./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--media--usb--em28xx--em28xx.ko-ldv_main0.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4601069a-2da8-4d96-b950-52ce9ec14964/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4601069a-2da8-4d96-b950-52ce9ec14964/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4601069a-2da8-4d96-b950-52ce9ec14964/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4601069a-2da8-4d96-b950-52ce9ec14964/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--media--usb--em28xx--em28xx.ko-ldv_main0.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4601069a-2da8-4d96-b950-52ce9ec14964/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4601069a-2da8-4d96-b950-52ce9ec14964/bin/uautomizer-Dbtcem3rbc --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 213c19133f8e1eb8e04c1430c89bd3923e29e833639b74dc68815899bbf3f9fa --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 20:26:30,947 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:26:30,949 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:26:30,982 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:26:30,982 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:26:30,984 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:26:30,985 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:26:30,987 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:26:30,988 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:26:30,989 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:26:30,990 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:26:30,993 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:26:30,994 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:26:30,998 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:26:31,000 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:26:31,002 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:26:31,004 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:26:31,010 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:26:31,011 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:26:31,013 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:26:31,017 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:26:31,019 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:26:31,020 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:26:31,022 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:26:31,026 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:26:31,032 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:26:31,033 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:26:31,034 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:26:31,035 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:26:31,037 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:26:31,038 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:26:31,039 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:26:31,040 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:26:31,042 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:26:31,044 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:26:31,045 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:26:31,046 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:26:31,046 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:26:31,046 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:26:31,047 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:26:31,048 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:26:31,049 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4601069a-2da8-4d96-b950-52ce9ec14964/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-02 20:26:31,087 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:26:31,091 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:26:31,092 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:26:31,092 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:26:31,093 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:26:31,093 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:26:31,094 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:26:31,094 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:26:31,094 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:26:31,095 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:26:31,096 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:26:31,096 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:26:31,096 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:26:31,096 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:26:31,096 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:26:31,096 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:26:31,097 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:26:31,097 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:26:31,097 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:26:31,097 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:26:31,097 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:26:31,098 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:26:31,098 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:26:31,098 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:26:31,098 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:26:31,098 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:26:31,099 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:26:31,099 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:26:31,099 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:26:31,099 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:26:31,099 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_4601069a-2da8-4d96-b950-52ce9ec14964/bin/uautomizer-Dbtcem3rbc/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4601069a-2da8-4d96-b950-52ce9ec14964/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 213c19133f8e1eb8e04c1430c89bd3923e29e833639b74dc68815899bbf3f9fa [2022-11-02 20:26:31,436 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:26:31,483 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:26:31,485 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:26:31,487 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:26:31,490 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:26:31,491 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4601069a-2da8-4d96-b950-52ce9ec14964/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--media--usb--em28xx--em28xx.ko-ldv_main0.cil.out.i [2022-11-02 20:26:31,564 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4601069a-2da8-4d96-b950-52ce9ec14964/bin/uautomizer-Dbtcem3rbc/data/e73d00117/e6124e914ec24052b2be414da334fa51/FLAG9755ded3f [2022-11-02 20:26:32,780 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:26:32,781 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4601069a-2da8-4d96-b950-52ce9ec14964/sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--media--usb--em28xx--em28xx.ko-ldv_main0.cil.out.i [2022-11-02 20:26:32,868 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4601069a-2da8-4d96-b950-52ce9ec14964/bin/uautomizer-Dbtcem3rbc/data/e73d00117/e6124e914ec24052b2be414da334fa51/FLAG9755ded3f [2022-11-02 20:26:32,997 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4601069a-2da8-4d96-b950-52ce9ec14964/bin/uautomizer-Dbtcem3rbc/data/e73d00117/e6124e914ec24052b2be414da334fa51 [2022-11-02 20:26:33,000 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:26:33,003 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:26:33,009 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:26:33,009 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:26:33,013 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:26:33,014 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:26:32" (1/1) ... [2022-11-02 20:26:33,017 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@342e96c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:26:33, skipping insertion in model container [2022-11-02 20:26:33,017 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:26:32" (1/1) ... [2022-11-02 20:26:33,025 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:26:33,233 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:26:37,340 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4601069a-2da8-4d96-b950-52ce9ec14964/sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--media--usb--em28xx--em28xx.ko-ldv_main0.cil.out.i[553894,553907] [2022-11-02 20:26:37,625 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:26:37,882 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:26:39,475 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4601069a-2da8-4d96-b950-52ce9ec14964/sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--media--usb--em28xx--em28xx.ko-ldv_main0.cil.out.i[553894,553907] [2022-11-02 20:26:39,490 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:26:39,796 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:26:39,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:26:39 WrapperNode [2022-11-02 20:26:39,799 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:26:39,800 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:26:39,801 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:26:39,802 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:26:39,810 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:26:39" (1/1) ... [2022-11-02 20:26:40,162 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:26:39" (1/1) ... [2022-11-02 20:26:40,795 INFO L138 Inliner]: procedures = 457, calls = 15318, calls flagged for inlining = 154, calls inlined = 76, statements flattened = 12878 [2022-11-02 20:26:40,796 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:26:40,797 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:26:40,797 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:26:40,798 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:26:40,816 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:26:39" (1/1) ... [2022-11-02 20:26:40,820 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:26:39" (1/1) ... [2022-11-02 20:26:40,937 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:26:39" (1/1) ... [2022-11-02 20:26:40,938 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:26:39" (1/1) ... [2022-11-02 20:26:41,301 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:26:39" (1/1) ... [2022-11-02 20:26:41,334 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:26:39" (1/1) ... [2022-11-02 20:26:41,559 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:26:39" (1/1) ... [2022-11-02 