./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-media-dvb-ttusb-dec-ttusb_dec.ko.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae92b4f-a367-4d1e-9745-07391e72f2bb/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae92b4f-a367-4d1e-9745-07391e72f2bb/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae92b4f-a367-4d1e-9745-07391e72f2bb/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae92b4f-a367-4d1e-9745-07391e72f2bb/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-media-dvb-ttusb-dec-ttusb_dec.ko.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae92b4f-a367-4d1e-9745-07391e72f2bb/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae92b4f-a367-4d1e-9745-07391e72f2bb/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 2c6aa6e54aa03d80dc4005d195dc80cde5e772aed59b94df03248a4abb3fc0ec --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 10:52:41,643 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:52:41,645 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:52:41,672 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:52:41,676 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:52:41,681 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:52:41,684 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:52:41,689 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:52:41,692 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:52:41,701 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:52:41,702 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:52:41,703 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:52:41,703 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:52:41,704 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:52:41,705 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:52:41,706 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:52:41,707 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:52:41,708 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:52:41,710 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:52:41,712 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:52:41,713 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:52:41,715 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:52:41,716 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:52:41,717 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:52:41,721 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:52:41,722 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:52:41,722 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:52:41,723 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:52:41,724 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:52:41,725 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:52:41,725 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:52:41,726 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:52:41,727 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:52:41,728 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:52:41,729 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:52:41,729 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:52:41,730 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:52:41,731 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:52:41,731 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:52:41,732 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:52:41,733 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:52:41,738 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae92b4f-a367-4d1e-9745-07391e72f2bb/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-20 10:52:41,780 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:52:41,781 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:52:41,781 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:52:41,781 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:52:41,782 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 10:52:41,783 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 10:52:41,783 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:52:41,784 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:52:41,784 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:52:41,784 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:52:41,785 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 10:52:41,790 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:52:41,790 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 10:52:41,791 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 10:52:41,791 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 10:52:41,791 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 10:52:41,791 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:52:41,791 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 10:52:41,792 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:52:41,792 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:52:41,792 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 10:52:41,792 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:52:41,793 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:52:41,793 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 10:52:41,793 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 10:52:41,794 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 10:52:41,794 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 10:52:41,794 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 10:52:41,795 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 10:52:41,795 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 10:52:41,796 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_dae92b4f-a367-4d1e-9745-07391e72f2bb/bin/uautomizer-ug76WZFUDN/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae92b4f-a367-4d1e-9745-07391e72f2bb/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2c6aa6e54aa03d80dc4005d195dc80cde5e772aed59b94df03248a4abb3fc0ec [2022-11-20 10:52:42,181 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:52:42,226 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:52:42,230 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:52:42,233 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:52:42,234 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:52:42,235 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae92b4f-a367-4d1e-9745-07391e72f2bb/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-media-dvb-ttusb-dec-ttusb_dec.ko.cil.out.i [2022-11-20 10:52:45,502 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:52:46,242 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:52:46,243 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae92b4f-a367-4d1e-9745-07391e72f2bb/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-media-dvb-ttusb-dec-ttusb_dec.ko.cil.out.i [2022-11-20 10:52:46,281 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae92b4f-a367-4d1e-9745-07391e72f2bb/bin/uautomizer-ug76WZFUDN/data/b74ad6106/32487d095c084f858c021bbb3cf32c4a/FLAG847cfe8ad [2022-11-20 10:52:46,297 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae92b4f-a367-4d1e-9745-07391e72f2bb/bin/uautomizer-ug76WZFUDN/data/b74ad6106/32487d095c084f858c021bbb3cf32c4a [2022-11-20 10:52:46,304 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:52:46,306 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:52:46,310 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:52:46,310 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:52:46,313 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:52:46,314 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:52:46" (1/1) ... [2022-11-20 10:52:46,315 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@100a5aa0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:52:46, skipping insertion in model container [2022-11-20 10:52:46,316 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:52:46" (1/1) ... [2022-11-20 10:52:46,323 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:52:46,527 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:52:48,353 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_dae92b4f-a367-4d1e-9745-07391e72f2bb/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-media-dvb-ttusb-dec-ttusb_dec.ko.cil.out.i[284671,284684] [2022-11-20 10:52:48,416 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:52:48,526 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 10:52:48,917 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_dae92b4f-a367-4d1e-9745-07391e72f2bb/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-media-dvb-ttusb-dec-ttusb_dec.ko.cil.out.i[284671,284684] [2022-11-20 10:52:48,936 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:52:49,017 INFO L208 MainTranslator]: Completed translation [2022-11-20 10:52:49,018 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:52:49 WrapperNode [2022-11-20 10:52:49,019 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 10:52:49,021 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 10:52:49,021 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 10:52:49,022 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 10:52:49,029 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:52:49" (1/1) ... [2022-11-20 10:52:49,111 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:52:49" (1/1) ... [2022-11-20 10:52:49,254 INFO L138 Inliner]: procedures = 177, calls = 1621, calls flagged for inlining = 87, calls inlined = 82, statements flattened = 3770 [2022-11-20 10:52:49,255 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 10:52:49,255 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 10:52:49,256 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 10:52:49,256 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 10:52:49,266 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:52:49" (1/1) ... [2022-11-20 10:52:49,266 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:52:49" (1/1) ... [2022-11-20 10:52:49,284 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:52:49" (1/1) ... [2022-11-20 10:52:49,285 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:52:49" (1/1) ... [2022-11-20 10:52:49,428 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:52:49" (1/1) ... [2022-11-20 10:52:49,517 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:52:49" (1/1) ... [2022-11-20 10:52:49,547 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:52:49" (1/1) ... [2022-11-20 10:52:49,567 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:52:49" (1/1) ... [2022-11-20 10:52:49,597 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 10:52:49,600 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 10:52:49,601 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 10:52:49,601 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 10:52:49,602 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:52:49" (1/1) ... [2022-11-20 10:52:49,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:52:49,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae92b4f-a367-4d1e-9745-07391e72f2bb/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:52:49,634 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae92b4f-a367-4d1e-9745-07391e72f2bb/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 10:52:49,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae92b4f-a367-4d1e-9745-07391e72f2bb/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 10:52:49,678 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-20 10:52:49,678 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-20 10:52:49,678 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2022-11-20 10:52:49,678 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2022-11-20 10:52:49,678 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-20 10:52:49,679 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-20 10:52:49,679 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_free_iso_urbs [2022-11-20 10:52:49,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_free_iso_urbs [2022-11-20 10:52:49,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-20 10:52:49,679 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2022-11-20 10:52:49,679 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2022-11-20 10:52:49,679 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~int~X~$Pointer$~X~int~TO~int [2022-11-20 10:52:49,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~int~X~$Pointer$~X~int~TO~int [2022-11-20 10:52:49,680 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-20 10:52:49,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-20 10:52:49,680 INFO L130 BoogieDeclarations]: Found specification of procedure usb_bulk_msg [2022-11-20 10:52:49,680 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_bulk_msg [2022-11-20 10:52:49,680 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 10:52:49,681 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_init_dvb [2022-11-20 10:52:49,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_init_dvb [2022-11-20 10:52:49,681 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_interface [2022-11-20 10:52:49,682 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_interface [2022-11-20 10:52:49,682 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_unregister_adapter [2022-11-20 10:52:49,682 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_unregister_adapter [2022-11-20 10:52:49,682 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-20 10:52:49,682 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-20 10:52:49,683 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-11-20 10:52:49,683 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-11-20 10:52:49,683 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-20 10:52:49,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-20 10:52:49,683 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-11-20 10:52:49,683 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-11-20 10:52:49,684 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible_nested [2022-11-20 10:52:49,685 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible_nested [2022-11-20 10:52:49,685 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-20 10:52:49,685 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-20 10:52:49,686 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_start_iso_xfer [2022-11-20 10:52:49,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_start_iso_xfer [2022-11-20 10:52:49,686 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2022-11-20 10:52:49,687 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2022-11-20 10:52:49,687 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_send_command [2022-11-20 10:52:49,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_send_command [2022-11-20 10:52:49,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 10:52:49,687 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-20 10:52:49,687 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-20 10:52:49,688 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_setup_urbs [2022-11-20 10:52:49,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_setup_urbs [2022-11-20 10:52:49,688 INFO L130 BoogieDeclarations]: Found specification of procedure input_sync [2022-11-20 10:52:49,688 INFO L138 BoogieDeclarations]: Found implementation of procedure input_sync [2022-11-20 10:52:49,689 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume_stop [2022-11-20 10:52:49,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume_stop [2022-11-20 10:52:49,689 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_set_pids [2022-11-20 10:52:49,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_set_pids [2022-11-20 10:52:49,689 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_exit [2022-11-20 10:52:49,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_exit [2022-11-20 10:52:49,690 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_exit_usb [2022-11-20 10:52:49,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_exit_usb [2022-11-20 10:52:49,691 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_dmx_release [2022-11-20 10:52:49,691 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_dmx_release [2022-11-20 10:52:49,691 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 10:52:49,691 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-20 10:52:49,691 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-20 10:52:49,691 