 949 states and 1284 transitions. [2022-11-23 02:32:16,135 INFO L78 Accepts]: Start accepts. Automaton has 949 states and 1284 transitions. Word has length 315 [2022-11-23 02:32:16,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:32:16,136 INFO L495 AbstractCegarLoop]: Abstraction has 949 states and 1284 transitions. [2022-11-23 02:32:16,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 29.8) internal successors, (149), 6 states have internal predecessors, (149), 5 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (28), 4 states have call predecessors, (28), 5 states have call successors, (28) [2022-11-23 02:32:16,137 INFO L276 IsEmpty]: Start isEmpty. Operand 949 states and 1284 transitions. [2022-11-23 02:32:16,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2022-11-23 02:32:16,144 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:32:16,144 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2022-11-23 02:32:16,165 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-23 02:32:16,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-23 02:32:16,360 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:32:16,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:32:16,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1523289346, now seen corresponding path program 1 times [2022-11-23 02:32:16,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:32:16,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108053581] [2022-11-23 02:32:16,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:32:16,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:32:16,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:18,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:32:18,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:18,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:32:18,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:18,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:32:18,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:18,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 02:32:18,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:18,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:32:18,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:18,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:32:18,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:18,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-23 02:32:18,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:18,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:32:18,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:18,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:32:18,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:18,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-23 02:32:18,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:18,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-23 02:32:18,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:18,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:32:18,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:18,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:32:18,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:18,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-23 02:32:18,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:18,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-23 02:32:18,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:18,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-23 02:32:18,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:19,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:32:19,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:19,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:32:19,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:19,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:32:19,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:19,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:32:19,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:19,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-23 02:32:19,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:19,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-23 02:32:19,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:19,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-23 02:32:19,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:19,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-11-23 02:32:19,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:19,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-11-23 02:32:19,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:19,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-11-23 02:32:19,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:19,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:32:19,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:19,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:32:19,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:19,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:32:19,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:19,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:32:19,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:19,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-23 02:32:19,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:19,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-23 02:32:19,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:19,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-23 02:32:19,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:19,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2022-11-23 02:32:19,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:19,167 INFO L134 CoverageAnalysis]: Checked inductivity of 1066 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 1060 trivial. 0 not checked. [2022-11-23 02:32:19,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:32:19,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108053581] [2022-11-23 02:32:19,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108053581] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:32:19,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590036767] [2022-11-23 02:32:19,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:32:19,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:32:19,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:32:19,170 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:32:19,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-23 02:32:21,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:21,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 3701 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-23 02:32:21,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:32:21,953 INFO L134 CoverageAnalysis]: Checked inductivity of 1066 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 1044 trivial. 0 not checked. [2022-11-23 02:32:21,953 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:32:21,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1590036767] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:32:21,954 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 02:32:21,954 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [13] total 13 [2022-11-23 02:32:21,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587129273] [2022-11-23 02:32:21,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:32:21,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 02:32:21,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:32:21,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 02:32:21,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-11-23 02:32:21,956 INFO L87 Difference]: Start difference. First operand 949 states and 1284 transitions. Second operand has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 5 states have internal predecessors, (125), 2 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (21), 4 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-23 02:32:22,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:32:22,135 INFO L93 Difference]: Finished difference Result 2080 states and 2863 transitions. [2022-11-23 02:32:22,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 02:32:22,136 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 5 states have internal predecessors, (125), 2 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (21), 4 states have call predecessors, (21), 2 states have call successors, (21) Word has length 319 [2022-11-23 02:32:22,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:32:22,145 INFO L225 Difference]: With dead ends: 2080 [2022-11-23 02:32:22,145 INFO L226 Difference]: Without dead ends: 1154 [2022-11-23 02:32:22,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 383 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-11-23 02:32:22,151 INFO L413 NwaCegarLoop]: 959 mSDtfsCounter, 187 mSDsluCounter, 4638 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 5597 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 02:32:22,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 5597 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 02:32:22,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1154 states. [2022-11-23 02:32:22,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1154 to 956. [2022-11-23 02:32:22,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 956 states, 719 states have (on average 1.321279554937413) internal successors, (950), 747 states have internal predecessors, (950), 160 states have call successors, (160), 72 states have call predecessors, (160), 76 states have return successors, (183), 158 states have call predecessors, (183), 159 states have call successors, (183) [2022-11-23 02:32:22,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 956 states to 956 states and 1293 transitions. [2022-11-23 02:32:22,248 INFO L78 Accepts]: Start accepts. Automaton has 956 states and 1293 transitions. Word has length 319 [2022-11-23 02:32:22,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:32:22,248 INFO L495 AbstractCegarLoop]: Abstraction has 956 states and 1293 transitions. [2022-11-23 02:32:22,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 5 states have internal predecessors, (125), 2 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (21), 4 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-23 02:32:22,249 INFO L276 IsEmpty]: Start isEmpty. Operand 956 states and 1293 transitions. [2022-11-23 02:32:22,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2022-11-23 02:32:22,256 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:32:22,257 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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, 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] [2022-11-23 02:32:22,283 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-23 02:32:22,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:32:22,478 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:32:22,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:32:22,478 INFO L85 PathProgramCache]: Analyzing trace with hash -302173952, now seen corresponding path program 1 times [2022-11-23 02:32:22,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:32:22,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622119494] [2022-11-23 