./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--usb--misc--sisusbvga--sisusbvga.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03f10526-3f68-4348-9b96-c6c60eff59ef/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03f10526-3f68-4348-9b96-c6c60eff59ef/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03f10526-3f68-4348-9b96-c6c60eff59ef/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03f10526-3f68-4348-9b96-c6c60eff59ef/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--usb--misc--sisusbvga--sisusbvga.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03f10526-3f68-4348-9b96-c6c60eff59ef/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03f10526-3f68-4348-9b96-c6c60eff59ef/bin/uautomizer-tPACEb0tL8 --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 d62cca735e5e5c3ed49d61d09e2b8d7696fac03708570c9e23afbb5bfdcaa275 --- 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-e04fb08 [2022-11-16 12:37:54,833 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:37:54,836 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:37:54,886 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:37:54,887 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:37:54,888 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:37:54,890 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:37:54,892 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:37:54,894 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:37:54,896 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:37:54,898 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:37:54,900 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:37:54,902 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:37:54,906 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:37:54,907 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:37:54,910 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:37:54,912 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:37:54,918 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:37:54,919 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:37:54,921 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:37:54,927 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:37:54,929 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:37:54,930 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:37:54,931 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:37:54,934 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:37:54,935 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:37:54,935 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:37:54,936 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:37:54,936 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:37:54,937 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:37:54,938 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:37:54,938 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:37:54,939 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:37:54,940 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:37:54,941 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:37:54,942 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:37:54,949 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:37:54,950 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:37:54,951 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:37:54,952 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:37:54,953 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:37:54,954 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03f10526-3f68-4348-9b96-c6c60eff59ef/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-16 12:37:54,998 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:37:54,999 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:37:55,000 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:37:55,001 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:37:55,002 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:37:55,002 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:37:55,003 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:37:55,003 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:37:55,003 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:37:55,004 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:37:55,005 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:37:55,005 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:37:55,006 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:37:55,006 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:37:55,006 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:37:55,006 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:37:55,006 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:37:55,007 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:37:55,007 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:37:55,007 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:37:55,007 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:37:55,007 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:37:55,008 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:37:55,008 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:37:55,008 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:37:55,008 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:37:55,010 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:37:55,010 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:37:55,010 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:37:55,011 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:37:55,011 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_03f10526-3f68-4348-9b96-c6c60eff59ef/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03f10526-3f68-4348-9b96-c6c60eff59ef/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d62cca735e5e5c3ed49d61d09e2b8d7696fac03708570c9e23afbb5bfdcaa275 [2022-11-16 12:37:55,389 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:37:55,420 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:37:55,425 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:37:55,427 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:37:55,428 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:37:55,430 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03f10526-3f68-4348-9b96-c6c60eff59ef/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--usb--misc--sisusbvga--sisusbvga.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i [2022-11-16 12:37:55,518 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03f10526-3f68-4348-9b96-c6c60eff59ef/bin/uautomizer-tPACEb0tL8/data/254b83498/da46c44666a442aeaaa4c7630f7a0520/FLAGa34cf6cf9 [2022-11-16 12:37:56,639 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:37:56,639 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03f10526-3f68-4348-9b96-c6c60eff59ef/sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--usb--misc--sisusbvga--sisusbvga.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i [2022-11-16 12:37:56,725 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03f10526-3f68-4348-9b96-c6c60eff59ef/bin/uautomizer-tPACEb0tL8/data/254b83498/da46c44666a442aeaaa4c7630f7a0520/FLAGa34cf6cf9 [2022-11-16 12:37:56,912 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03f10526-3f68-4348-9b96-c6c60eff59ef/bin/uautomizer-tPACEb0tL8/data/254b83498/da46c44666a442aeaaa4c7630f7a0520 [2022-11-16 12:37:56,915 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:37:56,919 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:37:56,922 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:37:56,922 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:37:56,926 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:37:56,927 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:37:56" (1/1) ... [2022-11-16 12:37:56,929 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fcb4a03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:37:56, skipping insertion in model container [2022-11-16 12:37:56,929 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:37:56" (1/1) ... [2022-11-16 12:37:56,937 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:37:57,163 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:38:00,306 WARN L229 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_03f10526-3f68-4348-9b96-c6c60eff59ef/sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--usb--misc--sisusbvga--sisusbvga.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i[361017,361030] [2022-11-16 12:38:00,421 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:38:00,579 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:38:01,183 WARN L229 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_03f10526-3f68-4348-9b96-c6c60eff59ef/sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--usb--misc--sisusbvga--sisusbvga.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i[361017,361030] [2022-11-16 12:38:01,192 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:38:01,492 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:38:01,492 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:38:01 WrapperNode [2022-11-16 12:38:01,494 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:38:01,496 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:38:01,496 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:38:01,497 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:38:01,505 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:38:01" (1/1) ... [2022-11-16 12:38:01,741 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:38:01" (1/1) ... [2022-11-16 12:38:02,277 INFO L138 Inliner]: procedures = 359, calls = 7223, calls flagged for inlining = 183, calls inlined = 137, statements flattened = 13258 [2022-11-16 12:38:02,278 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:38:02,279 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:38:02,279 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:38:02,279 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:38:02,298 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:38:01" (1/1) ... [2022-11-16 12:38:02,298 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:38:01" (1/1) ... [2022-11-16 12:38:02,401 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:38:01" (1/1) ... [2022-11-16 12:38:02,415 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:38:01" (1/1) ... [2022-11-16 12:38:02,957 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:38:01" (1/1) ... [2022-11-16 12:38:03,025 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:38:01" (1/1) ... [2022-11-16 12:38:03,071 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:38:01" (1/1) ... [2022-11-16 12:38:03,176 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:38:01" (1/1) ... [2022-11-16 12:38:03,352 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:38:03,354 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:38:03,355 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:38:03,355 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:38:03,357 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:38:01" (1/1) ... [2022-11-16 12:38:03,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:38:03,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03f10526-3f68-4348-9b96-c6c60eff59ef/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:38:03,406 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03f10526-3f68-4348-9b96-c6c60eff59ef/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:38:03,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03f10526-3f68-4348-9b96-c6c60eff59ef/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:38:03,489 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2022-11-16 12:38:03,490 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2022-11-16 12:38:03,490 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2022-11-16 12:38:03,490 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2022-11-16 12:38:03,490 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2022-11-16 12:38:03,491 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2022-11-16 12:38:03,491 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-16 12:38:03,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-16 12:38:03,491 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-11-16 12:38:03,491 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-11-16 12:38:03,491 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_recv_bulk_msg [2022-11-16 12:38:03,492 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_recv_bulk_msg [2022-11-16 12:38:03,492 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-16 12:38:03,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-16 12:38:03,492 INFO L130 BoogieDeclarations]: Found specification of procedure sisusbcon_save_screen [2022-11-16 12:38:03,492 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusbcon_save_screen [2022-11-16 12:38:03,492 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_free_buffers [2022-11-16 12:38:03,493 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_free_buffers [2022-11-16 12:38:03,494 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_disconnect [2022-11-16 12:38:03,495 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_disconnect [2022-11-16 12:38:03,495 INFO L130 BoogieDeclarations]: Found specification of procedure sisusbcon_deinit [2022-11-16 12:38:03,495 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusbcon_deinit [2022-11-16 12:38:03,495 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_write_memio_byte [2022-11-16 12:38:03,495 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_write_memio_byte [2022-11-16 12:38:03,496 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-16 12:38:03,510 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-16 12:38:03,511 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2022-11-16 12:38:03,511 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2022-11-16 12:38:03,511 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-16 12:38:03,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-16 12:38:03,511 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_set_cursor [2022-11-16 12:38:03,512 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_set_cursor [2022-11-16 12:38:03,512 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister_dev [2022-11-16 12:38:03,512 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister_dev [2022-11-16 12:38:03,512 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2022-11-16 12:38:03,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2022-11-16 12:38:03,512 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_write_memio_word [2022-11-16 12:38:03,513 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_write_memio_word [2022-11-16 12:38:03,513 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-16 12:38:03,513 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-16 12:38:03,514 INFO L130 BoogieDeclarations]: Found specification of procedure SiS_SetReg [2022-11-16 12:38:03,514 INFO L138 BoogieDeclarations]: Found implementation of procedure SiS_SetReg [2022-11-16 12:38:03,514 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-11-16 12:38:03,514 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-11-16 12:38:03,515 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_get_sisusb_lock_and_check [2022-11-16 12:38:03,515 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_get_sisusb_lock_and_check [2022-11-16 12:38:03,515 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:38:03,515 INFO L130 BoogieDeclarations]: Found specification of procedure take_over_console [2022-11-16 12:38:03,515 INFO