./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--hp--hp100.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_f4dbe0ca-5671-4c37-9ccf-02fd492499a6/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4dbe0ca-5671-4c37-9ccf-02fd492499a6/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_f4dbe0ca-5671-4c37-9ccf-02fd492499a6/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4dbe0ca-5671-4c37-9ccf-02fd492499a6/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--ethernet--hp--hp100.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4dbe0ca-5671-4c37-9ccf-02fd492499a6/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_f4dbe0ca-5671-4c37-9ccf-02fd492499a6/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 71a394c873c772dcf5e6708cb37d9b35e24256f5a212c542b9c08f202c87eae6 --- 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 10:36:42,203 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:36:42,205 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:36:42,231 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:36:42,232 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:36:42,233 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:36:42,237 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:36:42,244 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:36:42,248 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:36:42,251 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:36:42,253 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:36:42,255 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:36:42,256 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:36:42,260 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:36:42,262 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:36:42,264 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:36:42,266 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:36:42,273 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:36:42,275 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:36:42,277 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:36:42,278 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:36:42,282 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:36:42,284 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:36:42,285 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:36:42,289 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:36:42,295 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:36:42,296 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:36:42,297 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:36:42,299 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:36:42,300 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:36:42,300 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:36:42,301 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:36:42,302 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:36:42,304 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:36:42,306 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:36:42,308 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:36:42,309 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:36:42,310 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:36:42,310 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:36:42,312 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:36:42,313 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:36:42,314 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4dbe0ca-5671-4c37-9ccf-02fd492499a6/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-20 10:36:42,358 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:36:42,359 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:36:42,359 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:36:42,360 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:36:42,360 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 10:36:42,361 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 10:36:42,362 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:36:42,362 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:36:42,362 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:36:42,362 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:36:42,363 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 10:36:42,364 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:36:42,364 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 10:36:42,364 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 10:36:42,365 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 10:36:42,365 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 10:36:42,365 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:36:42,365 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 10:36:42,366 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:36:42,366 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:36:42,366 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 10:36:42,366 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:36:42,367 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:36:42,367 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 10:36:42,367 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 10:36:42,367 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 10:36:42,367 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 10:36:42,368 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 10:36:42,368 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 10:36:42,368 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 10:36:42,368 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_f4dbe0ca-5671-4c37-9ccf-02fd492499a6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4dbe0ca-5671-4c37-9ccf-02fd492499a6/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 71a394c873c772dcf5e6708cb37d9b35e24256f5a212c542b9c08f202c87eae6 [2022-11-20 10:36:42,628 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:36:42,671 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:36:42,677 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:36:42,679 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:36:42,680 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:36:42,681 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4dbe0ca-5671-4c37-9ccf-02fd492499a6/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--hp--hp100.ko-entry_point.cil.out.i [2022-11-20 10:36:45,827 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:36:46,424 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:36:46,425 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4dbe0ca-5671-4c37-9ccf-02fd492499a6/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--hp--hp100.ko-entry_point.cil.out.i [2022-11-20 10:36:46,488 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4dbe0ca-5671-4c37-9ccf-02fd492499a6/bin/uautomizer-ug76WZFUDN/data/bb61c966f/d2f9bcf8786a46a9b524be55193d06d9/FLAGc61261abe [2022-11-20 10:36:46,509 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4dbe0ca-5671-4c37-9ccf-02fd492499a6/bin/uautomizer-ug76WZFUDN/data/bb61c966f/d2f9bcf8786a46a9b524be55193d06d9 [2022-11-20 10:36:46,513 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:36:46,517 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:36:46,518 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:36:46,519 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:36:46,522 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:36:46,523 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:36:46" (1/1) ... [2022-11-20 10:36:46,524 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3561fee6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:36:46, skipping insertion in model container [2022-11-20 10:36:46,525 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:36:46" (1/1) ... [2022-11-20 10:36:46,532 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:36:46,662 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:36:48,566 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_f4dbe0ca-5671-4c37-9ccf-02fd492499a6/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--hp--hp100.ko-entry_point.cil.out.i[263471,263484] [2022-11-20 10:36:48,623 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:36:48,652 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 10:36:49,052 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_f4dbe0ca-5671-4c37-9ccf-02fd492499a6/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--hp--hp100.ko-entry_point.cil.out.i[263471,263484] [2022-11-20 10:36:49,064 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:36:49,262 INFO L208 MainTranslator]: Completed translation [2022-11-20 10:36:49,262 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:36:49 WrapperNode [2022-11-20 10:36:49,264 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 10:36:49,265 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 10:36:49,266 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 10:36:49,266 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 10:36:49,273 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:36:49" (1/1) ... [2022-11-20 10:36:49,365 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:36:49" (1/1) ... [2022-11-20 10:36:49,536 INFO L138 Inliner]: procedures = 225, calls = 1464, calls flagged for inlining = 103, calls inlined = 100, statements flattened = 3737 [2022-11-20 10:36:49,536 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 10:36:49,537 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 10:36:49,537 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 10:36:49,537 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 10:36:49,547 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:36:49" (1/1) ... [2022-11-20 10:36:49,547 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:36:49" (1/1) ... [2022-11-20 10:36:49,579 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:36:49" (1/1) ... [2022-11-20 10:36:49,579 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:36:49" (1/1) ... [2022-11-20 10:36:49,759 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:36:49" (1/1) ... [2022-11-20 10:36:49,778 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:36:49" (1/1) ... [2022-11-20 10:36:49,798 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:36:49" (1/1) ... [2022-11-20 10:36:49,815 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:36:49" (1/1) ... [2022-11-20 10:36:49,858 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 10:36:49,862 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 10:36:49,862 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 10:36:49,863 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 10:36:49,863 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:36:49" (1/1) ... [2022-11-20 10:36:49,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:36:49,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4dbe0ca-5671-4c37-9ccf-02fd492499a6/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:36:49,902 