20:26:41,592 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:26:39" (1/1) ... [2022-11-02 20:26:41,663 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:26:41,665 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:26:41,665 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:26:41,665 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:26:41,666 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:26:39" (1/1) ... [2022-11-02 20:26:41,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:26:41,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4601069a-2da8-4d96-b950-52ce9ec14964/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:26:41,704 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4601069a-2da8-4d96-b950-52ce9ec14964/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:26:41,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4601069a-2da8-4d96-b950-52ce9ec14964/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:26:41,769 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2022-11-02 20:26:41,769 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2022-11-02 20:26:41,769 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_write_regs [2022-11-02 20:26:41,770 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_write_regs [2022-11-02 20:26:41,770 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_capture_area_set [2022-11-02 20:26:41,770 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_capture_area_set [2022-11-02 20:26:41,770 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_alloc_urbs [2022-11-02 20:26:41,770 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_alloc_urbs [2022-11-02 20:26:41,770 INFO L130 BoogieDeclarations]: Found specification of procedure usb_put_dev [2022-11-02 20:26:41,771 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_put_dev [2022-11-02 20:26:41,771 INFO L130 BoogieDeclarations]: Found specification of procedure vb2_fop_mmap [2022-11-02 20:26:41,771 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-02 20:26:41,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-02 20:26:41,771 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_stop_streaming [2022-11-02 20:26:41,772 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_stop_streaming [2022-11-02 20:26:41,772 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_device_unregister [2022-11-02 20:26:41,772 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_device_unregister [2022-11-02 20:26:41,772 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2022-11-02 20:26:41,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2022-11-02 20:26:41,772 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-02 20:26:41,773 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-02 20:26:41,773 INFO L130 BoogieDeclarations]: Found specification of procedure res_free [2022-11-02 20:26:41,773 INFO L138 BoogieDeclarations]: Found implementation of procedure res_free [2022-11-02 20:26:41,773 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-02 20:26:41,773 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-02 20:26:41,774 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_write_ac97 [2022-11-02 20:26:41,774 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_write_ac97 [2022-11-02 20:26:41,774 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_em28xx [2022-11-02 20:26:41,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_em28xx [2022-11-02 20:26:41,774 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_handler_free [2022-11-02 20:26:41,774 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_handler_free [2022-11-02 20:26:41,775 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-02 20:26:41,775 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-02 20:26:41,775 INFO L130 BoogieDeclarations]: Found specification of procedure arch_irqs_disabled_flags [2022-11-02 20:26:41,775 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_irqs_disabled_flags [2022-11-02 20:26:41,775 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_g_frequency [2022-11-02 20:26:41,775 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_g_frequency [2022-11-02 20:26:41,776 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-02 20:26:41,776 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-02 20:26:41,776 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_g_register [2022-11-02 20:26:41,776 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_g_register [2022-11-02 20:26:41,777 INFO L130 BoogieDeclarations]: Found specification of procedure video_devdata [2022-11-02 20:26:41,777 INFO L138 BoogieDeclarations]: Found implementation of procedure video_devdata [2022-11-02 20:26:41,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:26:41,778 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_vbi_supported [2022-11-02 20:26:41,778 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_vbi_supported [2022-11-02 20:26:41,778 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2022-11-02 20:26:41,778 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2022-11-02 20:26:41,778 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-02 20:26:41,779 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-02 20:26:41,779 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_copy_video [2022-11-02 20:26:41,779 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_copy_video [2022-11-02 20:26:41,779 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_gpio_set [2022-11-02 20:26:41,780 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_gpio_set [2022-11-02 20:26:41,780 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_g_chip_ident [2022-11-02 20:26:41,781 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_g_chip_ident [2022-11-02 20:26:41,781 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~v4l2_std_id~0~TO~int [2022-11-02 20:26:41,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~v4l2_std_id~0~TO~int [2022-11-02 20:26:41,782 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_try_fmt_vid_cap [2022-11-02 20:26:41,783 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_try_fmt_vid_cap [2022-11-02 20:26:41,783 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_read_reg_req [2022-11-02 20:26:41,783 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_read_reg_req [2022-11-02 20:26:41,783 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-02 20:26:41,783 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_ctrl_urb_lock_of_em28xx [2022-11-02 20:26:41,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_ctrl_urb_lock_of_em28xx [2022-11-02 20:26:41,784 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2022-11-02 20:26:41,784 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2022-11-02 20:26:41,784 INFO L130 BoogieDeclarations]: Found specification of procedure vb2_buffer_done [2022-11-02 20:26:41,785 INFO L138 BoogieDeclarations]: Found implementation of procedure vb2_buffer_done [2022-11-02 20:26:41,785 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~int [2022-11-02 20:26:41,785 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~int [2022-11-02 20:26:41,785 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_ctrl_urb_lock_of_em28xx [2022-11-02 20:26:41,785 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_ctrl_urb_lock_of_em28xx [2022-11-02 20:26:41,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-02 20:26:41,786 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u32~0~X~~u32~0~X~~u32~0~TO~int [2022-11-02 20:26:41,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u32~0~X~~u32~0~X~~u32~0~TO~int [2022-11-02 20:26:41,787 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2022-11-02 20:26:41,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2022-11-02 20:26:41,787 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:26:41,787 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_i2c_unregister [2022-11-02 20:26:41,788 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_i2c_unregister [2022-11-02 20:26:41,788 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-02 20:26:41,788 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-02 20:26:41,788 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-11-02 20:26:41,788 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-11-02 20:26:41,788 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_write_reg [2022-11-02 20:26:41,789 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_write_reg [2022-11-02 20:26:41,789 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2022-11-02 20:26:41,789 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2022-11-02 20:26:41,790 INFO L130 BoogieDeclarations]: Found specification of procedure video_is_registered [2022-11-02 20:26:41,790 INFO L138 BoogieDeclarations]: Found implementation of procedure video_is_registered [2022-11-02 20:26:41,791 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_subscribe_event [2022-11-02 20:26:41,791 INFO L130 BoogieDeclarations]: Found specification of procedure video_unregister_device [2022-11-02 20:26:41,791 INFO L138 BoogieDeclarations]: Found implementation of procedure video_unregister_device [2022-11-02 20:26:41,791 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-02 20:26:41,791 INFO L130 BoogieDeclarations]: Found specification of procedure video_mux [2022-11-02 20:26:41,792 INFO L138 BoogieDeclarations]: Found implementation of procedure video_mux [2022-11-02 20:26:41,793 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:26:41,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-02 20:26:41,793 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-02 20:26:41,794 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_audio_analog_set [2022-11-02 20:26:41,794 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_audio_analog_set [2022-11-02 20:26:41,794 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-02 20:26:41,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-02 20:26:41,794 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2022-11-02 20:26:41,795 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2022-11-02 20:26:41,795 INFO L130 BoogieDeclarations]: Found specification of procedure buffer_prepare [2022-11-02 20:26:41,795 INFO L138 BoogieDeclarations]: Found implementation of procedure buffer_prepare [2022-11-02 20:26:41,795 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_start_analog_streaming [2022-11-02 20:26:41,795 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_start_analog_streaming [2022-11-02 20:26:41,795 INFO L130 BoogieDeclarations]: Found specification of procedure format_by_fourcc [2022-11-02 20:26:41,796 INFO L138 BoogieDeclarations]: Found implementation of procedure format_by_fourcc [2022-11-02 20:26:41,796 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_read_reg [2022-11-02 20:26:41,796 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_read_reg [2022-11-02 20:26:41,797 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_reg_len [2022-11-02 20:26:41,797 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_reg_len [2022-11-02 20:26:41,797 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2022-11-02 20:26:41,798 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2022-11-02 20:26:41,798 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_event_unsubscribe [2022-11-02 20:26:41,801 INFO L130 BoogieDeclarations]: Found specification of procedure get_ressource [2022-11-02 20:26:41,801 INFO L138 BoogieDeclarations]: Found implementation of procedure get_ressource [2022-11-02 20:26:41,802 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_save_flags [2022-11-02 20:26:41,802 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_save_flags [2022-11-02 20:26:41,803 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_set_outfmt [2022-11-02 20:26:41,804 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_set_outfmt [2022-11-02 20:26:41,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:26:41,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:26:41,805 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2022-11-02 20:26:41,811 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2022-11-02 20:26:41,811 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-02 20:26:41,811 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-02 20:26:41,811 INFO L130 BoogieDeclarations]: Found specification of procedure vb2_set_plane_payload [2022-11-02 20:26:41,811 INFO L138 BoogieDeclarations]: Found implementation of procedure vb2_set_plane_payload [2022-11-02 20:26:41,812 INFO L130 BoogieDeclarations]: Found specification of procedure vb2_fop_poll [2022-11-02 20:26:41,812 INFO L130 BoogieDeclarations]: Found specification of procedure usb_translate_errors [2022-11-02 20:26:41,812 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_translate_errors [2022-11-02 20:26:41,812 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-02 20:26:41,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-02 20:26:41,812 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_interface [2022-11-02 20:26:41,813 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_interface [2022-11-02 20:26:41,813 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_v4l2_close [2022-11-02 20:26:41,813 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_v4l2_close [2022-11-02 20:26:41,813 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_read_reg_req_len [2022-11-02 20:26:41,813 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_read_reg_req_len [2022-11-02 20:26:41,813 INFO L130 BoogieDeclarations]: Found specification of procedure video_device_release [2022-11-02 20:26:41,813 INFO L138 BoogieDeclarations]: Found implementation of procedure video_device_release [2022-11-02 20:26:41,814 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_write_reg_bits [2022-11-02 20:26:41,814 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_write_reg_bits [2022-11-02 20:26:41,814 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-02 20:26:41,814 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-02 20:26:41,814 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-02 20:26:41,814 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-02 20:26:41,814 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u32~0~TO~int [2022-11-02 20:26:41,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u32~0~TO~int [2022-11-02 20:26:41,815 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_s_ctrl [2022-11-02 20:26:41,815 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_s_ctrl [2022-11-02 20:26:41,815 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-02 20:26:41,815 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-02 20:26:41,815 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_s_frequency [2022-11-02 20:26:41,815 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_s_frequency [2022-11-02 20:26:41,816 INFO L130 BoogieDeclarations]: Found specification of procedure vbi_buffer_prepare [2022-11-02 20:26:41,816 INFO L138 BoogieDeclarations]: Found implementation of procedure vbi_buffer_prepare [2022-11-02 20:26:41,816 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_release_resources [2022-11-02 20:26:41,816 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_release_resources [2022-11-02 20:26:41,816 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-11-02 20:26:41,816 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-11-02 20:26:41,816 INFO L130 BoogieDeclarations]: Found specification of procedure video_drvdata [2022-11-02 20:26:41,817 INFO L138 BoogieDeclarations]: Found implementation of procedure video_drvdata [2022-11-02 20:26:41,817 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_em28xx [2022-11-02 20:26:41,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_em28xx [2022-11-02 20:26:41,817 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_write_regs_req [2022-11-02 20:26:41,817 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_write_regs_req [2022-11-02 20:26:41,817 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:26:41,817 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unlink_urb [2022-11-02 20:26:41,818 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unlink_urb [2022-11-02 20:26:41,818 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-02 20:26:41,818 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_g_chip_info [2022-11-02 20:26:41,818 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_g_chip_info [2022-11-02 20:26:41,818 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_set_video_format [2022-11-02 20:26:41,818 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_set_video_format [2022-11-02 20:26:41,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-02 20:26:41,819 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_set_mode [2022-11-02 20:26:41,819 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_set_mode [2022-11-02 20:26:41,819 INFO L130 BoogieDeclarations]: Found specification of procedure video_device_node_name [2022-11-02 20:26:41,819 INFO L138 BoogieDeclarations]: Found implementation of procedure video_device_node_name [2022-11-02 20:26:41,819 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-02 20:26:41,819 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-02 20:26:41,820 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-11-02 20:26:41,820 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-11-02 20:26:41,820 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_resolution_set [2022-11-02 20:26:41,820 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_resolution_set [2022-11-02 20:26:41,820 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2022-11-02 20:26:41,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2022-11-02 20:26:41,820 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_is_ac97_ready [2022-11-02 20:26:41,821 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_is_ac97_ready [2022-11-02 20:26:41,821 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2022-11-02 20:26:41,821 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2022-11-02 20:26:41,821 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_querycap [2022-11-02 20:26:41,821 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_querycap [2022-11-02 20:26:41,821 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_v4l2_open [2022-11-02 20:26:41,821 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_v4l2_open [2022-11-02 20:26:41,822 INFO L130 BoogieDeclarations]: Found specification of procedure vb2_plane_size [2022-11-02 20:26:41,822 INFO L138 BoogieDeclarations]: Found implementation of procedure vb2_plane_size [2022-11-02 20:26:41,822 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-11-02 20:26:41,822 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-11-02 20:26:41,822 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u8~0~X~~u16~0~X~$Pointer$~X~int~TO~int [2022-11-02 20:26:41,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u8~0~X~~u16~0~X~$Pointer$~X~int~TO~int [2022-11-02 20:26:41,822 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-02 20:26:41,823 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-02 20:26:41,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:26:41,823 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-02 20:26:41,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-02 20:26:41,823 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_uninit_usb_xfer [2022-11-02 20:26:41,823 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_uninit_usb_xfer [2022-11-02 20:26:41,823 INFO L130 BoogieDeclarations]: Found specification of procedure finish_field_prepare_next [2022-11-02 20:26:41,824 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_field_prepare_next [2022-11-02 20:26:41,824 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_read_ac97 [2022-11-02 20:26:41,824 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_read_ac97 [2022-11-02 20:26:41,824 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_wake_i2c [2022-11-02 20:26:41,824 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_wake_i2c [2022-11-02 20:26:41,824 INFO L130 BoogieDeclarations]: Found specification of procedure size_to_scale [2022-11-02 20:26:41,825 INFO L138 BoogieDeclarations]: Found implementation of procedure size_to_scale [2022-11-02 20:26:41,825 INFO L130 BoogieDeclarations]: Found specification of procedure vb2_get_drv_priv [2022-11-02 20:26:41,825 INFO L138 BoogieDeclarations]: Found implementation of procedure vb2_get_drv_priv [2022-11-02 20:26:41,825 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_s_register [2022-11-02 20:26:41,825 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_s_register [2022-11-02 20:26:41,825 INFO L130 BoogieDeclarations]: Found specification of procedure scale_to_size [2022-11-02 20:26:41,825 INFO L138 BoogieDeclarations]: Found implementation of procedure scale_to_size [2022-11-02 20:26:41,826 INFO L130 BoogieDeclarations]: Found