L138 BoogieDeclarations]: Found implementation of procedure take_over_console [2022-11-16 12:38:03,516 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_sisusb_valid [2022-11-16 12:38:03,516 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_sisusb_valid [2022-11-16 12:38:03,516 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-16 12:38:03,516 INFO L130 BoogieDeclarations]: Found specification of procedure SiS_SetRegOR [2022-11-16 12:38:03,516 INFO L138 BoogieDeclarations]: Found implementation of procedure SiS_SetRegOR [2022-11-16 12:38:03,517 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_sisusb_usb_data [2022-11-16 12:38:03,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_sisusb_usb_data [2022-11-16 12:38:03,517 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2022-11-16 12:38:03,519 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_check_rbc [2022-11-16 12:38:03,519 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_check_rbc [2022-11-16 12:38:03,519 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:38:03,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-16 12:38:03,520 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-11-16 12:38:03,520 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-11-16 12:38:03,520 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_outurb_available [2022-11-16 12:38:03,520 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_outurb_available [2022-11-16 12:38:03,520 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_kill_all_busy [2022-11-16 12:38:03,520 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_kill_all_busy [2022-11-16 12:38:03,521 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-16 12:38:03,521 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-16 12:38:03,522 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2022-11-16 12:38:03,522 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2022-11-16 12:38:03,523 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_getidxreg [2022-11-16 12:38:03,523 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_getidxreg [2022-11-16 12:38:03,523 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2022-11-16 12:38:03,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2022-11-16 12:38:03,524 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2022-11-16 12:38:03,524 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2022-11-16 12:38:03,524 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_writeb [2022-11-16 12:38:03,524 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_writeb [2022-11-16 12:38:03,524 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-16 12:38:03,524 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-11-16 12:38:03,525 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-11-16 12:38:03,525 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_set_default_mode [2022-11-16 12:38:03,525 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_set_default_mode [2022-11-16 12:38:03,525 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_read_memio_byte [2022-11-16 12:38:03,525 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_read_memio_byte [2022-11-16 12:38:03,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-16 12:38:03,526 INFO L130 BoogieDeclarations]: Found specification of procedure SiS_DisplayOn [2022-11-16 12:38:03,526 INFO L138 BoogieDeclarations]: Found implementation of procedure SiS_DisplayOn [2022-11-16 12:38:03,526 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_setidxregandor [2022-11-16 12:38:03,527 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_setidxregandor [2022-11-16 12:38:03,527 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_write_mem_bulk [2022-11-16 12:38:03,527 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_write_mem_bulk [2022-11-16 12:38:03,528 INFO L130 BoogieDeclarations]: Found specification of procedure kref_get [2022-11-16 12:38:03,528 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_get [2022-11-16 12:38:03,528 INFO L130 BoogieDeclarations]: Found specification of procedure sisusbdummycon_init [2022-11-16 12:38:03,529 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusbdummycon_init [2022-11-16 12:38:03,529 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2022-11-16 12:38:03,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2022-11-16 12:38:03,530 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 12:38:03,531 INFO L130 BoogieDeclarations]: Found specification of procedure SiS_GetReg [2022-11-16 12:38:03,531 INFO L138 BoogieDeclarations]: Found implementation of procedure SiS_GetReg [2022-11-16 12:38:03,531 INFO L130 BoogieDeclarations]: Found specification of procedure sisusbcon_do_font_op [2022-11-16 12:38:03,531 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusbcon_do_font_op [2022-11-16 12:38:03,531 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_init_gfxdevice [2022-11-16 12:38:03,532 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_init_gfxdevice [2022-11-16 12:38:03,532 INFO L130 BoogieDeclarations]: Found specification of procedure SiS_SetRegByte [2022-11-16 12:38:03,532 INFO L138 BoogieDeclarations]: Found implementation of procedure SiS_SetRegByte [2022-11-16 12:38:03,532 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_free_urbs [2022-11-16 12:38:03,532 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_free_urbs [2022-11-16 12:38:03,533 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-16 12:38:03,533 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-16 12:38:03,533 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_send_bridge_packet [2022-11-16 12:38:03,534 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_send_bridge_packet [2022-11-16 12:38:03,534 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-11-16 12:38:03,534 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-11-16 12:38:03,534 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-11-16 12:38:03,535 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-11-16 12:38:03,537 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_ioctl [2022-11-16 12:38:03,540 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_ioctl [2022-11-16 12:38:03,540 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_read_memio_word [2022-11-16 12:38:03,540 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_read_memio_word [2022-11-16 12:38:03,541 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_get_sisusb [2022-11-16 12:38:03,542 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_get_sisusb [2022-11-16 12:38:03,543 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-16 12:38:03,544 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-16 12:38:03,545 INFO L130 BoogieDeclarations]: Found specification of procedure sisusbcon_cursor [2022-11-16 12:38:03,545 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusbcon_cursor [2022-11-16 12:38:03,550 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_is_inactive [2022-11-16 12:38:03,551 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_is_inactive [2022-11-16 12:38:03,551 INFO L130 BoogieDeclarations]: Found specification of procedure vfree [2022-11-16 12:38:03,551 INFO L138 BoogieDeclarations]: Found implementation of procedure vfree [2022-11-16 12:38:03,551 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_clear_vram [2022-11-16 12:38:03,551 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_clear_vram [2022-11-16 12:38:03,551 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_write_pci_config [2022-11-16 12:38:03,552 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_write_pci_config [2022-11-16 12:38:03,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:38:03,552 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2022-11-16 12:38:03,552 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2022-11-16 12:38:03,552 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_send_bulk_msg [2022-11-16 12:38:03,553 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_send_bulk_msg [2022-11-16 12:38:03,553 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2022-11-16 12:38:03,553 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2022-11-16 12:38:03,553 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-16 12:38:03,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-16 12:38:03,553 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_readb [2022-11-16 12:38:03,554 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_readb [2022-11-16 12:38:03,554 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_setidxregor [2022-11-16 12:38:03,554 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_setidxregor [2022-11-16 12:38:03,554 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 12:38:03,554 INFO L130 BoogieDeclarations]: Found specification of procedure vmalloc [2022-11-16 12:38:03,554 INFO L138 BoogieDeclarations]: Found implementation of procedure vmalloc [2022-11-16 12:38:03,555 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2022-11-16 12:38:03,555 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2022-11-16 12:38:03,555 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:38:03,555 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_send_packet [2022-11-16 12:38:03,555 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_send_packet [2022-11-16 12:38:03,555 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_read_memio_long [2022-11-16 12:38:03,556 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_read_memio_long [2022-11-16 12:38:03,556 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_reset_text_mode [2022-11-16 12:38:03,556 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_reset_text_mode [2022-11-16 12:38:03,556 INFO L130 BoogieDeclarations]: Found specification of procedure SiSUSB_InitPtr [2022-11-16 12:38:03,556 INFO L138 BoogieDeclarations]: Found implementation of procedure SiSUSB_InitPtr [2022-11-16 12:38:03,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-16 12:38:03,557 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_read_pci_config [2022-11-16 12:38:03,557 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_read_pci_config [2022-11-16 12:38:03,557 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-16 12:38:03,557 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_setidxreg [2022-11-16 12:38:03,557 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_setidxreg [2022-11-16 12:38:03,557 INFO L130 BoogieDeclarations]: Found specification of procedure SiS_SetRegANDOR [2022-11-16 12:38:03,558 INFO L138 BoogieDeclarations]: Found implementation of procedure SiS_SetRegANDOR [2022-11-16 12:38:03,558 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-16 12:38:03,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-16 12:38:03,558 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_wait_all_out_complete [2022-11-16 12:38:03,558 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_wait_all_out_complete [2022-11-16 12:38:03,558 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-11-16 12:38:03,559 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-11-16 12:38:03,559 INFO L130 BoogieDeclarations]: Found specification of procedure SiS_SetRegAND [2022-11-16 12:38:03,559 INFO L138 BoogieDeclarations]: Found implementation of procedure SiS_SetRegAND [2022-11-16 12:38:03,559 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_setidxregand [2022-11-16 12:38:03,559 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_setidxregand [2022-11-16 12:38:03,560 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2022-11-16 12:38:03,560 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2022-11-16 12:38:03,560 INFO L130 BoogieDeclarations]: Found specification of procedure SiS_SetSegmentReg [2022-11-16 12:38:03,560 INFO L138 BoogieDeclarations]: Found implementation of procedure SiS_SetSegmentReg [2022-11-16 12:38:03,560 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_copy_memory [2022-11-16 12:38:03,560 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_copy_memory [2022-11-16 12:38:03,561 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_setreg [2022-11-16 12:38:03,561 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_setreg [2022-11-16 12:38:03,561 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_sisusb_usb_data [2022-11-16 12:38:03,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_sisusb_usb_data [2022-11-16 12:38:03,561 INFO L130 BoogieDeclarations]: Found specification of procedure sisusbcon_set_start_address [2022-11-16 12:38:03,561 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusbcon_set_start_address [2022-11-16 12:38:03,562 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait [2022-11-16 12:38:03,562 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait [2022-11-16 12:38:03,562 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-16 12:38:03,562 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-16 12:38:03,562 INFO L130 BoogieDeclarations]: Found specification of procedure SiS_WriteDAC [2022-11-16 12:38:03,562 INFO L138 BoogieDeclarations]: Found implementation of procedure SiS_WriteDAC [2022-11-16 12:38:03,563 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_read_mem_bulk [2022-11-16 12:38:03,563 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_read_mem_bulk [2022-11-16 12:38:03,563 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_getreg [2022-11-16 12:38:03,563 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_getreg [2022-11-16 12:38:03,563 INFO L130 BoogieDeclarations]: Found specification of procedure SiSUSBSetMode [2022-11-16 12:38:03,563 INFO L138 BoogieDeclarations]: Found implementation of procedure SiSUSBSetMode [2022-11-16 12:38:03,564 INFO L130 BoogieDeclarations]: Found specification of procedure vc_resize [2022-11-16 12:38:03,564 INFO L138 BoogieDeclarations]: Found implementation of procedure vc_resize [2022-11-16 12:38:03,564 INFO L130 BoogieDeclarations]: Found specification of procedure sisusbcon_init [2022-11-16 12:38:03,564 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusbcon_init [2022-11-16 12:38:03,564 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout [2022-11-16 12:38:03,565 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout [2022-11-16 12:38:03,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:38:03,565 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_write_memio_long [2022-11-16 12:38:03,565 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_write_memio_long [2022-11-16 12:38:03,565 INFO L130 BoogieDeclarations]: Found specification of procedure SiS_GetRegByte [2022-11-16 12:38:03,565 INFO L138 BoogieDeclarations]: Found implementation of procedure SiS_GetRegByte [2022-11-16 12:38:03,566 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-16 12:38:03,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-16 12:38:03,566 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_triggersr16 [2022-11-16 12:38:03,566 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_triggersr16 [2022-11-16 12:38:03,566 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2022-11-16 12:38:03,566 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2022-11-16 12:38:03,567 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:38:03,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:38:03,567 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_all_free [2022-11-16 12:38:03,567 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_all_free [2022-11-16 12:38:04,556 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:38:04,560 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:38:42,530 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:38:42,554 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:38:42,554 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-16 12:38:42,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:38:42 BoogieIcfgContainer [2022-11-16 12:38:42,561 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:38:42,563 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:38:42,563 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:38:42,568 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:38:42,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:37:56" (1/3) ... [2022-11-16 12:38:42,569 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77bc830a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:38:42, skipping insertion in model container [2022-11-16 12:38:42,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:38:01" (2/3) ... [2022-11-16 12:38:42,570 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77bc830a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:38:42, skipping insertion in model container [2022-11-16 12:38:42,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:38:42" (3/3) ... [2022-11-16 12:38:42,571 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.8-rc1-32_7a-drivers--usb--misc--sisusbvga--sisusbvga.