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4dbe0ca-5671-4c37-9ccf-02fd492499a6/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 10:36:49,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4dbe0ca-5671-4c37-9ccf-02fd492499a6/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 10:36:49,958 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_update_stats [2022-11-20 10:36:49,958 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_update_stats [2022-11-20 10:36:49,958 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-20 10:36:49,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-20 10:36:49,959 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-20 10:36:49,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-20 10:36:49,959 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-20 10:36:49,959 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-20 10:36:49,960 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2022-11-20 10:36:49,961 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2022-11-20 10:36:49,961 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2022-11-20 10:36:49,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2022-11-20 10:36:49,961 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-20 10:36:49,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-20 10:36:49,962 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-20 10:36:49,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-20 10:36:49,962 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2022-11-20 10:36:49,962 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2022-11-20 10:36:49,962 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-20 10:36:49,963 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-20 10:36:49,963 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-20 10:36:49,963 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-20 10:36:49,963 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-20 10:36:49,963 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-20 10:36:49,964 INFO L130 BoogieDeclarations]: Found specification of procedure dev_trans_start [2022-11-20 10:36:49,964 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_trans_start [2022-11-20 10:36:49,964 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_open [2022-11-20 10:36:49,964 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_open [2022-11-20 10:36:49,964 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_load_eeprom [2022-11-20 10:36:49,964 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_load_eeprom [2022-11-20 10:36:49,965 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-20 10:36:49,965 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-20 10:36:49,965 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 10:36:49,966 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-20 10:36:49,966 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_sense_lan [2022-11-20 10:36:49,967 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_sense_lan [2022-11-20 10:36:49,967 INFO L130 BoogieDeclarations]: Found specification of procedure eth_mac_addr [2022-11-20 10:36:49,968 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_mac_addr [2022-11-20 10:36:49,968 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 10:36:49,968 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_get_stats [2022-11-20 10:36:49,968 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_get_stats [2022-11-20 10:36:49,969 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-20 10:36:49,969 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-20 10:36:49,969 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx [2022-11-20 10:36:49,969 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx [2022-11-20 10:36:49,970 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2022-11-20 10:36:49,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2022-11-20 10:36:49,970 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-20 10:36:49,970 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-20 10:36:49,970 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2022-11-20 10:36:49,971 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2022-11-20 10:36:49,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 10:36:49,971 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2022-11-20 10:36:49,971 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2022-11-20 10:36:49,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-20 10:36:49,972 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_word [2022-11-20 10:36:49,972 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_word [2022-11-20 10:36:49,973 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2022-11-20 10:36:49,973 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2022-11-20 10:36:49,973 INFO L130 BoogieDeclarations]: Found specification of procedure eth_change_mtu [2022-11-20 10:36:49,974 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_change_mtu [2022-11-20 10:36:49,974 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-20 10:36:49,975 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-20 10:36:49,975 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2022-11-20 10:36:49,975 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2022-11-20 10:36:49,976 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-20 10:36:49,976 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-20 10:36:49,976 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-20 10:36:49,976 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-20 10:36:49,976 INFO L130 BoogieDeclarations]: Found specification of procedure outl [2022-11-20 10:36:49,976 INFO L138 BoogieDeclarations]: Found implementation of procedure outl [2022-11-20 10:36:49,977 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_cascade_reset [2022-11-20 10:36:49,977 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_cascade_reset [2022-11-20 10:36:49,977 INFO L130 BoogieDeclarations]: Found specification of procedure __dev_kfree_skb_any [2022-11-20 10:36:49,977 INFO L138 BoogieDeclarations]: Found implementation of procedure __dev_kfree_skb_any [2022-11-20 10:36:49,977 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-20 10:36:49,978 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-20 10:36:49,978 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-20 10:36:49,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-20 10:36:49,978 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_build_rx_pdl [2022-11-20 10:36:49,978 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_build_rx_pdl [2022-11-20 10:36:49,979 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2022-11-20 10:36:49,979 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2022-11-20 10:36:49,979 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 10:36:49,980 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-20 10:36:49,980 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-20 10:36:49,980 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-20 10:36:49,981 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-20 10:36:49,981 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-20 10:36:49,982 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-20 10:36:49,982 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_rx_bm [2022-11-20 10:36:49,982 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_rx_bm [2022-11-20 10:36:49,982 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_BM_shutdown [2022-11-20 10:36:49,982 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_BM_shutdown [2022-11-20 10:36:49,982 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-11-20 10:36:49,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-11-20 10:36:49,983 INFO L130 BoogieDeclarations]: Found specification of procedure wait [2022-11-20 10:36:49,983 INFO L138 BoogieDeclarations]: Found implementation of procedure wait [2022-11-20 10:36:49,983 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2022-11-20 10:36:49,984 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2022-11-20 10:36:49,984 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2022-11-20 10:36:49,985 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2022-11-20 10:36:49,985 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_hwinit [2022-11-20 10:36:49,985 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_hwinit [2022-11-20 10:36:49,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 10:36:49,985 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-20 10:36:49,985 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-20 10:36:49,986 INFO L130 BoogieDeclarations]: Found specification of procedure dev_consume_skb_any [2022-11-20 10:36:49,987 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_consume_skb_any [2022-11-20 10:36:49,987 INFO L130 BoogieDeclarations]: Found specification of procedure eth_type_trans [2022-11-20 10:36:49,987 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_type_trans [2022-11-20 10:36:49,987 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-20 10:36:49,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-20 10:36:49,987 INFO L130 BoogieDeclarations]: Found specification of procedure virt_to_whatever [2022-11-20 10:36:49,988 INFO L138 BoogieDeclarations]: Found implementation of procedure virt_to_whatever [2022-11-20 10:36:49,988 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-20 10:36:49,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-20 10:36:49,989 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_close [2022-11-20 10:36:49,990 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_close [2022-11-20 10:36:49,992 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout_interruptible [2022-11-20 10:36:49,993 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout_interruptible [2022-11-20 10:36:49,993 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_stop_interface [2022-11-20 10:36:49,993 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_stop_interface [2022-11-20 10:36:49,994 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 10:36:49,995 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_check_lan [2022-11-20 10:36:49,996 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_check_lan [2022-11-20 10:36:49,996 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-20 10:36:49,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-20 10:36:50,002 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 10:36:50,002 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-20 10:36:50,002 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-20 10:36:50,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 10:36:50,003 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-20 10:36:50,003 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2022-11-20 10:36:50,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2022-11-20 10:36:50,004 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_set_multicast_list [2022-11-20 10:36:50,004 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_set_multicast_list [2022-11-20 10:36:50,004 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_rxfill [2022-11-20 10:36:50,004 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_rxfill [2022-11-20 10:36:50,004 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_start_interface [2022-11-20 10:36:50,005 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_start_interface [2022-11-20 10:36:50,005 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-11-20 10:36:50,005 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-11-20 10:36:50,005 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2022-11-20 10:36:50,005 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2022-11-20 10:36:50,005 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_clean_txring [2022-11-20 10:36:50,006 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_clean_txring [2022-11-20 10:36:50,006 INFO L130 BoogieDeclarations]: Found specification of procedure inl [2022-11-20 10:36:50,006 INFO L138 BoogieDeclarations]: Found implementation of procedure inl [2022-11-20 10:36:50,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 10:36:50,006 INFO L130 BoogieDeclarations]: Found specification of procedure inw [2022-11-20 10:36:50,006 INFO L138 BoogieDeclarations]: Found implementation of procedure inw [2022-11-20 10:36:50,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 10:36:50,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 10:36:50,007 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_login_to_vg_hub [2022-11-20 10:36:50,007 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_login_to_vg_hub [2022-11-20 10:36:50,007 INFO L130 BoogieDeclarations]: Found specification of procedure preempt_count [2022-11-20 10:36:50,007 INFO L138 BoogieDeclarations]: Found implementation of procedure preempt_count [2022-11-20 10:36:50,839 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 10:36:50,843 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 10:36:51,450 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-20 10:36:54,449 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-20 10:36:54,689 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##8: assume 0 == (if 0 == ~tmp___4~7#1 then 0 else (if 2096896 == ~tmp___4~7#1 then ~tmp___4~7#1 else ~bitwiseAnd(~tmp___4~7#1, 2096896))) % 18446744073709551616; [2022-11-20 10:36:54,689 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume !(0 == (if 0 == ~tmp___4~7#1 then 0 else (if 2096896 == ~tmp___4~7#1 then ~tmp___4~7#1 else ~bitwiseAnd(~tmp___4~7#1, 2096896))) % 18446744073709551616); [2022-11-20 10:36:54,689 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L8189-1: assume -9223372036854775808 <= #t~ret666#1 && #t~ret666#1 <= 9223372036854775807;havoc #t~ret666#1; [2022-11-20 10:36:54,689 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L8189: SUMMARY for call #t~ret666#1 := schedule_timeout_interruptible(1); srcloc: null [2022-11-20 10:36:54,690 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L8192: assume (if (~jiffies~0 - ~time~2#1) % 18446744073709551616 % 18446744073709551616 <= 9223372036854775807 then (~jiffies~0 - ~time~2#1) % 18446744073709551616 % 18446744073709551616 else (~jiffies~0 - ~time~2#1) % 18446744073709551616 % 18446744073709551616 - 18446744073709551616) < 0; [2022-11-20 10:36:54,690 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L8192: assume !((if (~jiffies~0 - ~time~2#1) % 18446744073709551616 % 18446744073709551616 <= 9223372036854775807 then (~jiffies~0 - ~time~2#1) % 18446744073709551616 % 18446744073709551616 else (~jiffies~0 - ~time~2#1) % 18446744073709551616 % 18446744073709551616 - 18446744073709551616) < 0); [2022-11-20 10:36:54,850 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 10:36:54,877 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 10:36:54,877 INFO L300 CfgBuilder]: Removed 8 assume(true) statements. [2022-11-20 10:36:54,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:36:54 BoogieIcfgContainer [2022-11-20 10:36:54,882 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 10:36:54,885 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 10:36:54,885 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 10:36:54,888 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 10:36:54,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:36:46" (1/3) ... [2022-11-20 10:36:54,889 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37e7f767 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:36:54, skipping insertion in model container [2022-11-20 10:36:54,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:36:49" (2/3) ... [2022-11-20 10:36:54,890 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37e7f767 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:36:54, skipping insertion in model container [2022-11-20 10:36:54,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:36:54" (3/3) ... [2022-11-20 10:36:54,892 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--hp--hp100.ko-entry_point.cil.out.i [2022-11-20 10:36:54,909 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 10:36:54,910 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 10:36:55,029 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:36:55,036 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;@65cbaa44, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:36:55,037 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 10:36:55,048 INFO L276 IsEmpty]: Start isEmpty. Operand has 1652 states, 1048 states have (on average 1.3587786259541985) internal successors, (1424), 1102 states have internal predecessors, (1424), 535 states have call successors, (535), 70 states have call predecessors, (535), 69 states have return successors, (528), 512 states have call predecessors, (528), 528 states have call successors, (528) [2022-11-20 10:36:55,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-11-20 10:36:55,087 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:36:55,088 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:36:55,089 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:36:55,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:36:55,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1230881091, now seen corresponding path program 1 times [2022-11-20 10:36:55,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:36:55,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629423906] [2022-11-20 10:36:55,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:36:55,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:36:55,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:55,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:36:55,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629423906] [2022-11-20 10:36:55,779 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-20 10:36:55,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1654193467] [2022-11-20 10:36:55,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:36:55,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:36:55,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4dbe0ca-5671-4c37-9ccf-02fd492499a6/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:36:55,786 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4dbe0ca-5671-4c37-9ccf-02fd492499a6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:36:55,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4dbe0ca-5671-4c37-9ccf-02fd492499a6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 10:36:56,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:56,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 2193 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-20 10:36:56,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:36:56,796 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2022-11-20 10:36:56,796 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:36:56,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1654193467] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:36:56,798 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:36:56,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 10:36:56,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292118207] [2022-11-20 10:36:56,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:36:56,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 10:36:56,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:36:56,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 10:36:56,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 10:36:56,852 INFO L87 Difference]: Start difference. First operand has 1652 states, 1048 states have (on average 1.3587786259541985) internal successors, (1424), 1102 states have internal predecessors, (1424), 535 states have call successors, (535), 70 states have call predecessors, (535), 69 states have return successors, (528), 512 states have call predecessors, (528), 528 states have call successors, (528) Second operand has 2 states, 2 states have (on average 35.5) internal successors, (71), 2 states have internal predecessors, (71), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-20 10:36:57,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:36:57,045 INFO L93 Difference]: Finished difference Result 3293 states and 5027 transitions. [2022-11-20 10:36:57,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 10:36:57,048 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 35.5) internal successors, (71), 2 states have internal predecessors, (71), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 171 [2022-11-20 10:36:57,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:36:57,081 INFO L225 Difference]: With dead ends: 3293 [2022-11-20 10:36:57,081 INFO L226 Difference]: Without dead ends: 1626 [2022-11-20 10:36:57,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 10:36:57,107 INFO L413 NwaCegarLoop]: 2469 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2469 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:36:57,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2469 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:36:57,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1626 states. [2022-11-20 10:36:57,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1626 to 1626. [2022-11-20 10:36:57,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1626 states, 1031 states have (on average 1.3482056256062076) internal successors, (1390), 1075 states have internal predecessors, (1390), 526 states have call successors, (526), 69 states have call predecessors, (526), 68 states have return successors, (525), 509 states have call predecessors, (525), 525 states have call successors, (525) [2022-11-20 10:36:57,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1626 states to 1626 states and 2441 transitions. [2022-11-20 10:36:57,340 INFO L78 Accepts]: Start accepts. Automaton has 1626 states and 2441 transitions. Word has length 171 [2022-11-20 10:36:57,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:36:57,341 INFO L495 AbstractCegarLoop]: Abstraction has 1626 states and 2441 transitions. [2022-11-20 10:36:57,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 35.5) internal successors, (71), 2 states have internal predecessors, (71), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-20 10:36:57,342 INFO L276 IsEmpty]: Start isEmpty. Operand 1626 states and 2441 transitions. [2022-11-20 10:36:57,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-20 10:36:57,361 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:36:57,361 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:36:57,378 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4dbe0ca-5671-4c37-9ccf-02fd492499a6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 10:36:57,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4dbe0ca-5671-4c37-9ccf-02fd492499a6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-20 10:36:57,572 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:36:57,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:36:57,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1620918068, now seen corresponding path program 1 times [2022-11-20 10:36:57,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:36:57,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191198536] [2022-11-20 10:36:57,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:36:57,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:36:57,798 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:36:57,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1293622194] [2022-11-20 10:36:57,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:36:57,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:36:57,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4dbe0ca-5671-4c37-9ccf-02fd492499a6/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:36:57,801 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4dbe0ca-5671-4c37-9ccf-02fd492499a6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:36:57,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4dbe0ca-5671-4c37-9ccf-02fd492499a6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 10:36:58,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:58,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 2195 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:36:58,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:36:58,964 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2022-11-20 10:36:58,965 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:36:58,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:36:58,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191198536] [2022-11-20 10:36:58,965 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:36:58,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1293622194] [2022-11-20 10:36:58,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1293622194] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:36:58,966 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:36:58,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:36:58,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111663489] [2022-11-20 10:36:58,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:36:58,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:36:58,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:36:58,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:36:58,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:36:58,968 INFO L87 Difference]: Start difference. First operand 1626 states and 2441 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-20 10:36:59,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:36:59,297 INFO L93 Difference]: Finished difference Result 4849 states and 7292 transitions. [2022-11-20 10:36:59,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 10:36:59,298 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 172 [2022-11-20 10:36:59,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:36:59,332 INFO L225 Difference]: With dead ends: 4849 [2022-11-20 10:36:59,332 INFO L226 Difference]: Without dead ends: 3245 [2022-11-20 10:36:59,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 168 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 10:36:59,346 INFO L413 NwaCegarLoop]: 3228 mSDtfsCounter, 2409 mSDsluCounter, 8844 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2413 SdHoareTripleChecker+Valid, 12072 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 10:36:59,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2413 Valid, 12072 Invalid, 41 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:36:59,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3245 states. [2022-11-20 10:36:59,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3245 to 3236. [2022-11-20 10:36:59,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3236 states, 2056 states have (on average 1.350194552529183) internal successors, (2776), 2144 states have internal predecessors, (2776), 1043 states have call successors, (1043), 137 states have call predecessors, (1043), 136 states have return successors, (1046), 1010 states have call predecessors, (1046), 1042 states have call successors, (1046) [2022-11-20 10:36:59,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3236 states to 3236 states and 4865 transitions. [2022-11-20 10:36:59,640 INFO L78 Accepts]: Start accepts. Automaton has 3236 states and 4865 transitions. Word has length 172 [2022-11-20 10:36:59,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:36:59,642 INFO L495 AbstractCegarLoop]: Abstraction has 3236 states and 4865 transitions. [2022-11-20 10:36:59,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-20 10:36:59,643 INFO L276 IsEmpty]: Start isEmpty. Operand 3236 states and 4865 transitions. [2022-11-20 10:36:59,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-11-20 10:36:59,652 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:36:59,652 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:36:59,668 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4dbe0ca-5671-4c37-9ccf-02fd492499a6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 10:36:59,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4dbe0ca-5671-4c37-9ccf-02fd492499a6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:36:59,863 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:36:59,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:36:59,864 INFO L85 PathProgramCache]: Analyzing trace with hash -386975751, now seen corresponding path program 1 times [2022-11-20 10:36:59,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:36:59,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948127962] [2022-11-20 10:36:59,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:36:59,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:37:00,000 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:37:00,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [437453838] [2022-11-20 10:37:00,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:37:00,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:37:00,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4dbe0ca-5671-4c37-9ccf-02fd492499a6/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:37:00,002 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4dbe0ca-5671-4c37-9ccf-02fd492499a6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:37:00,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4dbe0ca-5671-4c37-9ccf-02fd492499a6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 10:37:00,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:00,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 2193 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:37:00,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:37:01,186 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2022-11-20 10:37:01,186 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:37:01,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:37:01,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948127962] [2022-11-20 10:37:01,187 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:37:01,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437453838] [2022-11-20 10:37:01,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [437453838] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:37:01,188 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:37:01,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:37:01,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126543916] [2022-11-20 10:37:01,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:37:01,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:37:01,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:37:01,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:37:01,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:37:01,190 INFO L87 Difference]: Start difference. First operand 3236 states and 4865 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-20 10:37:01,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:37:01,679 INFO L93 Difference]: Finished difference Result 9700 states and 14595 transitions. [2022-11-20 10:37:01,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 10:37:01,679 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 171 [2022-11-20 10:37:01,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:37:01,743 INFO L225 Difference]: With dead ends: 9700 [2022-11-20 10:37:01,743 INFO L226 Difference]: Without dead ends: 6486 [2022-11-20 10:37:01,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 167 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 10:37:01,778 INFO L413 NwaCegarLoop]: 3291 mSDtfsCounter, 2419 mSDsluCounter, 8984 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2423 SdHoareTripleChecker+Valid, 12275 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 10:37:01,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2423 Valid, 12275 Invalid, 44 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:37:01,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6486 states. [2022-11-20 10:37:02,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6486 to 6447. [2022-11-20 10:37:02,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6447 states, 4098 states have (on average 1.3518789653489507) internal successors, (5540), 4281 states have internal predecessors, (5540), 2076 states have call successors, (2076), 273 states have call predecessors, (2076), 272 states have return successors, (2091), 2004 states have call predecessors, (2091), 2075 states have call successors, (2091) [2022-11-20 10:37:02,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6447 states to 6447 states and 9707 transitions. [2022-11-20 10:37:02,352 INFO L78 Accepts]: Start accepts. Automaton has 6447 states and 9707 transitions. Word has length 171 [2022-11-20 10:37:02,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:37:02,353 INFO L495 AbstractCegarLoop]: Abstraction has 6447 states and 9707 transitions. [2022-11-20 10:37:02,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-20 10:37:02,353 INFO L276 IsEmpty]: Start isEmpty. Operand 6447 states and 9707 transitions. [2022-11-20 10:37:02,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-11-20 10:37:02,365 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:37:02,365 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:37:02,379 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4dbe0ca-5671-4c37-9ccf-02fd492499a6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 10:37:02,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4dbe0ca-5671-4c37-9ccf-02fd492499a6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:37:02,575 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:37:02,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:37:02,575 INFO L85 PathProgramCache]: Analyzing trace with hash 293847414, now seen corresponding path program 1 times [2022-11-20 10:37:02,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:37:02,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981464631] [2022-11-20 10:37:02,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:37:02,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:37:02,666 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:37:02,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1774267581] [2022-11-20 10:37:02,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:37:02,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:37:02,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4dbe0ca-5671-4c37-9ccf-02fd492499a6/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:37:02,668 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4dbe0ca-5671-4c37-9ccf-02fd492499a6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:37:02,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4dbe0ca-5671-4c37-9ccf-02fd492499a6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 10:37:03,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:03,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 2197 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:37:03,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:37:03,861 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2022-11-20 10:37:03,861 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:37:03,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:37:03,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981464631] [2022-11-20 10:37:03,861 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:37:03,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1774267581] [2022-11-20 10:37:03,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1774267581] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:37:03,862 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:37:03,862 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:37:03,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714261069] [2022-11-20 10:37:03,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:37:03,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:37:03,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:37:03,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:37:03,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:37:03,864 INFO L87 Difference]: Start difference. First operand 6447 states and 9707 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-20 10:37:04,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:37:04,646 INFO L93 Difference]: Finished difference Result 19375 states and 29181 transitions. [2022-11-20 10:37:04,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 10:37:04,647 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 173 [2022-11-20 10:37:04,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:37:04,775 INFO L225 Difference]: With dead ends: 19375 [2022-11-20 10:37:04,776 INFO L226 Difference]: Without dead ends: 12950 [2022-11-20 10:37:04,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 169 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 10:37:04,825 INFO L413 NwaCegarLoop]: 2959 mSDtfsCounter, 2408 mSDsluCounter, 8306 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2412 SdHoareTripleChecker+Valid, 11265 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:37:04,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2412 Valid, 11265 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:37:04,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12950 states. [2022-11-20 10:37:05,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12950 to 12885. [2022-11-20 10:37:06,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12885 states, 8198 states have (on average 1.3522810441571116) internal successors, (11086), 8562 states have internal predecessors, (11086), 4141 states have call successors, (4141), 546 states have call predecessors, (4141), 545 states have return successors, (4188), 4000 states have call predecessors, (4188), 4140 states have call successors, (4188) [2022-11-20 10:37:06,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12885 states to 12885 states and 19415 transitions. [2022-11-20 10:37:06,235 INFO L78 Accepts]: Start accepts. Automaton has 12885 states and 19415 transitions. Word has length 173 [2022-11-20 10:37:06,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:37:06,236 INFO L495 AbstractCegarLoop]: Abstraction has 12885 states and 19415 transitions. [2022-11-20 10:37:06,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-20 10:37:06,237 INFO L276 IsEmpty]: Start isEmpty. Operand 12885 states and 19415 transitions. [2022-11-20 10:37:06,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-11-20 10:37:06,250 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:37:06,251 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:37:06,263 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4dbe0ca-5671-4c37-9ccf-02fd492499a6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 10:37:06,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4dbe0ca-5671-4c37-9ccf-02fd492499a6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:37:06,464 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:37:06,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:37:06,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1034306857, now seen corresponding path program 1 times [2022-11-20 10:37:06,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:37:06,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025765127] [2022-11-20 10:37:06,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:37:06,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:37:06,591 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:37:06,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [106529354] [2022-11-20 10:37:06,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:37:06,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:37:06,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4dbe0ca-5671-4c37-9ccf-02fd492499a6/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:37:06,593 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4dbe0ca-5671-4c37-9ccf-02fd492499a6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:37:06,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4dbe0ca-5671-4c37-9ccf-02fd492499a6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 10:37:07,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:07,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 2199 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:37:07,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:37:07,661 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2022-11-20 10:37:07,662 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:37:07,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:37:07,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025765127] [2022-11-20 10:37:07,662 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:37:07,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [106529354] [2022-11-20 10:37:07,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [106529354] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:37:07,667 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:37:07,668 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:37:07,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137448790] [2022-11-20 10:37:07,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:37:07,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:37:07,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:37:07,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:37:07,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:37:07,670 INFO L87 Difference]: Start difference. First operand 12885 states and 19415 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-20 10:37:09,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:37:09,064 INFO L93 Difference]: Finished difference Result 38603 states and 58177 transitions. [2022-11-20 10:37:09,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 10:37:09,065 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 174 [2022-11-20 10:37:09,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:37:09,267 INFO L225 Difference]: With dead ends: 38603 [2022-11-20 10:37:09,267 INFO L226 Difference]: Without dead ends: 25740 [2022-11-20 10:37:09,507 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 170 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 10:37:09,508 INFO L413 NwaCegarLoop]: 2959 mSDtfsCounter, 2407 mSDsluCounter, 8306 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2411 SdHoareTripleChecker+Valid, 11265 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:37:09,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2411 Valid, 11265 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:37:09,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25740 states. [2022-11-20 10:37:11,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25740 to 25604. [2022-11-20 10:37:11,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25604 states, 16293 states have (on average 1.3527281654698338) internal successors, (22040), 17011 states have internal predecessors, (22040), 8224 states have call successors, (8224), 1087 states have call predecessors, (8224), 1086 states have return successors, (8351), 7947 states have call predecessors, (8351), 8223 states have call successors, (8351) [2022-11-20 10:37:12,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25604 states to 25604 states and 38615 transitions. [2022-11-20 10:37:12,011 INFO L78 Accepts]: Start accepts. Automaton has 25604 states and 38615 transitions. Word has length 174 [2022-11-20 10:37:12,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:37:12,012 INFO L495 AbstractCegarLoop]: Abstraction has 25604 states and 38615 transitions. [2022-11-20 10:37:12,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-20 10:37:12,013 INFO L276 IsEmpty]: Start isEmpty. Operand 25604 states and 38615 transitions. [2022-11-20 10:37:12,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-11-20 10:37:12,035 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:37:12,035 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:37:12,050 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4dbe0ca-5671-4c37-9ccf-02fd492499a6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 10:37:12,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4dbe0ca-5671-4c37-9ccf-02fd492499a6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:37:12,245 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:37:12,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:37:12,245 INFO L85 PathProgramCache]: Analyzing trace with hash -695910732, now seen corresponding path program 1 times [2022-11-20 10:37:12,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:37:12,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985362204] [2022-11-20 10:37:12,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:37:12,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:37:12,353 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:37:12,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [190089229] [2022-11-20 10:37:12,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:37:12,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:37:12,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4dbe0ca-5671-4c37-9ccf-02fd492499a6/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:37:12,355 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4dbe0ca-5671-4c37-9ccf-02fd492499a6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:37:12,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4dbe0ca-5671-4c37-9ccf-02fd492499a6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 10:37:13,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:13,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 2258 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 10:37:13,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:37:13,310 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2022-11-20 10:37:13,310 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:37:13,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:37:13,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985362204] [2022-11-20 10:37:13,311 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:37:13,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [190089229] [2022-11-20 10:37:13,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [190089229] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:37:13,311 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:37:13,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 10:37:13,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444102192] [2022-11-20 10:37:13,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:37:13,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:37:13,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:37:13,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:37:13,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:37:13,314 INFO L87 Difference]: Start difference. First operand 25604 states and 38615 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-20 10:37:15,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:37:15,805 INFO L93 Difference]: Finished difference Result 64150 states and 96699 transitions. [2022-11-20 10:37:15,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 10:37:15,805 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) Word has length 184 [2022-11-20 10:37:15,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:37:16,094 INFO L225 Difference]: With dead ends: 64150 [2022-11-20 10:37:16,094 INFO L226 Difference]: Without dead ends: 38568 [2022-11-20 10:37:16,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2022-11-20 10:37:16,245 INFO L413 NwaCegarLoop]: 3530 mSDtfsCounter, 2461 mSDsluCounter, 16510 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2465 SdHoareTripleChecker+Valid, 20040 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:37:16,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2465 Valid, 20040 Invalid, 79 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:37:16,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38568 states. [2022-11-20 10:37:19,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38568 to 38219. [2022-11-20 10:37:19,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38219 states, 24300 states have (on average 1.3531687242798354) internal successors, (32882), 25376 states have internal predecessors, (32882), 12295 states have call successors, (12295), 1616 states have call predecessors, (12295), 1623 states have return successors, (12522), 11886 states have call predecessors, (12522), 12294 states have call successors, (12522) [2022-11-20 10:37:20,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38219 states to 38219 states and 57699 transitions. [2022-11-20 10:37:20,045 INFO L78 Accepts]: Start accepts. Automaton has 38219 states and 57699 transitions. Word has length 184 [2022-11-20 10:37:20,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:37:20,046 INFO L495 AbstractCegarLoop]: Abstraction has 38219 states and 57699 transitions. [2022-11-20 10:37:20,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-20 10:37:20,046 INFO L276 IsEmpty]: Start isEmpty. Operand 38219 states and 57699 transitions. [2022-11-20 10:37:20,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-11-20 10:37:20,079 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:37:20,079 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:37:20,096 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4dbe0ca-5671-4c37-9ccf-02fd492499a6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 10:37:20,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4dbe0ca-5671-4c37-9ccf-02fd492499a6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:37:20,290 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:37:20,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:37:20,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1719604644, now seen corresponding path program 1 times [2022-11-20 10:37:20,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:37:20,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685279944] [2022-11-20 10:37:20,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:37:20,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:37:20,396 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:37:20,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1075201193] [2022-11-20 10:37:20,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:37:20,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:37:20,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4dbe0ca-5671-4c37-9ccf-02fd492499a6/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:37:20,398 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4dbe0ca-5671-4c37-9ccf-02fd492499a6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:37:20,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4dbe0ca-5671-4c37-9ccf-02fd492499a6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 10:37:21,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:21,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 2260 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 10:37:21,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:37:21,378 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2022-11-20 10:37:21,379 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:37:21,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:37:21,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685279944] [2022-11-20 10:37:21,379 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:37:21,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1075201193] [2022-11-20 10:37:21,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1075201193] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:37:21,380 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:37:21,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 10:37:21,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561682606] [2022-11-20 10:37:21,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:37:21,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:37:21,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:37:21,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:37:21,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:37:21,383 INFO L87 Difference]: Start difference. First operand 38219 states and 57699 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-20 10:37:23,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:37:23,998 INFO L93 Difference]: Finished difference Result 89521 states and 135017 transitions. [2022-11-20 10:37:23,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 10:37:23,999 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) Word has length 185 [2022-11-20 10:37:23,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:37:24,437 INFO L225 Difference]: With dead ends: 89521 [2022-11-20 10:37:24,437 INFO L226 Difference]: Without dead ends: 51324 [2022-11-20 10:37:24,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2022-11-20 10:37:24,655 INFO L413 NwaCegarLoop]: 3536 mSDtfsCounter, 2461 mSDsluCounter, 16534 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2465 SdHoareTripleChecker+Valid, 20070 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:37:24,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2465 Valid, 20070 Invalid, 80 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:37:24,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51324 states. [2022-11-20 10:37:28,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51324 to 50962. [2022-11-20 10:37:28,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50962 states, 32403 states have (on average 1.3528377002129433) internal successors, (43836), 33861 states have internal predecessors, (43836), 16374 states have call successors, (16374), 2153 states have call predecessors, (16374), 2184 states have return successors, (16717), 15825 states have call predecessors, (16717), 16373 states have call successors, (16717) [2022-11-20 10:37:28,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50962 states to 50962 states and 76927 transitions. [2022-11-20 10:37:28,871 INFO L78 Accepts]: Start accepts. Automaton has 50962 states and 76927 transitions. Word has length 185 [2022-11-20 10:37:28,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:37:28,872 INFO L495 AbstractCegarLoop]: Abstraction has 50962 states and 76927 transitions. [2022-11-20 10:37:28,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-20 10:37:28,873 INFO L276 IsEmpty]: Start isEmpty. Operand 50962 states and 76927 transitions. [2022-11-20 10:37:28,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-11-20 10:37:28,911 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:37:28,912 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:37:28,931 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4dbe0ca-5671-4c37-9ccf-02fd492499a6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 10:37:29,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4dbe0ca-5671-4c37-9ccf-02fd492499a6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-20 10:37:29,127 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:37:29,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:37:29,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1947413619, now seen corresponding path program 1 times [2022-11-20 10:37:29,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:37:29,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118291256] [2022-11-20 10:37:29,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:37:29,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:37:29,213 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:37:29,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [343633968] [2022-11-20 10:37:29,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:37:29,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:37:29,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4dbe0ca-5671-4c37-9ccf-02fd492499a6/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:37:29,215 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4dbe0ca-5671-4c37-9ccf-02fd492499a6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:37:29,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4dbe0ca-5671-4c37-9ccf-02fd492499a6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 10:37:30,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:30,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 2262 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 10:37:30,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:37:30,156 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2022-11-20 10:37:30,156 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:37:30,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:37:30,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118291256] [2022-11-20 10:37:30,157 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:37:30,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [343633968] [2022-11-20 10:37:30,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [343633968] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:37:30,157 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:37:30,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 10:37:30,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197701639] [2022-11-20 10:37:30,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:37:30,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:37:30,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:37:30,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:37:30,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:37:30,160 INFO L87 Difference]: Start difference. First operand 50962 states and 76927 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-20 10:37:33,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:37:33,288 INFO L93 Difference]: Finished difference Result 114988 states and 173447 transitions. [2022-11-20 10:37:33,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 10:37:33,289 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) Word has length 186 [2022-11-20 10:37:33,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:37:33,683 INFO L225 Difference]: With dead ends: 114988 [2022-11-20 10:37:33,683 INFO L226 Difference]: Without dead ends: 64048 [2022-11-20 10:37:34,139 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2022-11-20 10:37:34,140 INFO L413 NwaCegarLoop]: 3542 mSDtfsCounter, 2461 mSDsluCounter, 16558 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2465 SdHoareTripleChecker+Valid, 20100 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:37:34,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2465 Valid, 20100 Invalid, 80 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:37:34,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64048 states. [2022-11-20 10:37:36,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64048 to 51000. [2022-11-20 10:37:36,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51000 states, 32431 states have (on average 1.3525330702106009) internal successors, (43864), 33891 states have internal predecessors, (43864), 16374 states have call successors, (16374), 2153 states have call predecessors, (16374), 2194 states have return successors, (16730), 15833 states have call predecessors, (16730), 16373 states have call successors, (16730) [2022-11-20 10:37:37,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51000 states to 51000 states and 76968 transitions. [2022-11-20 10:37:37,804 INFO L78 Accepts]: Start accepts. Automaton has 51000 states and 76968 transitions. Word has length 186 [2022-11-20 10:37:37,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:37:37,805 INFO L495 AbstractCegarLoop]: Abstraction has 51000 states and 76968 transitions. [2022-11-20 10:37:37,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-20 10:37:37,805 INFO L276 IsEmpty]: Start isEmpty. Operand 51000 states and 76968 transitions. [2022-11-20 10:37:37,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2022-11-20 10:37:37,842 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:37:37,842 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:37:37,862 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4dbe0ca-5671-4c37-9ccf-02fd492499a6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-20 10:37:38,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4dbe0ca-5671-4c37-9ccf-02fd492499a6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-20 10:37:38,053 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:37:38,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:37:38,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1022373973, now seen corresponding path program 1 times [2022-11-20 10:37:38,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:37:38,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786837446] [2022-11-20 10:37:38,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:37:38,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:37:38,141 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:37:38,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2052949434] [2022-11-20 10:37:38,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:37:38,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:37:38,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4dbe0ca-5671-4c37-9ccf-02fd492499a6/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:37:38,143 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4dbe0ca-5671-4c37-9ccf-02fd492499a6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:37:38,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4dbe0ca-5671-4c37-9ccf-02fd492499a6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-20 10:37:39,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:39,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 2264 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 10:37:39,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:37:39,127 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2022-11-20 10:37:39,127 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:37:39,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:37:39,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786837446] [2022-11-20 10:37:39,128 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:37:39,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2052949434] [2022-11-20 10:37:39,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2052949434] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:37:39,128 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:37:39,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 10:37:39,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498472407] [2022-11-20 10:37:39,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:37:39,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:37:39,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:37:39,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:37:39,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:37:39,131 INFO L87 Difference]: Start difference. First operand 51000 states and 76968 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-20 10:37:41,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:37:41,319 INFO L93 Difference]: Finished difference Result 115042 states and 173504 transitions. [2022-11-20 10:37:41,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 10:37:41,320 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) Word has length 187 [2022-11-20 10:37:41,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:37:41,768 INFO L225 Difference]: With dead ends: 115042 [2022-11-20 10:37:41,769 INFO L226 Difference]: Without dead ends: 64064 [2022-11-20 10:37:42,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2022-11-20 10:37:42,335 INFO L413 NwaCegarLoop]: 3536 mSDtfsCounter, 2461 mSDsluCounter, 16534 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2465 SdHoareTripleChecker+Valid, 20070 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:37:42,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2465 Valid, 20070 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:37:42,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64064 states. [2022-11-20 10:37:45,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64064 to 51029. [2022-11-20 10:37:45,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51029 states, 32453 states have (on average 1.3522940868332665) internal successors, (43886), 33912 states have internal predecessors, (43886), 16374 states have call successors, (16374), 2153 states have call predecessors, (16374), 2201 states have return successors, (16737), 15841 states have call predecessors, (16737), 16373 states have call successors, (16737) [2022-11-20 10:37:45,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51029 states to 51029 states and 76997 transitions. [2022-11-20 10:37:45,353 INFO L78 Accepts]: Start accepts. Automaton has 51029 states and 76997 transitions. Word has length 187 [2022-11-20 10:37:45,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:37:45,354 INFO L495 AbstractCegarLoop]: Abstraction has 51029 states and 76997 transitions. [2022-11-20 10:37:45,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-20 10:37:45,354 INFO L276 IsEmpty]: Start isEmpty. Operand 51029 states and 76997 transitions. [2022-11-20 10:37:45,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2022-11-20 10:37:45,383 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:37:45,383 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:37:45,393 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4dbe0ca-5671-4c37-9ccf-02fd492499a6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-11-20 10:37:45,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4dbe0ca-5671-4c37-9ccf-02fd492499a6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:37:45,592 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:37:45,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:37:45,593 INFO L85 PathProgramCache]: Analyzing trace with hash -765644276, now seen corresponding path program 1 times [2022-11-20 10:37:45,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:37:45,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34243993] [2022-11-20 10:37:45,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:37:45,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:37:45,706 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:37:45,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1625557837] [2022-11-20 10:37:45,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:37:45,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:37:45,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4dbe0ca-5671-4c37-9ccf-02fd492499a6/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:37:45,708 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4dbe0ca-5671-4c37-9ccf-02fd492499a6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:37:45,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4dbe0ca-5671-4c37-9ccf-02fd492499a6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-20 10:37:46,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:46,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 2266 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 10:37:46,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:37:46,880 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2022-11-20 10:37:46,880 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:37:47,271 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2022-11-20 10:37:47,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:37:47,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34243993] [2022-11-20 10:37:47,272 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:37:47,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1625557837] [2022-11-20 10:37:47,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1625557837] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:37:47,272 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:37:47,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 11 [2022-11-20 10:37:47,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687965758] [2022-11-20 10:37:47,273 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:37:47,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 10:37:47,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:37:47,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 10:37:47,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-20 10:37:47,275 INFO L87 Difference]: Start difference. First operand 51029 states and 76997 transitions. Second operand has 11 states, 11 states have (on average 9.818181818181818) internal successors, (108), 9 states have internal predecessors, (108), 4 states have call successors, (42), 4 states have call predecessors, (42), 5 states have return successors, (36), 4 states have call predecessors, (36), 3 states have call successors, (36) [2022-11-20 10:37:59,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:37:59,285 INFO L93 Difference]: Finished difference Result 128241 states and 193371 transitions. [2022-11-20 10:37:59,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-20 10:37:59,285 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.818181818181818) internal successors, (108), 9 states have internal predecessors, (108), 4 states have call successors, (42), 4 states have call predecessors, (42), 5 states have return successors, (36), 4 states have call predecessors, (36), 3 states have call successors, (36) Word has length 187 [2022-11-20 10:37:59,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:37:59,662 INFO L225 Difference]: With dead ends: 128241 [2022-11-20 10:37:59,662 INFO L226 Difference]: Without dead ends: 77234 [2022-11-20 10:37:59,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 360 SyntacticMatches, 5 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 383 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=304, Invalid=1102, Unknown=0, NotChecked=0, Total=1406 [2022-11-20 10:37:59,859 INFO L413 NwaCegarLoop]: 4759 mSDtfsCounter, 7421 mSDsluCounter, 29518 mSDsCounter, 0 mSdLazyCounter, 6155 mSolverCounterSat, 2146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7435 SdHoareTripleChecker+Valid, 34277 SdHoareTripleChecker+Invalid, 8301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 2146 IncrementalHoareTripleChecker+Valid, 6155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2022-11-20 10:37:59,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7435 Valid, 34277 Invalid, 8301 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [2146 Valid, 6155 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2022-11-20 10:37:59,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77234 states. [2022-11-20 10:38:03,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77234 to 51317. [2022-11-20 10:38:03,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51317 states, 32633 states have (on average 1.35084117304569) internal successors, (44082), 34108 states have internal predecessors, (44082), 16470 states have call successors, (16470), 2153 states have call predecessors, (16470), 2213 states have return successors, (16861), 15933 states have call predecessors, (16861), 16469 states have call successors, (16861) [2022-11-20 10:38:03,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51317 states to 51317 states and 77413 transitions. [2022-11-20 10:38:03,438 INFO L78 Accepts]: Start accepts. Automaton has 51317 states and 77413 transitions. Word has length 187 [2022-11-20 10:38:03,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:38:03,438 INFO L495 AbstractCegarLoop]: Abstraction has 51317 states and 77413 transitions. [2022-11-20 10:38:03,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.818181818181818) internal successors, (108), 9 states have internal predecessors, (108), 4 states have call successors, (42), 4 states have call predecessors, (42), 5 states have return successors, (36), 4 states have call predecessors, (36), 3 states have call successors, (36) [2022-11-20 10:38:03,439 INFO L276 IsEmpty]: Start isEmpty. Operand 51317 states and 77413 transitions. [2022-11-20 10:38:03,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-20 10:38:03,468 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:38:03,468 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:38:03,484 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4dbe0ca-5671-4c37-9ccf-02fd492499a6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-20 10:38:03,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4dbe0ca-5671-4c37-9ccf-02fd492499a6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-20 10:38:03,679 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:38:03,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:38:03,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1365340739, now seen corresponding path program 1 times [2022-11-20 10:38:03,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:38:03,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244714813] [2022-11-20 10:38:03,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:38:03,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:38:03,801 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:38:03,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1352275672] [2022-11-20 10:38:03,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:38:03,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:38:03,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4dbe0ca-5671-4c37-9ccf-02fd492499a6/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:38:03,803 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4dbe0ca-5671-4c37-9ccf-02fd492499a6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:38:03,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4dbe0ca-5671-4c37-9ccf-02fd492499a6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-20 10:38:04,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:38:04,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 2268 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 10:38:04,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:38:04,950 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2022-11-20 10:38:04,950 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:38:05,250 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2022-11-20 10:38:05,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:38:05,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244714813] [2022-11-20 10:38:05,250 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:38:05,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1352275672] [2022-11-20 10:38:05,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1352275672] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:38:05,251 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:38:05,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 11 [2022-11-20 10:38:05,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367515588] [2022-11-20 10:38:05,251 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:38:05,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 10:38:05,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:38:05,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 10:38:05,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-20 10:38:05,254 INFO L87 Difference]: Start difference. First operand 51317 states and 77413 transitions. Second operand has 11 states, 11 states have (on average 9.909090909090908) internal successors, (109), 9 states have internal predecessors, (109), 4 states have call successors, (42), 4 states have call predecessors, (42), 5 states have return successors, (36), 4 states have call predecessors, (36), 3 states have call successors, (36)