02:32:22,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:32:22,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:32:22,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:24,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:32:24,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:24,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:32:24,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:24,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:32:24,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:24,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 02:32:24,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:24,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:32:24,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:24,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:32:24,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:24,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-23 02:32:24,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:24,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:32:24,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:24,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:32:24,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:24,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-23 02:32:24,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:24,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-23 02:32:24,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:24,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:32:24,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:24,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:32:24,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:24,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-23 02:32:24,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:24,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-23 02:32:24,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:24,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:32:24,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:24,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-23 02:32:24,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:24,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:32:24,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:24,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-23 02:32:24,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:24,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-11-23 02:32:24,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:25,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:32:25,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:25,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:32:25,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:25,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:32:25,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:25,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:32:25,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:25,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-23 02:32:25,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:25,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-23 02:32:25,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:25,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-23 02:32:25,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:25,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-11-23 02:32:25,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:25,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-11-23 02:32:25,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:25,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-11-23 02:32:25,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:25,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:32:25,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:25,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:32:25,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:25,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:32:25,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:25,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:32:25,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:25,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-23 02:32:25,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:25,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-23 02:32:25,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:25,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-23 02:32:25,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:25,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-11-23 02:32:25,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:25,468 INFO L134 CoverageAnalysis]: Checked inductivity of 1118 backedges. 4 proven. 25 refuted. 0 times theorem prover too weak. 1089 trivial. 0 not checked. [2022-11-23 02:32:25,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:32:25,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622119494] [2022-11-23 02:32:25,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622119494] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:32:25,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2069375311] [2022-11-23 02:32:25,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:32:25,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:32:25,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:32:25,471 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:32:25,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-23 02:32:27,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:27,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 3768 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-23 02:32:27,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:32:27,925 INFO L134 CoverageAnalysis]: Checked inductivity of 1118 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 1071 trivial. 0 not checked. [2022-11-23 02:32:27,925 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:32:27,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2069375311] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:32:27,926 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 02:32:27,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [15] total 15 [2022-11-23 02:32:27,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007998512] [2022-11-23 02:32:27,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:32:27,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-23 02:32:27,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:32:27,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-23 02:32:27,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2022-11-23 02:32:27,929 INFO L87 Difference]: Start difference. First operand 956 states and 1293 transitions. Second operand has 9 states, 9 states have (on average 16.333333333333332) internal successors, (147), 7 states have internal predecessors, (147), 3 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (30), 5 states have call predecessors, (30), 3 states have call successors, (30) [2022-11-23 02:32:28,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:32:28,489 INFO L93 Difference]: Finished difference Result 1933 states and 2629 transitions. [2022-11-23 02:32:28,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-23 02:32:28,490 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 16.333333333333332) internal successors, (147), 7 states have internal predecessors, (147), 3 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (30), 5 states have call predecessors, (30), 3 states have call successors, (30) Word has length 339 [2022-11-23 02:32:28,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:32:28,497 INFO L225 Difference]: With dead ends: 1933 [2022-11-23 02:32:28,497 INFO L226 Difference]: Without dead ends: 1000 [2022-11-23 02:32:28,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 429 GetRequests, 414 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2022-11-23 02:32:28,502 INFO L413 NwaCegarLoop]: 798 mSDtfsCounter, 22 mSDsluCounter, 5555 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 6353 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 02:32:28,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 6353 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 02:32:28,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1000 states. [2022-11-23 02:32:28,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1000 to 966. [2022-11-23 02:32:28,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 966 states, 728 states have (on average 1.3214285714285714) internal successors, (962), 755 states have internal predecessors, (962), 161 states have call successors, (161), 72 states have call predecessors, (161), 76 states have return successors, (184), 160 states have call predecessors, (184), 160 states have call successors, (184) [2022-11-23 02:32:28,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 966 states to 966 states and 1307 transitions. [2022-11-23 02:32:28,585 INFO L78 Accepts]: Start accepts. Automaton has 966 states and 1307 transitions. Word has length 339 [2022-11-23 02:32:28,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:32:28,586 INFO L495 AbstractCegarLoop]: Abstraction has 966 states and 1307 transitions. [2022-11-23 02:32:28,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.333333333333332) internal successors, (147), 7 states have internal predecessors, (147), 3 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (30), 5 states have call predecessors, (30), 3 states have call successors, (30) [2022-11-23 02:32:28,587 INFO L276 IsEmpty]: Start isEmpty. Operand 966 states and 1307 transitions. [2022-11-23 02:32:28,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2022-11-23 02:32:28,594 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:32:28,595 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 10, 10, 10, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 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] [2022-11-23 02:32:28,620 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-23 02:32:28,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:32:28,811 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:32:28,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:32:28,811 INFO L85 PathProgramCache]: Analyzing trace with hash 975978884, now seen corresponding path program 1 times [2022-11-23 02:32:28,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:32:28,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668620104] [2022-11-23 02:32:28,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:32:28,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:32:37,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:38,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:32:38,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:38,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:32:38,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:38,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:32:38,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:38,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 