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i [2022-11-16 12:38:42,593 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:38:42,593 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 12:38:42,728 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:38:42,736 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;@5f444151, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:38:42,736 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 12:38:42,752 INFO L276 IsEmpty]: Start isEmpty. Operand has 3322 states, 2451 states have (on average 1.4700122399020807) internal successors, (3603), 2478 states have internal predecessors, (3603), 765 states have call successors, (765), 104 states have call predecessors, (765), 104 states have return successors, (765), 761 states have call predecessors, (765), 765 states have call successors, (765) [2022-11-16 12:38:42,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-16 12:38:42,759 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:38:42,759 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:38:42,760 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:38:42,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:38:42,766 INFO L85 PathProgramCache]: Analyzing trace with hash -234250708, now seen corresponding path program 1 times [2022-11-16 12:38:42,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:38:42,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430260609] [2022-11-16 12:38:42,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:38:42,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:38:43,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:44,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 12:38:44,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:44,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 12:38:44,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:44,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:38:44,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:38:44,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430260609] [2022-11-16 12:38:44,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430260609] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:38:44,771 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:38:44,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:38:44,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085157771] [2022-11-16 12:38:44,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:38:44,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:38:44,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:38:44,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:38:44,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:38:44,837 INFO L87 Difference]: Start difference. First operand has 3322 states, 2451 states have (on average 1.4700122399020807) internal successors, (3603), 2478 states have internal predecessors, (3603), 765 states have call successors, (765), 104 states have call predecessors, (765), 104 states have return successors, (765), 761 states have call predecessors, (765), 765 states have call successors, (765) Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-16 12:38:47,125 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:38:53,806 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:39:02,615 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:39:09,618 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:39:26,829 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:39:29,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:39:29,506 INFO L93 Difference]: Finished difference Result 6720 states and 10979 transitions. [2022-11-16 12:39:29,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:39:29,512 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), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2022-11-16 12:39:29,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:39:29,580 INFO L225 Difference]: With dead ends: 6720 [2022-11-16 12:39:29,580 INFO L226 Difference]: Without dead ends: 3402 [2022-11-16 12:39:29,618 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:39:29,623 INFO L413 NwaCegarLoop]: 1126 mSDtfsCounter, 3366 mSDsluCounter, 1406 mSDsCounter, 0 mSdLazyCounter, 8756 mSolverCounterSat, 302 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 41.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3912 SdHoareTripleChecker+Valid, 2532 SdHoareTripleChecker+Invalid, 9062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 302 IncrementalHoareTripleChecker+Valid, 8756 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 43.7s IncrementalHoareTripleChecker+Time [2022-11-16 12:39:29,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3912 Valid, 2532 Invalid, 9062 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [302 Valid, 8756 Invalid, 4 Unknown, 0 Unchecked, 43.7s Time] [2022-11-16 12:39:29,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3402 states. [2022-11-16 12:39:29,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3402 to 3315. [2022-11-16 12:39:29,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3315 states, 2447 states have (on average 1.4654679199019207) internal successors, (3586), 2472 states have internal predecessors, (3586), 765 states have call successors, (765), 104 states have call predecessors, (765), 102 states have return successors, (759), 755 states have call predecessors, (759), 759 states have call successors, (759) [2022-11-16 12:39:29,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3315 states to 3315 states and 5110 transitions. [2022-11-16 12:39:29,972 INFO L78 Accepts]: Start accepts. Automaton has 3315 states and 5110 transitions. Word has length 19 [2022-11-16 12:39:29,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:39:29,973 INFO L495 AbstractCegarLoop]: Abstraction has 3315 states and 5110 transitions. [2022-11-16 12:39:29,973 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), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-16 12:39:29,973 INFO L276 IsEmpty]: Start isEmpty. Operand 3315 states and 5110 transitions. [2022-11-16 12:39:29,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-16 12:39:29,975 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:39:29,975 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] [2022-11-16 12:39:29,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:39:29,977 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:39:29,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:39:29,977 INFO L85 PathProgramCache]: Analyzing trace with hash -2035473744, now seen corresponding path program 1 times [2022-11-16 12:39:29,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:39:29,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390684649] [2022-11-16 12:39:29,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:39:29,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:39:30,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:31,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 12:39:31,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:31,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 12:39:31,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:31,195 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:39:31,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:39:31,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390684649] [2022-11-16 12:39:31,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390684649] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:39:31,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1011092240] [2022-11-16 12:39:31,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:39:31,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:39:31,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03f10526-3f68-4348-9b96-c6c60eff59ef/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:39:31,201 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03f10526-3f68-4348-9b96-c6c60eff59ef/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:39:31,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03f10526-3f68-4348-9b96-c6c60eff59ef/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 12:39:33,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:33,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 8418 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 12:39:33,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:39:33,462 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:39:33,462 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:39:33,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1011092240] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:39:33,463 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:39:33,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-11-16 12:39:33,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557982289] [2022-11-16 12:39:33,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:39:33,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:39:33,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:39:33,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:39:33,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:39:33,466 INFO L87 Difference]: Start difference. First operand 3315 states and 5110 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 12:39:33,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:39:33,961 INFO L93 Difference]: Finished difference Result 3317 states and 5111 transitions. [2022-11-16 12:39:33,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:39:33,962 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 21 [2022-11-16 12:39:33,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:39:33,986 INFO L225 Difference]: With dead ends: 3317 [2022-11-16 12:39:33,986 INFO L226 Difference]: Without dead ends: 3314 [2022-11-16 12:39:33,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:39:33,995 INFO L413 NwaCegarLoop]: 5106 mSDtfsCounter, 5089 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5089 SdHoareTripleChecker+Valid, 5108 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:39:33,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5089 Valid, 5108 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 12:39:34,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3314 states. [2022-11-16 12:39:34,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3314 to 3314. [2022-11-16 12:39:34,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3314 states, 2447 states have (on average 1.465059256232121) internal successors, (3585), 2471 states have internal predecessors, (3585), 764 states have call successors, (764), 104 states have call predecessors, (764), 102 states have return successors, (759), 755 states have call predecessors, (759), 759 states have call successors, (759) [2022-11-16 12:39:34,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3314 states to 3314 states and 5108 transitions. [2022-11-16 12:39:34,192 INFO L78 Accepts]: Start accepts. Automaton has 3314 states and 5108 transitions. Word has length 21 [2022-11-16 12:39:34,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:39:34,193 INFO L495 AbstractCegarLoop]: Abstraction has 3314 states and 5108 transitions. [2022-11-16 12:39:34,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 12:39:34,193 INFO L276 IsEmpty]: Start isEmpty. Operand 3314 states and 5108 transitions. [2022-11-16 12:39:34,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-16 12:39:34,194 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:39:34,194 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] [2022-11-16 12:39:34,223 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03f10526-3f68-4348-9b96-c6c60eff59ef/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 12:39:34,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03f10526-3f68-4348-9b96-c6c60eff59ef/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:39:34,417 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:39:34,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:39:34,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1322374236, now seen corresponding path program 1 times [2022-11-16 12:39:34,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:39:34,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803441616] [2022-11-16 12:39:34,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:39:34,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:39:34,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:35,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 12:39:35,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:35,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 12:39:35,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:35,526 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:39:35,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:39:35,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803441616] [2022-11-16 12:39:35,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803441616] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:39:35,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [326225032] [2022-11-16 12:39:35,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:39:35,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:39:35,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03f10526-3f68-4348-9b96-c6c60eff59ef/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:39:35,530 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03f10526-3f68-4348-9b96-c6c60eff59ef/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:39:35,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03f10526-3f68-4348-9b96-c6c60eff59ef/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 12:39:37,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:37,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 8420 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 12:39:37,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:39:37,782 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:39:37,782 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:39:37,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [326225032] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:39:37,782 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:39:37,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-11-16 