specification of procedure print_err_status [2022-11-02 20:26:41,826 INFO L138 BoogieDeclarations]: Found implementation of procedure print_err_status [2022-11-02 20:26:41,826 INFO L130 BoogieDeclarations]: Found specification of procedure norm_maxw [2022-11-02 20:26:41,826 INFO L138 BoogieDeclarations]: Found implementation of procedure norm_maxw [2022-11-02 20:26:41,826 INFO L130 BoogieDeclarations]: Found specification of procedure norm_maxh [2022-11-02 20:26:41,826 INFO L138 BoogieDeclarations]: Found implementation of procedure norm_maxh [2022-11-02 20:26:41,827 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-02 20:26:41,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-02 20:26:41,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:26:41,827 INFO L130 BoogieDeclarations]: Found specification of procedure vb2_plane_vaddr [2022-11-02 20:26:41,827 INFO L138 BoogieDeclarations]: Found implementation of procedure vb2_plane_vaddr [2022-11-02 20:26:41,827 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-02 20:26:41,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-02 20:26:41,828 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_capture_start [2022-11-02 20:26:41,828 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_capture_start [2022-11-02 20:26:42,914 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:26:42,917 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:27:15,676 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:27:15,696 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:27:15,697 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 20:27:15,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:27:15 BoogieIcfgContainer [2022-11-02 20:27:15,701 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:27:15,703 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:27:15,704 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:27:15,709 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:27:15,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:26:32" (1/3) ... [2022-11-02 20:27:15,710 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f99ee63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:27:15, skipping insertion in model container [2022-11-02 20:27:15,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:26:39" (2/3) ... [2022-11-02 20:27:15,711 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f99ee63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:27:15, skipping insertion in model container [2022-11-02 20:27:15,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:27:15" (3/3) ... [2022-11-02 20:27:15,712 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.8-rc1-32_7a-drivers--media--usb--em28xx--em28xx.ko-ldv_main0.cil.out.i [2022-11-02 20:27:15,735 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:27:15,735 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:27:15,830 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:27:15,838 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;@69574ce3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:27:15,838 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:27:15,848 INFO L276 IsEmpty]: Start isEmpty. Operand has 1900 states, 1392 states have (on average 1.3915229885057472) internal successors, (1937), 1417 states have internal predecessors, (1937), 395 states have call successors, (395), 111 states have call predecessors, (395), 111 states have return successors, (395), 394 states have call predecessors, (395), 395 states have call successors, (395) [2022-11-02 20:27:15,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-02 20:27:15,857 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:27:15,857 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:27:15,858 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:27:15,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:27:15,864 INFO L85 PathProgramCache]: Analyzing trace with hash 284761344, now seen corresponding path program 1 times [2022-11-02 20:27:15,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:27:15,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490494581] [2022-11-02 20:27:15,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:27:15,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:27:17,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:27:18,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:27:18,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:27:19,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:27:19,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:27:19,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490494581] [2022-11-02 20:27:19,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490494581] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:27:19,039 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:27:19,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:27:19,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809496307] [2022-11-02 20:27:19,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:27:19,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:27:19,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:27:19,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:27:19,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:27:19,094 INFO L87 Difference]: Start difference. First operand has 1900 states, 1392 states have (on average 1.3915229885057472) internal successors, (1937), 1417 states have internal predecessors, (1937), 395 states have call successors, (395), 111 states have call predecessors, (395), 111 states have return successors, (395), 394 states have call predecessors, (395), 395 states have call successors, (395) Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 20:27:20,550 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:27:25,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:27:25,609 INFO L93 Difference]: Finished difference Result 3838 states and 5681 transitions. [2022-11-02 20:27:25,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:27:25,613 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-11-02 20:27:25,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:27:25,657 INFO L225 Difference]: With dead ends: 3838 [2022-11-02 20:27:25,657 INFO L226 Difference]: Without dead ends: 1936 [2022-11-02 20:27:25,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:27:25,687 INFO L413 NwaCegarLoop]: 2339 mSDtfsCounter, 3569 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 685 mSolverCounterSat, 1146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3681 SdHoareTripleChecker+Valid, 2745 SdHoareTripleChecker+Invalid, 1831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1146 IncrementalHoareTripleChecker+Valid, 685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-11-02 20:27:25,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3681 Valid, 2745 Invalid, 1831 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1146 Valid, 685 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2022-11-02 20:27:25,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1936 states. [2022-11-02 20:27:25,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1936 to 1896. [2022-11-02 20:27:25,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1896 states, 1391 states have (on average 1.387491013659238) internal successors, (1930), 1412 states have internal predecessors, (1930), 393 states have call successors, (393), 113 states have call predecessors, (393), 111 states have return successors, (382), 381 states have call predecessors, (382), 382 states have call successors, (382) [2022-11-02 20:27:26,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1896 states to 1896 states and 2705 transitions. [2022-11-02 20:27:26,015 INFO L78 Accepts]: Start accepts. Automaton has 1896 states and 2705 transitions. Word has length 12 [2022-11-02 20:27:26,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:27:26,016 INFO L495 AbstractCegarLoop]: Abstraction has 1896 states and 2705 transitions. [2022-11-02 20:27:26,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 20:27:26,017 INFO L276 IsEmpty]: Start isEmpty. Operand 1896 states and 2705 transitions. [2022-11-02 20:27:26,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 20:27:26,018 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:27:26,018 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:27:26,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:27:26,019 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:27:26,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:27:26,020 INFO L85 PathProgramCache]: Analyzing trace with hash 236165592, now seen corresponding path program 1 times [2022-11-02 20:27:26,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:27:26,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970736642] [2022-11-02 20:27:26,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:27:26,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:27:26,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:27:28,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:27:28,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:27:28,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:27:28,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:27:28,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970736642] [2022-11-02 20:27:28,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970736642] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:27:28,239 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:27:28,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:27:28,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572977246] [2022-11-02 20:27:28,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:27:28,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:27:28,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:27:28,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:27:28,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:27:28,243 INFO L87 Difference]: Start difference. First operand 1896 states and 2705 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 20:27:29,856 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:27:36,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:27:36,664 INFO L93 Difference]: Finished difference Result 2361 states and 3521 transitions. [2022-11-02 20:27:36,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:27:36,665 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2022-11-02 