02:32:38,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:38,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:32:38,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:38,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:32:38,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:38,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-23 02:32:38,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:38,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:32:38,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:38,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:32:38,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:38,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-23 02:32:38,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:39,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-23 02:32:39,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:39,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:32:39,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:39,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:32:39,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:39,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-23 02:32:39,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:39,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-23 02:32:39,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:39,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:32:39,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:39,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-23 02:32:39,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:39,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:32:39,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:39,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-23 02:32:39,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:39,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-11-23 02:32:39,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:39,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:32:39,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:39,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:32:39,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:39,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:32:39,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:39,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-23 02:32:39,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:39,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:32:39,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:39,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-23 02:32:39,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:39,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-23 02:32:39,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:39,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:32:39,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:39,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-23 02:32:39,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:39,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-23 02:32:39,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:39,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-23 02:32:39,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:39,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-11-23 02:32:39,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:39,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-11-23 02:32:39,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:39,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-11-23 02:32:39,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:39,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:32:39,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:39,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:32:39,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:39,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:32:39,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:39,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-23 02:32:39,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:39,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:32:39,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:39,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-23 02:32:39,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:39,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-23 02:32:39,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:39,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:32:39,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:39,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-23 02:32:39,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:39,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-23 02:32:39,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:39,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-23 02:32:39,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:39,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2022-11-23 02:32:39,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:39,297 INFO L134 CoverageAnalysis]: Checked inductivity of 1306 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 1295 trivial. 0 not checked. [2022-11-23 02:32:39,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:32:39,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668620104] [2022-11-23 02:32:39,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668620104] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:32:39,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [20475971] [2022-11-23 02:32:39,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:32:39,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:32:39,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:32:39,299 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:32:39,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-23 02:32:41,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:41,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 3902 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-23 02:32:41,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:32:41,628 INFO L134 CoverageAnalysis]: Checked inductivity of 1306 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 1180 trivial. 0 not checked. [2022-11-23 02:32:41,628 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:32:41,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [20475971] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:32:41,629 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 02:32:41,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 12 [2022-11-23 02:32:41,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911732540] [2022-11-23 02:32:41,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:32:41,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 02:32:41,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:32:41,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 02:32:41,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-11-23 02:32:41,631 INFO L87 Difference]: Start difference. First operand 966 states and 1307 transitions. Second operand has 5 states, 4 states have (on average 32.75) internal successors, (131), 5 states have internal predecessors, (131), 3 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 2 states have call predecessors, (26), 3 states have call successors, (26) [2022-11-23 02:32:41,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:32:41,767 INFO L93 Difference]: Finished difference Result 1918 states and 2651 transitions. [2022-11-23 02:32:41,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 02:32:41,768 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 32.75) internal successors, (131), 5 states have internal predecessors, (131), 3 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 2 states have call predecessors, (26), 3 states have call successors, (26) Word has length 379 [2022-11-23 02:32:41,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:32:41,774 INFO L225 Difference]: With dead ends: 1918 [2022-11-23 02:32:41,774 INFO L226 Difference]: Without dead ends: 972 [2022-11-23 02:32:41,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 475 GetRequests, 463 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-11-23 02:32:41,780 INFO L413 NwaCegarLoop]: 799 mSDtfsCounter, 296 mSDsluCounter, 2044 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 2843 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 02:32:41,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [345 Valid, 2843 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 02:32:41,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 972 states. [2022-11-23 02:32:41,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 972 to 972. [2022-11-23 02:32:41,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 972 states, 732 states have (on average 1.3224043715846994) internal successors, (968), 761 states have internal predecessors, (968), 161 states have call successors, (161), 72 states have call predecessors, (161), 78 states have return successors, (188), 160 states have call predecessors, (188), 160 states have call successors, (188) [2022-11-23 02:32:41,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 1317 transitions. [2022-11-23 02:32:41,864 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 1317 transitions. Word has length 379 [2022-11-23 02:32:41,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:32:41,864 INFO L495 AbstractCegarLoop]: Abstraction has 972 states and 1317 transitions. [2022-11-23 02:32:41,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 32.75) internal successors, (131), 5 states have internal predecessors, (131), 3 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 2 states have call predecessors, (26), 3 states have call successors, (26) [2022-11-23 02:32:41,865 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 1317 transitions. [2022-11-23 02:32:41,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2022-11-23 02:32:41,871 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:32:41,872 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 10, 10, 10, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 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] [2022-11-23 02:32:41,892 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-23 02:32:42,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:32:42,085 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:32:42,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:32:42,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1976659206, now seen corresponding path program 1 times [2022-11-23 02:32:42,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:32:42,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326538240] [2022-11-23 02:32:42,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:32:42,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:32:52,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:53,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:32:53,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:53,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:32:53,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:53,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:32:53,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:53,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 