12:39:37,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066074700] [2022-11-16 12:39:37,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:39:37,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:39:37,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:39:37,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:39:37,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:39:37,784 INFO L87 Difference]: Start difference. First operand 3314 states and 5108 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 12:39:38,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:39:38,346 INFO L93 Difference]: Finished difference Result 8833 states and 13658 transitions. [2022-11-16 12:39:38,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:39:38,347 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22 [2022-11-16 12:39:38,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:39:38,393 INFO L225 Difference]: With dead ends: 8833 [2022-11-16 12:39:38,393 INFO L226 Difference]: Without dead ends: 5534 [2022-11-16 12:39:38,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:39:38,419 INFO L413 NwaCegarLoop]: 7988 mSDtfsCounter, 3651 mSDsluCounter, 4853 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3651 SdHoareTripleChecker+Valid, 12841 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:39:38,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3651 Valid, 12841 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 12:39:38,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5534 states. [2022-11-16 12:39:38,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5534 to 5531. [2022-11-16 12:39:38,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5531 states, 4095 states have (on average 1.4683760683760683) internal successors, (6013), 4146 states have internal predecessors, (6013), 1254 states have call successors, (1254), 180 states have call predecessors, (1254), 181 states have return successors, (1261), 1230 states have call predecessors, (1261), 1236 states have call successors, (1261) [2022-11-16 12:39:39,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5531 states to 5531 states and 8528 transitions. [2022-11-16 12:39:39,030 INFO L78 Accepts]: Start accepts. Automaton has 5531 states and 8528 transitions. Word has length 22 [2022-11-16 12:39:39,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:39:39,031 INFO L495 AbstractCegarLoop]: Abstraction has 5531 states and 8528 transitions. [2022-11-16 12:39:39,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 12:39:39,034 INFO L276 IsEmpty]: Start isEmpty. Operand 5531 states and 8528 transitions. [2022-11-16 12:39:39,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-16 12:39:39,035 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:39:39,035 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] [2022-11-16 12:39:39,059 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03f10526-3f68-4348-9b96-c6c60eff59ef/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 12:39:39,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03f10526-3f68-4348-9b96-c6c60eff59ef/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-11-16 12:39:39,251 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:39:39,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:39:39,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1958515917, now seen corresponding path program 1 times [2022-11-16 12:39:39,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:39:39,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202217587] [2022-11-16 12:39:39,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:39:39,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:39:39,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:40,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 12:39:40,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:40,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 12:39:40,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:40,327 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:39:40,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:39:40,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202217587] [2022-11-16 12:39:40,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202217587] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:39:40,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485027643] [2022-11-16 12:39:40,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:39:40,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:39:40,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03f10526-3f68-4348-9b96-c6c60eff59ef/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:39:40,332 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03f10526-3f68-4348-9b96-c6c60eff59ef/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:39:40,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03f10526-3f68-4348-9b96-c6c60eff59ef/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 12:39:42,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:42,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 8422 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 12:39:42,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:39:42,451 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:39:42,451 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:39:42,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1485027643] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:39:42,452 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:39:42,452 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-11-16 12:39:42,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894289648] [2022-11-16 12:39:42,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:39:42,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:39:42,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:39:42,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:39:42,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:39:42,454 INFO L87 Difference]: Start difference. First operand 5531 states and 8528 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 12:39:42,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:39:42,923 INFO L93 Difference]: Finished difference Result 5533 states and 8529 transitions. [2022-11-16 12:39:42,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:39:42,940 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 23 [2022-11-16 12:39:42,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:39:42,982 INFO L225 Difference]: With dead ends: 5533 [2022-11-16 12:39:42,982 INFO L226 Difference]: Without dead ends: 5522 [2022-11-16 12:39:42,990 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:39:42,992 INFO L413 NwaCegarLoop]: 5105 mSDtfsCounter, 5085 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5085 SdHoareTripleChecker+Valid, 5107 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:39:42,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5085 Valid, 5107 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 12:39:43,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5522 states. [2022-11-16 12:39:43,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5522 to 5522. [2022-11-16 12:39:43,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5522 states, 4089 states have (on average 1.467351430667645) internal successors, (6000), 4139 states have internal predecessors, (6000), 1251 states have call successors, (1251), 179 states have call predecessors, (1251), 181 states have return successors, (1260), 1229 states have call predecessors, (1260), 1235 states have call successors, (1260) [2022-11-16 12:39:43,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5522 states to 5522 states and 8511 transitions. [2022-11-16 12:39:43,653 INFO L78 Accepts]: Start accepts. Automaton has 5522 states and 8511 transitions. Word has length 23 [2022-11-16 12:39:43,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:39:43,654 INFO L495 AbstractCegarLoop]: Abstraction has 5522 states and 8511 transitions. [2022-11-16 12:39:43,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 12:39:43,654 INFO L276 IsEmpty]: Start isEmpty. Operand 5522 states and 8511 transitions. [2022-11-16 12:39:43,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-16 12:39:43,657 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:39:43,657 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-16 12:39:43,684 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03f10526-3f68-4348-9b96-c6c60eff59ef/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 12:39:43,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03f10526-3f68-4348-9b96-c6c60eff59ef/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:39:43,879 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:39:43,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:39:43,880 INFO L85 PathProgramCache]: Analyzing trace with hash 338757201, now seen corresponding path program 1 times [2022-11-16 12:39:43,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:39:43,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296669863] [2022-11-16 12:39:43,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:39:43,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:39:44,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:45,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 12:39:45,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:45,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 12:39:45,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:45,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 12:39:45,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:45,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-16 12:39:45,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:45,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-16 12:39:45,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:45,350 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 12:39:45,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:39:45,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296669863] [2022-11-16 12:39:45,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296669863] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:39:45,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [663078544] [2022-11-16 12:39:45,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:39:45,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:39:45,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03f10526-3f68-4348-9b96-c6c60eff59ef/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:39:45,355 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03f10526-3f68-4348-9b96-c6c60eff59ef/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:39:45,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03f10526-3f68-4348-9b96-c6c60eff59ef/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 12:39:47,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:47,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 8602 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 12:39:47,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:39:47,573 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:39:47,573 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:39:47,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [663078544] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:39:47,573 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:39:47,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-11-16 12:39:47,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430669857] [2022-11-16 12:39:47,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:39:47,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:39:47,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:39:47,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:39:47,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:39:47,575 INFO L87 Difference]: Start difference. First operand 5522 states and 8511 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:39:48,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:39:48,019 INFO L93 Difference]: Finished difference Result 11293 states and 17432 transitions. [2022-11-16 12:39:48,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:39:48,019 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 48 [2022-11-16 12:39:48,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:39:48,084 INFO L225 Difference]: With dead ends: 11293 [2022-11-16 12:39:48,084 INFO L226 Difference]: Without dead ends: 5786 [2022-11-16 12:39:48,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:39:48,118 INFO L413 NwaCegarLoop]: 5136 mSDtfsCounter, 179 mSDsluCounter, 5024 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 10160 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:39:48,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 10160 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:39:48,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5786 states. [2022-11-16 12:39:48,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5786 to 5759. [2022-11-16 12:39:48,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5759 states, 4264 states have (on average 1.4659943714821764) internal successors, (6251), 4321 states have internal predecessors, (6251), 1313 states have call successors, (1313), 179 states have call predecessors, (1313), 181 states have return successors, (1327), 1290 states have call predecessors, (1327), 1297 states have call successors, (1327) [2022-11-16 12:39:48,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5759 states to 5759 states and 8891 transitions. [2022-11-16 12:39:48,693 INFO L78 Accepts]: Start accepts. Automaton has 5759 states and 8891 transitions. Word has length 48 [2022-11-16 12:39:48,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:39:48,694 INFO L495 AbstractCegarLoop]: Abstraction has 5759 states and 8891 transitions. [2022-11-16 12:39:48,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:39:48,694 INFO L276 IsEmpty]: Start isEmpty. Operand 5759 states and 8891 transitions. [2022-11-16 12:39:48,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-16 12:39:48,702 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:39:48,702 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-16 12:39:48,728 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03f10526-3f68-4348-9b96-c6c60eff59ef/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 12:39:48,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03f10526-3f68-4348-9b96-c6c60eff59ef/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:39:48,919 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:39:48,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:39:48,919 INFO L85 PathProgramCache]: Analyzing trace with hash -861225848, now seen corresponding path program 1 times [2022-11-16 12:39:48,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:39:48,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529355598] [2022-11-16 12:39:48,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:39:48,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:39:49,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:49,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 12:39:49,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:50,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 12:39:50,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:50,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-16 12:39:50,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:50,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-16 12:39:50,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:50,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 12:39:50,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:50,056 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 12:39:50,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:39:50,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529355598] [2022-11-16 12:39:50,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529355598] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:39:50,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [983087090] [2022-11-16 12:39:50,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:39:50,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:39:50,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03f10526-3f68-4348-9b96-c6c60eff59ef/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:39:50,059 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03f10526-3f68-4348-9b96-c6c60eff59ef/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:39:50,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03f10526-3f68-4348-9b96-c6c60eff59ef/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 12:39:52,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:52,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 8581 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 12:39:52,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:39:52,312 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-16 12:39:52,312 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:39:52,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [983087090] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:39:52,313 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:39:52,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-11-16 12:39:52,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259278503] [2022-11-16 12:39:52,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:39:52,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:39:52,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:39:52,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:39:52,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:39:52,315 INFO L87 Difference]: Start difference. First operand 5759 states and 8891 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-16 12:39:52,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:39:52,890 INFO L93 Difference]: Finished difference Result 11507 states and 17780 transitions. [2022-11-16 12:39:52,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:39:52,890 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 54 [2022-11-16 12:39:52,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:39:52,933 INFO L225 Difference]: With dead ends: 11507 [2022-11-16 12:39:52,934 INFO L226 Difference]: Without dead ends: 5763 [2022-11-16 12:39:52,973 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:39:52,974 INFO L413 NwaCegarLoop]: 5100 mSDtfsCounter, 3 mSDsluCounter, 10195 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 15295 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:39:52,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 15295 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:39:52,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5763 states. [2022-11-16 12:39:53,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5763 to 5762. [2022-11-16 12:39:53,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5762 states, 4267 states have (on average 1.4656667447855636) internal successors, (6254), 4324 states have internal predecessors, (6254), 1313 states have call successors, (1313), 179 states have call predecessors, (1313), 181 states have return successors, (1327), 1290 states have call predecessors, (1327), 1297 states have call successors, (1327) [2022-11-16 12:39:53,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5762 states to 5762 states and 8894 transitions. [2022-11-16 12:39:53,388 INFO L78 Accepts]: Start accepts. Automaton has 5762 states and 8894 transitions. Word has length 54 [2022-11-16 12:39:53,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:39:53,389 INFO L495 AbstractCegarLoop]: Abstraction has 5762 states and 8894 transitions. [2022-11-16 12:39:53,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-16 12:39:53,390 INFO L276 IsEmpty]: Start isEmpty. Operand 5762 states and 8894 transitions. [2022-11-16 12:39:53,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-16 12:39:53,391 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:39:53,391 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-16 12:39:53,419 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03f10526-3f68-4348-9b96-c6c60eff59ef/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 12:39:53,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03f10526-3f68-4348-9b96-c6c60eff59ef/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-16 12:39:53,614 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:39:53,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:39:53,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1160264125, now seen corresponding path program 1 times [2022-11-16 12:39:53,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:39:53,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250808259] [2022-11-16 12:39:53,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:39:53,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:39:53,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:54,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 12:39:54,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:54,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 12:39:54,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:54,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 12:39:54,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:54,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-16 12:39:54,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:54,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-16 12:39:54,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:54,627 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 12:39:54,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:39:54,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250808259] [2022-11-16 12:39:54,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250808259] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:39:54,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1832795128] [2022-11-16 12:39:54,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:39:54,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:39:54,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03f10526-3f68-4348-9b96-c6c60eff59ef/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:39:54,629 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03f10526-3f68-4348-9b96-c6c60eff59ef/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:39:54,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03f10526-3f68-4348-9b96-c6c60eff59ef/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 12:39:56,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:56,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 8596 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 12:39:56,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:39:56,707 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:39:56,707 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:39:56,817 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 12:39:56,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1832795128] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:39:56,817 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:39:56,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 9 [2022-11-16 12:39:56,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621633323] [2022-11-16 12:39:56,818 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:39:56,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 12:39:56,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:39:56,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 12:39:56,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:39:56,819 INFO L87 Difference]: Start difference. First operand 5762 states and 8894 transitions. Second operand has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 7 states have internal predecessors, (61), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-16 12:40:00,784 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:40:10,015 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:40:12,346 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:40:21,383 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:40:37,981 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:40:40,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:40:40,516 INFO L93 Difference]: Finished difference Result 11663 states and 18014 transitions. [2022-11-16 12:40:40,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:40:40,522 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 7 states have internal predecessors, (61), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 59 [2022-11-16 12:40:40,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:40:40,567 INFO L225 Difference]: With dead ends: 11663 [2022-11-16 12:40:40,567 INFO L226 Difference]: Without dead ends: 5912 [2022-11-16 12:40:40,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:40:40,599 INFO L413 NwaCegarLoop]: 1119 mSDtfsCounter, 3362 mSDsluCounter, 2216 mSDsCounter, 0 mSdLazyCounter, 8927 mSolverCounterSat, 310 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3907 SdHoareTripleChecker+Valid, 3335 SdHoareTripleChecker+Invalid, 9242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 310 IncrementalHoareTripleChecker+Valid, 8927 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42.9s IncrementalHoareTripleChecker+Time [2022-11-16 12:40:40,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3907 Valid, 3335 Invalid, 9242 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [310 Valid, 8927 Invalid, 5 Unknown, 0 Unchecked, 42.9s Time] [2022-11-16 12:40:40,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5912 states. [2022-11-16 12:40:41,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5912 to 5827. [2022-11-16 12:40:41,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5827 states, 4314 states have (on average 1.46407046824293) internal successors, (6316), 4383 states have internal predecessors, (6316), 1321 states have call successors, (1321), 179 states have call predecessors, (1321), 191 states have return successors, (1361), 1296 states have call predecessors, (1361), 1305 states have call successors, (1361) [2022-11-16 12:40:41,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5827 states to 5827 states and 8998 transitions. [2022-11-16 12:40:41,080 INFO L78 Accepts]: Start accepts. Automaton has 5827 states and 8998 transitions. Word has length 59 [2022-11-16 12:40:41,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:40:41,080 INFO L495 AbstractCegarLoop]: Abstraction has 5827 states and 8998 transitions. [2022-11-16 12:40:41,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 7 states have internal predecessors, (61), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-16 12:40:41,081 INFO L276 IsEmpty]: Start isEmpty. Operand 5827 states and 8998 transitions. [2022-11-16 12:40:41,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-16 12:40:41,083 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:40:41,083 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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] [2022-11-16 12:40:41,110 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03f10526-3f68-4348-9b96-c6c60eff59ef/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 12:40:41,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03f10526-3f68-4348-9b96-c6c60eff59ef/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-16 12:40:41,299 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:40:41,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:40:41,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1788565577, now seen corresponding path program 2 times [2022-11-16 12:40:41,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:40:41,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316450944] [2022-11-16 12:40:41,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:40:41,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:40:41,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:42,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 12:40:42,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:42,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 12:40:42,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:42,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-16 12:40:42,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:42,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-16 12:40:42,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:42,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-16 12:40:42,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:42,420 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-16 12:40:42,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:40:42,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316450944] [2022-11-16 12:40:42,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316450944] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:40:42,421 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:40:42,421 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:40:42,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140870603] [2022-11-16 12:40:42,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:40:42,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:40:42,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:40:42,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:40:42,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:40:42,423 INFO L87 Difference]: Start difference. First operand 5827 states and 8998 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:40:45,311 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:40:55,540 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:41:06,128 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:41:26,665 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:41:29,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:41:29,323 INFO L93 Difference]: Finished difference Result 13118 states and 20199 transitions. [2022-11-16 12:41:29,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:41:29,323 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 65 [2022-11-16 12:41:29,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:41:29,365 INFO L225 Difference]: With dead ends: 13118 [2022-11-16 12:41:29,365 INFO L226 Difference]: Without dead ends: 7312 [2022-11-16 12:41:29,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:41:29,392 INFO L413 NwaCegarLoop]: 1452 mSDtfsCounter, 10821 mSDsluCounter, 1524 mSDsCounter, 0 mSdLazyCounter, 9219 mSolverCounterSat, 3373 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11456 SdHoareTripleChecker+Valid, 2976 SdHoareTripleChecker+Invalid, 12596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 3373 IncrementalHoareTripleChecker+Valid, 9219 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 45.9s IncrementalHoareTripleChecker+Time [2022-11-16 12:41:29,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11456 Valid, 2976 Invalid, 12596 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [3373 Valid, 9219 Invalid, 4 Unknown, 0 Unchecked, 45.9s Time] [2022-11-16 