./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point_ldv-val-v0.8.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ade15093-a170-4e37-9a15-1808fa3167c9/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ade15093-a170-4e37-9a15-1808fa3167c9/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ade15093-a170-4e37-9a15-1808fa3167c9/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ade15093-a170-4e37-9a15-1808fa3167c9/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point_ldv-val-v0.8.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ade15093-a170-4e37-9a15-1808fa3167c9/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ade15093-a170-4e37-9a15-1808fa3167c9/bin/uautomizer-vX5HgA9Q3a --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 bf5e73d985bafa5e008f16fba6fb54da90c4b127699bd918a748611ea9b79793 --- 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-b5237d8 [2022-11-21 09:07:46,813 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 09:07:46,816 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 09:07:46,868 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 09:07:46,870 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 09:07:46,875 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 09:07:46,878 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 09:07:46,882 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 09:07:46,885 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 09:07:46,892 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 09:07:46,895 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 09:07:46,898 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 09:07:46,899 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 09:07:46,902 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 09:07:46,908 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 09:07:46,910 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 09:07:46,911 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 09:07:46,912 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 09:07:46,914 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 09:07:46,917 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 09:07:46,919 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 09:07:46,922 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 09:07:46,925 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 09:07:46,927 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 09:07:46,938 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 09:07:46,938 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 09:07:46,939 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 09:07:46,940 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 09:07:46,941 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 09:07:46,942 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 09:07:46,942 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 09:07:46,943 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 09:07:46,944 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 09:07:46,945 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 09:07:46,946 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 09:07:46,947 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 09:07:46,948 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 09:07:46,948 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 09:07:46,949 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 09:07:46,950 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 09:07:46,951 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 09:07:46,954 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ade15093-a170-4e37-9a15-1808fa3167c9/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-21 09:07:46,982 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 09:07:46,982 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 09:07:46,982 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 09:07:46,983 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 09:07:46,984 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 09:07:46,984 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 09:07:46,985 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 09:07:46,985 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 09:07:46,986 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 09:07:46,986 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 09:07:46,986 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 09:07:46,987 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 09:07:46,987 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 09:07:46,987 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 09:07:46,988 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 09:07:46,988 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 09:07:46,988 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 09:07:46,988 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 09:07:46,989 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 09:07:46,989 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 09:07:46,989 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 09:07:46,990 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 09:07:46,990 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 09:07:46,990 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 09:07:46,991 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 09:07:46,991 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 09:07:46,991 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 09:07:46,992 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 09:07:46,992 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 09:07:46,992 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 09:07:46,992 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_ade15093-a170-4e37-9a15-1808fa3167c9/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ade15093-a170-4e37-9a15-1808fa3167c9/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bf5e73d985bafa5e008f16fba6fb54da90c4b127699bd918a748611ea9b79793 [2022-11-21 09:07:47,333 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 09:07:47,367 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 09:07:47,371 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 09:07:47,373 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 09:07:47,373 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 09:07:47,375 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ade15093-a170-4e37-9a15-1808fa3167c9/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point_ldv-val-v0.8.cil.out.i [2022-11-21 09:07:51,204 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 09:07:51,908 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 09:07:51,909 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ade15093-a170-4e37-9a15-1808fa3167c9/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point_ldv-val-v0.8.cil.out.i [2022-11-21 09:07:51,950 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ade15093-a170-4e37-9a15-1808fa3167c9/bin/uautomizer-vX5HgA9Q3a/data/67cc6b37a/90102f1cb789467380b89870f0e215fb/FLAG08acf466d [2022-11-21 09:07:51,968 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ade15093-a170-4e37-9a15-1808fa3167c9/bin/uautomizer-vX5HgA9Q3a/data/67cc6b37a/90102f1cb789467380b89870f0e215fb [2022-11-21 09:07:51,972 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 09:07:51,974 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 09:07:51,975 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 09:07:51,976 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 09:07:51,980 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 09:07:51,981 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:07:51" (1/1) ... [2022-11-21 09:07:51,983 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56bdd0cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:07:51, skipping insertion in model container [2022-11-21 09:07:51,983 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:07:51" (1/1) ... [2022-11-21 09:07:51,993 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 09:07:52,112 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 09:07:53,486 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ade15093-a170-4e37-9a15-1808fa3167c9/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point_ldv-val-v0.8.cil.out.i[158797,158810] [2022-11-21 09:07:53,526 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 09:07:53,568 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 09:07:54,027 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ade15093-a170-4e37-9a15-1808fa3167c9/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point_ldv-val-v0.8.cil.out.i[158797,158810] [2022-11-21 09:07:54,050 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 09:07:54,130 INFO L208 MainTranslator]: Completed translation [2022-11-21 09:07:54,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:07:54 WrapperNode [2022-11-21 09:07:54,132 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 09:07:54,134 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 09:07:54,135 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 09:07:54,135 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 09:07:54,145 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:07:54" (1/1) ... [2022-11-21 09:07:54,224 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:07:54" (1/1) ... [2022-11-21 09:07:54,341 INFO L138 Inliner]: procedures = 189, calls = 1289, calls flagged for inlining = 74, calls inlined = 74, statements flattened = 3223 [2022-11-21 09:07:54,342 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 09:07:54,343 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 09:07:54,343 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 09:07:54,343 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 09:07:54,356 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:07:54" (1/1) ... [2022-11-21 09:07:54,356 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:07:54" (1/1) ... [2022-11-21 09:07:54,393 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:07:54" (1/1) ... [2022-11-21 09:07:54,393 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:07:54" (1/1) ... [2022-11-21 09:07:54,497 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:07:54" (1/1) ... [2022-11-21 09:07:54,513 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:07:54" (1/1) ... [2022-11-21 09:07:54,547 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:07:54" (1/1) ... [2022-11-21 09:07:54,557 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:07:54" (1/1) ... [2022-11-21 09:07:54,590 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 09:07:54,592 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 09:07:54,592 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 09:07:54,592 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 09:07:54,593 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:07:54" (1/1) ... [2022-11-21 09:07:54,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 09:07:54,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ade15093-a170-4e37-9a15-1808fa3167c9/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:07:54,630 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ade15093-a170-4e37-9a15-1808fa3167c9/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 09:07:54,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ade15093-a170-4e37-9a15-1808fa3167c9/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 09:07:54,694 INFO L130 BoogieDeclarations]: Found specification of procedure printer_req_free [2022-11-21 09:07:54,694 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_req_free [2022-11-21 09:07:54,694 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~int [2022-11-21 09:07:54,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~int [2022-11-21 09:07:54,695 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int_nonpositive [2022-11-21 09:07:54,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int_nonpositive [2022-11-21 09:07:54,695 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2022-11-21 09:07:54,695 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2022-11-21 09:07:54,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-21 09:07:54,696 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-21 09:07:54,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-21 09:07:54,696 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-21 09:07:54,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-21 09:07:54,697 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-21 09:07:54,697 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-21 09:07:54,697 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-21 09:07:54,698 INFO L130 BoogieDeclarations]: Found specification of procedure get_gadget_data [2022-11-21 09:07:54,698 INFO L138 BoogieDeclarations]: Found implementation of procedure get_gadget_data [2022-11-21 09:07:54,698 INFO L130 BoogieDeclarations]: Found specification of procedure printer_poll [2022-11-21 09:07:54,698 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_poll [2022-11-21 09:07:54,698 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-21 09:07:54,699 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-21 09:07:54,699 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_free_request [2022-11-21 09:07:54,699 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_free_request [2022-11-21 09:07:54,699 INFO L130 BoogieDeclarations]: Found specification of procedure printer_reset_interface [2022-11-21 09:07:54,699 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_reset_interface [2022-11-21 09:07:54,700 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-11-21 09:07:54,700 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-11-21 09:07:54,700 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-21 09:07:54,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-21 09:07:54,700 INFO L130 BoogieDeclarations]: Found specification of procedure printer_soft_reset [2022-11-21 09:07:54,701 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_soft_reset [2022-11-21 09:07:54,701 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_class [2022-11-21 09:07:54,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_class [2022-11-21 09:07:54,702 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_init [2022-11-21 09:07:54,703 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_init [2022-11-21 09:07:54,703 INFO L130 BoogieDeclarations]: Found specification of procedure set_printer_interface [2022-11-21 09:07:54,704 INFO L138 BoogieDeclarations]: Found implementation of procedure set_printer_interface [2022-11-21 09:07:54,704 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rx_reqs [2022-11-21 09:07:54,704 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rx_reqs [2022-11-21 09:07:54,705 INFO L130 BoogieDeclarations]: Found specification of procedure class_destroy [2022-11-21 09:07:54,705 INFO L138 BoogieDeclarations]: Found implementation of procedure class_destroy [2022-11-21 09:07:54,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 09:07:54,705 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-21 09:07:54,705 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-21 09:07:54,706 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-21 09:07:54,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-21 09:07:54,706 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_queue [2022-11-21 09:07:54,707 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_queue [2022-11-21 09:07:54,707 INFO L130 BoogieDeclarations]: Found specification of procedure set_interface [2022-11-21 09:07:54,707 INFO L138 BoogieDeclarations]: Found implementation of procedure set_interface [2022-11-21 09:07:54,714 INFO L130 BoogieDeclarations]: Found specification of procedure printer_setup_complete [2022-11-21 09:07:54,714 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_setup_complete [2022-11-21 09:07:54,715 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-21 09:07:54,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-21 09:07:54,715 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-21 09:07:54,715 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-21 09:07:54,717 INFO L130 BoogieDeclarations]: Found specification of procedure usb_gadget_vbus_draw [2022-11-21 09:07:54,717 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_gadget_vbus_draw [2022-11-21 09:07:54,717 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-21 09:07:54,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-21 09:07:54,718 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-21 09:07:54,719 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-21 09:07:54,719 INFO L130 BoogieDeclarations]: Found specification of procedure printer_write [2022-11-21 09:07:54,719 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_write [2022-11-21 09:07:54,719 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-21 09:07:54,719 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2022-11-21 09:07:54,720 INFO L130 BoogieDeclarations]: Found specification of procedure printer_unbind [2022-11-21 09:07:54,720 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_unbind [2022-11-21 09:07:54,720 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-21 09:07:54,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-21 09:07:54,720 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-21 09:07:54,721 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-21 09:07:54,721 INFO L130 BoogieDeclarations]: Found specification of procedure printer_close [2022-11-21 09:07:54,721 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_close [2022-11-21 09:07:54,721 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2022-11-21 09:07:54,722 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2022-11-21 09:07:54,723 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 09:07:54,723 INFO L130 BoogieDeclarations]: Found specification of procedure poll_wait [2022-11-21 09:07:54,723 INFO L138 BoogieDeclarations]: Found implementation of procedure poll_wait [2022-11-21 09:07:54,723 INFO L130 BoogieDeclarations]: Found specification of procedure printer_fsync [2022-11-21 09:07:54,723 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_fsync [2022-11-21 09:07:54,724 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-21 09:07:54,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-21 09:07:54,725 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 09:07:54,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-21 09:07:54,725 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-21 09:07:54,726 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-21 09:07:54,727 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-21 09:07:54,727 INFO L130 BoogieDeclarations]: Found specification of procedure init_utsname [2022-11-21 09:07:54,727 INFO L138 BoogieDeclarations]: Found implementation of procedure init_utsname [2022-11-21 09:07:54,727 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_enable [2022-11-21 09:07:54,728 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_enable [2022-11-21 09:07:54,728 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-21 09:07:54,728 INFO L130 BoogieDeclarations]: Found specification of procedure printer_open [2022-11-21 09:07:54,728 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_open [2022-11-21 09:07:54,728 INFO L130 BoogieDeclarations]: Found specification of procedure printer_bind [2022-11-21 09:07:54,729 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_bind [2022-11-21 09:07:54,729 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-11-21 09:07:54,729 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-11-21 09:07:54,730 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-21 09:07:54,730 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-21 09:07:54,730 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-21 09:07:54,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-21 09:07:54,731 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2022-11-21 09:07:54,731 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2022-11-21 09:07:54,732 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-21 09:07:54,732 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-21 09:07:54,732 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2022-11-21 09:07:54,732 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2022-11-21 09:07:54,733 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_autoconfig [2022-11-21 09:07:54,733 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_autoconfig [2022-11-21 09:07:54,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 09:07:54,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-21 09:07:54,733 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-11-21 09:07:54,734 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-11-21 09:07:54,734 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait [2022-11-21 09:07:54,735 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait [2022-11-21 09:07:54,736 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-21 09:07:54,739 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-21 09:07:54,739 INFO L130 BoogieDeclarations]: Found specification of procedure printer_setup [2022-11-21 09:07:54,740 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_setup [2022-11-21 09:07:54,740 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2022-11-21 09:07:54,740 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2022-11-21 09:07:54,742 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_chrdev_region [2022-11-21 09:07:54,743 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_chrdev_region [2022-11-21 09:07:54,743 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-21 09:07:54,744 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-21 09:07:54,749 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-11-21 09:07:54,749 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-11-21 09:07:54,749 INFO L130 BoogieDeclarations]: Found specification of procedure set_gadget_data [2022-11-21 09:07:54,749 INFO L138 BoogieDeclarations]: Found implementation of procedure set_gadget_data [2022-11-21 09:07:54,749 INFO L130 BoogieDeclarations]: Found specification of procedure printer_req_alloc [2022-11-21 09:07:54,750 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_req_alloc [2022-11-21 09:07:54,750 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-21 09:07:54,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-21 09:07:54,750 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-11-21 09:07:54,750 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-11-21 09:07:54,750 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_disable [2022-11-21 09:07:54,751 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_disable [2022-11-21 09:07:54,751 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2022-11-21 09:07:54,751 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2022-11-21 09:07:54,751 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_chrdev_region [2022-11-21 09:07:54,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_chrdev_region [2022-11-21 09:07:54,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 09:07:54,857 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2022-11-21 09:07:54,858 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2022-11-21 09:07:54,858 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-21 09:07:54,858 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2022-11-21 09:07:54,858 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2022-11-21 09:07:54,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 09:07:54,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 09:07:54,858 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-21 09:07:54,858 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-21 09:07:55,754 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 09:07:55,758 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 09:07:56,116 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-21 09:08:18,454 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 09:08:18,486 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 09:08:18,496 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-21 09:08:18,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:08:18 BoogieIcfgContainer [2022-11-21 09:08:18,505 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 09:08:18,511 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 09:08:18,511 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 09:08:18,515 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 09:08:18,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 09:07:51" (1/3) ... [2022-11-21 09:08:18,517 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77f130f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:08:18, skipping insertion in model container [2022-11-21 09:08:18,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:07:54" (2/3) ... [2022-11-21 09:08:18,518 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77f130f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:08:18, skipping insertion in model container [2022-11-21 09:08:18,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:08:18" (3/3) ... [2022-11-21 09:08:18,521 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point_ldv-val-v0.8.cil.out.i [2022-11-21 09:08:18,545 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 09:08:18,546 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-21 09:08:18,676 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 09:08:18,683 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;@5a3f9dbd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 09:08:18,684 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-21 09:08:18,695 INFO L276 IsEmpty]: Start isEmpty. Operand has 1219 states, 827 states have (on average 1.3639661426844014) internal successors, (1128), 870 states have internal predecessors, (1128), 323 states have call successors, (323), 68 states have call predecessors, (323), 67 states have return successors, (318), 315 states have call predecessors, (318), 318 states have call successors, (318) [2022-11-21 09:08:18,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-11-21 09:08:18,715 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:08:18,716 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:08:18,717 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:08:18,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:08:18,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1906296499, now seen corresponding path program 1 times [2022-11-21 09:08:18,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:08:18,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464004587] [2022-11-21 09:08:18,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:08:18,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:08:19,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:19,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 09:08:20,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:20,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:08:20,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:20,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 09:08:20,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:20,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-21 09:08:20,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:20,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:08:20,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:20,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 09:08:20,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:20,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-21 09:08:20,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:20,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:08:20,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:20,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 09:08:20,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:20,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-21 09:08:20,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:20,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:08:20,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:20,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 09:08:20,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:20,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-21 09:08:20,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:20,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:08:20,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:20,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 09:08:20,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:20,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-21 09:08:20,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:20,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:08:20,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:20,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 09:08:20,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:20,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-21 09:08:20,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:20,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:08:20,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:20,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-21 09:08:20,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:20,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:08:20,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:20,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-11-21 09:08:20,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:20,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:08:20,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:20,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-21 09:08:20,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:20,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:08:20,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:20,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-21 09:08:20,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:20,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:08:20,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:20,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-11-21 09:08:20,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:20,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-11-21 09:08:20,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:20,358 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2022-11-21 09:08:20,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:08:20,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464004587] [2022-11-21 09:08:20,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464004587] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:08:20,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:08:20,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 09:08:20,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256348182] [2022-11-21 09:08:20,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:08:20,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 09:08:20,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:08:20,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 09:08:20,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-21 09:08:20,419 INFO L87 Difference]: Start difference. First operand has 1219 states, 827 states have (on average 1.3639661426844014) internal successors, (1128), 870 states have internal predecessors, (1128), 323 states have call successors, (323), 68 states have call predecessors, (323), 67 states have return successors, (318), 315 states have call predecessors, (318), 318 states have call successors, (318) Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-21 09:08:22,529 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 09:08:24,557 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 [] [2022-11-21 09:08:36,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:08:36,302 INFO L93 Difference]: Finished difference Result 3997 states and 6023 transitions. [2022-11-21 09:08:36,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 09:08:36,305 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 173 [2022-11-21 09:08:36,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:08:36,377 INFO L225 Difference]: With dead ends: 3997 [2022-11-21 09:08:36,378 INFO L226 Difference]: Without dead ends: 2766 [2022-11-21 09:08:36,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-11-21 09:08:36,407 INFO L413 NwaCegarLoop]: 1590 mSDtfsCounter, 3920 mSDsluCounter, 1974 mSDsCounter, 0 mSdLazyCounter, 1951 mSolverCounterSat, 2830 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4159 SdHoareTripleChecker+Valid, 3564 SdHoareTripleChecker+Invalid, 4783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2830 IncrementalHoareTripleChecker+Valid, 1951 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.1s IncrementalHoareTripleChecker+Time [2022-11-21 09:08:36,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4159 Valid, 3564 Invalid, 4783 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2830 Valid, 1951 Invalid, 2 Unknown, 0 Unchecked, 15.1s Time] [2022-11-21 09:08:36,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2766 states. [2022-11-21 09:08:36,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2766 to 2289. [2022-11-21 09:08:36,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2289 states, 1566 states have (on average 1.3575989782886335) internal successors, (2126), 1626 states have internal predecessors, (2126), 593 states have call successors, (593), 130 states have call predecessors, (593), 129 states have return successors, (580), 574 states have call predecessors, (580), 580 states have call successors, (580) [2022-11-21 09:08:36,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2289 states to 2289 states and 3299 transitions. [2022-11-21 09:08:36,837 INFO L78 Accepts]: Start accepts. Automaton has 2289 states and 3299 transitions. Word has length 173 [2022-11-21 09:08:36,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:08:36,841 INFO L495 AbstractCegarLoop]: Abstraction has 2289 states and 3299 transitions. [2022-11-21 09:08:36,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-21 09:08:36,842 INFO L276 IsEmpty]: Start isEmpty. Operand 2289 states and 3299 transitions. [2022-11-21 09:08:36,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-11-21 09:08:36,857 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:08:36,858 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:08:36,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 09:08:36,859 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:08:36,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:08:36,860 INFO L85 PathProgramCache]: Analyzing trace with hash -2066720589, now seen corresponding path program 1 times [2022-11-21 09:08:36,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:08:36,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956906143] [2022-11-21 09:08:36,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:08:36,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:08:37,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:37,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 09:08:37,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:37,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:08:37,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:37,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 09:08:37,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:37,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-21 09:08:37,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:37,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:08:37,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:37,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 09:08:37,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:37,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-21 09:08:37,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:37,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:08:37,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:37,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 09:08:37,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:37,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-21 09:08:37,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:37,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:08:37,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:37,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 09:08:37,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:37,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-21 09:08:37,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:37,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:08:37,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:37,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 09:08:37,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:37,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-21 09:08:37,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:37,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:08:37,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:37,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 09:08:37,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:37,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-21 09:08:37,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:37,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:08:37,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:37,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-21 09:08:37,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:38,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:08:38,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:38,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-11-21 09:08:38,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:38,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:08:38,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:38,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-21 09:08:38,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:38,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:08:38,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:38,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-21 09:08:38,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:38,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:08:38,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:38,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-11-21 09:08:38,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:08:38,132 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2022-11-21 09:08:38,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:08:38,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956906143] [2022-11-21 09:08:38,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956906143] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:08:38,133 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:08:38,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 09:08:38,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406548139] [2022-11-21 09:08:38,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:08:38,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 09:08:38,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:08:38,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 09:08:38,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-21 09:08:38,138 INFO L87 Difference]: Start difference. First operand 2289 states and 3299 transitions. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-21 09:08:40,196 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 09:08:42,217 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 [] [2022-11-21 09:09:02,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:09:02,100 INFO L93 Difference]: Finished difference Result 6118 states and 9265 transitions. [2022-11-21 09:09:02,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 09:09:02,103 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 171 [2022-11-21 09:09:02,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:09:02,166 INFO L225 Difference]: With dead ends: 6118 [2022-11-21 09:09:02,166 INFO L226 Difference]: Without dead ends: 6094 [2022-11-21 09:09:02,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-21 09:09:02,175 INFO L413 NwaCegarLoop]: 1456 mSDtfsCounter, 4763 mSDsluCounter, 3269 mSDsCounter, 0 mSdLazyCounter, 4074 mSolverCounterSat, 3028 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5056 SdHoareTripleChecker+Valid, 4725 SdHoareTripleChecker+Invalid, 7104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3028 IncrementalHoareTripleChecker+Valid, 4074 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.1s IncrementalHoareTripleChecker+Time [2022-11-21 09:09:02,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5056 Valid, 4725 Invalid, 7104 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3028 Valid, 4074 Invalid, 2 Unknown, 0 Unchecked, 23.1s Time] [2022-11-21 09:09:02,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6094 states. [2022-11-21 09:09:02,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6094 to 4479. [2022-11-21 09:09:02,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4479 states, 3073 states have (on average 1.3579563944028636) internal successors, (4173), 3181 states have internal predecessors, (4173), 1154 states have call successors, (1154), 254 states have call predecessors, (1154), 251 states have return successors, (1142), 1127 states have call predecessors, (1142), 1142 states have call successors, (1142) [2022-11-21 09:09:02,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4479 states to 4479 states and 6469 transitions. [2022-11-21 09:09:02,578 INFO L78 Accepts]: Start accepts. Automaton has 4479 states and 6469 transitions. Word has length 171 [2022-11-21 09:09:02,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:09:02,580 INFO L495 AbstractCegarLoop]: Abstraction has 4479 states and 6469 transitions. [2022-11-21 09:09:02,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-21 09:09:02,580 INFO L276 IsEmpty]: Start isEmpty. Operand 4479 states and 6469 transitions. [2022-11-21 09:09:02,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-21 09:09:02,583 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:09:02,584 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:09:02,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 09:09:02,584 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:09:02,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:09:02,586 INFO L85 PathProgramCache]: Analyzing trace with hash 355329309, now seen corresponding path program 1 times [2022-11-21 09:09:02,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:09:02,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130516959] [2022-11-21 09:09:02,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:09:02,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:09:02,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:03,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 09:09:03,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:03,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:09:03,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:03,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 09:09:03,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:03,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-21 09:09:03,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:03,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:09:03,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:03,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 09:09:03,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:03,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-21 09:09:03,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:03,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:09:03,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:03,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 09:09:03,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:03,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-21 09:09:03,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:03,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:09:03,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:03,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 09:09:03,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:03,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-21 09:09:03,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:03,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:09:03,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:03,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 09:09:03,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:03,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-21 09:09:03,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:03,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:09:03,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:03,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 09:09:03,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:03,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-21 09:09:03,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:03,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:09:03,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:03,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-21 09:09:03,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:03,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:09:03,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:03,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-11-21 09:09:03,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:03,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:09:03,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:03,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-21 09:09:03,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:03,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:09:03,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:03,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-21 09:09:03,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:03,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:09:03,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:03,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-11-21 09:09:03,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:03,764 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2022-11-21 09:09:03,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:09:03,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130516959] [2022-11-21 09:09:03,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130516959] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:09:03,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:09:03,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 09:09:03,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598891683] [2022-11-21 09:09:03,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:09:03,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 09:09:03,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:09:03,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 09:09:03,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-21 09:09:03,768 INFO L87 Difference]: Start difference. First operand 4479 states and 6469 transitions. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-21 09:09:05,820 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 [] [2022-11-21 09:09:07,852 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 09:09:09,890 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 09:09:27,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:09:27,291 INFO L93 Difference]: Finished difference Result 16553 states and 24789 transitions. [2022-11-21 09:09:27,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 09:09:27,292 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 172 [2022-11-21 09:09:27,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:09:27,404 INFO L225 Difference]: With dead ends: 16553 [2022-11-21 09:09:27,405 INFO L226 Difference]: Without dead ends: 12104 [2022-11-21 09:09:27,437 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-21 09:09:27,439 INFO L413 NwaCegarLoop]: 1604 mSDtfsCounter, 4135 mSDsluCounter, 3463 mSDsCounter, 0 mSdLazyCounter, 3858 mSolverCounterSat, 2218 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4418 SdHoareTripleChecker+Valid, 5067 SdHoareTripleChecker+Invalid, 6079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2218 IncrementalHoareTripleChecker+Valid, 3858 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.5s IncrementalHoareTripleChecker+Time [2022-11-21 09:09:27,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4418 Valid, 5067 Invalid, 6079 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2218 Valid, 3858 Invalid, 3 Unknown, 0 Unchecked, 22.5s Time] [2022-11-21 09:09:27,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12104 states. [2022-11-21 09:09:28,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12104 to 8874. [2022-11-21 09:09:28,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8874 states, 6098 states have (on average 1.3592981305346015) internal successors, (8289), 6306 states have internal predecessors, (8289), 2280 states have call successors, (2280), 500 states have call predecessors, (2280), 495 states have return successors, (2262), 2235 states have call predecessors, (2262), 2262 states have call successors, (2262) [2022-11-21 09:09:28,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8874 states to 8874 states and 12831 transitions. [2022-11-21 09:09:28,359 INFO L78 Accepts]: Start accepts. Automaton has 8874 states and 12831 transitions. Word has length 172 [2022-11-21 09:09:28,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:09:28,360 INFO L495 AbstractCegarLoop]: Abstraction has 8874 states and 12831 transitions. [2022-11-21 09:09:28,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-21 09:09:28,362 INFO L276 IsEmpty]: Start isEmpty. Operand 8874 states and 12831 transitions. [2022-11-21 09:09:28,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-11-21 09:09:28,369 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:09:28,369 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:09:28,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 09:09:28,370 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:09:28,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:09:28,371 INFO L85 PathProgramCache]: Analyzing trace with hash 118863137, now seen corresponding path program 1 times [2022-11-21 09:09:28,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:09:28,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854723196] [2022-11-21 09:09:28,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:09:28,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:09:28,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:28,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 09:09:28,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:28,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:09:28,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:28,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 09:09:29,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:29,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-21 09:09:29,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:29,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:09:29,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:29,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 09:09:29,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:29,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-21 09:09:29,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:29,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:09:29,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:29,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 09:09:29,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:29,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-21 09:09:29,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:29,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:09:29,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:29,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 09:09:29,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:29,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-21 09:09:29,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:29,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:09:29,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:29,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 09:09:29,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:29,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-21 09:09:29,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:29,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:09:29,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:29,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 09:09:29,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:29,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-21 09:09:29,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:29,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:09:29,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:29,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-21 09:09:29,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:29,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:09:29,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:29,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-11-21 09:09:29,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:29,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:09:29,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:29,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-21 09:09:29,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:29,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:09:29,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:29,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-21 09:09:29,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:29,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:09:29,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:29,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-11-21 09:09:29,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:29,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-11-21 09:09:29,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:29,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:09:29,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:29,398 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2022-11-21 09:09:29,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:09:29,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854723196] [2022-11-21 09:09:29,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854723196] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:09:29,400 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:09:29,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 09:09:29,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852316009] [2022-11-21 09:09:29,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:09:29,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 09:09:29,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:09:29,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 09:09:29,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-21 09:09:29,404 INFO L87 Difference]: Start difference. First operand 8874 states and 12831 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-21 09:09:31,453 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 09:09:33,487 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 09:09:48,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:09:48,543 INFO L93 Difference]: Finished difference Result 32980 states and 49404 transitions. [2022-11-21 09:09:48,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 09:09:48,544 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 190 [2022-11-21 09:09:48,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:09:48,732 INFO L225 Difference]: With dead ends: 32980 [2022-11-21 09:09:48,732 INFO L226 Difference]: Without dead ends: 24133 [2022-11-21 09:09:48,789 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-21 09:09:48,790 INFO L413 NwaCegarLoop]: 1479 mSDtfsCounter, 5623 mSDsluCounter, 2502 mSDsCounter, 0 mSdLazyCounter, 2875 mSolverCounterSat, 3991 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5912 SdHoareTripleChecker+Valid, 3981 SdHoareTripleChecker+Invalid, 6868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3991 IncrementalHoareTripleChecker+Valid, 2875 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.6s IncrementalHoareTripleChecker+Time [2022-11-21 09:09:48,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5912 Valid, 3981 Invalid, 6868 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3991 Valid, 2875 Invalid, 2 Unknown, 0 Unchecked, 17.6s Time] [2022-11-21 09:09:48,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24133 states. [2022-11-21 09:09:50,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24133 to 17657. [2022-11-21 09:09:50,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17657 states, 12149 states have (on average 1.360029632068483) internal successors, (16523), 12553 states have internal predecessors, (16523), 4524 states have call successors, (4524), 991 states have call predecessors, (4524), 983 states have return successors, (4504), 4448 states have call predecessors, (4504), 4504 states have call successors, (4504) [2022-11-21 09:09:50,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17657 states to 17657 states and 25551 transitions. [2022-11-21 09:09:50,486 INFO L78 Accepts]: Start accepts. Automaton has 17657 states and 25551 transitions. Word has length 190 [2022-11-21 09:09:50,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:09:50,487 INFO L495 AbstractCegarLoop]: Abstraction has 17657 states and 25551 transitions. [2022-11-21 09:09:50,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-21 09:09:50,488 INFO L276 IsEmpty]: Start isEmpty. Operand 17657 states and 25551 transitions. [2022-11-21 09:09:50,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2022-11-21 09:09:50,494 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:09:50,494 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:09:50,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 09:09:50,495 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:09:50,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:09:50,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1480362508, now seen corresponding path program 1 times [2022-11-21 09:09:50,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:09:50,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607488011] [2022-11-21 09:09:50,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:09:50,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:09:50,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:51,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 09:09:51,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:51,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:09:51,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:51,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 09:09:51,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:51,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-21 09:09:51,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:51,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:09:51,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:51,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 09:09:51,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:51,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-21 09:09:51,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:51,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:09:51,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:51,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 09:09:51,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:51,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-21 09:09:51,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:51,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:09:51,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:51,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 09:09:51,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:51,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-21 09:09:51,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:51,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:09:51,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:51,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 09:09:51,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:51,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-21 09:09:51,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:51,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:09:51,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:51,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 09:09:51,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:51,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-21 09:09:51,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:51,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:09:51,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:52,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-21 09:09:52,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:52,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:09:52,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:52,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-11-21 09:09:52,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:52,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:09:52,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:52,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-21 09:09:52,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:52,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:09:52,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:52,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-21 09:09:52,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:52,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:09:52,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:52,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-11-21 09:09:52,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:52,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-11-21 09:09:52,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:52,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:09:52,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:52,342 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2022-11-21 09:09:52,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:09:52,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607488011] [2022-11-21 09:09:52,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607488011] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 09:09:52,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1988149597] [2022-11-21 09:09:52,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:09:52,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:09:52,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ade15093-a170-4e37-9a15-1808fa3167c9/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:09:52,352 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ade15093-a170-4e37-9a15-1808fa3167c9/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 09:09:52,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ade15093-a170-4e37-9a15-1808fa3167c9/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 09:09:58,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:58,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 2872 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-21 09:09:58,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:09:58,697 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-11-21 09:09:58,698 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 09:09:58,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1988149597] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:09:58,698 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 09:09:58,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 12 [2022-11-21 09:09:58,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459348429] [2022-11-21 09:09:58,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:09:58,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 09:09:58,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:09:58,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 09:09:58,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-11-21 09:09:58,706 INFO L87 Difference]: Start difference. First operand 17657 states and 25551 transitions. Second operand has 6 states, 5 states have (on average 13.2) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-21 09:10:00,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:10:00,476 INFO L93 Difference]: Finished difference Result 35349 states and 51151 transitions. [2022-11-21 09:10:00,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 09:10:00,477 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.2) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 192 [2022-11-21 09:10:00,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:10:00,615 INFO L225 Difference]: With dead ends: 35349 [2022-11-21 09:10:00,615 INFO L226 Difference]: Without dead ends: 17705 [2022-11-21 09:10:00,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 246 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-11-21 09:10:00,705 INFO L413 NwaCegarLoop]: 1715 mSDtfsCounter, 6 mSDsluCounter, 6840 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 8555 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 09:10:00,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 8555 Invalid, 64 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [4 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 09:10:00,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17705 states. [2022-11-21 09:10:02,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17705 to 17660. [2022-11-21 09:10:02,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17660 states, 12151 states have (on average 1.3600526705620937) internal successors, (16526), 12556 states have internal predecessors, (16526), 4524 states have call successors, (4524), 991 states have call predecessors, (4524), 984 states have return successors, (4505), 4448 states have call predecessors, (4505), 4504 states have call successors, (4505) [2022-11-21 09:10:02,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17660 states to 17660 states and 25555 transitions. [2022-11-21 09:10:02,523 INFO L78 Accepts]: Start accepts. Automaton has 17660 states and 25555 transitions. Word has length 192 [2022-11-21 09:10:02,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:10:02,523 INFO L495 AbstractCegarLoop]: Abstraction has 17660 states and 25555 transitions. [2022-11-21 09:10:02,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.2) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-21 09:10:02,524 INFO L276 IsEmpty]: Start isEmpty. Operand 17660 states and 25555 transitions. [2022-11-21 09:10:02,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2022-11-21 09:10:02,529 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:10:02,529 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:10:02,583 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ade15093-a170-4e37-9a15-1808fa3167c9/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-21 09:10:02,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ade15093-a170-4e37-9a15-1808fa3167c9/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:10:02,730 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:10:02,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:10:02,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1860550741, now seen corresponding path program 1 times [2022-11-21 09:10:02,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:10:02,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607513862] [2022-11-21 09:10:02,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:10:02,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:10:03,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:10:04,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 09:10:04,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:10:04,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:10:04,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:10:04,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 09:10:04,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:10:04,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-21 09:10:04,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:10:04,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:10:04,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:10:04,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 09:10:04,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:10:04,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-21 09:10:04,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:10:04,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:10:04,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:10:04,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 09:10:04,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:10:04,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-21 09:10:04,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:10:04,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:10:04,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:10:04,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 09:10:04,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:10:04,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-21 09:10:04,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:10:04,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:10:04,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:10:04,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 09:10:04,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:10:04,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-21 09:10:04,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:10:04,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:10:04,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:10:04,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 09:10:04,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:10:04,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-21 09:10:04,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:10:04,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:10:04,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:10:04,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-21 09:10:04,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:10:04,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:10:04,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:10:04,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-21 09:10:04,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:10:04,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:10:04,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:10:04,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-11-21 09:10:04,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:10:04,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:10:04,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:10:04,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-11-21 09:10:04,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:10:04,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:10:04,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:10:04,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-11-21 09:10:04,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:10:04,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-11-21 09:10:04,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:10:04,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:10:04,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:10:04,920 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2022-11-21 09:10:04,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:10:04,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607513862] [2022-11-21 09:10:04,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607513862] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 09:10:04,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1664783598] [2022-11-21 09:10:04,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:10:04,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:10:04,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ade15093-a170-4e37-9a15-1808fa3167c9/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:10:04,925 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ade15093-a170-4e37-9a15-1808fa3167c9/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 09:10:04,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ade15093-a170-4e37-9a15-1808fa3167c9/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-21 09:10:08,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:10:08,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 2947 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-21 09:10:08,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:10:08,617 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 48 proven. 1 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2022-11-21 09:10:08,618 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 09:10:09,653 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2022-11-21 09:10:09,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1664783598] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 09:10:09,653 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 09:10:09,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-11-21 09:10:09,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500550872] [2022-11-21 09:10:09,654 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 09:10:09,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-21 09:10:09,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:10:09,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-21 09:10:09,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2022-11-21 09:10:09,656 INFO L87 Difference]: Start difference. First operand 17660 states and 25555 transitions. Second operand has 17 states, 15 states have (on average 6.6) internal successors, (99), 13 states have internal predecessors, (99), 4 states have call successors, (43), 6 states have call predecessors, (43), 6 states have return successors, (29), 4 states have call predecessors, (29), 4 states have call successors, (29) [2022-11-21 09:10:11,708 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 09:10:13,777 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 09:10:36,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:10:36,155 INFO L93 Difference]: Finished difference Result 41789 states and 62177 transitions. [2022-11-21 09:10:36,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-21 09:10:36,156 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 6.6) internal successors, (99), 13 states have internal predecessors, (99), 4 states have call successors, (43), 6 states have call predecessors, (43), 6 states have return successors, (29), 4 states have call predecessors, (29), 4 states have call successors, (29) Word has length 197 [2022-11-21 09:10:36,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:10:36,338 INFO L225 Difference]: With dead ends: 41789 [2022-11-21 09:10:36,339 INFO L226 Difference]: Without dead ends: 24142 [2022-11-21 09:10:36,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 471 GetRequests, 444 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=141, Invalid=615, Unknown=0, NotChecked=0, Total=756 [2022-11-21 09:10:36,408 INFO L413 NwaCegarLoop]: 1251 mSDtfsCounter, 1984 mSDsluCounter, 7883 mSDsCounter, 0 mSdLazyCounter, 6019 mSolverCounterSat, 1833 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2064 SdHoareTripleChecker+Valid, 9134 SdHoareTripleChecker+Invalid, 7854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1833 IncrementalHoareTripleChecker+Valid, 6019 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.0s IncrementalHoareTripleChecker+Time [2022-11-21 09:10:36,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2064 Valid, 9134 Invalid, 7854 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1833 Valid, 6019 Invalid, 2 Unknown, 0 Unchecked, 24.0s Time] [2022-11-21 09:10:36,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24142 states. [2022-11-21 09:10:37,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24142 to 17666. [2022-11-21 09:10:37,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17666 states, 12155 states have (on average 1.360016454134101) internal successors, (16531), 12560 states have internal predecessors, (16531), 4525 states have call successors, (4525), 992 states have call predecessors, (4525), 985 states have return successors, (4506), 4449 states have call predecessors, (4506), 4505 states have call successors, (4506) [2022-11-21 09:10:38,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17666 states to 17666 states and 25562 transitions. [2022-11-21 09:10:38,053 INFO L78 Accepts]: Start accepts. Automaton has 17666 states and 25562 transitions. Word has length 197 [2022-11-21 09:10:38,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:10:38,060 INFO L495 AbstractCegarLoop]: Abstraction has 17666 states and 25562 transitions. [2022-11-21 09:10:38,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 6.6) internal successors, (99), 13 states have internal predecessors, (99), 4 states have call successors, (43), 6 states have call predecessors, (43), 6 states have return successors, (29), 4 states have call predecessors, (29), 4 states have call successors, (29) [2022-11-21 09:10:38,061 INFO L276 IsEmpty]: Start isEmpty. Operand 17666 states and 25562 transitions. [2022-11-21 09:10:38,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2022-11-21 09:10:38,076 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:10:38,077 INFO L195 NwaCegarLoop]: trace histogram [10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:10:38,127 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ade15093-a170-4e37-9a15-1808fa3167c9/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-21 09:10:38,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ade15093-a170-4e37-9a15-1808fa3167c9/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:10:38,292 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:10:38,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:10:38,293 INFO L85 PathProgramCache]: Analyzing trace with hash -2104343380, now seen corresponding path program 2 times [2022-11-21 09:10:38,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:10:38,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091394076] [2022-11-21 09:10:38,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:10:38,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:10:38,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:10:39,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 09:10:39,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:10:39,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:10:39,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:10:39,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 09:10:39,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:10:39,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-21 09:10:39,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:10:39,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:10:39,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:10:39,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 09:10:39,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:10:39,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-21 09:10:39,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:10:39,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:10:39,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:10:39,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 09:10:39,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:10:39,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-21 09:10:39,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:10:39,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:10:39,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:10:39,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 09:10:39,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:10:39,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-21 09:10:39,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:10:40,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:10:40,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:10:40,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 09:10:40,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:10:40,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-21 09:10:40,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:10:40,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:10:40,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:10:40,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 09:10:40,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:10:40,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-21 09:10:40,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:10:40,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:10:40,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:10:40,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-21 09:10:40,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:10:40,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:10:40,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:10:40,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-11-21 09:10:40,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:10:40,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:10:40,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:10:40,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-11-21 09:10:40,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:10:40,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:10:40,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:10:40,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-11-21 09:10:40,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:10:40,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:10:40,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:10:40,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-11-21 09:10:40,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:10:40,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-11-21 09:10:40,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:10:40,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:10:40,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:10:40,840 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 332 trivial. 0 not checked. [2022-11-21 09:10:40,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:10:40,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091394076] [2022-11-21 09:10:40,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091394076] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 09:10:40,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [302379194] [2022-11-21 09:10:40,844 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 09:10:40,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:10:40,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ade15093-a170-4e37-9a15-1808fa3167c9/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:10:40,846 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ade15093-a170-4e37-9a15-1808fa3167c9/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 09:10:40,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ade15093-a170-4e37-9a15-1808fa3167c9/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-21 09:10:44,555 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-21 09:10:44,555 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 09:10:44,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 2268 conjuncts, 54 conjunts are in the unsatisfiable core [2022-11-21 09:10:44,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:10:46,298 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 395 trivial. 0 not checked. [2022-11-21 09:10:46,298 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 09:10:46,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [302379194] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:10:46,299 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 09:10:46,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [12] total 23 [2022-11-21 09:10:46,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146316741] [2022-11-21 09:10:46,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:10:46,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-21 09:10:46,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:10:46,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-21 09:10:46,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=454, Unknown=0, NotChecked=0, Total=506 [2022-11-21 09:10:46,303 INFO L87 Difference]: Start difference. First operand 17666 states and 25562 transitions. Second operand has 13 states, 12 states have (on average 5.083333333333333) internal successors, (61), 10 states have internal predecessors, (61), 4 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-21 09:10:48,354 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 09:10:50,430 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 09:10:52,469 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 09:10:54,513 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 09:11:07,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:11:07,448 INFO L93 Difference]: Finished difference Result 51522 states and 75158 transitions. [2022-11-21 09:11:07,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-21 09:11:07,449 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 5.083333333333333) internal successors, (61), 10 states have internal predecessors, (61), 4 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) Word has length 202 [2022-11-21 09:11:07,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:11:07,786 INFO L225 Difference]: With dead ends: 51522 [2022-11-21 09:11:07,786 INFO L226 Difference]: Without dead ends: 33891 [2022-11-21 09:11:07,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=103, Invalid=889, Unknown=0, NotChecked=0, Total=992 [2022-11-21 09:11:07,850 INFO L413 NwaCegarLoop]: 2219 mSDtfsCounter, 2691 mSDsluCounter, 20310 mSDsCounter, 0 mSdLazyCounter, 3290 mSolverCounterSat, 239 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2764 SdHoareTripleChecker+Valid, 22529 SdHoareTripleChecker+Invalid, 3533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 239 IncrementalHoareTripleChecker+Valid, 3290 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.4s IncrementalHoareTripleChecker+Time [2022-11-21 09:11:07,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2764 Valid, 22529 Invalid, 3533 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [239 Valid, 3290 Invalid, 4 Unknown, 0 Unchecked, 18.4s Time] [2022-11-21 09:11:07,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33891 states. [2022-11-21 09:11:10,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33891 to 30698. [2022-11-21 09:11:10,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30698 states, 21113 states have (on average 1.3608677118363093) internal successors, (28732), 21825 states have internal predecessors, (28732), 7865 states have call successors, (7865), 1714 states have call predecessors, (7865), 1719 states have return successors, (7888), 7746 states have call predecessors, (7888), 7845 states have call successors, (7888) [2022-11-21 09:11:10,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30698 states to 30698 states and 44485 transitions. [2022-11-21 09:11:10,776 INFO L78 Accepts]: Start accepts. Automaton has 30698 states and 44485 transitions. Word has length 202 [2022-11-21 09:11:10,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:11:10,777 INFO L495 AbstractCegarLoop]: Abstraction has 30698 states and 44485 transitions. [2022-11-21 09:11:10,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 5.083333333333333) internal successors, (61), 10 states have internal predecessors, (61), 4 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-21 09:11:10,777 INFO L276 IsEmpty]: Start isEmpty. Operand 30698 states and 44485 transitions. [2022-11-21 09:11:10,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2022-11-21 09:11:10,784 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:11:10,785 INFO L195 NwaCegarLoop]: trace histogram [10, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:11:10,825 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ade15093-a170-4e37-9a15-1808fa3167c9/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-21 09:11:11,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ade15093-a170-4e37-9a15-1808fa3167c9/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-21 09:11:11,004 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:11:11,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:11:11,004 INFO L85 PathProgramCache]: Analyzing trace with hash -563942062, now seen corresponding path program 1 times [2022-11-21 09:11:11,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:11:11,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048156927] [2022-11-21 09:11:11,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:11:11,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:11:11,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:11:12,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 09:11:12,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:11:12,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:11:12,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:11:12,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 09:11:12,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:11:12,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-21 09:11:12,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:11:12,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:11:12,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:11:12,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 09:11:12,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:11:12,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-21 09:11:12,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:11:12,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:11:12,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:11:12,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 09:11:12,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:11:12,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-21 09:11:12,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:11:12,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:11:12,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:11:12,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 09:11:12,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:11:12,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-21 09:11:12,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:11:12,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:11:12,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:11:12,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 09:11:12,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:11:12,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-21 09:11:12,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:11:12,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:11:12,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:11:12,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 09:11:12,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:11:12,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-21 09:11:12,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:11:12,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:11:12,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:11:13,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-21 09:11:13,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:11:13,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:11:13,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:11:13,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-11-21 09:11:13,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:11:13,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:11:13,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:11:13,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-11-21 09:11:13,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:11:13,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:11:13,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:11:13,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-11-21 09:11:13,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:11:13,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:11:13,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:11:13,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-11-21 09:11:13,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:11:13,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 09:11:13,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:11:13,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 09:11:13,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:11:13,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:11:13,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:11:13,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-21 09:11:13,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:11:13,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-11-21 09:11:13,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:11:13,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:11:13,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:11:13,413 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2022-11-21 09:11:13,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:11:13,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048156927] [2022-11-21 09:11:13,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048156927] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 09:11:13,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1276054424] [2022-11-21 09:11:13,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:11:13,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:11:13,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ade15093-a170-4e37-9a15-1808fa3167c9/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:11:13,416 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ade15093-a170-4e37-9a15-1808fa3167c9/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 09:11:13,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ade15093-a170-4e37-9a15-1808fa3167c9/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-21 09:11:20,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:11:20,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 3091 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-21 09:11:20,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:11:21,351 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 116 proven. 3 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2022-11-21 09:11:21,351 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 09:11:22,648 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2022-11-21 09:11:22,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1276054424] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 09:11:22,649 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 09:11:22,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 8] total 20 [2022-11-21 09:11:22,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765089567] [2022-11-21 09:11:22,649 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 09:11:22,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-21 09:11:22,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:11:22,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-21 09:11:22,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2022-11-21 09:11:22,652 INFO L87 Difference]: Start difference. First operand 30698 states and 44485 transitions. Second operand has 20 states, 18 states have (on average 6.055555555555555) internal successors, (109), 16 states have internal predecessors, (109), 4 states have call successors, (49), 6 states have call predecessors, (49), 6 states have return successors, (35), 4 states have call predecessors, (35), 4 states have call successors, (35) [2022-11-21 09:11:24,705 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 09:11:26,802 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 09:11:50,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:11:50,972 INFO L93 Difference]: Finished difference Result 72778 states and 108426 transitions. [2022-11-21 09:11:50,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-21 09:11:50,973 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 6.055555555555555) internal successors, (109), 16 states have internal predecessors, (109), 4 states have call successors, (49), 6 states have call predecessors, (49), 6 states have return successors, (35), 4 states have call predecessors, (35), 4 states have call successors, (35) Word has length 223 [2022-11-21 09:11:50,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:11:51,476 INFO L225 Difference]: With dead ends: 72778 [2022-11-21 09:11:51,492 INFO L226 Difference]: Without dead ends: 42090 [2022-11-21 09:11:51,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 535 GetRequests, 501 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=181, Invalid=941, Unknown=0, NotChecked=0, Total=1122 [2022-11-21 09:11:51,597 INFO L413 NwaCegarLoop]: 1252 mSDtfsCounter, 1990 mSDsluCounter, 7884 mSDsCounter, 0 mSdLazyCounter, 6101 mSolverCounterSat, 1834 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2071 SdHoareTripleChecker+Valid, 9136 SdHoareTripleChecker+Invalid, 7937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1834 IncrementalHoareTripleChecker+Valid, 6101 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.6s IncrementalHoareTripleChecker+Time [2022-11-21 09:11:51,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2071 Valid, 9136 Invalid, 7937 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1834 Valid, 6101 Invalid, 2 Unknown, 0 Unchecked, 24.6s Time] [2022-11-21 09:11:51,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42090 states. [2022-11-21 09:11:53,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42090 to 30699. [2022-11-21 09:11:53,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30699 states, 21114 states have (on average 1.3608979823813583) internal successors, (28734), 21826 states have internal predecessors, (28734), 7865 states have call successors, (7865), 1714 states have call predecessors, (7865), 1719 states have return successors, (7888), 7746 states have call predecessors, (7888), 7845 states have call successors, (7888) [2022-11-21 09:11:54,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30699 states to 30699 states and 44487 transitions. [2022-11-21 09:11:54,039 INFO L78 Accepts]: Start accepts. Automaton has 30699 states and 44487 transitions. Word has length 223 [2022-11-21 09:11:54,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:11:54,044 INFO L495 AbstractCegarLoop]: Abstraction has 30699 states and 44487 transitions. [2022-11-21 09:11:54,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 6.055555555555555) internal successors, (109), 16 states have internal predecessors, (109), 4 states have call successors, (49), 6 states have call predecessors, (49), 6 states have return successors, (35), 4 states have call predecessors, (35), 4 states have call successors, (35) [2022-11-21 09:11:54,044 INFO L276 IsEmpty]: Start isEmpty. Operand 30699 states and 44487 transitions. [2022-11-21 09:11:54,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2022-11-21 09:11:54,052 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:11:54,052 INFO L195 NwaCegarLoop]: trace histogram [15, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:11:54,116 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ade15093-a170-4e37-9a15-1808fa3167c9/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-21 09:11:54,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ade15093-a170-4e37-9a15-1808fa3167c9/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-21 09:11:54,268 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:11:54,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:11:54,269 INFO L85 PathProgramCache]: Analyzing trace with hash -210753559, now seen corresponding path program 2 times [2022-11-21 09:11:54,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:11:54,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206300052] [2022-11-21 09:11:54,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:11:54,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:11:54,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:11:56,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 09:11:56,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:11:56,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:11:56,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:11:56,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 09:11:56,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:11:56,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-21 09:11:56,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:11:56,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:11:56,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:11:56,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 09:11:56,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:11:56,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-21 09:11:56,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:11:56,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:11:56,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:11:56,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 09:11:56,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:11:56,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-21 09:11:56,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:11:56,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:11:56,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:11:56,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 09:11:56,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:11:56,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-21 09:11:56,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:11:56,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:11:56,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:11:56,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 09:11:56,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:11:56,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-21 09:11:56,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:11:56,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:11:56,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:11:56,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 09:11:56,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:11:56,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-21 09:11:56,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:11:56,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:11:56,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:11:56,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-21 09:11:56,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:11:56,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:11:56,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:11:56,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-21 09:11:56,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:11:56,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:11:56,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:11:56,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-11-21 09:11:56,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:11:57,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:11:57,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:11:57,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-11-21 09:11:57,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:11:57,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:11:57,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:11:57,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-11-21 09:11:57,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:11:57,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 09:11:57,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:11:57,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 09:11:57,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:11:57,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:11:57,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:11:57,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-21 09:11:57,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:11:57,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-11-21 09:11:57,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:11:57,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:11:57,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:11:57,183 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 446 trivial. 0 not checked. [2022-11-21 09:11:57,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:11:57,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206300052] [2022-11-21 09:11:57,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206300052] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 09:11:57,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1447948726] [2022-11-21 09:11:57,184 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 09:11:57,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:11:57,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ade15093-a170-4e37-9a15-1808fa3167c9/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:11:57,186 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ade15093-a170-4e37-9a15-1808fa3167c9/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 09:11:57,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ade15093-a170-4e37-9a15-1808fa3167c9/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-21 09:14:35,111 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-21 09:14:35,111 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 09:14:35,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 2150 conjuncts, 42 conjunts are in the unsatisfiable core [2022-11-21 09:14:35,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:14:36,476 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 532 trivial. 0 not checked. [2022-11-21 09:14:36,476 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 09:14:36,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1447948726] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:14:36,477 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 09:14:36,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [13] total 22 [2022-11-21 09:14:36,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815048823] [2022-11-21 09:14:36,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:14:36,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-21 09:14:36,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:14:36,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-21 09:14:36,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=411, Unknown=0, NotChecked=0, Total=462 [2022-11-21 09:14:36,480 INFO L87 Difference]: Start difference. First operand 30699 states and 44487 transitions. Second operand has 11 states, 10 states have (on average 6.8) internal successors, (68), 9 states have internal predecessors, (68), 4 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-11-21 09:14:38,521 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 09:14:40,587 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 09:14:42,604 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 09:14:44,638 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 09:14:57,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:14:57,431 INFO L93 Difference]: Finished difference Result 77510 states and 112878 transitions. [2022-11-21 09:14:57,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 09:14:57,432 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 6.8) internal successors, (68), 9 states have internal predecessors, (68), 4 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 228 [2022-11-21 09:14:57,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:14:57,712 INFO L225 Difference]: With dead ends: 77510 [2022-11-21 09:14:57,713 INFO L226 Difference]: Without dead ends: 46846 [2022-11-21 09:14:57,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=94, Invalid=718, Unknown=0, NotChecked=0, Total=812 [2022-11-21 09:14:57,832 INFO L413 NwaCegarLoop]: 2195 mSDtfsCounter, 2695 mSDsluCounter, 16516 mSDsCounter, 0 mSdLazyCounter, 3047 mSolverCounterSat, 250 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2765 SdHoareTripleChecker+Valid, 18711 SdHoareTripleChecker+Invalid, 3301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 250 IncrementalHoareTripleChecker+Valid, 3047 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.2s IncrementalHoareTripleChecker+Time [2022-11-21 09:14:57,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2765 Valid, 18711 Invalid, 3301 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [250 Valid, 3047 Invalid, 4 Unknown, 0 Unchecked, 17.2s Time] [2022-11-21 09:14:57,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46846 states. [2022-11-21 09:15:00,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46846 to 36187. [2022-11-21 09:15:00,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36187 states, 24888 states have (on average 1.3608164577306332) internal successors, (33868), 25729 states have internal predecessors, (33868), 9270 states have call successors, (9270), 2023 states have call predecessors, (9270), 2028 states have return successors, (9299), 9127 states have call predecessors, (9299), 9250 states have call successors, (9299) [2022-11-21 09:15:00,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36187 states to 36187 states and 52437 transitions. [2022-11-21 09:15:00,874 INFO L78 Accepts]: Start accepts. Automaton has 36187 states and 52437 transitions. Word has length 228 [2022-11-21 09:15:00,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:15:00,875 INFO L495 AbstractCegarLoop]: Abstraction has 36187 states and 52437 transitions. [2022-11-21 09:15:00,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 6.8) internal successors, (68), 9 states have internal predecessors, (68), 4 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-11-21 09:15:00,876 INFO L276 IsEmpty]: Start isEmpty. Operand 36187 states and 52437 transitions. [2022-11-21 09:15:00,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2022-11-21 09:15:00,883 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:15:00,884 INFO L195 NwaCegarLoop]: trace histogram [15, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:15:00,952 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ade15093-a170-4e37-9a15-1808fa3167c9/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-21 09:15:01,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ade15093-a170-4e37-9a15-1808fa3167c9/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:15:01,113 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:15:01,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:15:01,113 INFO L85 PathProgramCache]: Analyzing trace with hash -833549467, now seen corresponding path program 1 times [2022-11-21 09:15:01,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:15:01,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184380961] [2022-11-21 09:15:01,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:15:01,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:15:01,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:01,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 09:15:01,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:01,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:15:01,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:01,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 09:15:01,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:01,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-21 09:15:01,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:01,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:15:01,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:01,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 09:15:01,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:01,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-21 09:15:01,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:01,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:15:01,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:01,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 09:15:01,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:01,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-21 09:15:01,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:01,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:15:01,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:01,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 09:15:01,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:01,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-21 09:15:01,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:01,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:15:01,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:01,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 09:15:01,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:01,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-21 09:15:01,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:01,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:15:01,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:01,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 09:15:01,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:01,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-21 09:15:01,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:01,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:15:01,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:02,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-21 09:15:02,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:02,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:15:02,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:02,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-21 09:15:02,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:02,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:15:02,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:02,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-11-21 09:15:02,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:02,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:15:02,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:02,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-11-21 09:15:02,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:02,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:15:02,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:02,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-11-21 09:15:02,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:02,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-11-21 09:15:02,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:02,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:15:02,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:02,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-11-21 09:15:02,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:02,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:15:02,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:02,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2022-11-21 09:15:02,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:02,190 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2022-11-21 09:15:02,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:15:02,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184380961] [2022-11-21 09:15:02,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184380961] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:15:02,191 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:15:02,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 09:15:02,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537681407] [2022-11-21 09:15:02,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:15:02,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 09:15:02,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:15:02,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 09:15:02,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-21 09:15:02,193 INFO L87 Difference]: Start difference. First operand 36187 states and 52437 transitions. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (22), 7 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-21 09:15:04,243 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 09:15:06,289 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 09:15:08,336 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 [] [2022-11-21 09:15:33,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:15:33,895 INFO L93 Difference]: Finished difference Result 85579 states and 127456 transitions. [2022-11-21 09:15:33,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 09:15:33,901 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (22), 7 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 226 [2022-11-21 09:15:33,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:15:34,277 INFO L225 Difference]: With dead ends: 85579 [2022-11-21 09:15:34,278 INFO L226 Difference]: Without dead ends: 49427 [2022-11-21 09:15:34,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-21 09:15:34,447 INFO L413 NwaCegarLoop]: 2390 mSDtfsCounter, 2908 mSDsluCounter, 6182 mSDsCounter, 0 mSdLazyCounter, 5969 mSolverCounterSat, 1519 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3192 SdHoareTripleChecker+Valid, 8572 SdHoareTripleChecker+Invalid, 7491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1519 IncrementalHoareTripleChecker+Valid, 5969 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.5s IncrementalHoareTripleChecker+Time [2022-11-21 09:15:34,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3192 Valid, 8572 Invalid, 7491 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1519 Valid, 5969 Invalid, 3 Unknown, 0 Unchecked, 27.5s Time] [2022-11-21 09:15:34,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49427 states. [2022-11-21 09:15:37,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49427 to 36168. [2022-11-21 09:15:37,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36168 states, 24869 states have (on average 1.3603683300494591) internal successors, (33831), 25712 states have internal predecessors, (33831), 9270 states have call successors, (9270), 2023 states have call predecessors, (9270), 2028 states have return successors, (9299), 9125 states have call predecessors, (9299), 9250 states have call successors, (9299) [2022-11-21 09:15:37,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36168 states to 36168 states and 52400 transitions. [2022-11-21 09:15:37,662 INFO L78 Accepts]: Start accepts. Automaton has 36168 states and 52400 transitions. Word has length 226 [2022-11-21 09:15:37,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:15:37,663 INFO L495 AbstractCegarLoop]: Abstraction has 36168 states and 52400 transitions. [2022-11-21 09:15:37,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (22), 7 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-21 09:15:37,664 INFO L276 IsEmpty]: Start isEmpty. Operand 36168 states and 52400 transitions. [2022-11-21 09:15:37,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2022-11-21 09:15:37,671 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:15:37,672 INFO L195 NwaCegarLoop]: trace histogram [15, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:15:37,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-21 09:15:37,672 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:15:37,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:15:37,673 INFO L85 PathProgramCache]: Analyzing trace with hash -417714209, now seen corresponding path program 1 times [2022-11-21 09:15:37,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:15:37,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269659969] [2022-11-21 09:15:37,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:15:37,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:15:37,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:39,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 09:15:39,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:39,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:15:39,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:39,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 09:15:39,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:39,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-21 09:15:39,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:39,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:15:39,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:39,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 09:15:39,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:39,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-21 09:15:39,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:39,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:15:39,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:39,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 09:15:39,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:39,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-21 09:15:39,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:39,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:15:39,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:39,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 09:15:39,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:39,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-21 09:15:39,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:39,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:15:39,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:39,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 09:15:39,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:39,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-21 09:15:39,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:39,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:15:39,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:39,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 09:15:39,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:39,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-21 09:15:39,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:39,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:15:39,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:39,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-21 09:15:39,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:39,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:15:39,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:39,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-21 09:15:39,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:39,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:15:39,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:39,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-11-21 09:15:39,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:39,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:15:39,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:39,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-11-21 09:15:39,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:39,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:15:39,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:39,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-11-21 09:15:39,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:39,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 09:15:39,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:39,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 09:15:39,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:40,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:15:40,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:40,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-21 09:15:40,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:40,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-11-21 09:15:40,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:40,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:15:40,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:40,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-11-21 09:15:40,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:40,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:15:40,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:40,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-11-21 09:15:40,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:40,167 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 446 trivial. 0 not checked. [2022-11-21 09:15:40,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:15:40,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269659969] [2022-11-21 09:15:40,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269659969] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 09:15:40,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [338114676] [2022-11-21 09:15:40,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:15:40,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:15:40,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ade15093-a170-4e37-9a15-1808fa3167c9/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:15:40,170 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ade15093-a170-4e37-9a15-1808fa3167c9/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 09:15:40,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ade15093-a170-4e37-9a15-1808fa3167c9/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-21 09:15:57,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:15:57,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 3250 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-21 09:15:57,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:15:58,034 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 144 proven. 6 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2022-11-21 09:15:58,034 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 09:15:59,330 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 446 trivial. 0 not checked. [2022-11-21 09:15:59,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [338114676] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 09:15:59,330 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 09:15:59,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 23 [2022-11-21 09:15:59,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568179705] [2022-11-21 09:15:59,331 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 09:15:59,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-21 09:15:59,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:15:59,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-21 09:15:59,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=438, Unknown=0, NotChecked=0, Total=506 [2022-11-21 09:15:59,334 INFO L87 Difference]: Start difference. First operand 36168 states and 52400 transitions. Second operand has 23 states, 21 states have (on average 6.190476190476191) internal successors, (130), 19 states have internal predecessors, (130), 4 states have call successors, (56), 6 states have call predecessors, (56), 6 states have return successors, (41), 4 states have call predecessors, (41), 4 states have call successors, (41) [2022-11-21 09:16:01,379 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 [] [2022-11-21 09:16:39,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:16:39,240 INFO L93 Difference]: Finished difference Result 85852 states and 127898 transitions. [2022-11-21 09:16:39,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-21 09:16:39,241 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 6.190476190476191) internal successors, (130), 19 states have internal predecessors, (130), 4 states have call successors, (56), 6 states have call predecessors, (56), 6 states have return successors, (41), 4 states have call predecessors, (41), 4 states have call successors, (41) Word has length 244 [2022-11-21 09:16:39,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:16:39,472 INFO L225 Difference]: With dead ends: 85852 [2022-11-21 09:16:39,472 INFO L226 Difference]: Without dead ends: 49694 [2022-11-21 09:16:39,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 586 GetRequests, 547 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=216, Invalid=1266, Unknown=0, NotChecked=0, Total=1482 [2022-11-21 09:16:39,552 INFO L413 NwaCegarLoop]: 1250 mSDtfsCounter, 1630 mSDsluCounter, 14368 mSDsCounter, 0 mSdLazyCounter, 10845 mSolverCounterSat, 1435 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1712 SdHoareTripleChecker+Valid, 15618 SdHoareTripleChecker+Invalid, 12281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1435 IncrementalHoareTripleChecker+Valid, 10845 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.9s IncrementalHoareTripleChecker+Time [2022-11-21 09:16:39,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1712 Valid, 15618 Invalid, 12281 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1435 Valid, 10845 Invalid, 1 Unknown, 0 Unchecked, 33.9s Time] [2022-11-21 09:16:39,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49694 states. [2022-11-21 09:16:42,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49694 to 36169. [2022-11-21 09:16:42,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36169 states, 24870 states have (on average 1.3603940490550865) internal successors, (33833), 25713 states have internal predecessors, (33833), 9270 states have call successors, (9270), 2023 states have call predecessors, (9270), 2028 states have return successors, (9299), 9125 states have call predecessors, (9299), 9250 states have call successors, (9299) [2022-11-21 09:16:42,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36169 states to 36169 states and 52402 transitions. [2022-11-21 09:16:42,218 INFO L78 Accepts]: Start accepts. Automaton has 36169 states and 52402 transitions. Word has length 244 [2022-11-21 09:16:42,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:16:42,219 INFO L495 AbstractCegarLoop]: Abstraction has 36169 states and 52402 transitions. [2022-11-21 09:16:42,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 6.190476190476191) internal successors, (130), 19 states have internal predecessors, (130), 4 states have call successors, (56), 6 states have call predecessors, (56), 6 states have return successors, (41), 4 states have call predecessors, (41), 4 states have call successors, (41) [2022-11-21 09:16:42,219 INFO L276 IsEmpty]: Start isEmpty. Operand 36169 states and 52402 transitions. [2022-11-21 09:16:42,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2022-11-21 09:16:42,227 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:16:42,227 INFO L195 NwaCegarLoop]: trace histogram [20, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:16:42,305 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ade15093-a170-4e37-9a15-1808fa3167c9/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-21 09:16:42,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ade15093-a170-4e37-9a15-1808fa3167c9/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-21 09:16:42,444 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:16:42,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:16:42,445 INFO L85 PathProgramCache]: Analyzing trace with hash 2003563688, now seen corresponding path program 2 times [2022-11-21 09:16:42,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:16:42,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323447596] [2022-11-21 09:16:42,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:16:42,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:16:42,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:16:43,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 09:16:43,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:16:43,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:16:43,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:16:43,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 09:16:43,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:16:43,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-21 09:16:43,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:16:43,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:16:43,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:16:43,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 09:16:43,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:16:43,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-21 09:16:43,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:16:43,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:16:43,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:16:43,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 09:16:43,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:16:43,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-21 09:16:43,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:16:43,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:16:43,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:16:43,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 09:16:43,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:16:43,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-21 09:16:43,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:16:43,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:16:43,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:16:43,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 09:16:43,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:16:43,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-21 09:16:43,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:16:43,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:16:43,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:16:43,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 09:16:43,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:16:43,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-21 09:16:43,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:16:43,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:16:43,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:16:44,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-21 09:16:44,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:16:44,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:16:44,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:16:44,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-11-21 09:16:44,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:16:44,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:16:44,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:16:44,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-11-21 09:16:44,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:16:44,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:16:44,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:16:44,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-11-21 09:16:44,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:16:44,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:16:44,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:16:44,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-11-21 09:16:44,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:16:44,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 09:16:44,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:16:44,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 09:16:44,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:16:44,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:16:44,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:16:44,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-21 09:16:44,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:16:44,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-11-21 09:16:44,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:16:44,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:16:44,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:16:44,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-11-21 09:16:44,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:16:44,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:16:44,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:16:44,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-11-21 09:16:44,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:16:44,729 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 134 refuted. 0 times theorem prover too weak. 516 trivial. 0 not checked. [2022-11-21 09:16:44,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:16:44,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323447596] [2022-11-21 09:16:44,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323447596] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 09:16:44,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157370121] [2022-11-21 09:16:44,730 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 09:16:44,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:16:44,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ade15093-a170-4e37-9a15-1808fa3167c9/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:16:44,733 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ade15093-a170-4e37-9a15-1808fa3167c9/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 09:16:44,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ade15093-a170-4e37-9a15-1808fa3167c9/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-21 09:19:40,149 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-21 09:19:40,150 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 09:19:40,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 2234 conjuncts, 43 conjunts are in the unsatisfiable core [2022-11-21 09:19:40,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:19:41,458 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 642 trivial. 0 not checked. [2022-11-21 09:19:41,458 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 09:19:41,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [157370121] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:19:41,459 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 09:19:41,459 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [14] total 23 [2022-11-21 09:19:41,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204867161] [2022-11-21 09:19:41,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:19:41,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-21 09:19:41,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:19:41,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-21 09:19:41,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=456, Unknown=0, NotChecked=0, Total=506 [2022-11-21 09:19:41,461 INFO L87 Difference]: Start difference. First operand 36169 states and 52402 transitions. Second operand has 11 states, 10 states have (on average 7.7) internal successors, (77), 9 states have internal predecessors, (77), 4 states have call successors, (26), 3 states have call predecessors, (26), 4 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2022-11-21 09:19:43,492 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 09:19:45,560 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 09:19:56,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:19:56,180 INFO L93 Difference]: Finished difference Result 67802 states and 98243 transitions. [2022-11-21 09:19:56,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-21 09:19:56,181 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 7.7) internal successors, (77), 9 states have internal predecessors, (77), 4 states have call successors, (26), 3 states have call predecessors, (26), 4 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) Word has length 249 [2022-11-21 09:19:56,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:19:56,303 INFO L225 Difference]: With dead ends: 67802 [2022-11-21 09:19:56,303 INFO L226 Difference]: Without dead ends: 31668 [2022-11-21 09:19:56,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 312 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=93, Invalid=777, Unknown=0, NotChecked=0, Total=870 [2022-11-21 09:19:56,507 INFO L413 NwaCegarLoop]: 3267 mSDtfsCounter, 2138 mSDsluCounter, 21742 mSDsCounter, 0 mSdLazyCounter, 2542 mSolverCounterSat, 243 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2141 SdHoareTripleChecker+Valid, 25009 SdHoareTripleChecker+Invalid, 2787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 243 IncrementalHoareTripleChecker+Valid, 2542 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time [2022-11-21 09:19:56,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2141 Valid, 25009 Invalid, 2787 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [243 Valid, 2542 Invalid, 2 Unknown, 0 Unchecked, 11.4s Time] [2022-11-21 09:19:56,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31668 states. [2022-11-21 09:19:58,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31668 to 31532. [2022-11-21 09:19:58,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31532 states, 21661 states have (on average 1.3613868242463414) internal successors, (29489), 22397 states have internal predecessors, (29489), 8107 states have call successors, (8107), 1757 states have call predecessors, (8107), 1763 states have return successors, (8138), 7986 states have call predecessors, (8138), 8095 states have call successors, (8138) [2022-11-21 09:19:58,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31532 states to 31532 states and 45734 transitions. [2022-11-21 09:19:58,785 INFO L78 Accepts]: Start accepts. Automaton has 31532 states and 45734 transitions. Word has length 249 [2022-11-21 09:19:58,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:19:58,785 INFO L495 AbstractCegarLoop]: Abstraction has 31532 states and 45734 transitions. [2022-11-21 09:19:58,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 7.7) internal successors, (77), 9 states have internal predecessors, (77), 4 states have call successors, (26), 3 states have call predecessors, (26), 4 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2022-11-21 09:19:58,786 INFO L276 IsEmpty]: Start isEmpty. Operand 31532 states and 45734 transitions. [2022-11-21 09:19:58,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2022-11-21 09:19:58,792 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:19:58,792 INFO L195 NwaCegarLoop]: trace histogram [20, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:19:58,852 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ade15093-a170-4e37-9a15-1808fa3167c9/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-21 09:19:59,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ade15093-a170-4e37-9a15-1808fa3167c9/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:19:59,020 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:19:59,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:19:59,021 INFO L85 PathProgramCache]: Analyzing trace with hash 2043884944, now seen corresponding path program 1 times [2022-11-21 09:19:59,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:19:59,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851077250] [2022-11-21 09:19:59,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:19:59,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:19:59,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:19:59,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 09:19:59,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:19:59,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:19:59,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:19:59,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 09:19:59,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:19:59,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-21 09:19:59,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:19:59,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:19:59,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:19:59,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 09:19:59,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:19:59,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-21 09:19:59,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:19:59,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:19:59,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:19:59,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 09:19:59,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:19:59,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-21 09:19:59,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:19:59,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:19:59,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:19:59,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 09:19:59,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:19:59,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-21 09:19:59,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:19:59,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:19:59,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:19:59,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 09:19:59,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:19:59,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-21 09:19:59,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:19:59,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:19:59,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:19:59,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 09:19:59,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:19:59,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-21 09:19:59,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:19:59,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:19:59,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:19:59,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-21 09:19:59,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:19:59,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:19:59,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:19:59,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-11-21 09:19:59,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:19:59,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:19:59,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:19:59,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-11-21 09:20:00,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:20:00,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:20:00,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:20:00,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-11-21 09:20:00,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:20:00,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:20:00,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:20:00,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-11-21 09:20:00,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:20:00,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-11-21 09:20:00,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:20:00,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:20:00,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:20:00,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-11-21 09:20:00,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:20:00,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:20:00,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:20:00,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2022-11-21 09:20:00,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:20:00,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-11-21 09:20:00,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:20:00,160 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2022-11-21 09:20:00,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:20:00,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851077250] [2022-11-21 09:20:00,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851077250] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:20:00,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:20:00,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-21 09:20:00,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428675244] [2022-11-21 09:20:00,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:20:00,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-21 09:20:00,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:20:00,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-21 09:20:00,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-21 09:20:00,162 INFO L87 Difference]: Start difference. First operand 31532 states and 45734 transitions. Second operand has 11 states, 11 states have (on average 7.636363636363637) internal successors, (84), 6 states have internal predecessors, (84), 2 states have call successors, (22), 7 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-21 09:20:02,205 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 09:20:04,220 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 09:20:06,265 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 [] [2022-11-21 09:20:42,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:20:42,700 INFO L93 Difference]: Finished difference Result 69666 states and 103864 transitions. [2022-11-21 09:20:42,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-21 09:20:42,700 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.636363636363637) internal successors, (84), 6 states have internal predecessors, (84), 2 states have call successors, (22), 7 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 243 [2022-11-21 09:20:42,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:20:42,851 INFO L225 Difference]: With dead ends: 69666 [2022-11-21 09:20:42,851 INFO L226 Difference]: Without dead ends: 38169 [2022-11-21 09:20:42,931 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2022-11-21 09:20:42,932 INFO L413 NwaCegarLoop]: 895 mSDtfsCounter, 4255 mSDsluCounter, 4025 mSDsCounter, 0 mSdLazyCounter, 11766 mSolverCounterSat, 2565 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4495 SdHoareTripleChecker+Valid, 4920 SdHoareTripleChecker+Invalid, 14334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 2565 IncrementalHoareTripleChecker+Valid, 11766 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.2s IncrementalHoareTripleChecker+Time [2022-11-21 09:20:42,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4495 Valid, 4920 Invalid, 14334 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [2565 Valid, 11766 Invalid, 3 Unknown, 0 Unchecked, 38.2s Time] [2022-11-21 09:20:42,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38169 states. [2022-11-21 09:20:45,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38169 to 25056. [2022-11-21 09:20:45,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25056 states, 17212 states have (on average 1.3607947943295375) internal successors, (23422), 17794 states have internal predecessors, (23422), 6437 states have call successors, (6437), 1403 states have call predecessors, (6437), 1406 states have return successors, (6461), 6341 states have call predecessors, (6461), 6427 states have call successors, (6461) [2022-11-21 09:20:45,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25056 states to 25056 states and 36320 transitions. [2022-11-21 09:20:45,420 INFO L78 Accepts]: Start accepts. Automaton has 25056 states and 36320 transitions. Word has length 243 [2022-11-21 09:20:45,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:20:45,421 INFO L495 AbstractCegarLoop]: Abstraction has 25056 states and 36320 transitions. [2022-11-21 09:20:45,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.636363636363637) internal successors, (84), 6 states have internal predecessors, (84), 2 states have call successors, (22), 7 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-21 09:20:45,421 INFO L276 IsEmpty]: Start isEmpty. Operand 25056 states and 36320 transitions. [2022-11-21 09:20:45,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2022-11-21 09:20:45,428 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:20:45,429 INFO L195 NwaCegarLoop]: trace histogram [20, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:20:45,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-21 09:20:45,429 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:20:45,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:20:45,430 INFO L85 PathProgramCache]: Analyzing trace with hash 423153460, now seen corresponding path program 1 times [2022-11-21 09:20:45,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:20:45,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811896399] [2022-11-21 09:20:45,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:20:45,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:20:45,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:20:46,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 09:20:46,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:20:46,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:20:46,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:20:46,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 09:20:46,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:20:46,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-21 09:20:46,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:20:46,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:20:46,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:20:46,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 09:20:46,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:20:46,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-21 09:20:46,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:20:46,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:20:46,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:20:46,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 09:20:46,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:20:46,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-21 09:20:46,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:20:46,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:20:46,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:20:46,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 09:20:46,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:20:46,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-21 09:20:46,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:20:46,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:20:46,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:20:46,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 09:20:46,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:20:46,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-21 09:20:46,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:20:46,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:20:46,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:20:46,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 09:20:46,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:20:46,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-21 09:20:46,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:20:46,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:20:46,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:20:47,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-21 09:20:47,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:20:47,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:20:47,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:20:47,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-11-21 09:20:47,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:20:47,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:20:47,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:20:47,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-11-21 09:20:47,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:20:47,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:20:47,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:20:47,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-11-21 09:20:47,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:20:47,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:20:47,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:20:47,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-11-21 09:20:47,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:20:47,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-11-21 09:20:47,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:20:47,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:20:47,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:20:47,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-11-21 09:20:47,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:20:47,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:20:47,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:20:47,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-11-21 09:20:47,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:20:47,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:20:47,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:20:47,720 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 0 proven. 134 refuted. 0 times theorem prover too weak. 466 trivial. 0 not checked. [2022-11-21 09:20:47,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:20:47,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811896399] [2022-11-21 09:20:47,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811896399] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 09:20:47,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [711207910] [2022-11-21 09:20:47,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:20:47,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:20:47,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ade15093-a170-4e37-9a15-1808fa3167c9/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:20:47,725 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ade15093-a170-4e37-9a15-1808fa3167c9/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 09:20:47,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ade15093-a170-4e37-9a15-1808fa3167c9/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-21 09:20:49,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:20:49,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 3317 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-21 09:20:49,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:20:49,904 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2022-11-21 09:20:49,905 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 09:20:49,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [711207910] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:20:49,905 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 09:20:49,905 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [14] total 18 [2022-11-21 09:20:49,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923521357] [2022-11-21 09:20:49,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:20:49,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 09:20:49,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:20:49,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 09:20:49,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2022-11-21 09:20:49,907 INFO L87 Difference]: Start difference. First operand 25056 states and 36320 transitions. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-21 09:20:52,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:20:52,203 INFO L93 Difference]: Finished difference Result 26205 states and 38138 transitions. [2022-11-21 09:20:52,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 09:20:52,204 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 247 [2022-11-21 09:20:52,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:20:52,257 INFO L225 Difference]: With dead ends: 26205 [2022-11-21 09:20:52,257 INFO L226 Difference]: Without dead ends: 15346 [2022-11-21 09:20:52,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 311 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2022-11-21 09:20:52,284 INFO L413 NwaCegarLoop]: 2122 mSDtfsCounter, 1464 mSDsluCounter, 7913 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 407 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1524 SdHoareTripleChecker+Valid, 10035 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 407 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-21 09:20:52,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1524 Valid, 10035 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [407 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-21 09:20:52,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15346 states. [2022-11-21 09:20:53,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15346 to 14265. [2022-11-21 09:20:53,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14265 states, 9802 states have (on average 1.3582942256682309) internal successors, (13314), 10131 states have internal predecessors, (13314), 3654 states have call successors, (3654), 806 states have call predecessors, (3654), 808 states have return successors, (3665), 3600 states have call predecessors, (3665), 3646 states have call successors, (3665) [2022-11-21 09:20:53,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14265 states to 14265 states and 20633 transitions. [2022-11-21 09:20:53,466 INFO L78 Accepts]: Start accepts. Automaton has 14265 states and 20633 transitions. Word has length 247 [2022-11-21 09:20:53,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:20:53,466 INFO L495 AbstractCegarLoop]: Abstraction has 14265 states and 20633 transitions. [2022-11-21 09:20:53,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-21 09:20:53,466 INFO L276 IsEmpty]: Start isEmpty. Operand 14265 states and 20633 transitions. [2022-11-21 09:20:53,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2022-11-21 09:20:53,473 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:20:53,473 INFO L195 NwaCegarLoop]: trace histogram [20, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:20:53,490 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ade15093-a170-4e37-9a15-1808fa3167c9/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-21 09:20:53,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ade15093-a170-4e37-9a15-1808fa3167c9/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-21 09:20:53,688 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:20:53,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:20:53,688 INFO L85 PathProgramCache]: Analyzing trace with hash 654059965, now seen corresponding path program 1 times [2022-11-21 09:20:53,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:20:53,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135991408] [2022-11-21 09:20:53,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:20:53,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:20:53,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:20:55,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 09:20:55,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:20:55,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:20:55,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:20:55,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 09:20:55,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:20:55,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-21 09:20:55,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:20:55,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:20:55,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:20:55,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 09:20:55,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:20:55,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-21 09:20:55,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:20:55,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:20:55,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:20:55,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 09:20:55,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:20:55,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-21 09:20:55,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:20:55,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:20:55,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:20:55,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 09:20:55,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:20:55,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-21 09:20:55,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:20:55,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:20:55,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:20:55,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 09:20:55,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:20:55,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-21 09:20:55,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:20:55,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:20:55,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:20:55,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 09:20:55,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:20:55,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-21 09:20:55,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:20:55,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:20:55,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:20:55,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-21 09:20:55,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:20:55,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:20:55,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:20:55,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-11-21 09:20:55,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:20:55,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:20:55,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:20:55,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-11-21 09:20:55,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:20:55,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:20:55,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:20:55,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-11-21 09:20:55,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:20:55,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:20:55,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:20:56,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-11-21 09:20:56,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:20:56,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-11-21 09:20:56,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:20:56,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:20:56,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:20:56,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-11-21 09:20:56,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:20:56,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:20:56,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:20:56,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-11-21 09:20:56,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:20:56,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:20:56,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:20:56,042 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 0 proven. 134 refuted. 0 times theorem prover too weak. 466 trivial. 0 not checked. [2022-11-21 09:20:56,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:20:56,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135991408] [2022-11-21 09:20:56,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135991408] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 09:20:56,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2141062974] [2022-11-21 09:20:56,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:20:56,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:20:56,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ade15093-a170-4e37-9a15-1808fa3167c9/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:20:56,049 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ade15093-a170-4e37-9a15-1808fa3167c9/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 09:20:56,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ade15093-a170-4e37-9a15-1808fa3167c9/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-21 09:20:57,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:20:57,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 3324 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-21 09:20:57,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:20:58,276 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 600 trivial. 0 not checked. [2022-11-21 09:20:58,276 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 09:20:58,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2141062974] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:20:58,277 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 09:20:58,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [14] total 18 [2022-11-21 09:20:58,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243444516] [2022-11-21 09:20:58,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:20:58,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 09:20:58,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:20:58,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 09:20:58,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2022-11-21 09:20:58,279 INFO L87 Difference]: Start difference. First operand 14265 states and 20633 transitions. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2022-11-21 09:21:00,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:21:00,146 INFO L93 Difference]: Finished difference Result 15419 states and 22475 transitions. [2022-11-21 09:21:00,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 09:21:00,147 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 250 [2022-11-21 09:21:00,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:21:00,192 INFO L225 Difference]: With dead ends: 15419 [2022-11-21 09:21:00,192 INFO L226 Difference]: Without dead ends: 11088 [2022-11-21 09:21:00,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 314 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2022-11-21 09:21:00,207 INFO L413 NwaCegarLoop]: 2250 mSDtfsCounter, 1428 mSDsluCounter, 8008 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 427 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1490 SdHoareTripleChecker+Valid, 10258 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 427 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-21 09:21:00,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1490 Valid, 10258 Invalid, 467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [427 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-21 09:21:00,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11088 states. [2022-11-21 09:21:01,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11088 to 9961. [2022-11-21 09:21:01,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9961 states, 6846 states have (on average 1.3556821501606777) internal successors, (9281), 7076 states have internal predecessors, (9281), 2545 states have call successors, (2545), 568 states have call predecessors, (2545), 569 states have return successors, (2550), 2505 states have call predecessors, (2550), 2537 states have call successors, (2550) [2022-11-21 09:21:01,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9961 states to 9961 states and 14376 transitions. [2022-11-21 09:21:01,051 INFO L78 Accepts]: Start accepts. Automaton has 9961 states and 14376 transitions. Word has length 250 [2022-11-21 09:21:01,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:21:01,052 INFO L495 AbstractCegarLoop]: Abstraction has 9961 states and 14376 transitions. [2022-11-21 09:21:01,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2022-11-21 09:21:01,052 INFO L276 IsEmpty]: Start isEmpty. Operand 9961 states and 14376 transitions. [2022-11-21 09:21:01,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2022-11-21 09:21:01,059 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:21:01,059 INFO L195 NwaCegarLoop]: trace histogram [20, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:21:01,080 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ade15093-a170-4e37-9a15-1808fa3167c9/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-11-21 09:21:01,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ade15093-a170-4e37-9a15-1808fa3167c9/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:21:01,275 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:21:01,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:21:01,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1130787862, now seen corresponding path program 1 times [2022-11-21 09:21:01,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:21:01,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771218483] [2022-11-21 09:21:01,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:21:01,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:21:01,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:21:02,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 09:21:02,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:21:02,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:21:02,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:21:02,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 09:21:02,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:21:02,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-21 09:21:02,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:21:02,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:21:02,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:21:02,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 09:21:02,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:21:02,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-21 09:21:02,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:21:02,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:21:02,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:21:02,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 09:21:02,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:21:02,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-21 09:21:02,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:21:02,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:21:02,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:21:02,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 09:21:02,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:21:02,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-21 09:21:02,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:21:02,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:21:02,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:21:02,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 09:21:02,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:21:02,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-21 09:21:02,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:21:02,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:21:02,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:21:02,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 09:21:02,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:21:02,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-21 09:21:02,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:21:02,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:21:02,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:21:02,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-21 09:21:02,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:21:02,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:21:02,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:21:02,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-11-21 09:21:02,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:21:02,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:21:02,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:21:02,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-11-21 09:21:02,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:21:02,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:21:02,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:21:02,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-11-21 09:21:02,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:21:02,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:21:02,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:21:02,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-11-21 09:21:02,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:21:02,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-11-21 09:21:02,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:21:02,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:21:02,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:21:02,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-11-21 09:21:02,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:21:02,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:21:02,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:21:02,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-11-21 09:21:02,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:21:02,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 09:21:02,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:21:02,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-11-21 09:21:02,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:21:02,455 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 600 trivial. 0 not checked. [2022-11-21 09:21:02,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:21:02,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771218483] [2022-11-21 09:21:02,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771218483] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:21:02,456 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:21:02,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-21 09:21:02,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188692891] [2022-11-21 09:21:02,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:21:02,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 09:21:02,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:21:02,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 09:21:02,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-21 09:21:02,460 INFO L87 Difference]: Start difference. First operand 9961 states and 14376 transitions. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 6 states have internal predecessors, (84), 2 states have call successors, (23), 6 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-21 09:21:04,508 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 [] [2022-11-21 09:21:06,549 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 09:21:08,595 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 09:21:10,645 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 []