02:32:53,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:53,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:32:53,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:53,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:32:53,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:53,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-23 02:32:53,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:53,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:32:53,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:53,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:32:53,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:53,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-23 02:32:53,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:53,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-23 02:32:53,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:53,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:32:53,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:53,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:32:53,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:53,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-23 02:32:53,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:53,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-23 02:32:53,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:53,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:32:53,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:53,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-23 02:32:53,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:53,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:32:53,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:53,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-23 02:32:53,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:53,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-11-23 02:32:53,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:53,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:32:53,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:53,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:32:53,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:53,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:32:53,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:53,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-23 02:32:53,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:53,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:32:53,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:53,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-23 02:32:53,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:53,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-23 02:32:53,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:53,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:32:53,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:53,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-23 02:32:53,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:53,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-23 02:32:53,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:53,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-23 02:32:53,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:54,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-11-23 02:32:54,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:54,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-11-23 02:32:54,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:54,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-11-23 02:32:54,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:54,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:32:54,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:54,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:32:54,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:54,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:32:54,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:54,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-23 02:32:54,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:54,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:32:54,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:54,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-23 02:32:54,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:54,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-23 02:32:54,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:54,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:32:54,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:54,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-23 02:32:54,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:54,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-23 02:32:54,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:54,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-23 02:32:54,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:54,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2022-11-23 02:32:54,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:54,135 INFO L134 CoverageAnalysis]: Checked inductivity of 1328 backedges. 2 proven. 19 refuted. 0 times theorem prover too weak. 1307 trivial. 0 not checked. [2022-11-23 02:32:54,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:32:54,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326538240] [2022-11-23 02:32:54,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326538240] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:32:54,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [108567472] [2022-11-23 02:32:54,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:32:54,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:32:54,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:32:54,139 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:32:54,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-23 02:32:57,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:57,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 3962 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-23 02:32:57,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:32:57,364 INFO L134 CoverageAnalysis]: Checked inductivity of 1328 backedges. 135 proven. 1 refuted. 0 times theorem prover too weak. 1192 trivial. 0 not checked. [2022-11-23 02:32:57,365 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:32:57,819 INFO L134 CoverageAnalysis]: Checked inductivity of 1328 backedges. 2 proven. 19 refuted. 0 times theorem prover too weak. 1307 trivial. 0 not checked. [2022-11-23 02:32:57,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [108567472] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:32:57,820 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 02:32:57,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6, 6] total 17 [2022-11-23 02:32:57,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420870429] [2022-11-23 02:32:57,821 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 02:32:57,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-23 02:32:57,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:32:57,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-23 02:32:57,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2022-11-23 02:32:57,823 INFO L87 Difference]: Start difference. First operand 972 states and 1317 transitions. Second operand has 17 states, 15 states have (on average 13.333333333333334) internal successors, (200), 11 states have internal predecessors, (200), 4 states have call successors, (63), 8 states have call predecessors, (63), 4 states have return successors, (46), 2 states have call predecessors, (46), 4 states have call successors, (46) [2022-11-23 02:33:02,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:33:02,403 INFO L93 Difference]: Finished difference Result 2031 states and 2816 transitions. [2022-11-23 02:33:02,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-23 02:33:02,406 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 13.333333333333334) internal successors, (200), 11 states have internal predecessors, (200), 4 states have call successors, (63), 8 states have call predecessors, (63), 4 states have return successors, (46), 2 states have call predecessors, (46), 4 states have call successors, (46) Word has length 383 [2022-11-23 02:33:02,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:33:02,415 INFO L225 Difference]: With dead ends: 2031 [2022-11-23 02:33:02,415 INFO L226 Difference]: Without dead ends: 1079 [2022-11-23 02:33:02,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 871 GetRequests, 847 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=113, Invalid=439, Unknown=0, NotChecked=0, Total=552 [2022-11-23 02:33:02,421 INFO L413 NwaCegarLoop]: 615 mSDtfsCounter, 1273 mSDsluCounter, 5560 mSDsCounter, 0 mSdLazyCounter, 3167 mSolverCounterSat, 542 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1342 SdHoareTripleChecker+Valid, 6175 SdHoareTripleChecker+Invalid, 3709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 542 IncrementalHoareTripleChecker+Valid, 3167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-23 02:33:02,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1342 Valid, 6175 Invalid, 3709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [542 Valid, 3167 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-11-23 02:33:02,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1079 states. [2022-11-23 02:33:02,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1079 to 974. [2022-11-23 02:33:02,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 974 states, 734 states have (on average 1.32425068119891) internal successors, (972), 763 states have internal predecessors, (972), 161 states have call successors, (161), 72 states have call predecessors, (161), 78 states have return successors, (188), 160 states have call predecessors, (188), 160 states have call successors, (188) [2022-11-23 02:33:02,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 974 states to 974 states and 1321 transitions. [2022-11-23 02:33:02,515 INFO L78 Accepts]: Start accepts. Automaton has 974 states and 1321 transitions. Word has length 383 [2022-11-23 02:33:02,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:33:02,515 INFO L495 AbstractCegarLoop]: Abstraction has 974 states and 1321 transitions. [2022-11-23 02:33:02,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 13.333333333333334) internal successors, (200), 11 states have internal predecessors, (200), 4 states have call successors, (63), 8 states have call predecessors, (63), 4 states have return successors, (46), 2 states have call predecessors, (46), 4 states have call successors, (46) [2022-11-23 02:33:02,516 INFO L276 IsEmpty]: Start isEmpty. Operand 974 states and 1321 transitions. [2022-11-23 02:33:02,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2022-11-23 02:33:02,521 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:33:02,522 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 10, 10, 10, 8, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 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] [2022-11-23 02:33:02,548 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-23 02:33:02,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:33:02,736 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:33:02,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:33:02,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1439462076, now seen corresponding path program 2 times [2022-11-23 02:33:02,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:33:02,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303446009] [2022-11-23 02:33:02,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:33:02,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:33:04,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:33:04,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:33:04,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:33:04,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:33:04,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:33:04,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:33:04,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:33:04,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 02:33:04,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:33:04,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:33:04,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:33:04,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:33:04,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:33:04,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-23 02:33:04,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:33:04,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:33:04,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:33:04,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:33:04,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:33:04,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-23 02:33:04,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:33:05,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-23 02:33:05,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:33:05,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:33:05,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:33:05,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:33:05,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:33:05,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-23 02:33:05,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:33:05,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-23 02:33:05,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:33:05,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:33:05,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:33:05,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-23 02:33:05,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:33:05,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:33:05,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:33:05,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-23 02:33:05,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:33:05,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-11-23 02:33:05,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:33:05,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:33:05,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:33:05,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:33:05,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:33:05,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:33:05,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:33:05,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-23 02:33:05,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:33:05,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:33:05,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:33:05,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-23 02:33:05,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:33:05,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-23 02:33:05,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:33:05,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:33:05,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:33:05,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-23 02:33:05,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:33:05,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-23 02:33:05,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:33:05,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-23 02:33:05,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:33:05,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-11-23 02:33:05,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:33:05,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-11-23 02:33:05,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:33:05,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-11-23 02:33:05,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:33:05,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:33:05,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:33:05,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:33:05,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:33:05,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:33:05,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:33:05,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-23 02:33:05,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:33:05,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:33:05,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:33:05,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-23 02:33:05,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:33:05,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-23 02:33:05,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:33:05,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:33:05,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:33:05,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-23 02:33:05,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:33:05,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-23 02:33:05,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:33:05,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-23 02:33:05,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:33:05,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-11-23 02:33:05,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:33:05,301 INFO L134 CoverageAnalysis]: Checked inductivity of 1366 backedges. 2 proven. 36 refuted. 0 times theorem prover too weak. 1328 trivial. 0 not checked. [2022-11-23 02:33:05,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:33:05,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303446009] [2022-11-23 02:33:05,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303446009] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:33:05,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1358540581] [2022-11-23 02:33:05,302 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 02:33:05,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:33:05,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:33:05,303 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:33:05,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-23 02:33:10,965 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 02:33:10,965 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 02:33:10,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 4022 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-23 02:33:10,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:33:11,079 INFO L134 CoverageAnalysis]: Checked inductivity of 1366 backedges. 150 proven. 3 refuted. 0 times theorem prover too weak. 1213 trivial. 0 not checked. [2022-11-23 02:33:11,079 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:33:11,559 INFO L134 CoverageAnalysis]: Checked inductivity of 1366 backedges. 2 proven. 36 refuted. 0 times theorem prover too weak. 1328 trivial. 0 not checked. [2022-11-23 02:33:11,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1358540581] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:33:11,560 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 02:33:11,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 7, 7] total 20 [2022-11-23 02:33:11,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928213818] [2022-11-23 02:33:11,560 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 02:33:11,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-23 02:33:11,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:33:11,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-23 02:33:11,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2022-11-23 02:33:11,562 INFO L87 Difference]: Start difference. First operand 974 states and 1321 transitions. Second operand has 20 states, 18 states have (on average 11.277777777777779) internal successors, (203), 14 states have internal predecessors, (203), 4 states have call successors, (63), 8 states have call predecessors, (63), 4 states have return successors, (46), 2 states have call predecessors, (46), 4 states have call successors, (46) [2022-11-23 02:33:16,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:33:16,099 INFO L93 Difference]: Finished difference Result 2039 states and 2830 transitions. [2022-11-23 02:33:16,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-23 02:33:16,099 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 11.277777777777779) internal successors, (203), 14 states have internal predecessors, (203), 4 states have call successors, (63), 8 states have call predecessors, (63), 4 states have return successors, (46), 2 states have call predecessors, (46), 4 states have call successors, (46) Word has length 387 [2022-11-23 02:33:16,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:33:16,106 INFO L225 Difference]: With dead ends: 2039 [2022-11-23 02:33:16,106 INFO L226 Difference]: Without dead ends: 1085 [2022-11-23 02:33:16,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 882 GetRequests, 853 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=159, Invalid=653, Unknown=0, NotChecked=0, Total=812 [2022-11-23 02:33:16,111 INFO L413 NwaCegarLoop]: 614 mSDtfsCounter, 960 mSDsluCounter, 5027 mSDsCounter, 0 mSdLazyCounter, 3144 mSolverCounterSat, 462 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1032 SdHoareTripleChecker+Valid, 5641 SdHoareTripleChecker+Invalid, 3606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 462 IncrementalHoareTripleChecker+Valid, 3144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-23 02:33:16,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1032 Valid, 5641 Invalid, 3606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [462 Valid, 3144 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-11-23 02:33:16,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1085 states. [2022-11-23 02:33:16,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1085 to 976. [2022-11-23 02:33:16,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 976 states, 736 states have (on average 1.326086956521739) internal successors, (976), 765 states have internal predecessors, (976), 161 states have call successors, (161), 72 states have call predecessors, (161), 78 states have return successors, (188), 160 states have call predecessors, (188), 160 states have call successors, (188) [2022-11-23 02:33:16,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 976 states to 976 states and 1325 transitions. [2022-11-23 02:33:16,190 INFO L78 Accepts]: Start accepts. Automaton has 976 states and 1325 transitions. Word has length 387 [2022-11-23 02:33:16,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:33:16,191 INFO L495 AbstractCegarLoop]: Abstraction has 976 states and 1325 transitions. [2022-11-23 02:33:16,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 11.277777777777779) internal successors, (203), 14 states have internal predecessors, (203), 4 states have call successors, (63), 8 states have call predecessors, (63), 4 states have return successors, (46), 2 states have call predecessors, (46), 4 states have call successors, (46) [2022-11-23 02:33:16,191 INFO L276 IsEmpty]: Start isEmpty. Operand 976 states and 1325 transitions. [2022-11-23 02:33:16,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2022-11-23 02:33:16,197 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:33:16,198 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 12, 10, 10, 10, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 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] [2022-11-23 02:33:16,220 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-23 02:33:16,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:33:16,411 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:33:16,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:33:16,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1208219974, now seen corresponding path program 3 times [2022-11-23 02:33:16,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:33:16,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503104356] [2022-11-23 02:33:16,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:33:16,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:33:17,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:33:18,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:33:18,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:33:18,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:33:18,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:33:18,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:33:18,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:33:18,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 02:33:18,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:33:18,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:33:18,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:33:18,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:33:18,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:33:18,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-23 02:33:18,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:33:18,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:33:18,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:33:18,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:33:18,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:33:18,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-23 02:33:18,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:33:18,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-23 02:33:18,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:33:18,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:33:18,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:33:18,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:33:18,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:33:18,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-23 02:33:18,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:33:18,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-23 02:33:18,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:33:18,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:33:18,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:33:18,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-23 02:33:18,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:33:18,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:33:18,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:33:18,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-23 02:33:18,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:33:18,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-11-23 02:33:18,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:33:18,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:33:18,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:33:18,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:33:18,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:33:18,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:33:18,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:33:18,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-23 02:33:18,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:33:18,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:33:18,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:33:18,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-23 02:33:18,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:33:18,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-23 02:33:18,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:33:18,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:33:18,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:33:18,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-23 02:33:18,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:33:18,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-23 02:33:18,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:33:18,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-23 02:33:18,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:33:18,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-11-23 02:33:18,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:33:18,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2022-11-23 02:33:18,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:33:18,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-11-23 02:33:19,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:33:19,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:33:19,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:33:19,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:33:19,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:33:19,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:33:19,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:33:19,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-23 02:33:19,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:33:19,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:33:19,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:33:19,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-23 02:33:19,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:33:19,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-23 02:33:19,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:33:19,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:33:19,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:33:19,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-23 02:33:19,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:33:19,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-23 02:33:19,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:33:19,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-23 02:33:19,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:33:19,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2022-11-23 02:33:19,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:33:19,094 INFO L134 CoverageAnalysis]: Checked inductivity of 1420 backedges. 2 proven. 60 refuted. 0 times theorem prover too weak. 1358 trivial. 0 not checked. [2022-11-23 02:33:19,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:33:19,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503104356] [2022-11-23 02:33:19,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503104356] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:33:19,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [218391650] [2022-11-23 02:33:19,095 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 02:33:19,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:33:19,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:33:19,099 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:33:19,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-23 02:34:52,209 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-23 02:34:52,209 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 02:34:52,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 2834 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-23 02:34:52,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:34:52,365 INFO L134 CoverageAnalysis]: Checked inductivity of 1420 backedges. 70 proven. 6 refuted. 0 times theorem prover too weak. 1344 trivial. 0 not checked. [2022-11-23 02:34:52,366 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:34:52,848 INFO L134 CoverageAnalysis]: Checked inductivity of 1420 backedges. 64 proven. 6 refuted. 0 times theorem prover too weak. 1350 trivial. 0 not checked. [2022-11-23 02:34:52,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [218391650] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:34:52,849 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 02:34:52,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 7, 7] total 23 [2022-11-23 02:34:52,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931614766] [2022-11-23 02:34:52,850 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 02:34:52,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-23 02:34:52,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:34:52,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-23 02:34:52,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=405, Unknown=0, NotChecked=0, Total=506 [2022-11-23 02:34:52,852 INFO L87 Difference]: Start difference. First operand 976 states and 1325 transitions. Second operand has 23 states, 22 states have (on average 9.590909090909092) internal successors, (211), 17 states have internal predecessors, (211), 3 states have call successors, (47), 8 states have call predecessors, (47), 5 states have return successors, (38), 2 states have call predecessors, (38), 3 states have call successors, (38) [2022-11-23 02:34:57,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:34:57,592 INFO L93 Difference]: Finished difference Result 2071 states and 2891 transitions. [2022-11-23 02:34:57,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-23 02:34:57,592 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 9.590909090909092) internal successors, (211), 17 states have internal predecessors, (211), 3 states have call successors, (47), 8 states have call predecessors, (47), 5 states have return successors, (38), 2 states have call predecessors, (38), 3 states have call successors, (38) Word has length 391 [2022-11-23 02:34:57,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:34:57,607 INFO L225 Difference]: With dead ends: 2071 [2022-11-23 02:34:57,607 INFO L226 Difference]: Without dead ends: 1115 [2022-11-23 02:34:57,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 903 GetRequests, 860 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 422 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=433, Invalid=1459, Unknown=0, NotChecked=0, Total=1892 [2022-11-23 02:34:57,613 INFO L413 NwaCegarLoop]: 616 mSDtfsCounter, 889 mSDsluCounter, 4578 mSDsCounter, 0 mSdLazyCounter, 3013 mSolverCounterSat, 343 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 960 SdHoareTripleChecker+Valid, 5194 SdHoareTripleChecker+Invalid, 3356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 343 IncrementalHoareTripleChecker+Valid, 3013 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-23 02:34:57,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [960 Valid, 5194 Invalid, 3356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [343 Valid, 3013 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-11-23 02:34:57,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1115 states. [2022-11-23 02:34:57,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1115 to 1002. [2022-11-23 02:34:57,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1002 states, 760 states have (on average 1.3421052631578947) internal successors, (1020), 789 states have internal predecessors, (1020), 161 states have call successors, (161), 74 states have call predecessors, (161), 80 states have return successors, (192), 160 states have call predecessors, (192), 160 states have call successors, (192) [2022-11-23 02:34:57,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1002 states to 1002 states and 1373 transitions. [2022-11-23 02:34:57,700 INFO L78 Accepts]: Start accepts. Automaton has 1002 states and 1373 transitions. Word has length 391 [2022-11-23 02:34:57,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:34:57,700 INFO L495 AbstractCegarLoop]: Abstraction has 1002 states and 1373 transitions. [2022-11-23 02:34:57,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 9.590909090909092) internal successors, (211), 17 states have internal predecessors, (211), 3 states have call successors, (47), 8 states have call predecessors, (47), 5 states have return successors, (38), 2 states have call predecessors, (38), 3 states have call successors, (38) [2022-11-23 02:34:57,701 INFO L276 IsEmpty]: Start isEmpty. Operand 1002 states and 1373 transitions. [2022-11-23 02:34:57,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2022-11-23 02:34:57,707 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:34:57,708 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 24, 10, 10, 10, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 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] [2022-11-23 02:34:57,740 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-23 02:34:57,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:34:57,936 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:34:57,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:34:57,936 INFO L85 PathProgramCache]: Analyzing trace with hash -665383676, now seen corresponding path program 4 times [2022-11-23 02:34:57,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:34:57,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157743523] [2022-11-23 02:34:57,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:34:57,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:34:59,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:35:00,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:35:00,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:35:00,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:35:00,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:35:00,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:35:00,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:35:00,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 02:35:00,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:35:00,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:35:00,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:35:00,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:35:00,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:35:00,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-23 02:35:00,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:35:00,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:35:00,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:35:00,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:35:00,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:35:00,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-23 02:35:00,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:35:00,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-23 02:35:00,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:35:00,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:35:00,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:35:00,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:35:00,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:35:00,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-23 02:35:00,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:35:00,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-23 02:35:00,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:35:00,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:35:00,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:35:00,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-23 02:35:00,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:35:00,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:35:00,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:35:00,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-23 02:35:00,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:35:00,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-11-23 02:35:00,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:35:00,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:35:00,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:35:00,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:35:00,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:35:00,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:35:00,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:35:00,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-23 02:35:00,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:35:00,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:35:00,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:35:00,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-23 02:35:00,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:35:00,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-23 02:35:00,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:35:00,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:35:00,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:35:00,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-23 02:35:00,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:35:00,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-23 02:35:00,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:35:00,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-23 02:35:00,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:35:00,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-11-23 02:35:01,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:35:01,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-11-23 02:35:01,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:35:01,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-11-23 02:35:01,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:35:01,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:35:01,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:35:01,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:35:01,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:35:01,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:35:01,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:35:01,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-23 02:35:01,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:35:01,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:35:01,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:35:01,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-23 02:35:01,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:35:01,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-23 02:35:01,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:35:01,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:35:01,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:35:01,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-23 02:35:01,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:35:01,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-23 02:35:01,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:35:01,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-23 02:35:01,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:35:01,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2022-11-23 02:35:01,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:35:01,158 INFO L134 CoverageAnalysis]: Checked inductivity of 1678 backedges. 2 proven. 131 refuted. 0 times theorem prover too weak. 1545 trivial. 0 not checked. [2022-11-23 02:35:01,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:35:01,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157743523] [2022-11-23 02:35:01,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157743523] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:35:01,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1282445181] [2022-11-23 02:35:01,158 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 02:35:01,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:35:01,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:35:01,159 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:35:01,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-23 02:35:03,229 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 02:35:03,229 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 02:35:03,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 4262 conjuncts, 47 conjunts are in the unsatisfiable core [2022-11-23 02:35:03,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:35:03,511 INFO L134 CoverageAnalysis]: Checked inductivity of 1678 backedges. 238 proven. 10 refuted. 0 times theorem prover too weak. 1430 trivial. 0 not checked. [2022-11-23 02:35:03,516 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:35:04,278 INFO L134 CoverageAnalysis]: Checked inductivity of 1678 backedges. 2 proven. 131 refuted. 0 times theorem prover too weak. 1545 trivial. 0 not checked. [2022-11-23 02:35:04,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1282445181] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:35:04,279 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 02:35:04,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9, 9] total 24 [2022-11-23 02:35:04,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047953845] [2022-11-23 02:35:04,280 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 02:35:04,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-23 02:35:04,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:35:04,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-23 02:35:04,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=477, Unknown=0, NotChecked=0, Total=552 [2022-11-23 02:35:04,282 INFO L87 Difference]: Start difference. First operand 1002 states and 1373 transitions. Second operand has 24 states, 22 states have (on average 9.409090909090908) internal successors, (207), 18 states have internal predecessors, (207), 4 states have call successors, (63), 8 states have call predecessors, (63), 4 states have return successors, (46), 2 states have call predecessors, (46), 4 states have call successors, (46) [2022-11-23 02:35:11,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:35:11,258 INFO L93 Difference]: Finished difference Result 2125 states and 2927 transitions. [2022-11-23 02:35:11,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-23 02:35:11,258 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 9.409090909090908) internal successors, (207), 18 states have internal predecessors, (207), 4 states have call successors, (63), 8 states have call predecessors, (63), 4 states have return successors, (46), 2 states have call predecessors, (46), 4 states have call successors, (46) Word has length 403 [2022-11-23 02:35:11,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:35:11,265 INFO L225 Difference]: With dead ends: 2125 [2022-11-23 02:35:11,265 INFO L226 Difference]: Without dead ends: 1147 [2022-11-23 02:35:11,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 928 GetRequests, 883 SyntacticMatches, 3 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 318 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=324, Invalid=1568, Unknown=0, NotChecked=0, Total=1892 [2022-11-23 02:35:11,269 INFO L413 NwaCegarLoop]: 615 mSDtfsCounter, 1145 mSDsluCounter, 7442 mSDsCounter, 0 mSdLazyCounter, 4571 mSolverCounterSat, 614 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1215 SdHoareTripleChecker+Valid, 8057 SdHoareTripleChecker+Invalid, 5185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 614 IncrementalHoareTripleChecker+Valid, 4571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-11-23 02:35:11,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1215 Valid, 8057 Invalid, 5185 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [614 Valid, 4571 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2022-11-23 02:35:11,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1147 states. [2022-11-23 02:35:11,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1147 to 1016. [2022-11-23 02:35:11,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1016 states, 774 states have (on average 1.347545219638243) internal successors, (1043), 801 states have internal predecessors, (1043), 161 states have call successors, (161), 76 states have call predecessors, (161), 80 states have return successors, (186), 160 states have call predecessors, (186), 160 states have call successors, (186) [2022-11-23 02:35:11,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1016 states to 1016 states and 1390 transitions. [2022-11-23 02:35:11,367 INFO L78 Accepts]: Start accepts. Automaton has 1016 states and 1390 transitions. Word has length 403 [2022-11-23 02:35:11,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:35:11,368 INFO L495 AbstractCegarLoop]: Abstraction has 1016 states and 1390 transitions. [2022-11-23 02:35:11,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 9.409090909090908) internal successors, (207), 18 states have internal predecessors, (207), 4 states have call successors, (63), 8 states have call predecessors, (63), 4 states have return successors, (46), 2 states have call predecessors, (46), 4 states have call successors, (46) [2022-11-23 02:35:11,368 INFO L276 IsEmpty]: Start isEmpty. Operand 1016 states and 1390 transitions. [2022-11-23 02:35:11,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2022-11-23 02:35:11,374 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:35:11,375 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 26, 10, 10, 10, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 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] [2022-11-23 02:35:11,395 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2022-11-23 02:35:11,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:35:11,592 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:35:11,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:35:11,592 INFO L85 PathProgramCache]: Analyzing trace with hash 141366868, now seen corresponding path program 5 times [2022-11-23 02:35:11,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:35:11,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551453978] [2022-11-23 02:35:11,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:35:11,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:35:13,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:35:13,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:35:13,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:35:13,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:35:13,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:35:13,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:35:13,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:35:13,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 02:35:13,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:35:13,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:35:13,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:35:13,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:35:13,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:35:13,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-23 02:35:13,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:35:13,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:35:13,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:35:13,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:35:13,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:35:13,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-23 02:35:13,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:35:14,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-23 02:35:14,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:35:14,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:35:14,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:35:14,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:35:14,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:35:14,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-23 02:35:14,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:35:14,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-23 02:35:14,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:35:14,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:35:14,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:35:14,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-23 02:35:14,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:35:14,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:35:14,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:35:14,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-23 02:35:14,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:35:14,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-11-23 02:35:14,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:35:14,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:35:14,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:35:14,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:35:14,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:35:14,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:35:14,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:35:14,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-23 02:35:14,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:35:14,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:35:14,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:35:14,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-23 02:35:14,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:35:14,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-23 02:35:14,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:35:14,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:35:14,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:35:14,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-23 02:35:14,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:35:14,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-23 02:35:14,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:35:14,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-23 02:35:14,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:35:14,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2022-11-23 02:35:14,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:35:14,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-11-23 02:35:14,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:35:14,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-11-23 02:35:14,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:35:14,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:35:14,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:35:14,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:35:14,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:35:14,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:35:14,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:35:14,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-23 02:35:14,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:35:14,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:35:14,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:35:14,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-23 02:35:14,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:35:14,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-23 02:35:14,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:35:14,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:35:14,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:35:14,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-23 02:35:14,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:35:14,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-23 02:35:14,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:35:14,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-23 02:35:14,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:35:14,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2022-11-23 02:35:14,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:35:14,588 INFO L134 CoverageAnalysis]: Checked inductivity of 1735 backedges. 2 proven. 165 refuted. 0 times theorem prover too weak. 1568 trivial. 0 not checked. [2022-11-23 02:35:14,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:35:14,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551453978] [2022-11-23 02:35:14,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551453978] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:35:14,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [249368652] [2022-11-23 02:35:14,589 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-23 02:35:14,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:35:14,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:35:14,590 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:35:14,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b75992de-6fa8-4abe-b1c7-b089cd5f8571/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process