20:27:36,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:27:36,694 INFO L225 Difference]: With dead ends: 2361 [2022-11-02 20:27:36,694 INFO L226 Difference]: Without dead ends: 2358 [2022-11-02 20:27:36,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:27:36,698 INFO L413 NwaCegarLoop]: 2604 mSDtfsCounter, 4030 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 1418 mSolverCounterSat, 1081 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4226 SdHoareTripleChecker+Valid, 2983 SdHoareTripleChecker+Invalid, 2499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1081 IncrementalHoareTripleChecker+Valid, 1418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:27:36,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4226 Valid, 2983 Invalid, 2499 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1081 Valid, 1418 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2022-11-02 20:27:36,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2358 states. [2022-11-02 20:27:37,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2358 to 1895. [2022-11-02 20:27:37,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1895 states, 1391 states have (on average 1.3867721063982745) internal successors, (1929), 1411 states have internal predecessors, (1929), 392 states have call successors, (392), 113 states have call predecessors, (392), 111 states have return successors, (382), 381 states have call predecessors, (382), 382 states have call successors, (382) [2022-11-02 20:27:37,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1895 states to 1895 states and 2703 transitions. [2022-11-02 20:27:37,052 INFO L78 Accepts]: Start accepts. Automaton has 1895 states and 2703 transitions. Word has length 13 [2022-11-02 20:27:37,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:27:37,053 INFO L495 AbstractCegarLoop]: Abstraction has 1895 states and 2703 transitions. [2022-11-02 20:27:37,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 20:27:37,054 INFO L276 IsEmpty]: Start isEmpty. Operand 1895 states and 2703 transitions. [2022-11-02 20:27:37,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-02 20:27:37,054 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:27:37,055 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:27:37,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:27:37,055 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:27:37,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:27:37,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1270297853, now seen corresponding path program 1 times [2022-11-02 20:27:37,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:27:37,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333491054] [2022-11-02 20:27:37,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:27:37,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:27:37,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:27:39,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:27:39,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:27:39,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:27:39,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:27:39,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333491054] [2022-11-02 20:27:39,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333491054] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:27:39,056 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:27:39,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:27:39,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751556696] [2022-11-02 20:27:39,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:27:39,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:27:39,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:27:39,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:27:39,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:27:39,059 INFO L87 Difference]: Start difference. First operand 1895 states and 2703 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 20:27:40,389 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:27:46,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:27:46,911 INFO L93 Difference]: Finished difference Result 2360 states and 3519 transitions. [2022-11-02 20:27:46,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:27:46,912 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2022-11-02 20:27:46,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:27:46,930 INFO L225 Difference]: With dead ends: 2360 [2022-11-02 20:27:46,930 INFO L226 Difference]: Without dead ends: 2357 [2022-11-02 20:27:46,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:27:46,935 INFO L413 NwaCegarLoop]: 2622 mSDtfsCounter, 4022 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 1430 mSolverCounterSat, 1065 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4209 SdHoareTripleChecker+Valid, 3001 SdHoareTripleChecker+Invalid, 2495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1065 IncrementalHoareTripleChecker+Valid, 1430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:27:46,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4209 Valid, 3001 Invalid, 2495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1065 Valid, 1430 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2022-11-02 20:27:46,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2357 states. [2022-11-02 20:27:47,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2357 to 1894. [2022-11-02 20:27:47,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1894 states, 1391 states have (on average 1.3860531991373113) internal successors, (1928), 1410 states have internal predecessors, (1928), 391 states have call successors, (391), 113 states have call predecessors, (391), 111 states have return successors, (382), 381 states have call predecessors, (382), 382 states have call successors, (382) [2022-11-02 20:27:47,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1894 states to 1894 states and 2701 transitions. [2022-11-02 20:27:47,114 INFO L78 Accepts]: Start accepts. Automaton has 1894 states and 2701 transitions. Word has length 14 [2022-11-02 20:27:47,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:27:47,114 INFO L495 AbstractCegarLoop]: Abstraction has 1894 states and 2701 transitions. [2022-11-02 20:27:47,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 20:27:47,115 INFO L276 IsEmpty]: Start isEmpty. Operand 1894 states and 2701 transitions. [2022-11-02 20:27:47,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-02 20:27:47,116 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:27:47,116 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:27:47,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:27:47,116 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:27:47,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:27:47,117 INFO L85 PathProgramCache]: Analyzing trace with hash -726019525, now seen corresponding path program 1 times [2022-11-02 20:27:47,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:27:47,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984587750] [2022-11-02 20:27:47,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:27:47,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:27:48,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:27:49,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:27:49,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:27:49,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:27:49,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:27:49,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984587750] [2022-11-02 20:27:49,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984587750] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:27:49,243 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:27:49,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:27:49,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854858387] [2022-11-02 20:27:49,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:27:49,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:27:49,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:27:49,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:27:49,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:27:49,246 INFO L87 Difference]: Start difference. First operand 1894 states and 2701 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 20:27:50,617 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:28:05,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:28:05,283 INFO L93 Difference]: Finished difference Result 6416 states and 9496 transitions. [2022-11-02 20:28:05,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:28:05,284 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-11-02 20:28:05,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:28:05,318 INFO L225 Difference]: With dead ends: 6416 [2022-11-02 20:28:05,318 INFO L226 Difference]: Without dead ends: 4528 [2022-11-02 20:28:05,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:28:05,330 INFO L413 NwaCegarLoop]: 3234 mSDtfsCounter, 5056 mSDsluCounter, 1198 mSDsCounter, 0 mSdLazyCounter, 4241 mSolverCounterSat, 1479 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5380 SdHoareTripleChecker+Valid, 4432 SdHoareTripleChecker+Invalid, 5720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1479 IncrementalHoareTripleChecker+Valid, 4241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:28:05,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5380 Valid, 4432 Invalid, 5720 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1479 Valid, 4241 Invalid, 0 Unknown, 0 Unchecked, 15.3s Time] [2022-11-02 20:28:05,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4528 states. [2022-11-02 20:28:05,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4528 to 3850. [2022-11-02 20:28:05,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3850 states, 2839 states have (on average 1.3874603733709052) internal successors, (3939), 2868 states have internal predecessors, (3939), 786 states have call successors, (786), 214 states have call predecessors, (786), 224 states have return successors, (898), 791 states have call predecessors, (898), 774 states have call successors, (898) [2022-11-02 20:28:05,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3850 states to 3850 states and 5623 transitions. [2022-11-02 20:28:05,685 INFO L78 Accepts]: Start accepts. Automaton has 3850 states and 5623 transitions. Word has length 15 [2022-11-02 