12:41:29,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7312 states. [2022-11-16 12:41:29,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7312 to 7199. [2022-11-16 12:41:29,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7199 states, 5328 states have (on average 1.4536411411411412) internal successors, (7745), 5412 states have internal predecessors, (7745), 1615 states have call successors, (1615), 246 states have call predecessors, (1615), 255 states have return successors, (1636), 1578 states have call predecessors, (1636), 1589 states have call successors, (1636) [2022-11-16 12:41:29,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7199 states to 7199 states and 10996 transitions. [2022-11-16 12:41:29,853 INFO L78 Accepts]: Start accepts. Automaton has 7199 states and 10996 transitions. Word has length 65 [2022-11-16 12:41:29,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:41:29,855 INFO L495 AbstractCegarLoop]: Abstraction has 7199 states and 10996 transitions. [2022-11-16 12:41:29,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:41:29,855 INFO L276 IsEmpty]: Start isEmpty. Operand 7199 states and 10996 transitions. [2022-11-16 12:41:29,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-11-16 12:41:29,865 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:41:29,865 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:41:29,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 12:41:29,865 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:41:29,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:29,866 INFO L85 PathProgramCache]: Analyzing trace with hash -429781672, now seen corresponding path program 1 times [2022-11-16 12:41:29,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:29,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231885953] [2022-11-16 12:41:29,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:29,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:30,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:30,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 12:41:30,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:30,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 12:41:30,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:30,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-16 12:41:30,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:30,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 12:41:30,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:30,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-16 12:41:30,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:30,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-16 12:41:30,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:30,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:41:30,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:30,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:41:30,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:30,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-16 12:41:30,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:30,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-16 12:41:30,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:31,039 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-16 12:41:31,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:41:31,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231885953] [2022-11-16 12:41:31,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231885953] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:41:31,040 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:41:31,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:41:31,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478797207] [2022-11-16 12:41:31,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:41:31,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:41:31,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:41:31,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:41:31,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:41:31,043 INFO L87 Difference]: Start difference. First operand 7199 states and 10996 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-16 12:41:34,640 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:41:38,467 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:41:47,086 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:41:59,823 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:42:21,139 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:42:24,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:42:24,441 INFO L93 Difference]: Finished difference Result 14659 states and 22454 transitions. [2022-11-16 12:42:24,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:42:24,442 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 105 [2022-11-16 12:42:24,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:42:24,473 INFO L225 Difference]: With dead ends: 14659 [2022-11-16 12:42:24,473 INFO L226 Difference]: Without dead ends: 7481 [2022-11-16 12:42:24,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:42:24,498 INFO L413 NwaCegarLoop]: 1125 mSDtfsCounter, 6716 mSDsluCounter, 1753 mSDsCounter, 0 mSdLazyCounter, 11533 mSolverCounterSat, 2622 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 49.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7223 SdHoareTripleChecker+Valid, 2878 SdHoareTripleChecker+Invalid, 14160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 2622 IncrementalHoareTripleChecker+Valid, 11533 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 52.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:42:24,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7223 Valid, 2878 Invalid, 14160 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [2622 Valid, 11533 Invalid, 5 Unknown, 0 Unchecked, 52.4s Time] [2022-11-16 12:42:24,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7481 states. [2022-11-16 12:42:24,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7481 to 7200. [2022-11-16 12:42:24,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7200 states, 5329 states have (on average 1.4535560142615875) internal successors, (7746), 5413 states have internal predecessors, (7746), 1615 states have call successors, (1615), 246 states have call predecessors, (1615), 255 states have return successors, (1636), 1578 states have call predecessors, (1636), 1589 states have call successors, (1636) [2022-11-16 12:42:24,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7200 states to 7200 states and 10997 transitions. [2022-11-16 12:42:24,967 INFO L78 Accepts]: Start accepts. Automaton has 7200 states and 10997 transitions. Word has length 105 [2022-11-16 12:42:24,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:42:24,967 INFO L495 AbstractCegarLoop]: Abstraction has 7200 states and 10997 transitions. [2022-11-16 12:42:24,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-16 12:42:24,968 INFO L276 IsEmpty]: Start isEmpty. Operand 7200 states and 10997 transitions. [2022-11-16 12:42:24,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-16 12:42:24,979 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:42:24,979 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:42:24,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 12:42:24,980 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:42:24,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:42:24,980 INFO L85 PathProgramCache]: Analyzing trace with hash -455631893, now seen corresponding path program 1 times [2022-11-16 12:42:24,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:42:24,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575105286] [2022-11-16 12:42:24,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:42:24,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:42:25,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:27,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 12:42:27,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:27,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 12:42:27,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:27,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-16 12:42:27,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:27,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-16 12:42:27,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:27,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-16 12:42:27,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:27,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-16 12:42:27,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:27,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:42:27,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:27,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:42:27,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:27,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-16 12:42:27,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:27,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-16 12:42:28,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:28,128 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-16 12:42:28,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:42:28,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575105286] [2022-11-16 12:42:28,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575105286] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:42:28,129 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:42:28,129 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-16 12:42:28,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668931629] [2022-11-16 12:42:28,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:42:28,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 12:42:28,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:42:28,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 12:42:28,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:42:28,133 INFO L87 Difference]: Start difference. First operand 7200 states and 10997 transitions. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 7 states have internal predecessors, (80), 4 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-16 12:42:32,047 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:42:37,091 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:42:39,202 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:42:43,064 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:43:05,231 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:43:08,337 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:43:38,230 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:44:27,023 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:44:35,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:44:35,827 INFO L93 Difference]: Finished difference Result 15518 states and 23889 transitions. [2022-11-16 12:44:35,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 12:44:35,827 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 7 states have internal predecessors, (80), 4 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 110 [2022-11-16 12:44:35,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:44:35,868 INFO L225 Difference]: With dead ends: 15518 [2022-11-16 12:44:35,868 INFO L226 Difference]: Without dead ends: 8339 [2022-11-16 12:44:35,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2022-11-16 12:44:35,893 INFO L413 NwaCegarLoop]: 1778 mSDtfsCounter, 4261 mSDsluCounter, 11022 mSDsCounter, 0 mSdLazyCounter, 34494 mSolverCounterSat, 1273 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 119.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4894 SdHoareTripleChecker+Valid, 12800 SdHoareTripleChecker+Invalid, 35771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.6s SdHoareTripleChecker+Time, 1273 IncrementalHoareTripleChecker+Valid, 34494 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 125.7s IncrementalHoareTripleChecker+Time [2022-11-16 12:44:35,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4894 Valid, 12800 Invalid, 35771 Unknown, 0 Unchecked, 0.6s Time], IncrementalHoareTripleChecker [1273 Valid, 34494 Invalid, 4 Unknown, 0 Unchecked, 125.7s Time] [2022-11-16 12:44:35,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8339 states. [2022-11-16 12:44:36,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8339 to 7269. [2022-11-16 12:44:36,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7269 states, 5385 states have (on average 1.4531104921077065) internal successors, (7825), 5473 states have internal predecessors, (7825), 1626 states have call successors, (1626), 248 states have call predecessors, (1626), 257 states have return successors, (1647), 1585 states have call predecessors, (1647), 1600 states have call successors, (1647) [2022-11-16 12:44:36,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7269 states to 7269 states and 11098 transitions. [2022-11-16 12:44:36,389 INFO L78 Accepts]: Start accepts. Automaton has 7269 states and 11098 transitions. Word has length 110 [2022-11-16 12:44:36,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:44:36,391 INFO L495 AbstractCegarLoop]: Abstraction has 7269 states and 11098 transitions. [2022-11-16 12:44:36,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 7 states have internal predecessors, (80), 4 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-16 12:44:36,391 INFO L276 IsEmpty]: Start isEmpty. Operand 7269 states and 11098 transitions. [2022-11-16 12:44:36,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-11-16 12:44:36,398 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:44:36,398 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:44:36,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 12:44:36,398 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:44:36,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:44:36,399 INFO L85 PathProgramCache]: Analyzing trace with hash 1871040918, now seen corresponding path program 1 times [2022-11-16 12:44:36,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:44:36,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276229862] [2022-11-16 12:44:36,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:44:36,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:44:36,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:44:37,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 12:44:37,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:44:37,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 12:44:37,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:44:37,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-16 12:44:37,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:44:37,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 12:44:37,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:44:37,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-16 12:44:37,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:44:37,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-16 12:44:37,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:44:37,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:44:37,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:44:37,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:44:37,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:44:37,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-16 12:44:37,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:44:38,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-16 12:44:38,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:44:38,273 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-16 12:44:38,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:44:38,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276229862] [2022-11-16 12:44:38,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276229862] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:44:38,274 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:44:38,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:44:38,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033640362] [2022-11-16 12:44:38,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:44:38,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:44:38,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:44:38,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:44:38,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:44:38,276 INFO L87 Difference]: Start difference. First operand 7269 states and 11098 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 4 states have internal predecessors, (75), 3 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-16 12:44:40,976 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:44:44,281 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:44:47,362 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:44:59,886 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:45:15,903 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:45:45,612 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:45:48,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:45:48,890 INFO L93 Difference]: Finished difference Result 7839 states and 11967 transitions. [2022-11-16 12:45:48,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:45:48,891 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 4 states have internal predecessors, (75), 3 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 105 [2022-11-16 12:45:48,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:45:48,923 INFO L225 Difference]: With dead ends: 7839 [2022-11-16 12:45:48,923 INFO L226 Difference]: Without dead ends: 7836 [2022-11-16 12:45:48,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:45:48,928 INFO L413 NwaCegarLoop]: 1333 mSDtfsCounter, 7686 mSDsluCounter, 2661 mSDsCounter, 0 mSdLazyCounter, 14505 mSolverCounterSat, 2823 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 65.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8321 SdHoareTripleChecker+Valid, 3994 SdHoareTripleChecker+Invalid, 17332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 2823 IncrementalHoareTripleChecker+Valid, 14505 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 69.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:45:48,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8321 Valid, 3994 Invalid, 17332 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [2823 Valid, 14505 Invalid, 4 Unknown, 0 Unchecked, 69.3s Time] [2022-11-16 12:45:48,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7836 states. [2022-11-16 12:45:49,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7836 to 7520. [2022-11-16 12:45:49,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7520 states, 5571 states have (on average 1.4505474780111292) internal successors, (8081), 5659 states have internal predecessors, (8081), 1667 states have call successors, (1667), 272 states have call predecessors, (1667), 281 states have return successors, (1688), 1630 states have call predecessors, (1688), 1641 states have call successors, (1688) [2022-11-16 12:45:49,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7520 states to 7520 states and 11436 transitions. [2022-11-16 12:45:49,404 INFO L78 Accepts]: Start accepts. Automaton has 7520 states and 11436 transitions. Word has length 105 [2022-11-16 12:45:49,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:45:49,405 INFO L495 AbstractCegarLoop]: Abstraction has 7520 states and 11436 transitions. [2022-11-16 12:45:49,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 4 states have internal predecessors, (75), 3 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-16 12:45:49,405 INFO L276 IsEmpty]: Start isEmpty. Operand 7520 states and 11436 transitions. [2022-11-16 12:45:49,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-16 12:45:49,415 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:45:49,415 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:45:49,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 12:45:49,415 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:45:49,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:45:49,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1986914029, now seen corresponding path program 1 times [2022-11-16 12:45:49,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:45:49,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204987355] [2022-11-16 12:45:49,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:45:49,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:45:49,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:45:50,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 12:45:50,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:45:50,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 12:45:50,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:45:50,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-16 12:45:50,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:45:50,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-16 12:45:50,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:45:50,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-16 12:45:50,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:45:50,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-16 12:45:50,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:45:50,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-16 12:45:50,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:45:50,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-16 12:45:50,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:45:50,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-16 12:45:50,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:45:50,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-16 12:45:50,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:45:50,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-16 12:45:50,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:45:50,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-16 12:45:50,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:45:50,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-16 12:45:50,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:45:50,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-16 12:45:50,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:45:50,449 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-16 12:45:50,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:45:50,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204987355] [2022-11-16 12:45:50,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204987355] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:45:50,450 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:45:50,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:45:50,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953220650] [2022-11-16 12:45:50,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:45:50,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:45:50,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:45:50,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:45:50,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:45:50,452 INFO L87 Difference]: Start difference. First operand 7520 states and 11436 transitions. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 4 states have internal predecessors, (88), 3 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-16 12:45:54,307 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:46:07,415 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:46:22,768 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:46:51,541 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:46:56,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:46:56,121 INFO L93 Difference]: Finished difference Result 15363 states and 23415 transitions. [2022-11-16 12:46:56,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:46:56,122 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 4 states have internal predecessors, (88), 3 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 132 [2022-11-16 12:46:56,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:46:56,161 INFO L225 Difference]: With dead ends: 15363 [2022-11-16 12:46:56,161 INFO L226 Difference]: Without dead ends: 7858 [2022-11-16 12:46:56,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:46:56,194 INFO L413 NwaCegarLoop]: 1062 mSDtfsCounter, 6840 mSDsluCounter, 3107 mSDsCounter, 0 mSdLazyCounter, 16261 mSolverCounterSat, 2679 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 60.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7359 SdHoareTripleChecker+Valid, 4169 SdHoareTripleChecker+Invalid, 18944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 2679 IncrementalHoareTripleChecker+Valid, 16261 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 64.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:46:56,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7359 Valid, 4169 Invalid, 18944 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [2679 Valid, 16261 Invalid, 4 Unknown, 0 Unchecked, 64.4s Time] [2022-11-16 12:46:56,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7858 states. [2022-11-16 12:46:56,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7858 to 7517. [2022-11-16 12:46:56,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7517 states, 5570 states have (on average 1.4499102333931777) internal successors, (8076), 5658 states have internal predecessors, (8076), 1665 states have call successors, (1665), 272 states have call predecessors, (1665), 281 states have return successors, (1686), 1628 states have call predecessors, (1686), 1639 states have call successors, (1686) [2022-11-16 12:46:56,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7517 states to 7517 states and 11427 transitions. [2022-11-16 12:46:56,827 INFO L78 Accepts]: Start accepts. Automaton has 7517 states and 11427 transitions. Word has length 132 [2022-11-16 12:46:56,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:46:56,828 INFO L495 AbstractCegarLoop]: Abstraction has 7517 states and 11427 transitions. [2022-11-16 12:46:56,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 4 states have internal predecessors, (88), 3 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-16 12:46:56,828 INFO L276 IsEmpty]: Start isEmpty. Operand 7517 states and 11427 transitions. [2022-11-16 12:46:56,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-11-16 12:46:56,840 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:46:56,840 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:46:56,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 12:46:56,840 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:46:56,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:46:56,841 INFO L85 PathProgramCache]: Analyzing trace with hash -26353148, now seen corresponding path program 1 times [2022-11-16 12:46:56,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:46:56,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990731082] [2022-11-16 12:46:56,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:46:56,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:46:57,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:46:57,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 12:46:57,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:46:57,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 12:46:57,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:46:57,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-16 12:46:57,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:46:57,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-16 12:46:57,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:46:57,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-16 12:46:57,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:46:57,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-16 12:46:57,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:46:57,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:46:57,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:46:57,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:46:57,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:46:57,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-16 12:46:57,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:46:58,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-16 12:46:58,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:46:58,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:46:58,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:46:58,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-16 12:46:58,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:46:58,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-16 12:46:58,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:46:58,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:46:58,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:46:58,181 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-16 12:46:58,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:46:58,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990731082] [2022-11-16 12:46:58,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990731082] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:46:58,182 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:46:58,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 12:46:58,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141879109] [2022-11-16 12:46:58,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:46:58,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:46:58,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:46:58,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:46:58,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:46:58,184 INFO L87 Difference]: Start difference. First operand 7517 states and 11427 transitions. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (19), 7 states have call predecessors, (19), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2022-11-16 12:47:02,105 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:47:06,351 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:47:08,349 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:47:20,032 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:47:35,286 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:48:03,587 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:48:08,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:48:08,169 INFO L93 Difference]: Finished difference Result 15642 states and 23855 transitions. [2022-11-16 12:48:08,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 12:48:08,170 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (19), 7 states have call predecessors, (19), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 144 [2022-11-16 12:48:08,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:48:08,211 INFO L225 Difference]: With dead ends: 15642 [2022-11-16 12:48:08,211 INFO L226 Difference]: Without dead ends: 8146 [2022-11-16 12:48:08,238 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:48:08,239 INFO L413 NwaCegarLoop]: 1048 mSDtfsCounter, 7580 mSDsluCounter, 2661 mSDsCounter, 0 mSdLazyCounter, 15706 mSolverCounterSat, 3687 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 64.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8116 SdHoareTripleChecker+Valid, 3709 SdHoareTripleChecker+Invalid, 19398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 3687 IncrementalHoareTripleChecker+Valid, 15706 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 68.7s IncrementalHoareTripleChecker+Time [2022-11-16 12:48:08,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8116 Valid, 3709 Invalid, 19398 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [3687 Valid, 15706 Invalid, 5 Unknown, 0 Unchecked, 68.7s Time] [2022-11-16 12:48:08,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8146 states. [2022-11-16 12:48:08,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8146 to 7520. [2022-11-16 12:48:08,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7520 states, 5572 states have (on average 1.449748743718593) internal successors, (8078), 5661 states have internal predecessors, (8078), 1665 states have call successors, (1665), 272 states have call predecessors, (1665), 282 states have return successors, (1691), 1628 states have call predecessors, (1691), 1639 states have call successors, (1691) [2022-11-16 12:48:08,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7520 states to 7520 states and 11434 transitions. [2022-11-16 12:48:08,982 INFO L78 Accepts]: Start accepts. Automaton has 7520 states and 11434 transitions. Word has length 144 [2022-11-16 12:48:08,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:48:08,983 INFO L495 AbstractCegarLoop]: Abstraction has 7520 states and 11434 transitions. [2022-11-16 12:48:08,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (19), 7 states have call predecessors, (19), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2022-11-16 12:48:08,984 INFO L276 IsEmpty]: Start isEmpty. Operand 7520 states and 11434 transitions. [2022-11-16 12:48:08,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-11-16 12:48:08,996 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:48:08,996 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:48:08,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 12:48:08,996 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:48:08,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:48:08,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1165126518, now seen corresponding path program 1 times [2022-11-16 12:48:08,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:48:08,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616486170] [2022-11-16 12:48:08,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:48:08,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:48:09,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:48:10,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 12:48:10,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:48:10,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 12:48:10,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:48:10,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-16 12:48:10,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:48:10,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 12:48:10,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:48:10,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-16 12:48:10,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:48:10,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-16 12:48:10,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:48:10,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:48:10,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:48:10,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:48:10,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:48:10,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-16 12:48:10,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:48:10,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-16 12:48:10,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:48:10,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:48:10,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:48:10,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-16 12:48:10,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:48:10,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-16 12:48:10,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:48:10,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:48:10,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:48:10,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-16 12:48:10,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:48:10,601 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-16 12:48:10,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:48:10,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616486170] [2022-11-16 12:48:10,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616486170] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:48:10,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1309298888] [2022-11-16 12:48:10,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:48:10,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:48:10,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03f10526-3f68-4348-9b96-c6c60eff59ef/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:48:10,607 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03f10526-3f68-4348-9b96-c6c60eff59ef/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:48:10,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03f10526-3f68-4348-9b96-c6c60eff59ef/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 12:48:13,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:48:13,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 10290 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 12:48:13,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:48:13,673 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 12:48:13,674 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:48:14,139 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-16 12:48:14,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1309298888] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:48:14,140 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:48:14,140 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 19 [2022-11-16 12:48:14,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029733932] [2022-11-16 12:48:14,140 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:48:14,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 12:48:14,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:48:14,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 12:48:14,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2022-11-16 12:48:14,142 INFO L87 Difference]: Start difference. First operand 7520 states and 11434 transitions. Second operand has 19 states, 19 states have (on average 11.736842105263158) internal successors, (223), 14 states have internal predecessors, (223), 3 states have call successors, (46), 7 states have call predecessors, (46), 2 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2022-11-16 12:48:17,670 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:48:26,236 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:48:51,967 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:48:54,359 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:48:59,981 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:49:28,255 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:49:57,548 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-16 12:50:34,196 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:50:44,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:50:44,614 INFO L93 Difference]: Finished difference Result 15771 states and 24059 transitions. [2022-11-16 12:50:44,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 12:50:44,615 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 11.736842105263158) internal successors, (223), 14 states have internal predecessors, (223), 3 states have call successors, (46), 7 states have call predecessors, (46), 2 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) Word has length 150 [2022-11-16 12:50:44,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:50:44,647 INFO L225 Difference]: With dead ends: 15771 [2022-11-16 12:50:44,647 INFO L226 Difference]: Without dead ends: 8268 [2022-11-16 12:50:44,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 318 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=103, Invalid=359, Unknown=0, NotChecked=0, Total=462 [2022-11-16 12:50:44,668 INFO L413 NwaCegarLoop]: 1061 mSDtfsCounter, 7630 mSDsluCounter, 6891 mSDsCounter, 0 mSdLazyCounter, 37614 mSolverCounterSat, 3710 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 141.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8178 SdHoareTripleChecker+Valid, 7952 SdHoareTripleChecker+Invalid, 41330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.6s SdHoareTripleChecker+Time, 3710 IncrementalHoareTripleChecker+Valid, 37614 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 148.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:50:44,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8178 Valid, 7952 Invalid, 41330 Unknown, 0 Unchecked, 0.6s Time], IncrementalHoareTripleChecker [3710 Valid, 37614 Invalid, 6 Unknown, 0 Unchecked, 148.4s Time] [2022-11-16 12:50:44,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8268 states. [2022-11-16 12:50:45,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8268 to 7540. [2022-11-16 12:50:45,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7540 states, 5590 states have (on average 1.448479427549195) internal successors, (8097), 5679 states have internal predecessors, (8097), 1667 states have call successors, (1667), 272 states have call predecessors, (1667), 282 states have return successors, (1693), 1630 states have call predecessors, (1693), 1641 states have call successors, (1693) [2022-11-16 12:50:45,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7540 states to 7540 states and 11457 transitions. [2022-11-16 12:50:45,214 INFO L78 Accepts]: Start accepts. Automaton has 7540 states and 11457 transitions. Word has length 150 [2022-11-16 12:50:45,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:50:45,215 INFO L495 AbstractCegarLoop]: Abstraction has 7540 states and 11457 transitions. [2022-11-16 12:50:45,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 11.736842105263158) internal successors, (223), 14 states have internal predecessors, (223), 3 states have call successors, (46), 7 states have call predecessors, (46), 2 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2022-11-16 12:50:45,215 INFO L276 IsEmpty]: Start isEmpty. Operand 7540 states and 11457 transitions. [2022-11-16 12:50:45,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-11-16 12:50:45,230 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:50:45,230 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:50:45,263 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03f10526-3f68-4348-9b96-c6c60eff59ef/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-16 12:50:45,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03f10526-3f68-4348-9b96-c6c60eff59ef/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-16 12:50:45,447 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:50:45,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:50:45,447 INFO L85 PathProgramCache]: Analyzing trace with hash -587735313, now seen corresponding path program 1 times [2022-11-16 12:50:45,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:50:45,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108539048] [2022-11-16 12:50:45,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:50:45,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:50:45,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:50:46,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 12:50:46,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:50:46,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 12:50:46,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:50:46,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-16 12:50:46,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:50:46,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-16 12:50:46,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:50:46,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:50:46,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:50:46,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-16 12:50:46,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:50:46,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-16 12:50:46,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:50:46,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-16 12:50:46,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:50:46,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-16 12:50:46,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:50:46,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-16 12:50:46,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:50:46,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-16 12:50:46,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:50:46,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:50:46,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:50:46,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-16 12:50:46,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:50:46,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-16 12:50:46,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:50:46,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-16 12:50:46,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:50:46,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-16 12:50:46,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:50:46,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-11-16 12:50:46,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:50:46,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-11-16 12:50:46,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:50:46,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-11-16 12:50:46,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:50:46,670 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2022-11-16 12:50:46,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:50:46,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108539048] [2022-11-16 12:50:46,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108539048] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:50:46,671 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:50:46,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:50:46,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639088939] [2022-11-16 12:50:46,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:50:46,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:50:46,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:50:46,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:50:46,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:50:46,673 INFO L87 Difference]: Start difference. First operand 7540 states and 11457 transitions. Second operand has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (26), 6 states have call predecessors, (26), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-16 12:50:51,671 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:51:05,674 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:51:08,700 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:51:25,180 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []