./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--wireless--rtl818x--rtl8180--rtl818x_pci.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_721c55a9-ea14-446a-aa14-a72578e9f584/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_721c55a9-ea14-446a-aa14-a72578e9f584/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_721c55a9-ea14-446a-aa14-a72578e9f584/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_721c55a9-ea14-446a-aa14-a72578e9f584/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--wireless--rtl818x--rtl8180--rtl818x_pci.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_721c55a9-ea14-446a-aa14-a72578e9f584/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_721c55a9-ea14-446a-aa14-a72578e9f584/bin/uautomizer-ug76WZFUDN --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 73e11d79da89f19153d89e853a8d4a3607f25d95ae579da9c148a59839e48ce3 --- 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-6b4ec56 [2022-11-20 09:27:30,216 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 09:27:30,218 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 09:27:30,266 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 09:27:30,266 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 09:27:30,268 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 09:27:30,270 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 09:27:30,272 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 09:27:30,274 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 09:27:30,275 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 09:27:30,277 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 09:27:30,278 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 09:27:30,279 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 09:27:30,280 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 09:27:30,281 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 09:27:30,283 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 09:27:30,289 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 09:27:30,294 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 09:27:30,296 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 09:27:30,300 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 09:27:30,310 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 09:27:30,312 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 09:27:30,313 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 09:27:30,314 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 09:27:30,319 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 09:27:30,319 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 09:27:30,320 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 09:27:30,321 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 09:27:30,322 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 09:27:30,323 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 09:27:30,324 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 09:27:30,325 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 09:27:30,326 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 09:27:30,328 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 09:27:30,329 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 09:27:30,329 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 09:27:30,330 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 09:27:30,331 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 09:27:30,331 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 09:27:30,333 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 09:27:30,334 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 09:27:30,335 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_721c55a9-ea14-446a-aa14-a72578e9f584/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-20 09:27:30,362 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 09:27:30,362 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 09:27:30,363 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 09:27:30,363 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 09:27:30,364 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 09:27:30,364 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 09:27:30,365 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 09:27:30,366 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 09:27:30,366 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 09:27:30,367 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 09:27:30,367 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 09:27:30,367 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 09:27:30,368 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 09:27:30,368 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 09:27:30,368 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 09:27:30,369 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 09:27:30,369 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 09:27:30,369 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 09:27:30,370 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 09:27:30,370 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 09:27:30,371 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 09:27:30,371 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 09:27:30,371 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 09:27:30,372 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 09:27:30,372 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 09:27:30,372 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 09:27:30,373 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 09:27:30,373 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 09:27:30,373 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 09:27:30,374 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 09:27:30,374 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_721c55a9-ea14-446a-aa14-a72578e9f584/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_721c55a9-ea14-446a-aa14-a72578e9f584/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 73e11d79da89f19153d89e853a8d4a3607f25d95ae579da9c148a59839e48ce3 [2022-11-20 09:27:30,656 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 09:27:30,698 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 09:27:30,702 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 09:27:30,704 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 09:27:30,704 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 09:27:30,705 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_721c55a9-ea14-446a-aa14-a72578e9f584/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--wireless--rtl818x--rtl8180--rtl818x_pci.ko-entry_point.cil.out.i [2022-11-20 09:27:33,860 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 09:27:34,515 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 09:27:34,516 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_721c55a9-ea14-446a-aa14-a72578e9f584/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--wireless--rtl818x--rtl8180--rtl818x_pci.ko-entry_point.cil.out.i [2022-11-20 09:27:34,579 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_721c55a9-ea14-446a-aa14-a72578e9f584/bin/uautomizer-ug76WZFUDN/data/c0711aee2/198d15d9ebd84f5297dfa228596d3ccd/FLAG1da831718 [2022-11-20 09:27:34,596 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_721c55a9-ea14-446a-aa14-a72578e9f584/bin/uautomizer-ug76WZFUDN/data/c0711aee2/198d15d9ebd84f5297dfa228596d3ccd [2022-11-20 09:27:34,603 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 09:27:34,605 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 09:27:34,609 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 09:27:34,609 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 09:27:34,613 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 09:27:34,614 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:27:34" (1/1) ... [2022-11-20 09:27:34,615 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@682813a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:34, skipping insertion in model container [2022-11-20 09:27:34,615 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:27:34" (1/1) ... [2022-11-20 09:27:34,623 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 09:27:34,821 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 09:27:38,647 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_721c55a9-ea14-446a-aa14-a72578e9f584/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--wireless--rtl818x--rtl8180--rtl818x_pci.ko-entry_point.cil.out.i[468644,468657] [2022-11-20 09:27:38,749 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:27:38,832 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 09:27:39,337 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_721c55a9-ea14-446a-aa14-a72578e9f584/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--wireless--rtl818x--rtl8180--rtl818x_pci.ko-entry_point.cil.out.i[468644,468657] [2022-11-20 09:27:39,345 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:27:39,575 INFO L208 MainTranslator]: Completed translation [2022-11-20 09:27:39,576 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:39 WrapperNode [2022-11-20 09:27:39,577 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 09:27:39,579 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 09:27:39,580 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 09:27:39,580 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 09:27:39,587 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:39" (1/1) ... [2022-11-20 09:27:39,702 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:39" (1/1) ... [2022-11-20 09:27:40,013 INFO L138 Inliner]: procedures = 440, calls = 4554, calls flagged for inlining = 181, calls inlined = 178, statements flattened = 8247 [2022-11-20 09:27:40,014 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 09:27:40,015 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 09:27:40,015 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 09:27:40,015 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 09:27:40,025 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:39" (1/1) ... [2022-11-20 09:27:40,026 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:39" (1/1) ... [2022-11-20 09:27:40,099 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:39" (1/1) ... [2022-11-20 09:27:40,100 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:39" (1/1) ... [2022-11-20 09:27:40,400 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:39" (1/1) ... [2022-11-20 09:27:40,443 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:39" (1/1) ... [2022-11-20 09:27:40,485 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:39" (1/1) ... [2022-11-20 09:27:40,518 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:39" (1/1) ... [2022-11-20 09:27:40,573 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 09:27:40,575 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 09:27:40,575 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 09:27:40,575 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 09:27:40,576 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:39" (1/1) ... [2022-11-20 09:27:40,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 09:27:40,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_721c55a9-ea14-446a-aa14-a72578e9f584/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:27:40,617 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_721c55a9-ea14-446a-aa14-a72578e9f584/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 09:27:40,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_721c55a9-ea14-446a-aa14-a72578e9f584/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 09:27:40,674 INFO L130 BoogieDeclarations]: Found specification of procedure rtl818x_ioread8 [2022-11-20 09:27:40,675 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl818x_ioread8 [2022-11-20 09:27:40,675 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_frequency_to_channel [2022-11-20 09:27:40,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_frequency_to_channel [2022-11-20 09:27:40,675 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_free_tx_ring [2022-11-20 09:27:40,675 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_free_tx_ring [2022-11-20 09:27:40,676 INFO L130 BoogieDeclarations]: Found specification of procedure rtl818x_iowrite8 [2022-11-20 09:27:40,676 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl818x_iowrite8 [2022-11-20 09:27:40,677 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-20 09:27:40,677 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-20 09:27:40,677 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-20 09:27:40,677 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-20 09:27:40,677 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2022-11-20 09:27:40,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2022-11-20 09:27:40,678 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-20 09:27:40,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-20 09:27:40,678 INFO L130 BoogieDeclarations]: Found specification of procedure max2820_rf_init [2022-11-20 09:27:40,678 INFO L138 BoogieDeclarations]: Found implementation of procedure max2820_rf_init [2022-11-20 09:27:40,678 INFO L130 BoogieDeclarations]: Found specification of procedure sa2400_rf_calc_rssi [2022-11-20 09:27:40,678 INFO L138 BoogieDeclarations]: Found implementation of procedure sa2400_rf_calc_rssi [2022-11-20 09:27:40,679 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8187se_rf_writereg [2022-11-20 09:27:40,679 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8187se_rf_writereg [2022-11-20 09:27:40,679 INFO L130 BoogieDeclarations]: Found specification of procedure usleep_range [2022-11-20 09:27:40,679 INFO L138 BoogieDeclarations]: Found implementation of procedure usleep_range [2022-11-20 09:27:40,679 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_generic_frame_duration [2022-11-20 09:27:40,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_generic_frame_duration [2022-11-20 09:27:40,680 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_3 [2022-11-20 09:27:40,680 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_3 [2022-11-20 09:27:40,680 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-20 09:27:40,680 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-20 09:27:40,680 INFO L130 BoogieDeclarations]: Found specification of procedure fls [2022-11-20 09:27:40,680 INFO L138 BoogieDeclarations]: Found implementation of procedure fls [2022-11-20 09:27:40,681 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2022-11-20 09:27:40,682 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2022-11-20 09:27:40,682 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-20 09:27:40,682 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-20 09:27:40,682 INFO L130 BoogieDeclarations]: Found specification of procedure sa2400_write_phy_antenna [2022-11-20 09:27:40,683 INFO L138 BoogieDeclarations]: Found implementation of procedure sa2400_write_phy_antenna [2022-11-20 09:27:40,683 INFO L130 BoogieDeclarations]: Found specification of procedure sa2400_rf_init [2022-11-20 09:27:40,683 INFO L138 BoogieDeclarations]: Found implementation of procedure sa2400_rf_init [2022-11-20 09:27:40,684 INFO L130 BoogieDeclarations]: Found specification of procedure rtl818x_ioread32 [2022-11-20 09:27:40,684 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl818x_ioread32 [2022-11-20 09:27:40,684 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_free_rx_ring [2022-11-20 09:27:40,684 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_free_rx_ring [2022-11-20 09:27:40,684 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_bss_info_changed [2022-11-20 09:27:40,685 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_bss_info_changed [2022-11-20 09:27:40,685 INFO L130 BoogieDeclarations]: Found specification of procedure grf5101_rf_calc_rssi [2022-11-20 09:27:40,685 INFO L138 BoogieDeclarations]: Found implementation of procedure grf5101_rf_calc_rssi [2022-11-20 09:27:40,685 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-20 09:27:40,685 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-20 09:27:40,685 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2022-11-20 09:27:40,686 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2022-11-20 09:27:40,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 09:27:40,686 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225z2_rf_set_tx_power [2022-11-20 09:27:40,686 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225z2_rf_set_tx_power [2022-11-20 09:27:40,686 INFO L130 BoogieDeclarations]: Found specification of procedure rtl818x_ioread16 [2022-11-20 09:27:40,686 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl818x_ioread16 [2022-11-20 09:27:40,687 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-20 09:27:40,687 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-20 09:27:40,687 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_set_anaparam [2022-11-20 09:27:40,688 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_set_anaparam [2022-11-20 09:27:40,688 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-20 09:27:40,688 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_get_tx_rate [2022-11-20 09:27:40,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_get_tx_rate [2022-11-20 09:27:40,688 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-20 09:27:40,689 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-20 09:27:40,689 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-20 09:27:40,689 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-20 09:27:40,689 INFO L130 BoogieDeclarations]: Found specification of procedure max2820_rf_stop [2022-11-20 09:27:40,689 INFO L138 BoogieDeclarations]: Found implementation of procedure max2820_rf_stop [2022-11-20 09:27:40,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-20 09:27:40,689 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_rf_stop [2022-11-20 09:27:40,690 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_rf_stop [2022-11-20 09:27:40,690 INFO L130 BoogieDeclarations]: Found specification of procedure pci_zalloc_consistent [2022-11-20 09:27:40,690 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_zalloc_consistent [2022-11-20 09:27:40,690 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 09:27:40,690 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_resume_early_10 [2022-11-20 09:27:40,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_resume_early_10 [2022-11-20 09:27:40,691 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-20 09:27:40,691 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-20 09:27:40,691 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_get_tsf [2022-11-20 09:27:40,691 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_get_tsf [2022-11-20 09:27:40,692 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-20 09:27:40,692 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-20 09:27:40,692 INFO L130 BoogieDeclarations]: Found specification of procedure reg_check_2 [2022-11-20 09:27:40,692 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_check_2 [2022-11-20 09:27:40,693 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-11-20 09:27:40,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-11-20 09:27:40,694 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iomap [2022-11-20 09:27:40,694 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iomap [2022-11-20 09:27:40,694 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_add_interface [2022-11-20 09:27:40,694 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_add_interface [2022-11-20 09:27:40,694 INFO L130 BoogieDeclarations]: Found specification of procedure max2820_write_phy_antenna [2022-11-20 09:27:40,694 INFO L138 BoogieDeclarations]: Found implementation of procedure max2820_write_phy_antenna [2022-11-20 09:27:40,695 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2022-11-20 09:27:40,695 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2022-11-20 09:27:40,695 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-20 09:27:40,695 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-20 09:27:40,695 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_rf_set_channel [2022-11-20 09:27:40,696 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_rf_set_channel [2022-11-20 09:27:40,696 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_rf_set_tx_power [2022-11-20 09:27:40,696 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_rf_set_tx_power [2022-11-20 09:27:40,697 INFO L130 BoogieDeclarations]: Found specification of procedure sa2400_rf_set_channel [2022-11-20 09:27:40,697 INFO L138 BoogieDeclarations]: Found implementation of procedure sa2400_rf_set_channel [2022-11-20 09:27:40,697 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-20 09:27:40,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-20 09:27:40,697 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_dequeue [2022-11-20 09:27:40,698 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_dequeue [2022-11-20 09:27:40,698 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 09:27:40,698 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 09:27:40,698 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2022-11-20 09:27:40,699 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2022-11-20 09:27:40,699 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_free_hw [2022-11-20 09:27:40,699 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_free_hw [2022-11-20 09:27:40,699 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_write_phy_cck [2022-11-20 09:27:40,699 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_write_phy_cck [2022-11-20 09:27:40,699 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-20 09:27:40,700 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-20 09:27:40,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 09:27:40,704 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-20 09:27:40,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-20 09:27:40,705 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_shutdown_10 [2022-11-20 09:27:40,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_shutdown_10 [2022-11-20 09:27:40,706 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_get_rts_cts_rate [2022-11-20 09:27:40,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_get_rts_cts_rate [2022-11-20 09:27:40,708 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225se_rf_init [2022-11-20 09:27:40,708 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225se_rf_init [2022-11-20 09:27:40,709 INFO L130 BoogieDeclarations]: Found specification of procedure grf5101_rf_set_channel [2022-11-20 09:27:40,714 INFO L138 BoogieDeclarations]: Found implementation of procedure grf5101_rf_set_channel [2022-11-20 09:27:40,715 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_resume [2022-11-20 09:27:40,715 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_resume [2022-11-20 09:27:40,715 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_set_anaparam2 [2022-11-20 09:27:40,715 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_set_anaparam2 [2022-11-20 09:27:40,715 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_write_phy_ofdm [2022-11-20 09:27:40,715 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_write_phy_ofdm [2022-11-20 09:27:40,716 INFO L130 BoogieDeclarations]: Found specification of procedure max2820_rf_calc_rssi [2022-11-20 09:27:40,716 INFO L138 BoogieDeclarations]: Found implementation of procedure max2820_rf_calc_rssi [2022-11-20 09:27:40,717 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_write_phy [2022-11-20 09:27:40,717 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_write_phy [2022-11-20 09:27:40,717 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_conf_basic_rates [2022-11-20 09:27:40,717 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_conf_basic_rates [2022-11-20 09:27:40,717 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tail_pointer [2022-11-20 09:27:40,717 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tail_pointer [2022-11-20 09:27:40,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 09:27:40,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 09:27:40,718 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-20 09:27:40,718 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-20 09:27:40,718 INFO L130 BoogieDeclarations]: Found specification of procedure write_sa2400 [2022-11-20 09:27:40,718 INFO L138 BoogieDeclarations]: Found implementation of procedure write_sa2400 [2022-11-20 09:27:40,718 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-20 09:27:40,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-20 09:27:40,719 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_conf_tx [2022-11-20 09:27:40,719 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_conf_tx [2022-11-20 09:27:40,719 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-20 09:27:40,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-20 09:27:40,719 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_stop [2022-11-20 09:27:40,719 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_stop [2022-11-20 09:27:40,720 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2022-11-20 09:27:40,720 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2022-11-20 09:27:40,720 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_disconnect_5 [2022-11-20 09:27:40,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_disconnect_5 [2022-11-20 09:27:40,720 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_disconnect_4 [2022-11-20 09:27:40,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_disconnect_4 [2022-11-20 09:27:40,721 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_disconnect_9 [2022-11-20 09:27:40,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_disconnect_9 [2022-11-20 09:27:40,721 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_disconnect_8 [2022-11-20 09:27:40,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_disconnect_8 [2022-11-20 09:27:40,722 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_rf_init [2022-11-20 09:27:40,722 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_rf_init [2022-11-20 09:27:40,722 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_disconnect_7 [2022-11-20 09:27:40,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_disconnect_7 [2022-11-20 09:27:40,722 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_disconnect_6 [2022-11-20 09:27:40,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_disconnect_6 [2022-11-20 09:27:40,723 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225z2_rf_init [2022-11-20 09:27:40,723 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225z2_rf_init [2022-11-20 09:27:40,723 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_remove [2022-11-20 09:27:40,723 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_remove [2022-11-20 09:27:40,724 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225se_rf_set_channel [2022-11-20 09:27:40,724 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225se_rf_set_channel [2022-11-20 09:27:40,724 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-20 09:27:40,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-20 09:27:40,724 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work_on [2022-11-20 09:27:40,724 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work_on [2022-11-20 09:27:40,724 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2022-11-20 09:27:40,725 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2022-11-20 09:27:40,725 INFO L130 BoogieDeclarations]: Found specification of procedure sa2400_rf_stop [2022-11-20 09:27:40,725 INFO L138 BoogieDeclarations]: Found implementation of procedure sa2400_rf_stop [2022-11-20 09:27:40,725 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-20 09:27:40,725 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-20 09:27:40,725 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_irq_2 [2022-11-20 09:27:40,725 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_irq_2 [2022-11-20 09:27:40,726 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-20 09:27:40,726 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-20 09:27:40,726 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_int_disable [2022-11-20 09:27:40,726 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_int_disable [2022-11-20 09:27:40,726 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_write [2022-11-20 09:27:40,726 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_write [2022-11-20 09:27:40,726 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 09:27:40,727 INFO L130 BoogieDeclarations]: Found specification of procedure grf5101_write_phy_antenna [2022-11-20 09:27:40,727 INFO L138 BoogieDeclarations]: Found implementation of procedure grf5101_write_phy_antenna [2022-11-20 09:27:40,727 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 09:27:40,727 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225se_rf_stop [2022-11-20 09:27:40,727 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225se_rf_stop [2022-11-20 09:27:40,727 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2022-11-20 09:27:40,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2022-11-20 09:27:40,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-20 09:27:40,728 INFO L130 BoogieDeclarations]: Found specification of procedure grf5101_rf_init [2022-11-20 09:27:40,728 INFO L138 BoogieDeclarations]: Found implementation of procedure grf5101_rf_init [2022-11-20 09:27:40,728 INFO L130 BoogieDeclarations]: Found specification of procedure kfree_skb [2022-11-20 09:27:40,728 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree_skb [2022-11-20 09:27:40,728 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2022-11-20 09:27:40,728 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2022-11-20 09:27:40,729 INFO L130 BoogieDeclarations]: Found specification of procedure _ieee80211_hw_set [2022-11-20 09:27:40,729 INFO L138 BoogieDeclarations]: Found implementation of procedure _ieee80211_hw_set [2022-11-20 09:27:40,729 INFO L130 BoogieDeclarations]: Found specification of procedure write_max2820 [2022-11-20 09:27:40,729 INFO L138 BoogieDeclarations]: Found implementation of procedure write_max2820 [2022-11-20 09:27:40,729 INFO L130 BoogieDeclarations]: Found specification of procedure write_grf5101 [2022-11-20 09:27:40,729 INFO L138 BoogieDeclarations]: Found implementation of procedure write_grf5101 [2022-11-20 09:27:40,729 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8187se_rf_readreg [2022-11-20 09:27:40,730 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8187se_rf_readreg [2022-11-20 09:27:40,730 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_beacon_work [2022-11-20 09:27:40,730 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_beacon_work [2022-11-20 09:27:40,730 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_remove_interface [2022-11-20 09:27:40,730 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_remove_interface [2022-11-20 09:27:40,730 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_mapping_error [2022-11-20 09:27:40,730 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_mapping_error [2022-11-20 09:27:40,731 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_read [2022-11-20 09:27:40,731 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_read [2022-11-20 09:27:40,731 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_handle_rx [2022-11-20 09:27:40,731 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_handle_rx [2022-11-20 09:27:40,731 INFO L130 BoogieDeclarations]: Found specification of procedure max2820_rf_set_channel [2022-11-20 09:27:40,731 INFO L138 BoogieDeclarations]: Found implementation of procedure max2820_rf_set_channel [2022-11-20 09:27:40,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 09:27:40,732 INFO L130 BoogieDeclarations]: Found specification of procedure eeprom_93cx6_read [2022-11-20 09:27:40,732 INFO L138 BoogieDeclarations]: Found implementation of procedure eeprom_93cx6_read [2022-11-20 09:27:40,732 INFO L130 BoogieDeclarations]: Found specification of procedure dev_alloc_skb [2022-11-20 09:27:40,732 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_alloc_skb [2022-11-20 09:27:40,732 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-20 09:27:40,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-20 09:27:40,732 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_handle_tx [2022-11-20 09:27:40,733 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_handle_tx [2022-11-20 09:27:40,733 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_configure_filter [2022-11-20 09:27:40,733 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_configure_filter [2022-11-20 09:27:40,733 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8187se_conf_ac_parm [2022-11-20 09:27:40,733 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8187se_conf_ac_parm [2022-11-20 09:27:40,734 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-20 09:27:40,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-20 09:27:40,738 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2022-11-20 09:27:40,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2022-11-20 09:27:40,738 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_2 [2022-11-20 09:27:40,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_2 [2022-11-20 09:27:40,739 INFO L130 BoogieDeclarations]: Found specification of procedure grf5101_rf_stop [2022-11-20 09:27:40,739 INFO L138 BoogieDeclarations]: Found implementation of procedure grf5101_rf_stop [2022-11-20 09:27:40,739 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_len [2022-11-20 09:27:40,739 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_len [2022-11-20 09:27:40,740 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_prepare_multicast [2022-11-20 09:27:40,741 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_prepare_multicast [2022-11-20 09:27:40,741 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2022-11-20 09:27:40,742 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2022-11-20 09:27:40,742 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2022-11-20 09:27:40,742 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2022-11-20 09:27:40,742 INFO L130 BoogieDeclarations]: Found specification of procedure rtl818x_iowrite32 [2022-11-20 09:27:40,742 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl818x_iowrite32 [2022-11-20 09:27:40,742 INFO L130 BoogieDeclarations]: Found specification of procedure eeprom_93cx6_multiread [2022-11-20 09:27:40,742 INFO L138 BoogieDeclarations]: Found implementation of procedure eeprom_93cx6_multiread [2022-11-20 09:27:40,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 09:27:40,743 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_config [2022-11-20 09:27:40,743 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_config [2022-11-20 09:27:40,743 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8187se_three_wire_io [2022-11-20 09:27:40,743 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8187se_three_wire_io [2022-11-20 09:27:40,743 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_tx [2022-11-20 09:27:40,743 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_tx [2022-11-20 09:27:40,743 INFO L130 BoogieDeclarations]: Found specification of procedure rtl818x_iowrite16 [2022-11-20 09:27:40,744 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl818x_iowrite16 [2022-11-20 09:27:40,744 INFO L130 BoogieDeclarations]: Found specification of procedure IEEE80211_SKB_CB [2022-11-20 09:27:40,744 INFO L138 BoogieDeclarations]: Found implementation of procedure IEEE80211_SKB_CB [2022-11-20 09:27:42,238 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 09:27:42,247 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 09:27:42,992 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-20 09:27:54,495 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 09:27:54,530 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 09:27:54,530 INFO L300 CfgBuilder]: Removed 78 assume(true) statements. [2022-11-20 09:27:54,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:27:54 BoogieIcfgContainer [2022-11-20 09:27:54,539 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 09:27:54,541 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 09:27:54,541 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 09:27:54,545 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 09:27:54,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:27:34" (1/3) ... [2022-11-20 09:27:54,548 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bd9029d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:27:54, skipping insertion in model container [2022-11-20 09:27:54,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:39" (2/3) ... [2022-11-20 09:27:54,549 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bd9029d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:27:54, skipping insertion in model container [2022-11-20 09:27:54,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:27:54" (3/3) ... [2022-11-20 09:27:54,555 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--wireless--rtl818x--rtl8180--rtl818x_pci.ko-entry_point.cil.out.i [2022-11-20 09:27:54,579 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 09:27:54,579 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 09:27:54,735 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 09:27:54,746 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;@2f4b30a6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 09:27:54,746 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 09:27:54,767 INFO L276 IsEmpty]: Start isEmpty. Operand has 3719 states, 2129 states have (on average 1.3100046970408643) internal successors, (2789), 2284 states have internal predecessors, (2789), 1537 states have call successors, (1537), 130 states have call predecessors, (1537), 129 states have return successors, (1522), 1485 states have call predecessors, (1522), 1522 states have call successors, (1522) [2022-11-20 09:27:54,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2022-11-20 09:27:54,812 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:27:54,813 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:27:54,814 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:27:54,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:54,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1390256745, now seen corresponding path program 1 times [2022-11-20 09:27:54,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:54,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133815644] [2022-11-20 09:27:54,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:54,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:55,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:55,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 09:27:55,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:55,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:27:56,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:56,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:27:56,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:56,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 09:27:56,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:56,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:27:56,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:56,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:27:56,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:56,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 09:27:56,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:56,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:27:56,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:56,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:27:56,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:56,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-20 09:27:56,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:56,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:27:56,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:56,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:27:56,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:56,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-20 09:27:56,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:56,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:27:56,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:56,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:27:56,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:56,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-20 09:27:56,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:56,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:27:56,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:56,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:27:56,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:56,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-20 09:27:56,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:56,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:27:56,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:56,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:27:56,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:56,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-20 09:27:56,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:56,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:27:56,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:56,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:27:56,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:56,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-20 09:27:56,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:56,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:27:56,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:56,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:27:56,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:56,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-11-20 09:27:56,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:56,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:27:56,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:56,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:27:56,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:56,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-11-20 09:27:56,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:56,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:27:56,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:56,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:27:56,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:56,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-11-20 09:27:56,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:56,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:27:56,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:56,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:27:56,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:56,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-11-20 09:27:56,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:56,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:27:56,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:56,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-11-20 09:27:56,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:56,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:27:56,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:56,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2022-11-20 09:27:56,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:57,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:27:57,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:57,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-11-20 09:27:57,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:57,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:27:57,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:57,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-11-20 09:27:57,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:57,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:27:57,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:57,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-11-20 09:27:57,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:57,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:27:57,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:57,117 INFO L134 CoverageAnalysis]: Checked inductivity of 1059 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1059 trivial. 0 not checked. [2022-11-20 09:27:57,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:57,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133815644] [2022-11-20 09:27:57,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133815644] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:57,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:57,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 09:27:57,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263495215] [2022-11-20 09:27:57,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:57,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 09:27:57,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:57,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 09:27:57,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 09:27:57,176 INFO L87 Difference]: Start difference. First operand has 3719 states, 2129 states have (on average 1.3100046970408643) internal successors, (2789), 2284 states have internal predecessors, (2789), 1537 states have call successors, (1537), 130 states have call predecessors, (1537), 129 states have return successors, (1522), 1485 states have call predecessors, (1522), 1522 states have call successors, (1522) Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (24), 5 states have call predecessors, (24), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-20 09:28:04,226 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:28:06,234 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:28:08,186 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:28:09,281 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:28:12,706 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:28:13,774 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:28:22,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:28:22,524 INFO L93 Difference]: Finished difference Result 7405 states and 11716 transitions. [2022-11-20 09:28:22,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 09:28:22,527 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (24), 5 states have call predecessors, (24), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 277 [2022-11-20 09:28:22,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:28:22,593 INFO L225 Difference]: With dead ends: 7405 [2022-11-20 09:28:22,593 INFO L226 Difference]: Without dead ends: 3663 [2022-11-20 09:28:22,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-20 09:28:22,638 INFO L413 NwaCegarLoop]: 2928 mSDtfsCounter, 2256 mSDsluCounter, 2755 mSDsCounter, 0 mSdLazyCounter, 4227 mSolverCounterSat, 4653 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2267 SdHoareTripleChecker+Valid, 5683 SdHoareTripleChecker+Invalid, 8882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 4653 IncrementalHoareTripleChecker+Valid, 4227 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.3s IncrementalHoareTripleChecker+Time [2022-11-20 09:28:22,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2267 Valid, 5683 Invalid, 8882 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [4653 Valid, 4227 Invalid, 2 Unknown, 0 Unchecked, 24.3s Time] [2022-11-20 09:28:22,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3663 states. [2022-11-20 09:28:23,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3663 to 3457. [2022-11-20 09:28:23,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3457 states, 1884 states have (on average 1.2977707006369428) internal successors, (2445), 1953 states have internal predecessors, (2445), 1444 states have call successors, (1444), 129 states have call predecessors, (1444), 128 states have return successors, (1443), 1406 states have call predecessors, (1443), 1443 states have call successors, (1443) [2022-11-20 09:28:23,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3457 states to 3457 states and 5332 transitions. [2022-11-20 09:28:23,123 INFO L78 Accepts]: Start accepts. Automaton has 3457 states and 5332 transitions. Word has length 277 [2022-11-20 09:28:23,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:28:23,124 INFO L495 AbstractCegarLoop]: Abstraction has 3457 states and 5332 transitions. [2022-11-20 09:28:23,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (24), 5 states have call predecessors, (24), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-20 09:28:23,125 INFO L276 IsEmpty]: Start isEmpty. Operand 3457 states and 5332 transitions. [2022-11-20 09:28:23,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2022-11-20 09:28:23,130 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:28:23,131 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:28:23,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 09:28:23,131 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:28:23,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:23,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1756852351, now seen corresponding path program 1 times [2022-11-20 09:28:23,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:23,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741439295] [2022-11-20 09:28:23,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:23,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:23,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:23,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 09:28:23,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:23,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:28:23,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:23,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:28:23,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:23,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 09:28:23,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:23,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:28:23,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:23,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:28:23,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:23,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 09:28:23,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:23,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:28:23,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:23,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:28:23,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:23,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-20 09:28:23,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:23,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:28:23,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:23,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:28:23,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:23,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-20 09:28:23,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:23,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:28:23,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:23,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:28:23,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:23,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-20 09:28:23,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:23,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:28:23,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:23,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:28:23,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:23,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-20 09:28:23,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:23,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:28:23,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:23,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:28:23,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:23,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-20 09:28:23,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:24,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:28:24,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:24,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:28:24,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:24,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-20 09:28:24,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:24,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:28:24,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:24,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:28:24,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:24,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-11-20 09:28:24,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:24,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:28:24,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:24,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:28:24,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:24,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-11-20 09:28:24,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:24,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:28:24,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:24,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:28:24,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:24,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-11-20 09:28:24,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:24,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:28:24,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:24,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:28:24,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:24,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-11-20 09:28:24,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:24,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:28:24,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:24,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-11-20 09:28:24,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:24,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:28:24,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:24,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2022-11-20 09:28:24,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:24,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:28:24,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:24,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-11-20 09:28:24,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:24,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:28:24,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:24,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-11-20 09:28:24,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:24,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:28:24,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:24,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-11-20 09:28:24,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:24,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 09:28:24,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:24,434 INFO L134 CoverageAnalysis]: Checked inductivity of 1059 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1059 trivial. 0 not checked. [2022-11-20 09:28:24,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:24,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741439295] [2022-11-20 09:28:24,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741439295] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:28:24,435 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:28:24,436 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 09:28:24,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777460075] [2022-11-20 09:28:24,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:28:24,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 09:28:24,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:24,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 09:28:24,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-20 09:28:24,439 INFO L87 Difference]: Start difference. First operand 3457 states and 5332 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (24), 5 states have call predecessors, (24), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2022-11-20 09:28:27,105 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:28:28,948 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:28:30,957 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:28:38,031 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:28:40,041 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:29:00,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:29:00,450 INFO L93 Difference]: Finished difference Result 10083 states and 15635 transitions. [2022-11-20 09:29:00,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 09:29:00,451 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (24), 5 states have call predecessors, (24), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) Word has length 277 [2022-11-20 09:29:00,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:29:00,511 INFO L225 Difference]: With dead ends: 10083 [2022-11-20 09:29:00,511 INFO L226 Difference]: Without dead ends: 6666 [2022-11-20 09:29:00,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-11-20 09:29:00,539 INFO L413 NwaCegarLoop]: 3928 mSDtfsCounter, 6081 mSDsluCounter, 5873 mSDsCounter, 0 mSdLazyCounter, 9639 mSolverCounterSat, 9744 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6467 SdHoareTripleChecker+Valid, 9801 SdHoareTripleChecker+Invalid, 19385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 9744 IncrementalHoareTripleChecker+Valid, 9639 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.9s IncrementalHoareTripleChecker+Time [2022-11-20 09:29:00,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6467 Valid, 9801 Invalid, 19385 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [9744 Valid, 9639 Invalid, 2 Unknown, 0 Unchecked, 34.9s Time] [2022-11-20 09:29:00,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6666 states. [2022-11-20 09:29:01,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6666 to 6304. [2022-11-20 09:29:01,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6304 states, 3382 states have (on average 1.2971614429331757) internal successors, (4387), 3499 states have internal predecessors, (4387), 2676 states have call successors, (2676), 244 states have call predecessors, (2676), 245 states have return successors, (2684), 2622 states have call predecessors, (2684), 2675 states have call successors, (2684) [2022-11-20 09:29:01,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6304 states to 6304 states and 9747 transitions. [2022-11-20 09:29:01,255 INFO L78 Accepts]: Start accepts. Automaton has 6304 states and 9747 transitions. Word has length 277 [2022-11-20 09:29:01,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:29:01,258 INFO L495 AbstractCegarLoop]: Abstraction has 6304 states and 9747 transitions. [2022-11-20 09:29:01,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (24), 5 states have call predecessors, (24), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2022-11-20 09:29:01,259 INFO L276 IsEmpty]: Start isEmpty. Operand 6304 states and 9747 transitions. [2022-11-20 09:29:01,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2022-11-20 09:29:01,271 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:29:01,271 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:29:01,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 09:29:01,272 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:29:01,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:01,273 INFO L85 PathProgramCache]: Analyzing trace with hash 864125415, now seen corresponding path program 1 times [2022-11-20 09:29:01,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:29:01,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981932296] [2022-11-20 09:29:01,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:01,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:29:01,491 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:29:01,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [253809376] [2022-11-20 09:29:01,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:01,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:29:01,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_721c55a9-ea14-446a-aa14-a72578e9f584/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:29:01,499 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_721c55a9-ea14-446a-aa14-a72578e9f584/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:29:01,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_721c55a9-ea14-446a-aa14-a72578e9f584/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 09:29:03,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:03,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 5983 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 09:29:03,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:29:04,059 INFO L134 CoverageAnalysis]: Checked inductivity of 1062 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1062 trivial. 0 not checked. [2022-11-20 09:29:04,060 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:29:04,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:29:04,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981932296] [2022-11-20 09:29:04,060 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 09:29:04,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [253809376] [2022-11-20 09:29:04,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [253809376] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:29:04,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:29:04,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 09:29:04,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340246684] [2022-11-20 09:29:04,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:29:04,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 09:29:04,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:29:04,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 09:29:04,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 09:29:04,064 INFO L87 Difference]: Start difference. First operand 6304 states and 9747 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-20 09:29:04,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:29:04,600 INFO L93 Difference]: Finished difference Result 12592 states and 19470 transitions. [2022-11-20 09:29:04,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 09:29:04,601 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 329 [2022-11-20 09:29:04,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:29:04,662 INFO L225 Difference]: With dead ends: 12592 [2022-11-20 09:29:04,662 INFO L226 Difference]: Without dead ends: 6328 [2022-11-20 09:29:04,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 325 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-20 09:29:04,719 INFO L413 NwaCegarLoop]: 5335 mSDtfsCounter, 5258 mSDsluCounter, 10649 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5262 SdHoareTripleChecker+Valid, 15984 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:29:04,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5262 Valid, 15984 Invalid, 21 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 09:29:04,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6328 states. [2022-11-20 09:29:05,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6328 to 6322. [2022-11-20 09:29:05,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6322 states, 3398 states have (on average 1.2969393761035903) internal successors, (4407), 3515 states have internal predecessors, (4407), 2676 states have call successors, (2676), 246 states have call predecessors, (2676), 247 states have return successors, (2684), 2622 states have call predecessors, (2684), 2675 states have call successors, (2684) [2022-11-20 09:29:05,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6322 states to 6322 states and 9767 transitions. [2022-11-20 09:29:05,554 INFO L78 Accepts]: Start accepts. Automaton has 6322 states and 9767 transitions. Word has length 329 [2022-11-20 09:29:05,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:29:05,556 INFO L495 AbstractCegarLoop]: Abstraction has 6322 states and 9767 transitions. [2022-11-20 09:29:05,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-20 09:29:05,557 INFO L276 IsEmpty]: Start isEmpty. Operand 6322 states and 9767 transitions. [2022-11-20 09:29:05,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2022-11-20 09:29:05,572 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:29:05,573 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:29:05,608 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_721c55a9-ea14-446a-aa14-a72578e9f584/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 09:29:05,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_721c55a9-ea14-446a-aa14-a72578e9f584/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:29:05,788 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:29:05,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:05,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1968897295, now seen corresponding path program 1 times [2022-11-20 09:29:05,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:29:05,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169129295] [2022-11-20 09:29:05,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:05,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:29:06,134 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:29:06,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [999841482] [2022-11-20 09:29:06,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:06,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:29:06,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_721c55a9-ea14-446a-aa14-a72578e9f584/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:29:06,137 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_721c55a9-ea14-446a-aa14-a72578e9f584/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:29:06,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_721c55a9-ea14-446a-aa14-a72578e9f584/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 09:29:07,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:07,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 5981 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 09:29:07,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:29:08,492 INFO L134 CoverageAnalysis]: Checked inductivity of 1062 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1062 trivial. 0 not checked. [2022-11-20 09:29:08,493 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:29:08,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:29:08,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169129295] [2022-11-20 09:29:08,493 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 09:29:08,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [999841482] [2022-11-20 09:29:08,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [999841482] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:29:08,494 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:29:08,494 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 09:29:08,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093074532] [2022-11-20 09:29:08,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:29:08,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 09:29:08,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:29:08,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 09:29:08,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 09:29:08,496 INFO L87 Difference]: Start difference. First operand 6322 states and 9767 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-20 09:29:09,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:29:09,452 INFO L93 Difference]: Finished difference Result 18928 states and 29239 transitions. [2022-11-20 09:29:09,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 09:29:09,452 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 328 [2022-11-20 09:29:09,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:29:09,561 INFO L225 Difference]: With dead ends: 18928 [2022-11-20 09:29:09,561 INFO L226 Difference]: Without dead ends: 12646 [2022-11-20 09:29:09,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 324 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-20 09:29:09,610 INFO L413 NwaCegarLoop]: 6904 mSDtfsCounter, 5270 mSDsluCounter, 19074 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5274 SdHoareTripleChecker+Valid, 25978 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:29:09,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5274 Valid, 25978 Invalid, 27 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 09:29:09,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12646 states. [2022-11-20 09:29:10,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12646 to 12591. [2022-11-20 09:29:10,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12591 states, 6765 states have (on average 1.29830007390983) internal successors, (8783), 7005 states have internal predecessors, (8783), 5331 states have call successors, (5331), 491 states have call predecessors, (5331), 494 states have return successors, (5348), 5218 states have call predecessors, (5348), 5330 states have call successors, (5348) [2022-11-20 09:29:11,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12591 states to 12591 states and 19462 transitions. [2022-11-20 09:29:11,026 INFO L78 Accepts]: Start accepts. Automaton has 12591 states and 19462 transitions. Word has length 328 [2022-11-20 09:29:11,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:29:11,031 INFO L495 AbstractCegarLoop]: Abstraction has 12591 states and 19462 transitions. [2022-11-20 09:29:11,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-20 09:29:11,031 INFO L276 IsEmpty]: Start isEmpty. Operand 12591 states and 19462 transitions. [2022-11-20 09:29:11,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2022-11-20 09:29:11,045 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:29:11,045 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:29:11,083 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_721c55a9-ea14-446a-aa14-a72578e9f584/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-20 09:29:11,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_721c55a9-ea14-446a-aa14-a72578e9f584/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-11-20 09:29:11,265 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:29:11,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:11,266 INFO L85 PathProgramCache]: Analyzing trace with hash -909831783, now seen corresponding path program 1 times [2022-11-20 09:29:11,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:29:11,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929765335] [2022-11-20 09:29:11,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:11,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:29:11,479 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:29:11,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1508658226] [2022-11-20 09:29:11,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:11,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:29:11,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_721c55a9-ea14-446a-aa14-a72578e9f584/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:29:11,482 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_721c55a9-ea14-446a-aa14-a72578e9f584/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:29:11,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_721c55a9-ea14-446a-aa14-a72578e9f584/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 09:29:13,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:13,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 5995 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 09:29:13,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:29:13,885 INFO L134 CoverageAnalysis]: Checked inductivity of 1062 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1062 trivial. 0 not checked. [2022-11-20 09:29:13,886 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:29:13,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:29:13,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929765335] [2022-11-20 09:29:13,886 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 09:29:13,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1508658226] [2022-11-20 09:29:13,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1508658226] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:29:13,887 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:29:13,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 09:29:13,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228977816] [2022-11-20 09:29:13,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:29:13,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 09:29:13,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:29:13,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 09:29:13,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 09:29:13,889 INFO L87 Difference]: Start difference. First operand 12591 states and 19462 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-20 09:29:15,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:29:15,646 INFO L93 Difference]: Finished difference Result 37753 states and 58386 transitions. [2022-11-20 09:29:15,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 09:29:15,646 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 325 [2022-11-20 09:29:15,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:29:15,867 INFO L225 Difference]: With dead ends: 37753 [2022-11-20 09:29:15,867 INFO L226 Difference]: Without dead ends: 25202 [2022-11-20 09:29:15,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 321 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-20 09:29:15,958 INFO L413 NwaCegarLoop]: 7430 mSDtfsCounter, 5274 mSDsluCounter, 20124 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5278 SdHoareTripleChecker+Valid, 27554 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:29:15,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5278 Valid, 27554 Invalid, 44 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 09:29:15,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25202 states. [2022-11-20 09:29:18,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25202 to 25159. [2022-11-20 09:29:18,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25159 states, 13523 states have (on average 1.2990460696590993) internal successors, (17567), 14019 states have internal predecessors, (17567), 10643 states have call successors, (10643), 985 states have call predecessors, (10643), 992 states have return successors, (10702), 10402 states have call predecessors, (10702), 10642 states have call successors, (10702) [2022-11-20 09:29:18,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25159 states to 25159 states and 38912 transitions. [2022-11-20 09:29:18,906 INFO L78 Accepts]: Start accepts. Automaton has 25159 states and 38912 transitions. Word has length 325 [2022-11-20 09:29:18,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:29:18,907 INFO L495 AbstractCegarLoop]: Abstraction has 25159 states and 38912 transitions. [2022-11-20 09:29:18,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-20 09:29:18,908 INFO L276 IsEmpty]: Start isEmpty. Operand 25159 states and 38912 transitions. [2022-11-20 09:29:19,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2022-11-20 09:29:19,131 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:29:19,132 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:29:19,181 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_721c55a9-ea14-446a-aa14-a72578e9f584/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 09:29:19,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_721c55a9-ea14-446a-aa14-a72578e9f584/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:29:19,371 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:29:19,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:19,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1047171524, now seen corresponding path program 1 times [2022-11-20 09:29:19,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:29:19,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348339799] [2022-11-20 09:29:19,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:19,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:29:19,775 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:29:19,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1620256928] [2022-11-20 09:29:19,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:19,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:29:19,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_721c55a9-ea14-446a-aa14-a72578e9f584/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:29:19,778 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_721c55a9-ea14-446a-aa14-a72578e9f584/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:29:19,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_721c55a9-ea14-446a-aa14-a72578e9f584/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 09:29:21,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:21,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 5999 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 09:29:21,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:29:22,268 INFO L134 CoverageAnalysis]: Checked inductivity of 1062 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1062 trivial. 0 not checked. [2022-11-20 09:29:22,269 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:29:22,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:29:22,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348339799] [2022-11-20 09:29:22,269 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 09:29:22,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1620256928] [2022-11-20 09:29:22,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1620256928] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:29:22,269 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:29:22,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 09:29:22,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774123581] [2022-11-20 09:29:22,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:29:22,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 09:29:22,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:29:22,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 09:29:22,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 09:29:22,272 INFO L87 Difference]: Start difference. First operand 25159 states and 38912 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-20 09:29:24,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:29:24,862 INFO L93 Difference]: Finished difference Result 75541 states and 116884 transitions. [2022-11-20 09:29:24,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 09:29:24,863 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 327 [2022-11-20 09:29:24,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:29:25,364 INFO L225 Difference]: With dead ends: 75541 [2022-11-20 09:29:25,365 INFO L226 Difference]: Without dead ends: 50422 [2022-11-20 09:29:25,528 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 323 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-20 09:29:25,529 INFO L413 NwaCegarLoop]: 6804 mSDtfsCounter, 5263 mSDsluCounter, 18858 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5267 SdHoareTripleChecker+Valid, 25662 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:29:25,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5267 Valid, 25662 Invalid, 41 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 09:29:25,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50422 states. [2022-11-20 09:29:30,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50422 to 50307. [2022-11-20 09:29:30,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50307 states, 27055 states have (on average 1.299242284235816) internal successors, (35151), 28043 states have internal predecessors, (35151), 21263 states have call successors, (21263), 1973 states have call predecessors, (21263), 1988 states have return successors, (21446), 20786 states have call predecessors, (21446), 21262 states have call successors, (21446) [2022-11-20 09:29:31,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50307 states to 50307 states and 77860 transitions. [2022-11-20 09:29:31,019 INFO L78 Accepts]: Start accepts. Automaton has 50307 states and 77860 transitions. Word has length 327 [2022-11-20 09:29:31,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:29:31,020 INFO L495 AbstractCegarLoop]: Abstraction has 50307 states and 77860 transitions. [2022-11-20 09:29:31,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-20 09:29:31,021 INFO L276 IsEmpty]: Start isEmpty. Operand 50307 states and 77860 transitions. [2022-11-20 09:29:31,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2022-11-20 09:29:31,041 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:29:31,041 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:29:31,070 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_721c55a9-ea14-446a-aa14-a72578e9f584/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 09:29:31,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_721c55a9-ea14-446a-aa14-a72578e9f584/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:29:31,263 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:29:31,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:31,264 INFO L85 PathProgramCache]: Analyzing trace with hash 962672133, now seen corresponding path program 1 times [2022-11-20 09:29:31,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:29:31,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767217079] [2022-11-20 09:29:31,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:31,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:29:31,480 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:29:31,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1799188103] [2022-11-20 09:29:31,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:31,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:29:31,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_721c55a9-ea14-446a-aa14-a72578e9f584/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:29:31,482 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_721c55a9-ea14-446a-aa14-a72578e9f584/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:29:31,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_721c55a9-ea14-446a-aa14-a72578e9f584/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 09:29:33,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:33,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 6001 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 09:29:33,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:29:34,590 INFO L134 CoverageAnalysis]: Checked inductivity of 1062 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1062 trivial. 0 not checked. [2022-11-20 09:29:34,590 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:29:34,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:29:34,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767217079] [2022-11-20 09:29:34,590 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 09:29:34,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1799188103] [2022-11-20 09:29:34,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1799188103] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:29:34,591 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:29:34,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 09:29:34,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624491997] [2022-11-20 09:29:34,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:29:34,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 09:29:34,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:29:34,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 09:29:34,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 09:29:34,594 INFO L87 Difference]: Start difference. First operand 50307 states and 77860 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-20 09:29:40,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:29:40,281 INFO L93 Difference]: Finished difference Result 151153 states and 234048 transitions. [2022-11-20 09:29:40,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 09:29:40,281 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 328 [2022-11-20 09:29:40,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:29:41,355 INFO L225 Difference]: With dead ends: 151153 [2022-11-20 09:29:41,356 INFO L226 Difference]: Without dead ends: 100886 [2022-11-20 09:29:41,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 324 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-20 09:29:41,679 INFO L413 NwaCegarLoop]: 6760 mSDtfsCounter, 5262 mSDsluCounter, 18770 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5266 SdHoareTripleChecker+Valid, 25530 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:29:41,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5266 Valid, 25530 Invalid, 41 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [4 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 09:29:41,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100886 states. [2022-11-20 09:29:50,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100886 to 100635. [2022-11-20 09:29:50,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100635 states, 54151 states have (on average 1.299311185389005) internal successors, (70359), 56119 states have internal predecessors, (70359), 42499 states have call successors, (42499), 3953 states have call predecessors, (42499), 3984 states have return successors, (43042), 41554 states have call predecessors, (43042), 42498 states have call successors, (43042) [2022-11-20 09:29:52,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100635 states to 100635 states and 155900 transitions. [2022-11-20 09:29:52,143 INFO L78 Accepts]: Start accepts. Automaton has 100635 states and 155900 transitions. Word has length 328 [2022-11-20 09:29:52,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:29:52,147 INFO L495 AbstractCegarLoop]: Abstraction has 100635 states and 155900 transitions. [2022-11-20 09:29:52,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-20 09:29:52,147 INFO L276 IsEmpty]: Start isEmpty. Operand 100635 states and 155900 transitions. [2022-11-20 09:29:52,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2022-11-20 09:29:52,166 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:29:52,166 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:29:52,193 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_721c55a9-ea14-446a-aa14-a72578e9f584/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 09:29:52,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_721c55a9-ea14-446a-aa14-a72578e9f584/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:29:52,379 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:29:52,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:52,380 INFO L85 PathProgramCache]: Analyzing trace with hash 829206338, now seen corresponding path program 1 times [2022-11-20 09:29:52,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:29:52,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547765505] [2022-11-20 09:29:52,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:52,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:29:52,598 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:29:52,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [724647924] [2022-11-20 09:29:52,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:52,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:29:52,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_721c55a9-ea14-446a-aa14-a72578e9f584/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:29:52,600 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_721c55a9-ea14-446a-aa14-a72578e9f584/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:29:52,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_721c55a9-ea14-446a-aa14-a72578e9f584/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 09:29:54,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:54,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 5997 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 09:29:54,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:29:55,079 INFO L134 CoverageAnalysis]: Checked inductivity of 1062 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1062 trivial. 0 not checked. [2022-11-20 09:29:55,080 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:29:55,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:29:55,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547765505] [2022-11-20 09:29:55,080 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 09:29:55,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724647924] [2022-11-20 09:29:55,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [724647924] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:29:55,081 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:29:55,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 09:29:55,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112920563] [2022-11-20 09:29:55,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:29:55,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 09:29:55,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:29:55,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 09:29:55,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 09:29:55,083 INFO L87 Difference]: Start difference. First operand 100635 states and 155900 transitions. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26)