20:28:05,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:28:05,685 INFO L495 AbstractCegarLoop]: Abstraction has 3850 states and 5623 transitions. [2022-11-02 20:28:05,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 20:28:05,686 INFO L276 IsEmpty]: Start isEmpty. Operand 3850 states and 5623 transitions. [2022-11-02 20:28:05,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-02 20:28:05,687 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:28:05,691 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:28:05,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:28:05,691 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:28:05,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:28:05,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1033255674, now seen corresponding path program 1 times [2022-11-02 20:28:05,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:28:05,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546935861] [2022-11-02 20:28:05,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:28:05,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:28:06,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:28:07,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:28:07,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:28:07,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:28:07,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:28:07,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546935861] [2022-11-02 20:28:07,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546935861] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:28:07,103 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:28:07,103 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:28:07,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607628055] [2022-11-02 20:28:07,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:28:07,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:28:07,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:28:07,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:28:07,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:28:07,105 INFO L87 Difference]: Start difference. First operand 3850 states and 5623 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 20:28:08,334 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:28:14,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:28:14,890 INFO L93 Difference]: Finished difference Result 4526 states and 6783 transitions. [2022-11-02 20:28:14,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:28:14,890 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-11-02 20:28:14,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:28:14,915 INFO L225 Difference]: With dead ends: 4526 [2022-11-02 20:28:14,915 INFO L226 Difference]: Without dead ends: 4523 [2022-11-02 20:28:14,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:28:14,918 INFO L413 NwaCegarLoop]: 2598 mSDtfsCounter, 4017 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 1404 mSolverCounterSat, 1086 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4218 SdHoareTripleChecker+Valid, 2977 SdHoareTripleChecker+Invalid, 2490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1086 IncrementalHoareTripleChecker+Valid, 1404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:28:14,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4218 Valid, 2977 Invalid, 2490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1086 Valid, 1404 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2022-11-02 20:28:14,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4523 states. [2022-11-02 20:28:15,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4523 to 3849. [2022-11-02 20:28:15,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3849 states, 2839 states have (on average 1.3871081366678408) internal successors, (3938), 2867 states have internal predecessors, (3938), 785 states have call successors, (785), 214 states have call predecessors, (785), 224 states have return successors, (898), 791 states have call predecessors, (898), 774 states have call successors, (898) [2022-11-02 20:28:15,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3849 states to 3849 states and 5621 transitions. [2022-11-02 20:28:15,244 INFO L78 Accepts]: Start accepts. Automaton has 3849 states and 5621 transitions. Word has length 16 [2022-11-02 20:28:15,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:28:15,245 INFO L495 AbstractCegarLoop]: Abstraction has 3849 states and 5621 transitions. [2022-11-02 20:28:15,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 20:28:15,245 INFO L276 IsEmpty]: Start isEmpty. Operand 3849 states and 5621 transitions. [2022-11-02 20:28:15,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-02 20:28:15,249 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:28:15,249 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:28:15,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:28:15,250 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:28:15,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:28:15,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1967636834, now seen corresponding path program 1 times [2022-11-02 20:28:15,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:28:15,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684925715] [2022-11-02 20:28:15,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:28:15,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:28:15,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:28:16,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:28:16,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:28:16,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:28:16,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:28:16,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684925715] [2022-11-02 20:28:16,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684925715] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:28:16,701 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:28:16,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:28:16,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196151635] [2022-11-02 20:28:16,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:28:16,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:28:16,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:28:16,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:28:16,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:28:16,703 INFO L87 Difference]: Start difference. First operand 3849 states and 5621 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 20:28:17,861 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:28:24,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:28:24,440 INFO L93 Difference]: Finished difference Result 4525 states and 6781 transitions. [2022-11-02 20:28:24,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:28:24,441 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-11-02 20:28:24,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:28:24,469 INFO L225 Difference]: With dead ends: 4525 [2022-11-02 20:28:24,470 INFO L226 Difference]: Without dead ends: 4522 [2022-11-02 20:28:24,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:28:24,476 INFO L413 NwaCegarLoop]: 2631 mSDtfsCounter, 3997 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 1415 mSolverCounterSat, 1059 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4191 SdHoareTripleChecker+Valid, 3010 SdHoareTripleChecker+Invalid, 2474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1059 IncrementalHoareTripleChecker+Valid, 1415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:28:24,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4191 Valid, 3010 Invalid, 2474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1059 Valid, 1415 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2022-11-02 20:28:24,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4522 states. [2022-11-02 20:28:24,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4522 to 3848. [2022-11-02 20:28:24,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3848 states, 2839 states have (on average 1.3867558999647764) internal successors, (3937), 2866 states have internal predecessors, (3937), 784 states have call successors, (784), 214 states have call predecessors, (784), 224 states have return successors, (898), 791 states have call predecessors, (898), 774 states have call successors, (898) [2022-11-02 20:28:24,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3848 states to 3848 states and 5619 transitions. [2022-11-02 20:28:24,850 INFO L78 Accepts]: Start accepts. Automaton has 3848 states and 5619 transitions. Word has length 17 [2022-11-02 20:28:24,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:28:24,850 INFO L495 AbstractCegarLoop]: Abstraction has 3848 states and 5619 transitions. [2022-11-02 20:28:24,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 20:28:24,851 INFO L276 IsEmpty]: Start isEmpty. Operand 3848 states and 5619 transitions. [2022-11-02 20:28:24,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-02 20:28:24,856 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:28:24,856 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:28:24,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 20:28:24,857 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:28:24,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:28:24,867 INFO L85 PathProgramCache]: Analyzing trace with hash -868676855, now seen corresponding path program 1 times [2022-11-02 20:28:24,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:28:24,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783047939] [2022-11-02 20:28:24,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:28:24,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:28:25,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:28:26,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:28:26,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:28:26,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:28:26,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:28:26,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783047939] [2022-11-02 20:28:26,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783047939] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:28:26,312 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:28:26,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:28:26,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081453411] [2022-11-02 20:28:26,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:28:26,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:28:26,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:28:26,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:28:26,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:28:26,314 INFO L87 Difference]: Start difference. First operand 3848 states and 5619 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 20:28:27,500 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:28:34,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:28:34,327 INFO L93 Difference]: Finished difference Result 4524 states and 6779 transitions. [2022-11-02 20:28:34,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:28:34,327 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2022-11-02 20:28:34,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:28:34,360 INFO L225 Difference]: With dead ends: 4524 [2022-11-02 20:28:34,360 INFO L226 Difference]: Without dead ends: 4513 [2022-11-02 20:28:34,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:28:34,365 INFO L413 NwaCegarLoop]: 2620 mSDtfsCounter, 3994 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 1404 mSolverCounterSat, 1066 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4195 SdHoareTripleChecker+Valid, 2999 SdHoareTripleChecker+Invalid, 2470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1066 IncrementalHoareTripleChecker+Valid, 1404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:28:34,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4195 Valid, 2999 Invalid, 2470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1066 Valid, 1404 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2022-11-02 20:28:34,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4513 states. [2022-11-02 20:28:34,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4513 to 3839. [2022-11-02 20:28:34,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3839 states, 2832 states have (on average 1.3862994350282485) internal successors, (3926), 2858 states have internal predecessors, (3926), 782 states have call successors, (782), 213 states have call predecessors, (782), 224 states have return successors, (898), 791 states have call predecessors, (898), 774 states have call successors, (898) [2022-11-02 20:28:34,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3839 states to 3839 states and 5606 transitions. [2022-11-02 20:28:34,932 INFO L78 Accepts]: Start accepts. Automaton has 3839 states and 5606 transitions. Word has length 18 [2022-11-02 20:28:34,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:28:34,933 INFO L495 AbstractCegarLoop]: Abstraction has 3839 states and 5606 transitions. [2022-11-02 20:28:34,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 20:28:34,933 INFO L276 IsEmpty]: Start isEmpty. Operand 3839 states and 5606 transitions. [2022-11-02 20:28:34,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-02 20:28:34,940 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:28:34,940 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:28:34,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 20:28:34,941 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:28:34,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:28:34,941 INFO L85 PathProgramCache]: Analyzing trace with hash 2142084878, now seen corresponding path program 1 times [2022-11-02 20:28:34,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:28:34,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946878342] [2022-11-02 20:28:34,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:28:34,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:28:35,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:28:37,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:28:37,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:28:37,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-02 20:28:37,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:28:37,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-02 20:28:37,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:28:37,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-02 20:28:37,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:28:37,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:28:37,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:28:37,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946878342] [2022-11-02 20:28:37,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946878342] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:28:37,631 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:28:37,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:28:37,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291516531] [2022-11-02 20:28:37,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:28:37,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:28:37,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:28:37,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:28:37,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:28:37,633 INFO L87 Difference]: Start difference. First operand 3839 states and 5606 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-02 20:28:39,217 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:28:52,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:28:52,267 INFO L93 Difference]: Finished difference Result 9073 states and 13568 transitions. [2022-11-02 20:28:52,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:28:52,267 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 43 [2022-11-02 20:28:52,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:28:52,302 INFO L225 Difference]: With dead ends: 9073 [2022-11-02 20:28:52,302 INFO L226 Difference]: Without dead ends: 5240 [2022-11-02 20:28:52,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:28:52,326 INFO L413 NwaCegarLoop]: 2819 mSDtfsCounter, 2290 mSDsluCounter, 1402 mSDsCounter, 0 mSdLazyCounter, 4236 mSolverCounterSat, 750 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2682 SdHoareTripleChecker+Valid, 4221 SdHoareTripleChecker+Invalid, 4986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 750 IncrementalHoareTripleChecker+Valid, 4236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.9s IncrementalHoareTripleChecker+Time [2022-11-02 20:28:52,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2682 Valid, 4221 Invalid, 4986 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [750 Valid, 4236 Invalid, 0 Unknown, 0 Unchecked, 13.9s Time] [2022-11-02 20:28:52,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5240 states. [2022-11-02 20:28:52,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5240 to 4553. [2022-11-02 20:28:52,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4553 states, 3337 states have (on average 1.39736290080911) internal successors, (4663), 3365 states have internal predecessors, (4663), 990 states have call successors, (990), 213 states have call predecessors, (990), 225 states have return successors, (1111), 998 states have call predecessors, (1111), 982 states have call successors, (1111) [2022-11-02 20:28:52,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4553 states to 4553 states and 6764 transitions. [2022-11-02 20:28:52,844 INFO L78 Accepts]: Start accepts. Automaton has 4553 states and 6764 transitions. Word has length 43 [2022-11-02 20:28:52,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:28:52,847 INFO L495 AbstractCegarLoop]: Abstraction has 4553 states and 6764 transitions. [2022-11-02 20:28:52,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-02 20:28:52,848 INFO L276 IsEmpty]: Start isEmpty. Operand 4553 states and 6764 transitions. [2022-11-02 20:28:52,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-02 20:28:52,860 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:28:52,860 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:28:52,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 20:28:52,860 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:28:52,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:28:52,861 INFO L85 PathProgramCache]: Analyzing trace with hash 691019944, now seen corresponding path program 1 times [2022-11-02 20:28:52,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:28:52,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660602443] [2022-11-02 20:28:52,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:28:52,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:28:53,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:28:56,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:28:56,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:28:56,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-02 20:28:56,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:28:56,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-02 20:28:56,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:28:56,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-02 20:28:56,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:28:56,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-02 20:28:56,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:28:56,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-02 20:28:56,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:28:56,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-02 20:28:56,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:28:56,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:28:56,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:28:56,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660602443] [2022-11-02 20:28:56,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660602443] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:28:56,923 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:28:56,923 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:28:56,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150128587] [2022-11-02 20:28:56,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:28:56,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:28:56,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:28:56,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:28:56,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:28:56,926 INFO L87 Difference]: Start difference. First operand 4553 states and 6764 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-02 20:28:58,573 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:29:06,994 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:29:20,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:29:20,143 INFO L93 Difference]: Finished difference Result 5998 states and 9480 transitions. [2022-11-02 20:29:20,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:29:20,144 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2022-11-02 20:29:20,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:29:20,186 INFO L225 Difference]: With dead ends: 5998 [2022-11-02 20:29:20,186 INFO L226 Difference]: Without dead ends: 5995 [2022-11-02 20:29:20,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:29:20,192 INFO L413 NwaCegarLoop]: 2615 mSDtfsCounter, 4423 mSDsluCounter, 2266 mSDsCounter, 0 mSdLazyCounter, 5125 mSolverCounterSat, 2368 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4537 SdHoareTripleChecker+Valid, 4881 SdHoareTripleChecker+Invalid, 7494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2368 IncrementalHoareTripleChecker+Valid, 5125 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:29:20,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4537 Valid, 4881 Invalid, 7494 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2368 Valid, 5125 Invalid, 1 Unknown, 0 Unchecked, 22.1s Time] [2022-11-02 20:29:20,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5995 states. [2022-11-02 20:29:20,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5995 to 4360. [2022-11-02 20:29:20,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4360 states, 3199 states have (on average 1.3991872460143795) internal successors, (4476), 3230 states have internal predecessors, (4476), 946 states have call successors, (946), 213 states have call predecessors, (946), 214 states have return successors, (960), 937 states have call predecessors, (960), 939 states have call successors, (960) [2022-11-02 20:29:20,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4360 states to 4360 states and 6382 transitions. [2022-11-02 20:29:20,683 INFO L78 Accepts]: Start accepts. Automaton has 4360 states and 6382 transitions. Word has length 65 [2022-11-02 20:29:20,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:29:20,684 INFO L495 AbstractCegarLoop]: Abstraction has 4360 states and 6382 transitions. [2022-11-02 20:29:20,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-02 20:29:20,684 INFO L276 IsEmpty]: Start isEmpty. Operand 4360 states and 6382 transitions. [2022-11-02 20:29:20,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-02 20:29:20,693 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:29:20,694 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:29:20,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 20:29:20,694 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:29:20,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:29:20,695 INFO L85 PathProgramCache]: Analyzing trace with hash -253409404, now seen corresponding path program 1 times [2022-11-02 20:29:20,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:29:20,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253670401] [2022-11-02 20:29:20,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:29:20,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:29:21,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:29:23,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:29:23,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:29:23,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-02 20:29:23,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:29:23,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-02 20:29:23,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:29:23,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-02 20:29:23,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:29:23,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:29:23,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:29:23,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253670401] [2022-11-02 20:29:23,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253670401] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:29:23,084 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:29:23,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:29:23,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015898386] [2022-11-02 20:29:23,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:29:23,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:29:23,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:29:23,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:29:23,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:29:23,087 INFO L87 Difference]: Start difference. First operand 4360 states and 6382 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-02 20:29:24,538 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:29:38,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:29:38,469 INFO L93 Difference]: Finished difference Result 10670 states and 16118 transitions. [2022-11-02 20:29:38,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:29:38,469 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 70 [2022-11-02 20:29:38,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:29:38,513 INFO L225 Difference]: With dead ends: 10670 [2022-11-02 20:29:38,513 INFO L226 Difference]: Without dead ends: 6316 [2022-11-02 20:29:38,541 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:29:38,542 INFO L413 NwaCegarLoop]: 2763 mSDtfsCounter, 2262 mSDsluCounter, 1424 mSDsCounter, 0 mSdLazyCounter, 4151 mSolverCounterSat, 755 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2653 SdHoareTripleChecker+Valid, 4187 SdHoareTripleChecker+Invalid, 4906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 755 IncrementalHoareTripleChecker+Valid, 4151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:29:38,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2653 Valid, 4187 Invalid, 4906 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [755 Valid, 4151 Invalid, 0 Unknown, 0 Unchecked, 14.6s Time] [2022-11-02 20:29:38,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6316 states. [2022-11-02 20:29:39,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6316 to 5419. [2022-11-02 20:29:39,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5419 states, 3951 states have (on average 1.410528980005062) internal successors, (5573), 3983 states have internal predecessors, (5573), 1253 states have call successors, (1253), 213 states have call predecessors, (1253), 214 states have return successors, (1273), 1243 states have call predecessors, (1273), 1246 states have call successors, (1273) [2022-11-02 20:29:39,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5419 states to 5419 states and 8099 transitions. [2022-11-02 20:29:39,051 INFO L78 Accepts]: Start accepts. Automaton has 5419 states and 8099 transitions. Word has length 70 [2022-11-02 20:29:39,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:29:39,052 INFO L495 AbstractCegarLoop]: Abstraction has 5419 states and 8099 transitions. [2022-11-02 20:29:39,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-02 20:29:39,052 INFO L276 IsEmpty]: Start isEmpty. Operand 5419 states and 8099 transitions. [2022-11-02 20:29:39,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-02 20:29:39,061 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:29:39,062 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2022-11-02 20:29:39,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-02 20:29:39,062 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:29:39,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:29:39,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1009826591, now seen corresponding path program 1 times [2022-11-02 20:29:39,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:29:39,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177395861] [2022-11-02 20:29:39,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:29:39,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:29:39,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:29:42,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:29:42,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:29:42,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-02 20:29:42,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:29:42,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-02 20:29:42,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:29:42,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:29:42,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:29:42,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:29:42,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:29:42,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:29:42,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:29:42,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:29:42,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:29:42,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:29:42,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:29:42,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:29:42,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:29:42,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:29:42,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:29:42,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-02 20:29:42,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:29:42,414 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-02 20:29:42,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:29:42,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177395861] [2022-11-02 20:29:42,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177395861] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:29:42,415 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:29:42,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 20:29:42,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261201502] [2022-11-02 20:29:42,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:29:42,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:29:42,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:29:42,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:29:42,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:29:42,417 INFO L87 Difference]: Start difference. First operand 5419 states and 8099 transitions. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-02 20:29:44,074 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:29:48,925 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []