./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--net--ethernet--sis--sis900.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4e6da86-3232-42a8-9fb4-f9db4298927f/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4e6da86-3232-42a8-9fb4-f9db4298927f/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4e6da86-3232-42a8-9fb4-f9db4298927f/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4e6da86-3232-42a8-9fb4-f9db4298927f/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--sis--sis900.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4e6da86-3232-42a8-9fb4-f9db4298927f/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4e6da86-3232-42a8-9fb4-f9db4298927f/bin/uautomizer-Dbtcem3rbc --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 8a589a2971b8b26c84b19dd15ca599e2c024bda8a102f55ffa19d72f19d12686 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 20:42:10,958 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:42:10,961 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:42:11,016 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:42:11,017 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:42:11,022 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:42:11,024 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:42:11,029 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:42:11,031 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:42:11,038 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:42:11,039 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:42:11,042 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:42:11,043 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:42:11,046 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:42:11,048 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:42:11,050 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:42:11,052 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:42:11,054 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:42:11,055 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:42:11,066 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:42:11,068 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:42:11,069 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:42:11,073 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:42:11,074 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:42:11,083 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:42:11,083 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:42:11,084 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:42:11,086 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:42:11,086 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:42:11,088 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:42:11,088 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:42:11,089 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:42:11,091 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:42:11,093 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:42:11,095 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:42:11,095 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:42:11,096 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:42:11,096 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:42:11,097 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:42:11,098 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:42:11,099 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:42:11,104 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4e6da86-3232-42a8-9fb4-f9db4298927f/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-02 20:42:11,147 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:42:11,147 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:42:11,148 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:42:11,148 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:42:11,149 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:42:11,150 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:42:11,150 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:42:11,151 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:42:11,151 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:42:11,151 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:42:11,152 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:42:11,153 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:42:11,153 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:42:11,153 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:42:11,153 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:42:11,153 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:42:11,154 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:42:11,154 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:42:11,154 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:42:11,154 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:42:11,155 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:42:11,155 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:42:11,155 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:42:11,155 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:42:11,156 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:42:11,156 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:42:11,158 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:42:11,158 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:42:11,158 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:42:11,158 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:42:11,159 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4e6da86-3232-42a8-9fb4-f9db4298927f/bin/uautomizer-Dbtcem3rbc/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4e6da86-3232-42a8-9fb4-f9db4298927f/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8a589a2971b8b26c84b19dd15ca599e2c024bda8a102f55ffa19d72f19d12686 [2022-11-02 20:42:11,519 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:42:11,545 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:42:11,548 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:42:11,550 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:42:11,555 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:42:11,556 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4e6da86-3232-42a8-9fb4-f9db4298927f/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--sis--sis900.ko-entry_point.cil.out.i [2022-11-02 20:42:11,696 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4e6da86-3232-42a8-9fb4-f9db4298927f/bin/uautomizer-Dbtcem3rbc/data/5a58351a7/5c636984c5034395aa8dcf90c3aac38c/FLAG1f55726c0 [2022-11-02 20:42:12,726 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:42:12,727 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4e6da86-3232-42a8-9fb4-f9db4298927f/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--sis--sis900.ko-entry_point.cil.out.i [2022-11-02 20:42:12,781 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4e6da86-3232-42a8-9fb4-f9db4298927f/bin/uautomizer-Dbtcem3rbc/data/5a58351a7/5c636984c5034395aa8dcf90c3aac38c/FLAG1f55726c0 [2022-11-02 20:42:13,147 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4e6da86-3232-42a8-9fb4-f9db4298927f/bin/uautomizer-Dbtcem3rbc/data/5a58351a7/5c636984c5034395aa8dcf90c3aac38c [2022-11-02 20:42:13,150 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:42:13,152 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:42:13,155 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:42:13,156 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:42:13,159 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:42:13,160 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:42:13" (1/1) ... [2022-11-02 20:42:13,161 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f37bba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:42:13, skipping insertion in model container [2022-11-02 20:42:13,162 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:42:13" (1/1) ... [2022-11-02 20:42:13,170 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:42:13,321 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:42:15,556 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4e6da86-3232-42a8-9fb4-f9db4298927f/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--sis--sis900.ko-entry_point.cil.out.i[280896,280909] [2022-11-02 20:42:15,635 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:42:15,693 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:42:16,207 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4e6da86-3232-42a8-9fb4-f9db4298927f/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--sis--sis900.ko-entry_point.cil.out.i[280896,280909] [2022-11-02 20:42:16,218 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:42:16,450 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:42:16,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:42:16 WrapperNode [2022-11-02 20:42:16,452 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:42:16,453 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:42:16,454 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:42:16,454 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:42:16,462 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:42:16" (1/1) ... [2022-11-02 20:42:16,570 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:42:16" (1/1) ... [2022-11-02 20:42:16,772 INFO L138 Inliner]: procedures = 274, calls = 1587, calls flagged for inlining = 149, calls inlined = 146, statements flattened = 4283 [2022-11-02 20:42:16,772 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:42:16,773 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:42:16,773 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:42:16,774 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:42:16,784 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:42:16" (1/1) ... [2022-11-02 20:42:16,784 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:42:16" (1/1) ... [2022-11-02 20:42:16,824 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:42:16" (1/1) ... [2022-11-02 20:42:16,824 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:42:16" (1/1) ... [2022-11-02 20:42:16,942 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:42:16" (1/1) ... [2022-11-02 20:42:16,962 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:42:16" (1/1) ... [2022-11-02 20:42:16,994 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:42:16" (1/1) ... [2022-11-02 20:42:17,013 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:42:16" (1/1) ... [2022-11-02 20:42:17,069 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:42:17,070 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:42:17,070 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:42:17,071 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:42:17,072 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:42:16" (1/1) ... [2022-11-02 20:42:17,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:42:17,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4e6da86-3232-42a8-9fb4-f9db4298927f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:42:17,104 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4e6da86-3232-42a8-9fb4-f9db4298927f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:42:17,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4e6da86-3232-42a8-9fb4-f9db4298927f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:42:17,169 INFO L130 BoogieDeclarations]: Found specification of procedure sis900_init_rxfilter [2022-11-02 20:42:17,170 INFO L138 BoogieDeclarations]: Found implementation of procedure sis900_init_rxfilter [2022-11-02 20:42:17,170 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_write [2022-11-02 20:42:17,170 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_write [2022-11-02 20:42:17,170 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_shutdown_3 [2022-11-02 20:42:17,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_shutdown_3 [2022-11-02 20:42:17,171 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-02 20:42:17,171 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-02 20:42:17,171 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-02 20:42:17,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-02 20:42:17,172 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-02 20:42:17,172 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-02 20:42:17,172 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2022-11-02 20:42:17,172 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2022-11-02 20:42:17,172 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-02 20:42:17,172 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-02 20:42:17,173 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-11-02 20:42:17,173 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-11-02 20:42:17,173 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2022-11-02 20:42:17,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2022-11-02 20:42:17,174 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-02 20:42:17,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-02 20:42:17,174 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_reset [2022-11-02 20:42:17,174 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_reset [2022-11-02 20:42:17,174 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-02 20:42:17,175 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-02 20:42:17,175 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2022-11-02 20:42:17,175 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2022-11-02 20:42:17,175 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2022-11-02 20:42:17,175 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2022-11-02 20:42:17,176 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-02 20:42:17,176 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-02 20:42:17,176 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2022-11-02 20:42:17,176 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2022-11-02 20:42:17,176 INFO L130 BoogieDeclarations]: Found specification of procedure sis900_default_phy [2022-11-02 20:42:17,176 INFO L138 BoogieDeclarations]: Found implementation of procedure sis900_default_phy [2022-11-02 20:42:17,177 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite8 [2022-11-02 20:42:17,177 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite8 [2022-11-02 20:42:17,177 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-02 20:42:17,177 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-02 20:42:17,178 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2022-11-02 20:42:17,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2022-11-02 20:42:17,178 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-02 20:42:17,178 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-02 20:42:17,179 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2022-11-02 20:42:17,179 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2022-11-02 20:42:17,179 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2022-11-02 20:42:17,179 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2022-11-02 20:42:17,179 INFO L130 BoogieDeclarations]: Found specification of procedure sis900_check_mode [2022-11-02 20:42:17,180 INFO L138 BoogieDeclarations]: Found implementation of procedure sis900_check_mode [2022-11-02 20:42:17,180 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-02 20:42:17,180 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-02 20:42:17,180 INFO L130 BoogieDeclarations]: Found specification of procedure read_eeprom [2022-11-02 20:42:17,181 INFO L138 BoogieDeclarations]: Found implementation of procedure read_eeprom [2022-11-02 20:42:17,181 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2022-11-02 20:42:17,181 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2022-11-02 20:42:17,182 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:42:17,183 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-02 20:42:17,183 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-02 20:42:17,183 INFO L130 BoogieDeclarations]: Found specification of procedure eth_mac_addr [2022-11-02 20:42:17,183 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_mac_addr [2022-11-02 20:42:17,184 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-02 20:42:17,184 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-02 20:42:17,184 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-02 20:42:17,184 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2022-11-02 20:42:17,184 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2022-11-02 20:42:17,184 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-02 20:42:17,185 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-02 20:42:17,186 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2022-11-02 20:42:17,186 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2022-11-02 20:42:17,186 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-02 20:42:17,187 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-02 20:42:17,187 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2022-11-02 20:42:17,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2022-11-02 20:42:17,187 INFO L130 BoogieDeclarations]: Found specification of procedure sis900_init_rx_ring [2022-11-02 20:42:17,187 INFO L138 BoogieDeclarations]: Found implementation of procedure sis900_init_rx_ring [2022-11-02 20:42:17,188 INFO L130 BoogieDeclarations]: Found specification of procedure sis900_remove [2022-11-02 20:42:17,188 INFO L138 BoogieDeclarations]: Found implementation of procedure sis900_remove [2022-11-02 20:42:17,188 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-02 20:42:17,188 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-02 20:42:17,188 INFO L130 BoogieDeclarations]: Found specification of procedure sis630_set_eq [2022-11-02 20:42:17,188 INFO L138 BoogieDeclarations]: Found implementation of procedure sis630_set_eq [2022-11-02 20:42:17,189 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_device [2022-11-02 20:42:17,189 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_device [2022-11-02 20:42:17,189 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2022-11-02 20:42:17,189 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2022-11-02 20:42:17,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:42:17,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-02 20:42:17,190 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_byte [2022-11-02 20:42:17,190 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_byte [2022-11-02 20:42:17,191 INFO L130 BoogieDeclarations]: Found specification of procedure eth_change_mtu [2022-11-02 20:42:17,191 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_change_mtu [2022-11-02 20:42:17,191 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-02 20:42:17,191 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-02 20:42:17,191 INFO L130 BoogieDeclarations]: Found specification of procedure sis900_init_tx_ring [2022-11-02 20:42:17,191 INFO L138 BoogieDeclarations]: Found implementation of procedure sis900_init_tx_ring [2022-11-02 20:42:17,192 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-02 20:42:17,193 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-02 20:42:17,193 INFO L130 BoogieDeclarations]: Found specification of procedure eth_hw_addr_random [2022-11-02 20:42:17,193 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_hw_addr_random [2022-11-02 20:42:17,194 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2022-11-02 20:42:17,194 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2022-11-02 20:42:17,194 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-02 20:42:17,195 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-02 20:42:17,195 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_dword [2022-11-02 20:42:17,195 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_dword [2022-11-02 20:42:17,195 INFO L130 BoogieDeclarations]: Found specification of procedure sis900_set_mode [2022-11-02 20:42:17,195 INFO L138 BoogieDeclarations]: Found implementation of procedure sis900_set_mode [2022-11-02 20:42:17,196 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:42:17,196 INFO L130 BoogieDeclarations]: Found specification of procedure sis900_poll [2022-11-02 20:42:17,196 INFO L138 BoogieDeclarations]: Found implementation of procedure sis900_poll [2022-11-02 20:42:17,196 INFO L130 BoogieDeclarations]: Found specification of procedure set_rx_mode [2022-11-02 20:42:17,197 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rx_mode [2022-11-02 20:42:17,197 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-02 20:42:17,197 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-02 20:42:17,197 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-02 20:42:17,197 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-02 20:42:17,198 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_mapping_error [2022-11-02 20:42:17,199 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_mapping_error [2022-11-02 20:42:17,201 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-02 20:42:17,201 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-02 20:42:17,202 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-11-02 20:42:17,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-11-02 20:42:17,202 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-02 20:42:17,204 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-02 20:42:17,205 INFO L130 BoogieDeclarations]: Found specification of procedure sis900_resume [2022-11-02 20:42:17,205 INFO L138 BoogieDeclarations]: Found implementation of procedure sis900_resume [2022-11-02 20:42:17,205 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2022-11-02 20:42:17,211 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2022-11-02 20:42:17,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:42:17,212 INFO L130 BoogieDeclarations]: Found specification of procedure __bitrev16 [2022-11-02 20:42:17,212 INFO L138 BoogieDeclarations]: Found implementation of procedure __bitrev16 [2022-11-02 20:42:17,212 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2022-11-02 20:42:17,212 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2022-11-02 20:42:17,213 INFO L130 BoogieDeclarations]: Found specification of procedure sis900_interrupt [2022-11-02 20:42:17,213 INFO L138 BoogieDeclarations]: Found implementation of procedure sis900_interrupt [2022-11-02 20:42:17,213 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-02 20:42:17,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-02 20:42:17,213 INFO L130 BoogieDeclarations]: Found specification of procedure sis900_reset_phy [2022-11-02 20:42:17,213 INFO L138 BoogieDeclarations]: Found implementation of procedure sis900_reset_phy [2022-11-02 20:42:17,213 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-02 20:42:17,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-02 20:42:17,214 INFO L130 BoogieDeclarations]: Found specification of procedure sis900_set_config [2022-11-02 20:42:17,214 INFO L138 BoogieDeclarations]: Found implementation of procedure sis900_set_config [2022-11-02 20:42:17,214 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-02 20:42:17,214 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dev_put [2022-11-02 20:42:17,214 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dev_put [2022-11-02 20:42:17,215 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-02 20:42:17,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-02 20:42:17,215 INFO L130 BoogieDeclarations]: Found specification of procedure __bitrev8 [2022-11-02 20:42:17,215 INFO L138 BoogieDeclarations]: Found implementation of procedure __bitrev8 [2022-11-02 20:42:17,215 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:42:17,215 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_idle [2022-11-02 20:42:17,216 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_idle [2022-11-02 20:42:17,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-02 20:42:17,216 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_dword [2022-11-02 20:42:17,216 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_dword [2022-11-02 20:42:17,216 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2022-11-02 20:42:17,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2022-11-02 20:42:17,216 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_2 [2022-11-02 20:42:17,217 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_2 [2022-11-02 20:42:17,217 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2022-11-02 20:42:17,217 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2022-11-02 20:42:17,217 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_resume_early_3 [2022-11-02 20:42:17,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_resume_early_3 [2022-11-02 20:42:17,217 INFO L130 BoogieDeclarations]: Found specification of procedure sis900_tx_timeout [2022-11-02 20:42:17,218 INFO L138 BoogieDeclarations]: Found implementation of procedure sis900_tx_timeout [2022-11-02 20:42:17,218 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2022-11-02 20:42:17,218 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2022-11-02 20:42:17,218 INFO L130 BoogieDeclarations]: Found specification of procedure mii_ioctl [2022-11-02 20:42:17,218 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_ioctl [2022-11-02 20:42:17,218 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2022-11-02 20:42:17,219 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2022-11-02 20:42:17,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:42:17,219 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_read [2022-11-02 20:42:17,219 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_read [2022-11-02 20:42:17,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:42:17,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:42:18,125 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:42:18,132 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:42:18,622 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-02 20:42:22,203 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:42:22,222 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:42:22,222 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 20:42:22,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:42:22 BoogieIcfgContainer [2022-11-02 20:42:22,227 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:42:22,230 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:42:22,230 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:42:22,234 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:42:22,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:42:13" (1/3) ... [2022-11-02 20:42:22,235 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5816e1c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:42:22, skipping insertion in model container [2022-11-02 20:42:22,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:42:16" (2/3) ... [2022-11-02 20:42:22,236 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5816e1c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:42:22, skipping insertion in model container [2022-11-02 20:42:22,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:42:22" (3/3) ... [2022-11-02 20:42:22,237 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--sis--sis900.ko-entry_point.cil.out.i [2022-11-02 20:42:22,260 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:42:22,260 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:42:22,360 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:42:22,367 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;@756a8886, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:42:22,368 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:42:22,379 INFO L276 IsEmpty]: Start isEmpty. Operand has 1706 states, 1176 states have (on average 1.3265306122448979) internal successors, (1560), 1200 states have internal predecessors, (1560), 446 states have call successors, (446), 83 states have call predecessors, (446), 82 states have return successors, (439), 435 states have call predecessors, (439), 439 states have call successors, (439) [2022-11-02 20:42:22,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-11-02 20:42:22,416 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:42:22,417 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:42:22,418 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:42:22,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:42:22,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1411471056, now seen corresponding path program 1 times [2022-11-02 20:42:22,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:42:22,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653305165] [2022-11-02 20:42:22,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:22,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:42:22,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:23,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:42:23,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:23,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:42:23,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:23,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:42:23,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:23,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-02 20:42:23,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:23,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:42:23,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:23,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:42:23,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:23,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-02 20:42:23,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:23,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:42:23,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:23,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:42:23,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:23,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-02 20:42:23,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:23,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:42:23,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:23,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:42:23,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:23,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-02 20:42:23,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:23,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:42:23,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:23,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:42:23,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:23,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-02 20:42:23,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:23,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:42:23,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:23,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:42:23,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:23,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-02 20:42:23,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:23,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-02 20:42:23,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:23,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-02 20:42:23,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:23,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-02 20:42:23,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:23,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-11-02 20:42:23,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:23,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-11-02 20:42:23,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:23,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-11-02 20:42:23,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:23,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-11-02 20:42:23,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:23,695 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2022-11-02 20:42:23,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:42:23,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653305165] [2022-11-02 20:42:23,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653305165] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:42:23,697 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:42:23,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:42:23,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014202333] [2022-11-02 20:42:23,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:42:23,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:42:23,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:42:23,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:42:23,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:42:23,758 INFO L87 Difference]: Start difference. First operand has 1706 states, 1176 states have (on average 1.3265306122448979) internal successors, (1560), 1200 states have internal predecessors, (1560), 446 states have call successors, (446), 83 states have call predecessors, (446), 82 states have return successors, (439), 435 states have call predecessors, (439), 439 states have call successors, (439) Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 2 states have internal predecessors, (62), 2 states have call successors, (21), 6 states have call predecessors, (21), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-02 20:42:30,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:42:30,684 INFO L93 Difference]: Finished difference Result 3618 states and 5281 transitions. [2022-11-02 20:42:30,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:42:30,688 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 2 states have internal predecessors, (62), 2 states have call successors, (21), 6 states have call predecessors, (21), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 178 [2022-11-02 20:42:30,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:42:30,740 INFO L225 Difference]: With dead ends: 3618 [2022-11-02 20:42:30,740 INFO L226 Difference]: Without dead ends: 1897 [2022-11-02 20:42:30,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:42:30,772 INFO L413 NwaCegarLoop]: 2149 mSDtfsCounter, 1890 mSDsluCounter, 3216 mSDsCounter, 0 mSdLazyCounter, 2618 mSolverCounterSat, 1888 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1958 SdHoareTripleChecker+Valid, 5365 SdHoareTripleChecker+Invalid, 4506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1888 IncrementalHoareTripleChecker+Valid, 2618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:42:30,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1958 Valid, 5365 Invalid, 4506 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1888 Valid, 2618 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2022-11-02 20:42:30,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1897 states. [2022-11-02 20:42:31,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1897 to 1686. [2022-11-02 20:42:31,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1686 states, 1165 states have (on average 1.3167381974248926) internal successors, (1534), 1180 states have internal predecessors, (1534), 439 states have call successors, (439), 82 states have call predecessors, (439), 81 states have return successors, (438), 434 states have call predecessors, (438), 438 states have call successors, (438) [2022-11-02 20:42:31,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1686 states to 1686 states and 2411 transitions. [2022-11-02 20:42:31,110 INFO L78 Accepts]: Start accepts. Automaton has 1686 states and 2411 transitions. Word has length 178 [2022-11-02 20:42:31,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:42:31,112 INFO L495 AbstractCegarLoop]: Abstraction has 1686 states and 2411 transitions. [2022-11-02 20:42:31,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 2 states have internal predecessors, (62), 2 states have call successors, (21), 6 states have call predecessors, (21), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-02 20:42:31,113 INFO L276 IsEmpty]: Start isEmpty. Operand 1686 states and 2411 transitions. [2022-11-02 20:42:31,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-11-02 20:42:31,129 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:42:31,130 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:42:31,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:42:31,130 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:42:31,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:42:31,131 INFO L85 PathProgramCache]: Analyzing trace with hash 419462204, now seen corresponding path program 1 times [2022-11-02 20:42:31,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:42:31,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165463350] [2022-11-02 20:42:31,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:31,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:42:31,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:31,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:42:31,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:31,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:42:31,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:31,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:42:31,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:31,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-02 20:42:31,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:31,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:42:31,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:31,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:42:31,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:31,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-02 20:42:31,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:31,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:42:31,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:31,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:42:31,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:31,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-02 20:42:31,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:31,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:42:31,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:31,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:42:31,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:31,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-02 20:42:31,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:31,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:42:31,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:31,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:42:31,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:31,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-02 20:42:31,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:31,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:42:31,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:31,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:42:31,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:32,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-02 20:42:32,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:32,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-02 20:42:32,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:32,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-02 20:42:32,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:32,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-02 20:42:32,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:32,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-11-02 20:42:32,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:32,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-11-02 20:42:32,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:32,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-11-02 20:42:32,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:32,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-11-02 20:42:32,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:32,119 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2022-11-02 20:42:32,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:42:32,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165463350] [2022-11-02 20:42:32,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165463350] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:42:32,120 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:42:32,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 20:42:32,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906456583] [2022-11-02 20:42:32,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:42:32,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:42:32,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:42:32,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:42:32,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:42:32,123 INFO L87 Difference]: Start difference. First operand 1686 states and 2411 transitions. Second operand has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 4 states have internal predecessors, (62), 3 states have call successors, (21), 7 states have call predecessors, (21), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-02 20:42:44,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:42:44,404 INFO L93 Difference]: Finished difference Result 5427 states and 7844 transitions. [2022-11-02 20:42:44,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-02 20:42:44,408 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 4 states have internal predecessors, (62), 3 states have call successors, (21), 7 states have call predecessors, (21), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 178 [2022-11-02 20:42:44,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:42:44,440 INFO L225 Difference]: With dead ends: 5427 [2022-11-02 20:42:44,440 INFO L226 Difference]: Without dead ends: 3769 [2022-11-02 20:42:44,451 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=282, Unknown=0, NotChecked=0, Total=420 [2022-11-02 20:42:44,458 INFO L413 NwaCegarLoop]: 2442 mSDtfsCounter, 6781 mSDsluCounter, 5250 mSDsCounter, 0 mSdLazyCounter, 7240 mSolverCounterSat, 5395 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7098 SdHoareTripleChecker+Valid, 7692 SdHoareTripleChecker+Invalid, 12635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5395 IncrementalHoareTripleChecker+Valid, 7240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:42:44,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7098 Valid, 7692 Invalid, 12635 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5395 Valid, 7240 Invalid, 0 Unknown, 0 Unchecked, 11.4s Time] [2022-11-02 20:42:44,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3769 states. [2022-11-02 20:42:44,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3769 to 3338. [2022-11-02 20:42:44,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3338 states, 2308 states have (on average 1.317157712305026) internal successors, (3040), 2342 states have internal predecessors, (3040), 867 states have call successors, (867), 163 states have call predecessors, (867), 162 states have return successors, (866), 854 states have call predecessors, (866), 866 states have call successors, (866) [2022-11-02 20:42:44,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3338 states to 3338 states and 4773 transitions. [2022-11-02 20:42:44,753 INFO L78 Accepts]: Start accepts. Automaton has 3338 states and 4773 transitions. Word has length 178 [2022-11-02 20:42:44,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:42:44,754 INFO L495 AbstractCegarLoop]: Abstraction has 3338 states and 4773 transitions. [2022-11-02 20:42:44,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 4 states have internal predecessors, (62), 3 states have call successors, (21), 7 states have call predecessors, (21), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-02 20:42:44,755 INFO L276 IsEmpty]: Start isEmpty. Operand 3338 states and 4773 transitions. [2022-11-02 20:42:44,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-02 20:42:44,763 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:42:44,763 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:42:44,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:42:44,764 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:42:44,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:42:44,765 INFO L85 PathProgramCache]: Analyzing trace with hash 773468645, now seen corresponding path program 1 times [2022-11-02 20:42:44,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:42:44,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108536681] [2022-11-02 20:42:44,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:44,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:42:44,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:45,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:42:45,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:45,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:42:45,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:45,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:42:45,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:45,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-02 20:42:45,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:45,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:42:45,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:45,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:42:45,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:45,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-02 20:42:45,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:45,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:42:45,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:45,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:42:45,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:45,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-02 20:42:45,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:45,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:42:45,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:45,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:42:45,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:45,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-02 20:42:45,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:45,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:42:45,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:45,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:42:45,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:45,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-02 20:42:45,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:45,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:42:45,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:45,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:42:45,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:45,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-02 20:42:45,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:45,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-02 20:42:45,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:45,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-02 20:42:45,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:45,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-02 20:42:45,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:45,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-11-02 20:42:45,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:45,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-11-02 20:42:45,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:45,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-11-02 20:42:45,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:45,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-11-02 20:42:45,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:45,465 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2022-11-02 20:42:45,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:42:45,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108536681] [2022-11-02 20:42:45,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108536681] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:42:45,466 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:42:45,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 20:42:45,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222803412] [2022-11-02 20:42:45,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:42:45,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:42:45,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:42:45,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:42:45,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:42:45,468 INFO L87 Difference]: Start difference. First operand 3338 states and 4773 transitions. Second operand has 9 states, 9 states have (on average 7.0) internal successors, (63), 4 states have internal predecessors, (63), 3 states have call successors, (21), 7 states have call predecessors, (21), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-02 20:42:58,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:42:58,713 INFO L93 Difference]: Finished difference Result 10810 states and 15611 transitions. [2022-11-02 20:42:58,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-02 20:42:58,715 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 4 states have internal predecessors, (63), 3 states have call successors, (21), 7 states have call predecessors, (21), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 179 [2022-11-02 20:42:58,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:42:58,770 INFO L225 Difference]: With dead ends: 10810 [2022-11-02 20:42:58,770 INFO L226 Difference]: Without dead ends: 7500 [2022-11-02 20:42:58,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=282, Unknown=0, NotChecked=0, Total=420 [2022-11-02 20:42:58,792 INFO L413 NwaCegarLoop]: 2386 mSDtfsCounter, 5584 mSDsluCounter, 6713 mSDsCounter, 0 mSdLazyCounter, 8942 mSolverCounterSat, 4205 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5899 SdHoareTripleChecker+Valid, 9099 SdHoareTripleChecker+Invalid, 13147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4205 IncrementalHoareTripleChecker+Valid, 8942 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:42:58,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5899 Valid, 9099 Invalid, 13147 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4205 Valid, 8942 Invalid, 0 Unknown, 0 Unchecked, 12.4s Time] [2022-11-02 20:42:58,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7500 states. [2022-11-02 20:42:59,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7500 to 6647. [2022-11-02 20:42:59,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6647 states, 4600 states have (on average 1.3169565217391304) internal successors, (6058), 4667 states have internal predecessors, (6058), 1722 states have call successors, (1722), 325 states have call predecessors, (1722), 324 states have return successors, (1721), 1698 states have call predecessors, (1721), 1721 states have call successors, (1721) [2022-11-02 20:42:59,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6647 states to 6647 states and 9501 transitions. [2022-11-02 20:42:59,369 INFO L78 Accepts]: Start accepts. Automaton has 6647 states and 9501 transitions. Word has length 179 [2022-11-02 20:42:59,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:42:59,373 INFO L495 AbstractCegarLoop]: Abstraction has 6647 states and 9501 transitions. [2022-11-02 20:42:59,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 4 states have internal predecessors, (63), 3 states have call successors, (21), 7 states have call predecessors, (21), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-02 20:42:59,373 INFO L276 IsEmpty]: Start isEmpty. Operand 6647 states and 9501 transitions. [2022-11-02 20:42:59,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-11-02 20:42:59,383 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:42:59,383 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:42:59,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:42:59,384 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:42:59,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:42:59,385 INFO L85 PathProgramCache]: Analyzing trace with hash 2055801823, now seen corresponding path program 1 times [2022-11-02 20:42:59,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:42:59,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300878940] [2022-11-02 20:42:59,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:59,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:42:59,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:59,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:42:59,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:59,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:42:59,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:59,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:42:59,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:59,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-02 20:42:59,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:59,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:42:59,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:59,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:42:59,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:59,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-02 20:42:59,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:59,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:42:59,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:59,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:42:59,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:59,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-02 20:42:59,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:59,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:42:59,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:59,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:42:59,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:59,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-02 20:42:59,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:59,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:42:59,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:59,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:42:59,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:59,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-02 20:42:59,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:59,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:42:59,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:59,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:43:00,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:00,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-02 20:43:00,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:00,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-02 20:43:00,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:00,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-02 20:43:00,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:00,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-02 20:43:00,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:00,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-11-02 20:43:00,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:00,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-11-02 20:43:00,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:00,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-11-02 20:43:00,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:00,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-11-02 20:43:00,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:00,114 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2022-11-02 20:43:00,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:43:00,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300878940] [2022-11-02 20:43:00,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300878940] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:43:00,115 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:43:00,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 20:43:00,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561873441] [2022-11-02 20:43:00,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:43:00,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:43:00,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:43:00,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:43:00,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:43:00,118 INFO L87 Difference]: Start difference. First operand 6647 states and 9501 transitions. Second operand has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 4 states have internal predecessors, (64), 3 states have call successors, (21), 7 states have call predecessors, (21), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-02 20:43:10,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:43:10,878 INFO L93 Difference]: Finished difference Result 21588 states and 31145 transitions. [2022-11-02 20:43:10,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-02 20:43:10,879 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 4 states have internal predecessors, (64), 3 states have call successors, (21), 7 states have call predecessors, (21), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 180 [2022-11-02 20:43:10,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:43:10,971 INFO L225 Difference]: With dead ends: 21588 [2022-11-02 20:43:10,972 INFO L226 Difference]: Without dead ends: 14969 [2022-11-02 20:43:11,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=282, Unknown=0, NotChecked=0, Total=420 [2022-11-02 20:43:11,008 INFO L413 NwaCegarLoop]: 2356 mSDtfsCounter, 6961 mSDsluCounter, 5195 mSDsCounter, 0 mSdLazyCounter, 7012 mSolverCounterSat, 5514 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7279 SdHoareTripleChecker+Valid, 7551 SdHoareTripleChecker+Invalid, 12526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5514 IncrementalHoareTripleChecker+Valid, 7012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:43:11,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7279 Valid, 7551 Invalid, 12526 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5514 Valid, 7012 Invalid, 0 Unknown, 0 Unchecked, 9.7s Time] [2022-11-02 20:43:11,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14969 states. [2022-11-02 20:43:11,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14969 to 13270. [2022-11-02 20:43:12,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13270 states, 9189 states have (on average 1.3165741647622158) internal successors, (12098), 9321 states have internal predecessors, (12098), 3431 states have call successors, (3431), 650 states have call predecessors, (3431), 649 states have return successors, (3430), 3386 states have call predecessors, (3430), 3430 states have call successors, (3430) [2022-11-02 20:43:12,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13270 states to 13270 states and 18959 transitions. [2022-11-02 20:43:12,073 INFO L78 Accepts]: Start accepts. Automaton has 13270 states and 18959 transitions. Word has length 180 [2022-11-02 20:43:12,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:43:12,075 INFO L495 AbstractCegarLoop]: Abstraction has 13270 states and 18959 transitions. [2022-11-02 20:43:12,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 4 states have internal predecessors, (64), 3 states have call successors, (21), 7 states have call predecessors, (21), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-02 20:43:12,077 INFO L276 IsEmpty]: Start isEmpty. Operand 13270 states and 18959 transitions. [2022-11-02 20:43:12,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-11-02 20:43:12,086 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:43:12,086 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:43:12,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:43:12,087 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:43:12,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:43:12,087 INFO L85 PathProgramCache]: Analyzing trace with hash 2051492776, now seen corresponding path program 1 times [2022-11-02 20:43:12,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:43:12,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612904036] [2022-11-02 20:43:12,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:43:12,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:43:12,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:12,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:43:12,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:12,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:43:12,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:12,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:43:12,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:12,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-02 20:43:12,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:12,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:43:12,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:12,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:43:12,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:12,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-02 20:43:12,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:12,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:43:12,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:12,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:43:12,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:12,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-02 20:43:12,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:12,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:43:12,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:12,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:43:12,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:12,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-02 20:43:12,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:12,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:43:12,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:12,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:43:12,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:12,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-02 20:43:12,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:12,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:43:12,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:12,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:43:12,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:12,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-02 20:43:12,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:12,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-02 20:43:12,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:12,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-02 20:43:12,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:12,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-02 20:43:12,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:12,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-02 20:43:12,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:12,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-11-02 20:43:12,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:12,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-11-02 20:43:12,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:12,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-11-02 20:43:12,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:12,721 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2022-11-02 20:43:12,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:43:12,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612904036] [2022-11-02 20:43:12,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612904036] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:43:12,722 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:43:12,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 20:43:12,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572566375] [2022-11-02 20:43:12,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:43:12,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:43:12,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:43:12,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:43:12,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:43:12,724 INFO L87 Difference]: Start difference. First operand 13270 states and 18959 transitions. Second operand has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 4 states have internal predecessors, (65), 3 states have call successors, (21), 7 states have call predecessors, (21), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-02 20:43:24,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:43:24,612 INFO L93 Difference]: Finished difference Result 43136 states and 62178 transitions. [2022-11-02 20:43:24,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-02 20:43:24,613 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 4 states have internal predecessors, (65), 3 states have call successors, (21), 7 states have call predecessors, (21), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 181 [2022-11-02 20:43:24,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:43:24,777 INFO L225 Difference]: With dead ends: 43136 [2022-11-02 20:43:24,777 INFO L226 Difference]: Without dead ends: 29894 [2022-11-02 20:43:24,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=282, Unknown=0, NotChecked=0, Total=420 [2022-11-02 20:43:24,851 INFO L413 NwaCegarLoop]: 2352 mSDtfsCounter, 5607 mSDsluCounter, 5892 mSDsCounter, 0 mSdLazyCounter, 7946 mSolverCounterSat, 4258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5924 SdHoareTripleChecker+Valid, 8244 SdHoareTripleChecker+Invalid, 12204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4258 IncrementalHoareTripleChecker+Valid, 7946 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:43:24,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5924 Valid, 8244 Invalid, 12204 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4258 Valid, 7946 Invalid, 0 Unknown, 0 Unchecked, 10.2s Time] [2022-11-02 20:43:24,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29894 states. [2022-11-02 20:43:26,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29894 to 26514. [2022-11-02 20:43:26,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26514 states, 18367 states have (on average 1.316055969946099) internal successors, (24172), 18627 states have internal predecessors, (24172), 6846 states have call successors, (6846), 1301 states have call predecessors, (6846), 1300 states have return successors, (6845), 6761 states have call predecessors, (6845), 6845 states have call successors, (6845) [2022-11-02 20:43:27,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26514 states to 26514 states and 37863 transitions. [2022-11-02 20:43:27,085 INFO L78 Accepts]: Start accepts. Automaton has 26514 states and 37863 transitions. Word has length 181 [2022-11-02 20:43:27,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:43:27,086 INFO L495 AbstractCegarLoop]: Abstraction has 26514 states and 37863 transitions. [2022-11-02 20:43:27,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 4 states have internal predecessors, (65), 3 states have call successors, (21), 7 states have call predecessors, (21), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-02 20:43:27,087 INFO L276 IsEmpty]: Start isEmpty. Operand 26514 states and 37863 transitions. [2022-11-02 20:43:27,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2022-11-02 20:43:27,302 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:43:27,303 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:43:27,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:43:27,303 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:43:27,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:43:27,304 INFO L85 PathProgramCache]: Analyzing trace with hash -162949078, now seen corresponding path program 1 times [2022-11-02 20:43:27,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:43:27,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71291099] [2022-11-02 20:43:27,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:43:27,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:43:27,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:27,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:43:27,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:27,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:43:27,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:27,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:43:27,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:27,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-02 20:43:27,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:27,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:43:27,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:27,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:43:27,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:27,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-02 20:43:27,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:27,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:43:27,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:27,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:43:27,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:27,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-02 20:43:27,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:27,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:43:27,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:27,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:43:27,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:27,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-02 20:43:27,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:27,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:43:27,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:27,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:43:27,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:27,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-02 20:43:27,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:27,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:43:27,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:27,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:43:27,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:27,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-02 20:43:27,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:27,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-02 20:43:27,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:27,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-02 20:43:27,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:27,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-02 20:43:27,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:27,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-11-02 20:43:27,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:27,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-11-02 20:43:27,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:27,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-11-02 20:43:27,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:27,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-11-02 20:43:27,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:27,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-11-02 20:43:27,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:27,832 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2022-11-02 20:43:27,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:43:27,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71291099] [2022-11-02 20:43:27,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71291099] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:43:27,833 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:43:27,833 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:43:27,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317131739] [2022-11-02 20:43:27,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:43:27,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:43:27,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:43:27,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:43:27,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:43:27,835 INFO L87 Difference]: Start difference. First operand 26514 states and 37863 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (22), 6 states have call predecessors, (22), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-02 20:43:39,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:43:39,107 INFO L93 Difference]: Finished difference Result 79590 states and 114274 transitions. [2022-11-02 20:43:39,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 20:43:39,108 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (22), 6 states have call predecessors, (22), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 192 [2022-11-02 20:43:39,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:43:39,372 INFO L225 Difference]: With dead ends: 79590 [2022-11-02 20:43:39,372 INFO L226 Difference]: Without dead ends: 53104 [2022-11-02 20:43:39,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2022-11-02 20:43:39,628 INFO L413 NwaCegarLoop]: 2276 mSDtfsCounter, 4958 mSDsluCounter, 4206 mSDsCounter, 0 mSdLazyCounter, 4973 mSolverCounterSat, 3827 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5198 SdHoareTripleChecker+Valid, 6482 SdHoareTripleChecker+Invalid, 8800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3827 IncrementalHoareTripleChecker+Valid, 4973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:43:39,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5198 Valid, 6482 Invalid, 8800 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3827 Valid, 4973 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2022-11-02 20:43:39,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53104 states. [2022-11-02 20:43:42,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53104 to 47147. [2022-11-02 20:43:42,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47147 states, 32724 states have (on average 1.312981298129813) internal successors, (42966), 33258 states have internal predecessors, (42966), 11987 states have call successors, (11987), 2452 states have call predecessors, (11987), 2435 states have return successors, (11986), 11754 states have call predecessors, (11986), 11986 states have call successors, (11986) [2022-11-02 20:43:43,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47147 states to 47147 states and 66939 transitions. [2022-11-02 20:43:43,347 INFO L78 Accepts]: Start accepts. Automaton has 47147 states and 66939 transitions. Word has length 192 [2022-11-02 20:43:43,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:43:43,348 INFO L495 AbstractCegarLoop]: Abstraction has 47147 states and 66939 transitions. [2022-11-02 20:43:43,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (22), 6 states have call predecessors, (22), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-02 20:43:43,348 INFO L276 IsEmpty]: Start isEmpty. Operand 47147 states and 66939 transitions. [2022-11-02 20:43:43,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2022-11-02 20:43:43,356 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:43:43,356 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 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] [2022-11-02 20:43:43,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 20:43:43,357 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:43:43,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:43:43,358 INFO L85 PathProgramCache]: Analyzing trace with hash 700303173, now seen corresponding path program 1 times [2022-11-02 20:43:43,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:43:43,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595521226] [2022-11-02 20:43:43,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:43:43,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:43:43,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:44,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:43:44,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:44,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:43:44,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:44,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:43:44,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:44,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-02 20:43:44,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:44,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:43:44,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:44,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:43:44,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:44,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-02 20:43:44,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:44,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:43:44,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:44,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:43:44,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:44,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-02 20:43:44,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:44,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:43:44,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:44,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:43:44,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:44,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-02 20:43:44,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:44,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:43:44,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:44,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:43:44,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:44,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-02 20:43:44,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:44,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:43:44,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:44,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:43:44,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:44,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-02 20:43:44,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:44,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-02 20:43:44,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:44,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-02 20:43:44,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:44,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-02 20:43:44,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:44,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-02 20:43:44,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:44,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-11-02 20:43:44,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:44,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-11-02 20:43:44,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:44,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-11-02 20:43:44,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:44,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-11-02 20:43:44,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:44,599 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2022-11-02 20:43:44,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:43:44,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595521226] [2022-11-02 20:43:44,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595521226] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:43:44,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725897026] [2022-11-02 20:43:44,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:43:44,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:43:44,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4e6da86-3232-42a8-9fb4-f9db4298927f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:43:44,607 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4e6da86-3232-42a8-9fb4-f9db4298927f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:43:44,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4e6da86-3232-42a8-9fb4-f9db4298927f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 20:43:45,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:45,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 2477 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-02 20:43:45,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:43:45,943 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2022-11-02 20:43:45,944 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:43:45,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1725897026] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:43:45,944 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:43:45,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 17 [2022-11-02 20:43:45,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539438344] [2022-11-02 20:43:45,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:43:45,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:43:45,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:43:45,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:43:45,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:43:45,947 INFO L87 Difference]: Start difference. First operand 47147 states and 66939 transitions. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-02 20:43:50,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:43:50,148 INFO L93 Difference]: Finished difference Result 118105 states and 167645 transitions. [2022-11-02 20:43:50,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 20:43:50,149 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) Word has length 191 [2022-11-02 20:43:50,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:43:50,816 INFO L225 Difference]: With dead ends: 118105 [2022-11-02 20:43:50,816 INFO L226 Difference]: Without dead ends: 70986 [2022-11-02 20:43:51,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=83, Invalid=469, Unknown=0, NotChecked=0, Total=552 [2022-11-02 20:43:51,020 INFO L413 NwaCegarLoop]: 3077 mSDtfsCounter, 2429 mSDsluCounter, 14669 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2433 SdHoareTripleChecker+Valid, 17746 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:43:51,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2433 Valid, 17746 Invalid, 83 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:43:51,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70986 states. [2022-11-02 20:43:55,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70986 to 70691. [2022-11-02 20:43:55,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70691 states, 49082 states have (on average 1.313414286296402) internal successors, (64465), 49902 states have internal predecessors, (64465), 17947 states have call successors, (17947), 3670 states have call predecessors, (17947), 3661 states have return successors, (17986), 17594 states have call predecessors, (17986), 17946 states have call successors, (17986) [2022-11-02 20:43:56,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70691 states to 70691 states and 100398 transitions. [2022-11-02 20:43:56,072 INFO L78 Accepts]: Start accepts. Automaton has 70691 states and 100398 transitions. Word has length 191 [2022-11-02 20:43:56,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:43:56,073 INFO L495 AbstractCegarLoop]: Abstraction has 70691 states and 100398 transitions. [2022-11-02 20:43:56,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-02 20:43:56,073 INFO L276 IsEmpty]: Start isEmpty. Operand 70691 states and 100398 transitions. [2022-11-02 20:43:56,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2022-11-02 20:43:56,084 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:43:56,085 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 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] [2022-11-02 20:43:56,139 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4e6da86-3232-42a8-9fb4-f9db4298927f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:43:56,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4e6da86-3232-42a8-9fb4-f9db4298927f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-02 20:43:56,295 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:43:56,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:43:56,296 INFO L85 PathProgramCache]: Analyzing trace with hash -519166975, now seen corresponding path program 1 times [2022-11-02 20:43:56,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:43:56,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148779512] [2022-11-02 20:43:56,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:43:56,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:43:56,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:57,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:43:57,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:57,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:43:57,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:57,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:43:57,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:57,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-02 20:43:57,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:57,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:43:57,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:57,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:43:57,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:57,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-02 20:43:57,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:57,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:43:57,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:57,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:43:57,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:57,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-02 20:43:57,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:57,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:43:57,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:57,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:43:57,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:57,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-02 20:43:57,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:57,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:43:57,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:57,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:43:57,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:57,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-02 20:43:57,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:57,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:43:57,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:57,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:43:57,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:57,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-02 20:43:57,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:57,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-02 20:43:57,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:57,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-02 20:43:57,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:57,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-02 20:43:57,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:57,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-11-02 20:43:57,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:57,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-11-02 20:43:57,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:57,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-11-02 20:43:57,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:57,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-11-02 20:43:57,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:57,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-11-02 20:43:57,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:57,832 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2022-11-02 20:43:57,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:43:57,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148779512] [2022-11-02 20:43:57,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148779512] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:43:57,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [657082496] [2022-11-02 20:43:57,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:43:57,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:43:57,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4e6da86-3232-42a8-9fb4-f9db4298927f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:43:57,859 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4e6da86-3232-42a8-9fb4-f9db4298927f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:43:57,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4e6da86-3232-42a8-9fb4-f9db4298927f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 20:43:58,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:58,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 2479 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-02 20:43:58,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:43:59,069 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2022-11-02 20:43:59,069 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:43:59,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [657082496] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:43:59,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:43:59,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [13] total 18 [2022-11-02 20:43:59,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573553997] [2022-11-02 20:43:59,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:43:59,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:43:59,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:43:59,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:43:59,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:43:59,073 INFO L87 Difference]: Start difference. First operand 70691 states and 100398 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-02 20:44:03,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:44:03,520 INFO L93 Difference]: Finished difference Result 165299 states and 234655 transitions. [2022-11-02 20:44:03,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 20:44:03,521 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) Word has length 192 [2022-11-02 20:44:03,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:44:04,027 INFO L225 Difference]: With dead ends: 165299 [2022-11-02 20:44:04,027 INFO L226 Difference]: Without dead ends: 94636 [2022-11-02 20:44:04,282 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=85, Invalid=515, Unknown=0, NotChecked=0, Total=600 [2022-11-02 20:44:04,283 INFO L413 NwaCegarLoop]: 3127 mSDtfsCounter, 2429 mSDsluCounter, 14857 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2433 SdHoareTripleChecker+Valid, 17984 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:44:04,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2433 Valid, 17984 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:44:04,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94636 states. [2022-11-02 20:44:09,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94636 to 94299. [2022-11-02 20:44:09,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94299 states, 65480 states have (on average 1.313439218081857) internal successors, (86004), 66618 states have internal predecessors, (86004), 23907 states have call successors, (23907), 4888 states have call predecessors, (23907), 4911 states have return successors, (24010), 23426 states have call predecessors, (24010), 23906 states have call successors, (24010) [2022-11-02 20:44:10,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94299 states to 94299 states and 133921 transitions. [2022-11-02 20:44:10,022 INFO L78 Accepts]: Start accepts. Automaton has 94299 states and 133921 transitions. Word has length 192 [2022-11-02 20:44:10,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:44:10,023 INFO L495 AbstractCegarLoop]: Abstraction has 94299 states and 133921 transitions. [2022-11-02 20:44:10,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-02 20:44:10,024 INFO L276 IsEmpty]: Start isEmpty. Operand 94299 states and 133921 transitions. [2022-11-02 20:44:10,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-11-02 20:44:10,039 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:10,040 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 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] [2022-11-02 20:44:10,096 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4e6da86-3232-42a8-9fb4-f9db4298927f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:44:10,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4e6da86-3232-42a8-9fb4-f9db4298927f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:44:10,255 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:44:10,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:10,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1521526796, now seen corresponding path program 1 times [2022-11-02 20:44:10,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:10,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206539181] [2022-11-02 20:44:10,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:10,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:10,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:11,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:44:11,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:11,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:44:11,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:11,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:44:11,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:11,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-02 20:44:11,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:11,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:44:11,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:11,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:44:11,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:11,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-02 20:44:11,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:11,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:44:11,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:11,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:44:11,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:11,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-02 20:44:11,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:11,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:44:11,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:11,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:44:11,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:11,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-02 20:44:11,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:11,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:44:11,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:11,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:44:11,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:11,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-02 20:44:11,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:11,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:44:11,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:11,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:44:11,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:11,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-02 20:44:11,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:11,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-02 20:44:11,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:11,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-02 20:44:11,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:11,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-02 20:44:11,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:11,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-11-02 20:44:11,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:11,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-11-02 20:44:11,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:11,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-11-02 20:44:11,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:11,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-11-02 20:44:11,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:11,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-11-02 20:44:11,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:11,595 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2022-11-02 20:44:11,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:44:11,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206539181] [2022-11-02 20:44:11,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206539181] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:44:11,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1459237908] [2022-11-02 20:44:11,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:11,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:44:11,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4e6da86-3232-42a8-9fb4-f9db4298927f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:44:11,598 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4e6da86-3232-42a8-9fb4-f9db4298927f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:44:11,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4e6da86-3232-42a8-9fb4-f9db4298927f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 20:44:13,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:13,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 2481 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-02 20:44:13,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:44:13,291 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2022-11-02 20:44:13,291 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:44:13,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1459237908] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:44:13,292 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:44:13,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [13] total 18 [2022-11-02 20:44:13,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859261435] [2022-11-02 20:44:13,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:44:13,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:44:13,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:44:13,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:44:13,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:44:13,294 INFO L87 Difference]: Start difference. First operand 94299 states and 133921 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17)