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_init [2022-11-20 10:52:49,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_init [2022-11-20 10:52:49,692 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 10:52:49,692 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 10:52:49,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 10:52:49,692 INFO L130 BoogieDeclarations]: Found specification of procedure input_event [2022-11-20 10:52:49,692 INFO L138 BoogieDeclarations]: Found implementation of procedure input_event [2022-11-20 10:52:49,693 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-20 10:52:49,693 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-20 10:52:49,694 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-20 10:52:49,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-20 10:52:49,694 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 10:52:49,694 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2022-11-20 10:52:49,694 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2022-11-20 10:52:49,694 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-20 10:52:49,695 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-20 10:52:49,695 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_blast_assert [2022-11-20 10:52:49,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_blast_assert [2022-11-20 10:52:49,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 10:52:49,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-20 10:52:49,695 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_probe [2022-11-20 10:52:49,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_probe [2022-11-20 10:52:49,696 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2022-11-20 10:52:49,696 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2022-11-20 10:52:49,697 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_dmxdev_release [2022-11-20 10:52:49,697 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_dmxdev_release [2022-11-20 10:52:49,697 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2022-11-20 10:52:49,698 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2022-11-20 10:52:49,698 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-20 10:52:49,698 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-20 10:52:49,698 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-20 10:52:49,698 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-20 10:52:49,699 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2022-11-20 10:52:49,699 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2022-11-20 10:52:49,699 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_exit_dvb [2022-11-20 10:52:49,699 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_exit_dvb [2022-11-20 10:52:49,699 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-11-20 10:52:49,700 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-11-20 10:52:49,700 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-20 10:52:49,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-20 10:52:49,700 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_disconnect [2022-11-20 10:52:49,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_disconnect [2022-11-20 10:52:49,701 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2022-11-20 10:52:49,701 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2022-11-20 10:52:49,701 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undefined_pointer [2022-11-20 10:52:49,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undefined_pointer [2022-11-20 10:52:49,702 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_set_model [2022-11-20 10:52:49,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_set_model [2022-11-20 10:52:49,702 INFO L130 BoogieDeclarations]: Found specification of procedure release_firmware [2022-11-20 10:52:49,702 INFO L138 BoogieDeclarations]: Found implementation of procedure release_firmware [2022-11-20 10:52:49,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 10:52:49,703 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_key [2022-11-20 10:52:49,703 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_key [2022-11-20 10:52:49,703 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_stop_iso_xfer [2022-11-20 10:52:49,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_stop_iso_xfer [2022-11-20 10:52:49,704 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2022-11-20 10:52:49,705 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2022-11-20 10:52:49,707 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_filter_pes2ts_init [2022-11-20 10:52:49,708 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_filter_pes2ts_init [2022-11-20 10:52:49,708 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-20 10:52:49,708 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 10:52:49,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 10:52:50,454 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 10:52:50,457 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 10:52:50,630 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-20 10:52:50,806 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume !false; [2022-11-20 10:52:50,806 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume false; [2022-11-20 10:52:51,161 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-20 10:52:52,892 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##203: assume false; [2022-11-20 10:52:52,892 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##204: assume !false; [2022-11-20 10:52:53,289 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_assume_stopFINAL: assume true; [2022-11-20 10:52:53,305 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-20 10:52:53,308 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-20 10:52:55,958 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##78: assume !false; [2022-11-20 10:52:55,958 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##77: assume false; [2022-11-20 10:52:55,958 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##39: assume !false; [2022-11-20 10:52:55,958 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##38: assume false; [2022-11-20 10:52:55,959 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L8653: ttusb_dec_start_feed_#res#1 := 0; [2022-11-20 10:52:56,563 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-20 10:52:57,839 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume false; [2022-11-20 10:52:57,839 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume !false; [2022-11-20 10:52:57,917 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 10:52:57,940 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 10:52:57,940 INFO L300 CfgBuilder]: Removed 38 assume(true) statements. [2022-11-20 10:52:57,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:52:57 BoogieIcfgContainer [2022-11-20 10:52:57,946 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 10:52:57,950 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 10:52:57,950 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 10:52:57,954 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 10:52:57,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:52:46" (1/3) ... [2022-11-20 10:52:57,956 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12c0d546 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:52:57, skipping insertion in model container [2022-11-20 10:52:57,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:52:49" (2/3) ... [2022-11-20 10:52:57,957 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12c0d546 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:52:57, skipping insertion in model container [2022-11-20 10:52:57,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:52:57" (3/3) ... [2022-11-20 10:52:57,962 INFO L112 eAbstractionObserver]: Analyzing ICFG usb_urb-drivers-media-dvb-ttusb-dec-ttusb_dec.ko.cil.out.i [2022-11-20 10:52:57,984 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 10:52:57,984 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 10:52:58,094 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:52:58,103 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;@67bc5ce8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:52:58,103 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 10:52:58,113 INFO L276 IsEmpty]: Start isEmpty. Operand has 1006 states, 752 states have (on average 1.4148936170212767) internal successors, (1064), 776 states have internal predecessors, (1064), 199 states have call successors, (199), 54 states have call predecessors, (199), 53 states have return successors, (197), 191 states have call predecessors, (197), 197 states have call successors, (197) [2022-11-20 10:52:58,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-20 10:52:58,122 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:52:58,122 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:52:58,123 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:52:58,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:52:58,130 INFO L85 PathProgramCache]: Analyzing trace with hash 1639951202, now seen corresponding path program 1 times [2022-11-20 10:52:58,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:52:58,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535117731] [2022-11-20 10:52:58,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:52:58,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:52:58,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:52:59,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 10:52:59,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:52:59,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:52:59,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:52:59,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535117731] [2022-11-20 10:52:59,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535117731] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:52:59,153 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:52:59,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:52:59,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106425420] [2022-11-20 10:52:59,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:52:59,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:52:59,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:52:59,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:52:59,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:52:59,209 INFO L87 Difference]: Start difference. First operand has 1006 states, 752 states have (on average 1.4148936170212767) internal successors, (1064), 776 states have internal predecessors, (1064), 199 states have call successors, (199), 54 states have call predecessors, (199), 53 states have return successors, (197), 191 states have call predecessors, (197), 197 states have call successors, (197) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 10:52:59,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:52:59,636 INFO L93 Difference]: Finished difference Result 2978 states and 4448 transitions. [2022-11-20 10:52:59,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:52:59,639 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-11-20 10:52:59,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:52:59,675 INFO L225 Difference]: With dead ends: 2978 [2022-11-20 10:52:59,675 INFO L226 Difference]: Without dead ends: 1970 [2022-11-20 10:52:59,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:52:59,702 INFO L413 NwaCegarLoop]: 1965 mSDtfsCounter, 1358 mSDsluCounter, 1358 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1358 SdHoareTripleChecker+Valid, 3323 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:52:59,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1358 Valid, 3323 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:52:59,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1970 states. [2022-11-20 10:52:59,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1970 to 1966. [2022-11-20 10:52:59,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1966 states, 1473 states have (on average 1.3027834351663272) internal successors, (1919), 1501 states have internal predecessors, (1919), 389 states have call successors, (389), 104 states have call predecessors, (389), 103 states have return successors, (399), 373 states have call predecessors, (399), 385 states have call successors, (399) [2022-11-20 10:52:59,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1966 states to 1966 states and 2707 transitions. [2022-11-20 10:52:59,989 INFO L78 Accepts]: Start accepts. Automaton has 1966 states and 2707 transitions. Word has length 16 [2022-11-20 10:52:59,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:52:59,989 INFO L495 AbstractCegarLoop]: Abstraction has 1966 states and 2707 transitions. [2022-11-20 10:52:59,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 10:52:59,990 INFO L276 IsEmpty]: Start isEmpty. Operand 1966 states and 2707 transitions. [2022-11-20 10:52:59,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-20 10:52:59,991 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:52:59,991 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:52:59,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 10:52:59,992 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:52:59,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:52:59,993 INFO L85 PathProgramCache]: Analyzing trace with hash -701499781, now seen corresponding path program 1 times [2022-11-20 10:52:59,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:52:59,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840137986] [2022-11-20 10:52:59,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:52:59,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:53:00,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:00,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 10:53:00,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:00,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:53:00,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:53:00,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840137986] [2022-11-20 10:53:00,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840137986] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:53:00,603 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:53:00,603 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:53:00,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865558487] [2022-11-20 10:53:00,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:53:00,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:53:00,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:53:00,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:53:00,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:53:00,612 INFO L87 Difference]: Start difference. First operand 1966 states and 2707 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 10:53:00,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:53:00,930 INFO L93 Difference]: Finished difference Result 5871 states and 8162 transitions. [2022-11-20 10:53:00,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:53:00,931 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-11-20 10:53:00,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:53:00,972 INFO L225 Difference]: With dead ends: 5871 [2022-11-20 10:53:00,973 INFO L226 Difference]: Without dead ends: 3909 [2022-11-20 10:53:00,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:53:00,992 INFO L413 NwaCegarLoop]: 1801 mSDtfsCounter, 1345 mSDsluCounter, 1351 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1345 SdHoareTripleChecker+Valid, 3152 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:53:00,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1345 Valid, 3152 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:53:01,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3909 states. [2022-11-20 10:53:01,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3909 to 3902. [2022-11-20 10:53:01,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3902 states, 2925 states have (on average 1.3022222222222222) internal successors, (3809), 2976 states have internal predecessors, (3809), 772 states have call successors, (772), 205 states have call predecessors, (772), 204 states have return successors, (832), 744 states have call predecessors, (832), 768 states have call successors, (832) [2022-11-20 10:53:01,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3902 states to 3902 states and 5413 transitions. [2022-11-20 10:53:01,381 INFO L78 Accepts]: Start accepts. Automaton has 3902 states and 5413 transitions. Word has length 17 [2022-11-20 10:53:01,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:53:01,381 INFO L495 AbstractCegarLoop]: Abstraction has 3902 states and 5413 transitions. [2022-11-20 10:53:01,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 10:53:01,383 INFO L276 IsEmpty]: Start isEmpty. Operand 3902 states and 5413 transitions. [2022-11-20 10:53:01,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-20 10:53:01,389 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:53:01,392 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:53:01,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 10:53:01,393 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:53:01,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:53:01,394 INFO L85 PathProgramCache]: Analyzing trace with hash 120007349, now seen corresponding path program 1 times [2022-11-20 10:53:01,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:53:01,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747794266] [2022-11-20 10:53:01,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:53:01,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:53:01,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:02,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 10:53:02,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:02,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-20 10:53:02,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:02,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-20 10:53:02,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:02,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:53:02,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:53:02,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747794266] [2022-11-20 10:53:02,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747794266] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:53:02,853 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:53:02,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 10:53:02,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903259742] [2022-11-20 10:53:02,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:53:02,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:53:02,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:53:02,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:53:02,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:53:02,857 INFO L87 Difference]: Start difference. First operand 3902 states and 5413 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-20 10:53:05,869 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 [] [2022-11-20 10:53:12,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:53:12,526 INFO L93 Difference]: Finished difference Result 8682 states and 12282 transitions. [2022-11-20 10:53:12,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:53:12,527 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 60 [2022-11-20 10:53:12,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:53:12,564 INFO L225 Difference]: With dead ends: 8682 [2022-11-20 10:53:12,565 INFO L226 Difference]: Without dead ends: 4788 [2022-11-20 10:53:12,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:53:12,594 INFO L413 NwaCegarLoop]: 1241 mSDtfsCounter, 543 mSDsluCounter, 3994 mSDsCounter, 0 mSdLazyCounter, 1793 mSolverCounterSat, 224 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 604 SdHoareTripleChecker+Valid, 5235 SdHoareTripleChecker+Invalid, 2018 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 1793 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:53:12,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [604 Valid, 5235 Invalid, 2018 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [224 Valid, 1793 Invalid, 1 Unknown, 0 Unchecked, 9.1s Time] [2022-11-20 10:53:12,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4788 states. [2022-11-20 10:53:12,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4788 to 4007. [2022-11-20 10:53:12,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4007 states, 3000 states have (on average 1.2983333333333333) internal successors, (3895), 3057 states have internal predecessors, (3895), 793 states have call successors, (793), 205 states have call predecessors, (793), 213 states have return successors, (892), 768 states have call predecessors, (892), 789 states have call successors, (892) [2022-11-20 10:53:12,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4007 states to 4007 states and 5580 transitions. [2022-11-20 10:53:12,877 INFO L78 Accepts]: Start accepts. Automaton has 4007 states and 5580 transitions. Word has length 60 [2022-11-20 10:53:12,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:53:12,878 INFO L495 AbstractCegarLoop]: Abstraction has 4007 states and 5580 transitions. [2022-11-20 10:53:12,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-20 10:53:12,878 INFO L276 IsEmpty]: Start isEmpty. Operand 4007 states and 5580 transitions. [2022-11-20 10:53:12,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-20 10:53:12,881 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:53:12,881 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:53:12,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 10:53:12,881 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:53:12,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:53:12,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1805525962, now seen corresponding path program 1 times [2022-11-20 10:53:12,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:53:12,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656015398] [2022-11-20 10:53:12,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:53:12,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:53:13,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:13,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 10:53:13,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:13,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-20 10:53:13,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:13,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-20 10:53:13,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:13,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:53:13,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:53:13,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656015398] [2022-11-20 10:53:13,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656015398] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:53:13,396 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:53:13,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:53:13,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041688075] [2022-11-20 10:53:13,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:53:13,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:53:13,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:53:13,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:53:13,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:53:13,400 INFO L87 Difference]: Start difference. First operand 4007 states and 5580 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-20 10:53:16,260 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 10:53:20,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:53:20,863 INFO L93 Difference]: Finished difference Result 8819 states and 12504 transitions. [2022-11-20 10:53:20,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:53:20,865 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 60 [2022-11-20 10:53:20,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:53:20,902 INFO L225 Difference]: With dead ends: 8819 [2022-11-20 10:53:20,902 INFO L226 Difference]: Without dead ends: 4823 [2022-11-20 10:53:20,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:53:20,931 INFO L413 NwaCegarLoop]: 1229 mSDtfsCounter, 553 mSDsluCounter, 1721 mSDsCounter, 0 mSdLazyCounter, 949 mSolverCounterSat, 231 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 617 SdHoareTripleChecker+Valid, 2950 SdHoareTripleChecker+Invalid, 1181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 231 IncrementalHoareTripleChecker+Valid, 949 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:53:20,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [617 Valid, 2950 Invalid, 1181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [231 Valid, 949 Invalid, 1 Unknown, 0 Unchecked, 7.1s Time] [2022-11-20 10:53:20,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4823 states. [2022-11-20 10:53:21,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4823 to 4042. [2022-11-20 10:53:21,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4042 states, 3035 states have (on average 1.2985172981878088) internal successors, (3941), 3092 states have internal predecessors, (3941), 793 states have call successors, (793), 205 states have call predecessors, (793), 213 states have return successors, (892), 768 states have call predecessors, (892), 789 states have call successors, (892) [2022-11-20 10:53:21,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4042 states to 4042 states and 5626 transitions. [2022-11-20 10:53:21,208 INFO L78 Accepts]: Start accepts. Automaton has 4042 states and 5626 transitions. Word has length 60 [2022-11-20 10:53:21,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:53:21,208 INFO L495 AbstractCegarLoop]: Abstraction has 4042 states and 5626 transitions. [2022-11-20 10:53:21,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-20 10:53:21,209 INFO L276 IsEmpty]: Start isEmpty. Operand 4042 states and 5626 transitions. [2022-11-20 10:53:21,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-20 10:53:21,215 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:53:21,215 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:53:21,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 10:53:21,216 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:53:21,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:53:21,217 INFO L85 PathProgramCache]: Analyzing trace with hash -322743963, now seen corresponding path program 1 times [2022-11-20 10:53:21,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:53:21,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953231515] [2022-11-20 10:53:21,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:53:21,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:53:21,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:22,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 10:53:22,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:22,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 10:53:22,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:22,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 10:53:22,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:22,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:53:22,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:22,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:53:22,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:22,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-20 10:53:22,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:22,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-20 10:53:22,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:22,436 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 10:53:22,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:53:22,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953231515] [2022-11-20 10:53:22,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953231515] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:53:22,438 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:53:22,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 10:53:22,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322477476] [2022-11-20 10:53:22,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:53:22,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:53:22,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:53:22,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:53:22,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:53:22,442 INFO L87 Difference]: Start difference. First operand 4042 states and 5626 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 5 states have internal predecessors, (74), 4 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-20 10:53:26,702 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 10:53:42,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:53:42,336 INFO L93 Difference]: Finished difference Result 14193 states and 21468 transitions. [2022-11-20 10:53:42,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 10:53:42,349 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 5 states have internal predecessors, (74), 4 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 94 [2022-11-20 10:53:42,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:53:42,429 INFO L225 Difference]: With dead ends: 14193 [2022-11-20 10:53:42,430 INFO L226 Difference]: Without dead ends: 10163 [2022-11-20 10:53:42,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2022-11-20 10:53:42,464 INFO L413 NwaCegarLoop]: 1831 mSDtfsCounter, 2788 mSDsluCounter, 4457 mSDsCounter, 0 mSdLazyCounter, 5178 mSolverCounterSat, 1087 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2998 SdHoareTripleChecker+Valid, 6288 SdHoareTripleChecker+Invalid, 6266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1087 IncrementalHoareTripleChecker+Valid, 5178 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.7s IncrementalHoareTripleChecker+Time [2022-11-20 10:53:42,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2998 Valid, 6288 Invalid, 6266 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1087 Valid, 5178 Invalid, 1 Unknown, 0 Unchecked, 18.7s Time] [2022-11-20 10:53:42,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10163 states. [2022-11-20 10:53:43,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10163 to 8257. [2022-11-20 10:53:43,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8257 states, 6174 states have (on average 1.2977000323939099) internal successors, (8012), 6371 states have internal predecessors, (8012), 1580 states have call successors, (1580), 393 states have call predecessors, (1580), 502 states have return successors, (2508), 1552 states have call predecessors, (2508), 1576 states have call successors, (2508) [2022-11-20 10:53:43,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8257 states to 8257 states and 12100 transitions. [2022-11-20 10:53:43,275 INFO L78 Accepts]: Start accepts. Automaton has 8257 states and 12100 transitions. Word has length 94 [2022-11-20 10:53:43,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:53:43,277 INFO L495 AbstractCegarLoop]: Abstraction has 8257 states and 12100 transitions. [2022-11-20 10:53:43,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 5 states have internal predecessors, (74), 4 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-20 10:53:43,278 INFO L276 IsEmpty]: Start isEmpty. Operand 8257 states and 12100 transitions. [2022-11-20 10:53:43,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-20 10:53:43,281 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:53:43,281 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:53:43,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 10:53:43,281 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:53:43,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:53:43,282 INFO L85 PathProgramCache]: Analyzing trace with hash 564478883, now seen corresponding path program 1 times [2022-11-20 10:53:43,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:53:43,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040592722] [2022-11-20 10:53:43,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:53:43,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:53:43,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:44,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 10:53:44,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:44,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 10:53:44,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:44,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 10:53:44,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:44,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:53:44,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:44,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:53:44,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:44,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-20 10:53:44,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:44,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-20 10:53:44,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:44,293 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-20 10:53:44,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:53:44,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040592722] [2022-11-20 10:53:44,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040592722] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:53:44,294 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:53:44,294 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 10:53:44,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658228195] [2022-11-20 10:53:44,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:53:44,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:53:44,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:53:44,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:53:44,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:53:44,298 INFO L87 Difference]: Start difference. First operand 8257 states and 12100 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 5 states have internal predecessors, (70), 4 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-20 10:53:47,434 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 10:53:58,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:53:58,633 INFO L93 Difference]: Finished difference Result 19017 states and 28778 transitions. [2022-11-20 10:53:58,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 10:53:58,634 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 5 states have internal predecessors, (70), 4 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 94 [2022-11-20 10:53:58,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:53:58,724 INFO L225 Difference]: With dead ends: 19017 [2022-11-20 10:53:58,724 INFO L226 Difference]: Without dead ends: 10772 [2022-11-20 10:53:58,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-11-20 10:53:58,773 INFO L413 NwaCegarLoop]: 1098 mSDtfsCounter, 1402 mSDsluCounter, 3300 mSDsCounter, 0 mSdLazyCounter, 3417 mSolverCounterSat, 534 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1487 SdHoareTripleChecker+Valid, 4398 SdHoareTripleChecker+Invalid, 3952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 534 IncrementalHoareTripleChecker+Valid, 3417 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.4s IncrementalHoareTripleChecker+Time [2022-11-20 10:53:58,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1487 Valid, 4398 Invalid, 3952 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [534 Valid, 3417 Invalid, 1 Unknown, 0 Unchecked, 13.4s Time] [2022-11-20 10:53:58,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10772 states. [2022-11-20 10:53:59,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10772 to 8636. [2022-11-20 10:53:59,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8636 states, 6446 states have (on average 1.2967731926776296) internal successors, (8359), 6653 states have internal predecessors, (8359), 1649 states have call successors, (1649), 419 states have call predecessors, (1649), 540 states have return successors, (2695), 1623 states have call predecessors, (2695), 1645 states have call successors, (2695) [2022-11-20 10:53:59,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8636 states to 8636 states and 12703 transitions. [2022-11-20 10:53:59,609 INFO L78 Accepts]: Start accepts. Automaton has 8636 states and 12703 transitions. Word has length 94 [2022-11-20 10:53:59,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:53:59,692 INFO L495 AbstractCegarLoop]: Abstraction has 8636 states and 12703 transitions. [2022-11-20 10:53:59,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 5 states have internal predecessors, (70), 4 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-20 10:53:59,693 INFO L276 IsEmpty]: Start isEmpty. Operand 8636 states and 12703 transitions. [2022-11-20 10:53:59,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-20 10:53:59,694 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:53:59,695 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 10:53:59,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 10:53:59,695 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:53:59,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:53:59,695 INFO L85 PathProgramCache]: Analyzing trace with hash -642045285, now seen corresponding path program 1 times [2022-11-20 10:53:59,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:53:59,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133451574] [2022-11-20 10:53:59,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:53:59,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:53:59,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:00,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 10:54:00,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:00,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 10:54:00,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:00,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 10:54:00,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:00,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:54:00,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:00,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:54:00,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:00,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-20 10:54:00,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:00,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-20 10:54:00,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:00,345 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-20 10:54:00,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:54:00,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133451574] [2022-11-20 10:54:00,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133451574] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:54:00,349 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:54:00,349 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:54:00,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392837052] [2022-11-20 10:54:00,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:54:00,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:54:00,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:54:00,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:54:00,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:54:00,354 INFO L87 Difference]: Start difference. First operand 8636 states and 12703 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-20 10:54:03,341 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 10:54:09,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:54:09,117 INFO L93 Difference]: Finished difference Result 19307 states and 30000 transitions. [2022-11-20 10:54:09,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:54:09,117 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 103 [2022-11-20 10:54:09,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:54:09,196 INFO L225 Difference]: With dead ends: 19307 [2022-11-20 10:54:09,196 INFO L226 Difference]: Without dead ends: 10683 [2022-11-20 10:54:09,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:54:09,263 INFO L413 NwaCegarLoop]: 1124 mSDtfsCounter, 985 mSDsluCounter, 1735 mSDsCounter, 0 mSdLazyCounter, 1352 mSolverCounterSat, 529 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1052 SdHoareTripleChecker+Valid, 2859 SdHoareTripleChecker+Invalid, 1882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 529 IncrementalHoareTripleChecker+Valid, 1352 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2022-11-20 10:54:09,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1052 Valid, 2859 Invalid, 1882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [529 Valid, 1352 Invalid, 1 Unknown, 0 Unchecked, 7.8s Time] [2022-11-20 10:54:09,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10683 states. [2022-11-20 10:54:10,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10683 to 8662. [2022-11-20 10:54:10,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8662 states, 6472 states have (on average 1.2955809641532756) internal successors, (8385), 6679 states have internal predecessors, (8385), 1649 states have call successors, (1649), 419 states have call predecessors, (1649), 540 states have return successors, (2695), 1623 states have call predecessors, (2695), 1645 states have call successors, (2695) [2022-11-20 10:54:10,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8662 states to 8662 states and 12729 transitions. [2022-11-20 10:54:10,206 INFO L78 Accepts]: Start accepts. Automaton has 8662 states and 12729 transitions. Word has length 103 [2022-11-20 10:54:10,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:54:10,207 INFO L495 AbstractCegarLoop]: Abstraction has 8662 states and 12729 transitions. [2022-11-20 10:54:10,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-20 10:54:10,207 INFO L276 IsEmpty]: Start isEmpty. Operand 8662 states and 12729 transitions. [2022-11-20 10:54:10,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-11-20 10:54:10,209 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:54:10,210 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 10:54:10,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 10:54:10,210 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:54:10,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:54:10,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1280303477, now seen corresponding path program 1 times [2022-11-20 10:54:10,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:54:10,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386710465] [2022-11-20 10:54:10,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:10,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:54:10,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:10,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 10:54:10,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:10,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 10:54:10,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:10,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 10:54:10,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:10,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:54:10,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:10,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:54:10,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:10,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-20 10:54:10,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:10,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-20 10:54:10,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:10,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-20 10:54:10,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:10,878 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-20 10:54:10,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:54:10,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386710465] [2022-11-20 10:54:10,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386710465] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:54:10,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090722067] [2022-11-20 10:54:10,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:10,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:54:10,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae92b4f-a367-4d1e-9745-07391e72f2bb/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:54:10,884 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae92b4f-a367-4d1e-9745-07391e72f2bb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:54:10,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae92b4f-a367-4d1e-9745-07391e72f2bb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 10:54:12,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:12,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 2826 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:54:12,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:54:12,375 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 10:54:12,376 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:54:12,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1090722067] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:54:12,376 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:54:12,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2022-11-20 10:54:12,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476959705] [2022-11-20 10:54:12,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:54:12,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:54:12,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:54:12,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:54:12,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-20 10:54:12,379 INFO L87 Difference]: Start difference. First operand 8662 states and 12729 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 10:54:13,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:54:13,212 INFO L93 Difference]: Finished difference Result 17059 states and 25039 transitions. [2022-11-20 10:54:13,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:54:13,212 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 111 [2022-11-20 10:54:13,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:54:13,274 INFO L225 Difference]: With dead ends: 17059 [2022-11-20 10:54:13,274 INFO L226 Difference]: Without dead ends: 8398 [2022-11-20 10:54:13,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-20 10:54:13,340 INFO L413 NwaCegarLoop]: 1367 mSDtfsCounter, 13 mSDsluCounter, 4079 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 5446 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:54:13,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 5446 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 10:54:13,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8398 states. [2022-11-20 10:54:14,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8398 to 8350. [2022-11-20 10:54:14,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8350 states, 6226 states have (on average 1.2934468358496627) internal successors, (8053), 6426 states have internal predecessors, (8053), 1605 states have call successors, (1605), 398 states have call predecessors, (1605), 518 states have return successors, (2578), 1581 states have call predecessors, (2578), 1601 states have call successors, (2578) [2022-11-20 10:54:14,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8350 states to 8350 states and 12236 transitions. [2022-11-20 10:54:14,164 INFO L78 Accepts]: Start accepts. Automaton has 8350 states and 12236 transitions. Word has length 111 [2022-11-20 10:54:14,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:54:14,165 INFO L495 AbstractCegarLoop]: Abstraction has 8350 states and 12236 transitions. [2022-11-20 10:54:14,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 10:54:14,165 INFO L276 IsEmpty]: Start isEmpty. Operand 8350 states and 12236 transitions. [2022-11-20 10:54:14,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-20 10:54:14,167 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:54:14,168 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:54:14,182 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae92b4f-a367-4d1e-9745-07391e72f2bb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 10:54:14,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae92b4f-a367-4d1e-9745-07391e72f2bb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-20 10:54:14,382 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:54:14,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:54:14,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1299210224, now seen corresponding path program 1 times [2022-11-20 10:54:14,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:54:14,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833554507] [2022-11-20 10:54:14,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:14,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:54:14,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:16,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 10:54:16,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:16,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 10:54:16,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:16,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 10:54:16,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:16,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:54:16,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:17,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:54:17,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:17,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 10:54:17,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:17,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-20 10:54:17,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:17,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-20 10:54:17,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:17,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-20 10:54:17,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:17,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-20 10:54:17,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:17,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-20 10:54:17,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:17,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-20 10:54:17,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:17,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-20 10:54:17,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:17,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-20 10:54:17,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:17,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 10:54:17,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:17,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-20 10:54:17,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:17,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-20 10:54:17,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:17,572 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-20 10:54:17,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:54:17,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833554507] [2022-11-20 10:54:17,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833554507] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:54:17,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [83341541] [2022-11-20 10:54:17,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:17,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:54:17,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae92b4f-a367-4d1e-9745-07391e72f2bb/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:54:17,575 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae92b4f-a367-4d1e-9745-07391e72f2bb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:54:17,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae92b4f-a367-4d1e-9745-07391e72f2bb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 10:54:18,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:18,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 2971 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 10:54:18,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:54:19,100 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-20 10:54:19,100 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:54:19,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [83341541] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:54:19,101 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:54:19,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [13] total 16 [2022-11-20 10:54:19,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147883687] [2022-11-20 10:54:19,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:54:19,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:54:19,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:54:19,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:54:19,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2022-11-20 10:54:19,104 INFO L87 Difference]: Start difference. First operand 8350 states and 12236 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-20 10:54:19,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:54:19,732 INFO L93 Difference]: Finished difference Result 8402 states and 12288 transitions. [2022-11-20 10:54:19,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:54:19,733 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) Word has length 124 [2022-11-20 10:54:19,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:54:19,783 INFO L225 Difference]: With dead ends: 8402 [2022-11-20 10:54:19,783 INFO L226 Difference]: Without dead ends: 8376 [2022-11-20 10:54:19,792 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2022-11-20 10:54:19,793 INFO L413 NwaCegarLoop]: 1356 mSDtfsCounter, 1353 mSDsluCounter, 2718 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1354 SdHoareTripleChecker+Valid, 4074 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:54:19,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1354 Valid, 4074 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:54:19,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8376 states. [2022-11-20 10:54:20,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8376 to 8350. [2022-11-20 10:54:20,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8350 states, 6226 states have (on average 1.292964985544491) internal successors, (8050), 6426 states have internal predecessors, (8050), 1605 states have call successors, (1605), 398 states have call predecessors, (1605), 518 states have return successors, (2578), 1581 states have call predecessors, (2578), 1601 states have call successors, (2578) [2022-11-20 10:54:20,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8350 states to 8350 states and 12233 transitions. [2022-11-20 10:54:20,597 INFO L78 Accepts]: Start accepts. Automaton has 8350 states and 12233 transitions. Word has length 124 [2022-11-20 10:54:20,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:54:20,599 INFO L495 AbstractCegarLoop]: Abstraction has 8350 states and 12233 transitions. [2022-11-20 10:54:20,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-20 10:54:20,600 INFO L276 IsEmpty]: Start isEmpty. Operand 8350 states and 12233 transitions. [2022-11-20 10:54:20,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-11-20 10:54:20,606 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:54:20,606 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:54:20,627 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae92b4f-a367-4d1e-9745-07391e72f2bb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 10:54:20,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae92b4f-a367-4d1e-9745-07391e72f2bb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:54:20,820 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:54:20,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:54:20,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1226178994, now seen corresponding path program 1 times [2022-11-20 10:54:20,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:54:20,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269615243] [2022-11-20 10:54:20,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:20,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:54:20,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:22,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 10:54:22,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:22,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-20 10:54:22,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:22,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:54:22,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:22,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:54:22,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:22,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-20 10:54:22,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:22,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-20 10:54:22,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:23,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-20 10:54:23,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:23,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-20 10:54:23,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:23,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-20 10:54:23,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:23,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-20 10:54:23,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:23,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-20 10:54:23,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:23,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-20 10:54:23,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:23,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-20 10:54:23,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:23,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 10:54:23,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:23,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-20 10:54:23,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:23,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-20 10:54:23,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:23,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-20 10:54:23,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:23,179 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-20 10:54:23,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:54:23,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269615243] [2022-11-20 10:54:23,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269615243] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:54:23,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1300325172] [2022-11-20 10:54:23,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:23,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:54:23,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae92b4f-a367-4d1e-9745-07391e72f2bb/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:54:23,182 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae92b4f-a367-4d1e-9745-07391e72f2bb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:54:23,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae92b4f-a367-4d1e-9745-07391e72f2bb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 10:54:24,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:24,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 3048 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-20 10:54:24,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:54:24,791 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-20 10:54:24,797 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:54:24,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1300325172] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:54:24,798 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:54:24,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2022-11-20 10:54:24,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675462287] [2022-11-20 10:54:24,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:54:24,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:54:24,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:54:24,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:54:24,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2022-11-20 10:54:24,800 INFO L87 Difference]: Start difference. First operand 8350 states and 12233 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-20 10:54:25,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:54:25,733 INFO L93 Difference]: Finished difference Result 14535 states and 21644 transitions. [2022-11-20 10:54:25,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:54:25,734 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) Word has length 130 [2022-11-20 10:54:25,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:54:25,780 INFO L225 Difference]: With dead ends: 14535 [2022-11-20 10:54:25,780 INFO L226 Difference]: Without dead ends: 6233 [2022-11-20 10:54:25,857 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2022-11-20 10:54:25,858 INFO L413 NwaCegarLoop]: 1354 mSDtfsCounter, 0 mSDsluCounter, 4055 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5409 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:54:25,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 5409 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:54:25,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6233 states. [2022-11-20 10:54:26,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6233 to 6219. [2022-11-20 10:54:26,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6219 states, 4637 states have (on average 1.2915678240241535) internal successors, (5989), 4785 states have internal predecessors, (5989), 1195 states have call successors, (1195), 300 states have call predecessors, (1195), 386 states have return successors, (1863), 1175 states have call predecessors, (1863), 1191 states have call successors, (1863) [2022-11-20 10:54:26,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6219 states to 6219 states and 9047 transitions. [2022-11-20 10:54:26,462 INFO L78 Accepts]: Start accepts. Automaton has 6219 states and 9047 transitions. Word has length 130 [2022-11-20 10:54:26,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:54:26,465 INFO L495 AbstractCegarLoop]: Abstraction has 6219 states and 9047 transitions. [2022-11-20 10:54:26,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-20 10:54:26,465 INFO L276 IsEmpty]: Start isEmpty. Operand 6219 states and 9047 transitions. [2022-11-20 10:54:26,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-11-20 10:54:26,470 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:54:26,470 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:54:26,481 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae92b4f-a367-4d1e-9745-07391e72f2bb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-20 10:54:26,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae92b4f-a367-4d1e-9745-07391e72f2bb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-20 10:54:26,671 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:54:26,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:54:26,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1579318503, now seen corresponding path program 1 times [2022-11-20 10:54:26,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:54:26,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476675777] [2022-11-20 10:54:26,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:26,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:54:26,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:28,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 10:54:28,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:28,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 10:54:28,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:28,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 10:54:28,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:28,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:54:28,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:28,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:54:28,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:29,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 10:54:29,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:29,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-20 10:54:29,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:29,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-20 10:54:29,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:29,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-20 10:54:29,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:29,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-20 10:54:29,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:29,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-20 10:54:29,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:29,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-20 10:54:29,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:29,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-20 10:54:29,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:29,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-20 10:54:29,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:29,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 10:54:29,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:29,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-20 10:54:29,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:29,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-20 10:54:29,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:29,204 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-20 10:54:29,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:54:29,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476675777] [2022-11-20 10:54:29,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476675777] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:54:29,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1547335718] [2022-11-20 10:54:29,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:29,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:54:29,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae92b4f-a367-4d1e-9745-07391e72f2bb/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:54:29,207 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae92b4f-a367-4d1e-9745-07391e72f2bb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:54:29,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae92b4f-a367-4d1e-9745-07391e72f2bb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 10:54:30,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:30,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 2983 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 10:54:30,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:54:30,793 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-20 10:54:30,793 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:54:30,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1547335718] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:54:30,794 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:54:30,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 15 [2022-11-20 10:54:30,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212084117] [2022-11-20 10:54:30,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:54:30,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:54:30,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:54:30,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:54:30,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-11-20 10:54:30,795 INFO L87 Difference]: Start difference. First operand 6219 states and 9047 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-20 10:54:31,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:54:31,315 INFO L93 Difference]: Finished difference Result 12390 states and 18040 transitions. [2022-11-20 10:54:31,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:54:31,316 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 128 [2022-11-20 10:54:31,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:54:31,444 INFO L225 Difference]: With dead ends: 12390 [2022-11-20 10:54:31,444 INFO L226 Difference]: Without dead ends: 6219 [2022-11-20 10:54:31,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-11-20 10:54:31,471 INFO L413 NwaCegarLoop]: 1357 mSDtfsCounter, 22 mSDsluCounter, 2670 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 4027 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:54:31,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 4027 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:54:31,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6219 states. [2022-11-20 10:54:31,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6219 to 6219. [2022-11-20 10:54:31,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6219 states, 4637 states have (on average 1.290489540651283) internal successors, (5984), 4785 states have internal predecessors, (5984), 1195 states have call successors, (1195), 300 states have call predecessors, (1195), 386 states have return successors, (1863), 1175 states have call predecessors, (1863), 1191 states have call successors, (1863) [2022-11-20 10:54:31,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6219 states to 6219 states and 9042 transitions. [2022-11-20 10:54:31,904 INFO L78 Accepts]: Start accepts. Automaton has 6219 states and 9042 transitions. Word has length 128 [2022-11-20 10:54:31,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:54:31,904 INFO L495 AbstractCegarLoop]: Abstraction has 6219 states and 9042 transitions. [2022-11-20 10:54:31,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-20 10:54:31,905 INFO L276 IsEmpty]: Start isEmpty. Operand 6219 states and 9042 transitions. [2022-11-20 10:54:31,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-11-20 10:54:31,908 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:54:31,908 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:54:31,925 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae92b4f-a367-4d1e-9745-07391e72f2bb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-20 10:54:32,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae92b4f-a367-4d1e-9745-07391e72f2bb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-20 10:54:32,119 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:54:32,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:54:32,120 INFO L85 PathProgramCache]: Analyzing trace with hash -264564977, now seen corresponding path program 1 times [2022-11-20 10:54:32,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:54:32,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012057349] [2022-11-20 10:54:32,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:32,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:54:32,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:33,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 10:54:33,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:33,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-20 10:54:33,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:33,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:54:33,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:33,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:54:33,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:33,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-20 10:54:33,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:33,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-20 10:54:33,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:33,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-20 10:54:33,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:33,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-20 10:54:33,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:33,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-20 10:54:33,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:33,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-20 10:54:33,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:33,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-20 10:54:33,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:33,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-20 10:54:33,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:33,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-20 10:54:33,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:33,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 10:54:33,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:33,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-20 10:54:33,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:33,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-20 10:54:33,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:33,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-20 10:54:33,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:33,941 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-20 10:54:33,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:54:33,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012057349] [2022-11-20 10:54:33,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012057349] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:54:33,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2112381436] [2022-11-20 10:54:33,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:33,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:54:33,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae92b4f-a367-4d1e-9745-07391e72f2bb/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:54:33,943 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae92b4f-a367-4d1e-9745-07391e72f2bb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:54:33,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae92b4f-a367-4d1e-9745-07391e72f2bb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 10:54:35,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:35,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 3047 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 10:54:35,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:54:35,620 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-20 10:54:35,620 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:54:36,059 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-11-20 10:54:36,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2112381436] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 10:54:36,060 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:54:36,060 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [12, 6] total 18 [2022-11-20 10:54:36,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150793542] [2022-11-20 10:54:36,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:54:36,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:54:36,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:54:36,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:54:36,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2022-11-20 10:54:36,062 INFO L87 Difference]: Start difference. First operand 6219 states and 9042 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 5 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2022-11-20 10:54:39,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:54:39,382 INFO L93 Difference]: Finished difference Result 10394 states and 15580 transitions. [2022-11-20 10:54:39,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:54:39,383 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 5 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 130 [2022-11-20 10:54:39,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:54:39,433 INFO L225 Difference]: With dead ends: 10394 [2022-11-20 10:54:39,434 INFO L226 Difference]: Without dead ends: 10389 [2022-11-20 10:54:39,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 283 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2022-11-20 10:54:39,440 INFO L413 NwaCegarLoop]: 2112 mSDtfsCounter, 4110 mSDsluCounter, 712 mSDsCounter, 0 mSdLazyCounter, 648 mSolverCounterSat, 708 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4110 SdHoareTripleChecker+Valid, 2824 SdHoareTripleChecker+Invalid, 1356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 708 IncrementalHoareTripleChecker+Valid, 648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-20 10:54:39,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4110 Valid, 2824 Invalid, 1356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [708 Valid, 648 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-20 10:54:39,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10389 states. [2022-11-20 10:54:40,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10389 to 10363. [2022-11-20 10:54:40,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10363 states, 7721 states have (on average 1.2901178603807797) internal successors, (9961), 7967 states have internal predecessors, (9961), 1997 states have call successors, (1997), 494 states have call predecessors, (1997), 644 states have return successors, (3586), 1971 states have call predecessors, (3586), 1993 states have call successors, (3586) [2022-11-20 10:54:40,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10363 states to 10363 states and 15544 transitions. [2022-11-20 10:54:40,415 INFO L78 Accepts]: Start accepts. Automaton has 10363 states and 15544 transitions. Word has length 130 [2022-11-20 10:54:40,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:54:40,416 INFO L495 AbstractCegarLoop]: Abstraction has 10363 states and 15544 transitions. [2022-11-20 10:54:40,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 5 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2022-11-20 10:54:40,417 INFO L276 IsEmpty]: Start isEmpty. Operand 10363 states and 15544 transitions. [2022-11-20 10:54:40,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-11-20 10:54:40,420 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:54:40,420 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:54:40,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae92b4f-a367-4d1e-9745-07391e72f2bb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 10:54:40,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae92b4f-a367-4d1e-9745-07391e72f2bb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-20 10:54:40,633 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:54:40,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:54:40,633 INFO L85 PathProgramCache]: Analyzing trace with hash 495827447, now seen corresponding path program 1 times [2022-11-20 10:54:40,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:54:40,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785464696] [2022-11-20 10:54:40,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:40,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:54:40,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:41,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 10:54:41,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:41,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-20 10:54:41,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:42,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:54:42,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:42,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:54:42,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:42,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-20 10:54:42,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:42,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-20 10:54:42,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:42,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-20 10:54:42,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:42,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-20 10:54:42,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:42,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-20 10:54:42,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:42,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-20 10:54:42,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:42,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-20 10:54:42,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:42,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-20 10:54:42,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:42,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-20 10:54:42,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:42,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-20 10:54:42,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:42,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 10:54:42,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:42,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-20 10:54:42,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:42,530 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-20 10:54:42,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:54:42,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785464696] [2022-11-20 10:54:42,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785464696] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:54:42,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2050696976] [2022-11-20 10:54:42,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:42,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:54:42,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae92b4f-a367-4d1e-9745-07391e72f2bb/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:54:42,538 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae92b4f-a367-4d1e-9745-07391e72f2bb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:54:42,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae92b4f-a367-4d1e-9745-07391e72f2bb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 10:54:43,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:43,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 3138 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 10:54:43,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:54:43,929 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-20 10:54:43,929 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:54:43,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2050696976] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:54:43,929 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:54:43,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2022-11-20 10:54:43,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977935300] [2022-11-20 10:54:43,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:54:43,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:54:43,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:54:43,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:54:43,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2022-11-20 10:54:43,932 INFO L87 Difference]: Start difference. First operand 10363 states and 15544 transitions. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 3 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-20 10:54:45,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:54:45,119 INFO L93 Difference]: Finished difference Result 25588 states and 40410 transitions. [2022-11-20 10:54:45,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:54:45,120 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 3 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 147 [2022-11-20 10:54:45,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:54:45,199 INFO L225 Difference]: With dead ends: 25588 [2022-11-20 10:54:45,200 INFO L226 Difference]: Without dead ends: 15273 [2022-11-20 10:54:45,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2022-11-20 10:54:45,270 INFO L413 NwaCegarLoop]: 1993 mSDtfsCounter, 909 mSDsluCounter, 4848 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 967 SdHoareTripleChecker+Valid, 6841 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:54:45,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [967 Valid, 6841 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 10:54:45,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15273 states. [2022-11-20 10:54:46,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15273 to 10403. [2022-11-20 10:54:46,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10403 states, 7751 states have (on average 1.2889949683911752) internal successors, (9991), 7997 states have internal predecessors, (9991), 2007 states have call successors, (2007), 494 states have call predecessors, (2007), 644 states have return successors, (3596), 1981 states have call predecessors, (3596), 2003 states have call successors, (3596) [2022-11-20 10:54:46,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10403 states to 10403 states and 15594 transitions. [2022-11-20 10:54:46,207 INFO L78 Accepts]: Start accepts. Automaton has 10403 states and 15594 transitions. Word has length 147 [2022-11-20 10:54:46,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:54:46,208 INFO L495 AbstractCegarLoop]: Abstraction has 10403 states and 15594 transitions. [2022-11-20 10:54:46,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 3 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-20 10:54:46,208 INFO L276 IsEmpty]: Start isEmpty. Operand 10403 states and 15594 transitions. [2022-11-20 10:54:46,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-11-20 10:54:46,211 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:54:46,211 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:54:46,229 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae92b4f-a367-4d1e-9745-07391e72f2bb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-20 10:54:46,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae92b4f-a367-4d1e-9745-07391e72f2bb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-20 10:54:46,424 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:54:46,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:54:46,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1870867147, now seen corresponding path program 1 times [2022-11-20 10:54:46,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:54:46,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824405262] [2022-11-20 10:54:46,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:46,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:54:46,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:47,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 10:54:47,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:47,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-20 10:54:47,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:47,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:54:47,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:48,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:54:48,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:48,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-20 10:54:48,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:48,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-20 10:54:48,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:48,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-20 10:54:48,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:48,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-20 10:54:48,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:48,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-20 10:54:48,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:48,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-20 10:54:48,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:48,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-20 10:54:48,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:48,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-20 10:54:48,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:48,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-20 10:54:48,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:48,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-20 10:54:48,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:48,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 10:54:48,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:48,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-20 10:54:48,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:48,262 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-20 10:54:48,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:54:48,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824405262] [2022-11-20 10:54:48,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824405262] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:54:48,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1832509453] [2022-11-20 10:54:48,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:48,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:54:48,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae92b4f-a367-4d1e-9745-07391e72f2bb/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:54:48,264 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae92b4f-a367-4d1e-9745-07391e72f2bb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:54:48,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae92b4f-a367-4d1e-9745-07391e72f2bb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 10:54:49,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:49,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 3131 conjuncts, 49 conjunts are in the unsatisfiable core [2022-11-20 10:54:49,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:54:49,715 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-20 10:54:49,715 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:54:49,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1832509453] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:54:49,717 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:54:49,717 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [12] total 12 [2022-11-20 10:54:49,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065768035] [2022-11-20 10:54:49,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:54:49,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 10:54:49,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:54:49,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 10:54:49,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2022-11-20 10:54:49,719 INFO L87 Difference]: Start difference. First operand 10403 states and 15594 transitions. Second operand has 10 states, 10 states have (on average 10.1) internal successors, (101), 7 states have internal predecessors, (101), 2 states have call successors, (20), 2 states have call predecessors, (20), 5 states have return successors, (16), 5 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-20 10:54:50,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:54:50,540 INFO L93 Difference]: Finished difference Result 20736 states and 32045 transitions. [2022-11-20 10:54:50,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 10:54:50,540 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.1) internal successors, (101), 7 states have internal predecessors, (101), 2 states have call successors, (20), 2 states have call predecessors, (20), 5 states have return successors, (16), 5 states have call predecessors, (16), 2 states have call successors, (16) Word has length 147 [2022-11-20 10:54:50,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:54:50,604 INFO L225 Difference]: With dead ends: 20736 [2022-11-20 10:54:50,604 INFO L226 Difference]: Without dead ends: 10365 [2022-11-20 10:54:50,691 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 176 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-11-20 10:54:50,692 INFO L413 NwaCegarLoop]: 1356 mSDtfsCounter, 4 mSDsluCounter, 10808 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 12164 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:54:50,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 12164 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:54:50,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10365 states. [2022-11-20 10:54:51,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10365 to 10344. [2022-11-20 10:54:51,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10344 states, 7710 states have (on average 1.2858625162127109) internal successors, (9914), 7937 states have internal predecessors, (9914), 1987 states have call successors, (1987), 489 states have call predecessors, (1987), 646 states have return successors, (3586), 1987 states have call predecessors, (3586), 1983 states have call successors, (3586) [2022-11-20 10:54:51,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10344 states to 10344 states and 15487 transitions. [2022-11-20 10:54:51,746 INFO L78 Accepts]: Start accepts. Automaton has 10344 states and 15487 transitions. Word has length 147 [2022-11-20 10:54:51,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:54:51,746 INFO L495 AbstractCegarLoop]: Abstraction has 10344 states and 15487 transitions. [2022-11-20 10:54:51,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.1) internal successors, (101), 7 states have internal predecessors, (101), 2 states have call successors, (20), 2 states have call predecessors, (20), 5 states have return successors, (16), 5 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-20 10:54:51,747 INFO L276 IsEmpty]: Start isEmpty. Operand 10344 states and 15487 transitions. [2022-11-20 10:54:51,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-11-20 10:54:51,750 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:54:51,751 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:54:51,765 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae92b4f-a367-4d1e-9745-07391e72f2bb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 10:54:51,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae92b4f-a367-4d1e-9745-07391e72f2bb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:54:51,965 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:54:51,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:54:51,965 INFO L85 PathProgramCache]: Analyzing trace with hash -644621356, now seen corresponding path program 1 times [2022-11-20 10:54:51,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:54:51,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450733319] [2022-11-20 10:54:51,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:51,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:54:52,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:52,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 10:54:52,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:52,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-20 10:54:52,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:52,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:54:52,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:52,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:54:52,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:52,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-20 10:54:52,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:52,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-20 10:54:52,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:52,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-20 10:54:52,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:52,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-20 10:54:52,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:52,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-20 10:54:52,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:52,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-20 10:54:52,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:52,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-20 10:54:52,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:52,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-20 10:54:52,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:52,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-20 10:54:52,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:52,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-20 10:54:52,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:52,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 10:54:52,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:52,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-20 10:54:52,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:52,974 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-20 10:54:52,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:54:52,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450733319] [2022-11-20 10:54:52,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450733319] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:54:52,975 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:54:52,975 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:54:52,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120362832] [2022-11-20 10:54:52,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:54:52,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:54:52,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:54:52,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:54:52,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:54:52,976 INFO L87 Difference]: Start difference. First operand 10344 states and 15487 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 3 states have internal predecessors, (99), 3 states have call successors, (20), 4 states have call predecessors, (20), 1 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-20 10:54:58,832 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 10:55:01,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:55:01,168 INFO L93 Difference]: Finished difference Result 24068 states and 38569 transitions. [2022-11-20 10:55:01,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:55:01,169 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 3 states have internal predecessors, (99), 3 states have call successors, (20), 4 states have call predecessors, (20), 1 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 147 [2022-11-20 10:55:01,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:55:01,261 INFO L225 Difference]: With dead ends: 24068 [2022-11-20 10:55:01,261 INFO L226 Difference]: Without dead ends: 13772 [2022-11-20 10:55:01,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:55:01,351 INFO L413 NwaCegarLoop]: 1449 mSDtfsCounter, 768 mSDsluCounter, 2578 mSDsCounter, 0 mSdLazyCounter, 1429 mSolverCounterSat, 238 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 881 SdHoareTripleChecker+Valid, 4027 SdHoareTripleChecker+Invalid, 1668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 238 IncrementalHoareTripleChecker+Valid, 1429 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:55:01,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [881 Valid, 4027 Invalid, 1668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [238 Valid, 1429 Invalid, 1 Unknown, 0 Unchecked, 7.1s Time] [2022-11-20 10:55:01,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13772 states. [2022-11-20 10:55:02,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13772 to 10616. [2022-11-20 10:55:02,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10616 states, 7886 states have (on average 1.2832868374334263) internal successors, (10120), 8121 states have internal predecessors, (10120), 2061 states have call successors, (2061), 489 states have call predecessors, (2061), 668 states have return successors, (3892), 2075 states have call predecessors, (3892), 2057 states have call successors, (3892) [2022-11-20 10:55:02,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10616 states to 10616 states and 16073 transitions. [2022-11-20 10:55:02,428 INFO L78 Accepts]: Start accepts. Automaton has 10616 states and 16073 transitions. Word has length 147 [2022-11-20 10:55:02,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:55:02,428 INFO L495 AbstractCegarLoop]: Abstraction has 10616 states and 16073 transitions. [2022-11-20 10:55:02,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 3 states have internal predecessors, (99), 3 states have call successors, (20), 4 states have call predecessors, (20), 1 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-20 10:55:02,429 INFO L276 IsEmpty]: Start isEmpty. Operand 10616 states and 16073 transitions. [2022-11-20 10:55:02,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-11-20 10:55:02,430 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:55:02,431 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:55:02,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 10:55:02,431 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:55:02,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:55:02,431 INFO L85 PathProgramCache]: Analyzing trace with hash 846054232, now seen corresponding path program 1 times [2022-11-20 10:55:02,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:55:02,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267935074] [2022-11-20 10:55:02,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:55:02,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:55:02,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:03,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 10:55:03,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:03,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-20 10:55:03,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:03,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:55:03,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:03,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:55:03,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:03,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-20 10:55:03,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:03,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-20 10:55:03,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:03,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-20 10:55:03,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:03,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-20 10:55:03,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:03,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-20 10:55:03,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:03,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-20 10:55:03,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:03,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-20 10:55:03,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:03,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-20 10:55:03,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:03,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-20 10:55:03,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:03,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-20 10:55:03,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:03,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 10:55:03,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:03,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-20 10:55:03,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:03,885 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-20 10:55:03,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:55:03,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267935074] [2022-11-20 10:55:03,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267935074] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:55:03,886 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:55:03,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 10:55:03,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705259895] [2022-11-20 10:55:03,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:55:03,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:55:03,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:55:03,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:55:03,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:55:03,888 INFO L87 Difference]: Start difference. First operand 10616 states and 16073 transitions. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 5 states have internal predecessors, (99), 3 states have call successors, (20), 4 states have call predecessors, (20), 1 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-20 10:55:09,427 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 10:55:12,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:55:12,367 INFO L93 Difference]: Finished difference Result 24372 states and 39165 transitions. [2022-11-20 10:55:12,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 10:55:12,367 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 5 states have internal predecessors, (99), 3 states have call successors, (20), 4 states have call predecessors, (20), 1 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 147 [2022-11-20 10:55:12,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:55:12,455 INFO L225 Difference]: With dead ends: 24372 [2022-11-20 10:55:12,455 INFO L226 Difference]: Without dead ends: 13804 [2022-11-20 10:55:12,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-20 10:55:12,542 INFO L413 NwaCegarLoop]: 1459 mSDtfsCounter, 1382 mSDsluCounter, 4225 mSDsCounter, 0 mSdLazyCounter, 2003 mSolverCounterSat, 638 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1428 SdHoareTripleChecker+Valid, 5684 SdHoareTripleChecker+Invalid, 2642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 638 IncrementalHoareTripleChecker+Valid, 2003 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:55:12,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1428 Valid, 5684 Invalid, 2642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [638 Valid, 2003 Invalid, 1 Unknown, 0 Unchecked, 7.2s Time] [2022-11-20 10:55:12,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13804 states. [2022-11-20 10:55:13,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13804 to 10646. [2022-11-20 10:55:13,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10646 states, 7916 states have (on average 1.2822132390096008) internal successors, (10150), 8151 states have internal predecessors, (10150), 2061 states have call successors, (2061), 489 states have call predecessors, (2061), 668 states have return successors, (3892), 2075 states have call predecessors, (3892), 2057 states have call successors, (3892) [2022-11-20 10:55:13,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10646 states to 10646 states and 16103 transitions. [2022-11-20 10:55:13,646 INFO L78 Accepts]: Start accepts. Automaton has 10646 states and 16103 transitions. Word has length 147 [2022-11-20 10:55:13,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:55:13,647 INFO L495 AbstractCegarLoop]: Abstraction has 10646 states and 16103 transitions. [2022-11-20 10:55:13,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 5 states have internal predecessors, (99), 3 states have call successors, (20), 4 states have call predecessors, (20), 1 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-20 10:55:13,647 INFO L276 IsEmpty]: Start isEmpty. Operand 10646 states and 16103 transitions. [2022-11-20 10:55:13,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-11-20 10:55:13,650 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:55:13,651 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:55:13,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-20 10:55:13,651 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:55:13,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:55:13,651 INFO L85 PathProgramCache]: Analyzing trace with hash -483021765, now seen corresponding path program 1 times [2022-11-20 10:55:13,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:55:13,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556706955] [2022-11-20 10:55:13,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:55:13,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:55:13,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:14,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 10:55:14,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:14,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-20 10:55:14,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:14,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:55:14,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:14,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:55:14,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:14,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-20 10:55:14,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:14,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-20 10:55:14,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:14,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-20 10:55:14,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:14,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-20 10:55:14,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:14,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-20 10:55:14,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:14,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-20 10:55:14,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:14,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-20 10:55:14,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:14,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-20 10:55:14,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:14,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-20 10:55:14,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:14,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-11-20 10:55:14,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:14,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 10:55:14,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:14,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-20 10:55:14,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:14,451 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-20 10:55:14,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:55:14,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556706955] [2022-11-20 10:55:14,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556706955] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:55:14,452 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:55:14,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 10:55:14,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496543616] [2022-11-20 10:55:14,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:55:14,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:55:14,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:55:14,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:55:14,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:55:14,455 INFO L87 Difference]: Start difference. First operand 10646 states and 16103 transitions. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 5 states have internal predecessors, (110), 3 states have call successors, (20), 4 states have call predecessors, (20), 1 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-20 10:55:20,911 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 10:55:24,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:55:24,099 INFO L93 Difference]: Finished difference Result 26772 states and 43264 transitions. [2022-11-20 10:55:24,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 10:55:24,100 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 5 states have internal predecessors, (110), 3 states have call successors, (20), 4 states have call predecessors, (20), 1 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 158 [2022-11-20 10:55:24,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:55:24,191 INFO L225 Difference]: With dead ends: 26772 [2022-11-20 10:55:24,191 INFO L226 Difference]: Without dead ends: 16174 [2022-11-20 10:55:24,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-20 10:55:24,256 INFO L413 NwaCegarLoop]: 1621 mSDtfsCounter, 1767 mSDsluCounter, 4594 mSDsCounter, 0 mSdLazyCounter, 2102 mSolverCounterSat, 705 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1874 SdHoareTripleChecker+Valid, 6215 SdHoareTripleChecker+Invalid, 2808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 705 IncrementalHoareTripleChecker+Valid, 2102 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:55:24,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1874 Valid, 6215 Invalid, 2808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [705 Valid, 2102 Invalid, 1 Unknown, 0 Unchecked, 8.0s Time] [2022-11-20 10:55:24,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16174 states. [2022-11-20 10:55:25,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16174 to 10676. [2022-11-20 10:55:25,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10676 states, 7946 states have (on average 1.281147747294236) internal successors, (10180), 8181 states have internal predecessors, (10180), 2061 states have call successors, (2061), 489 states have call predecessors, (2061), 668 states have return successors, (3892), 2075 states have call predecessors, (3892), 2057 states have call successors, (3892) [2022-11-20 10:55:25,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10676 states to 10676 states and 16133 transitions. [2022-11-20 10:55:25,185 INFO L78 Accepts]: Start accepts. Automaton has 10676 states and 16133 transitions. Word has length 158 [2022-11-20 10:55:25,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:55:25,185 INFO L495 AbstractCegarLoop]: Abstraction has 10676 states and 16133 transitions. [2022-11-20 10:55:25,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 5 states have internal predecessors, (110), 3 states have call successors, (20), 4 states have call predecessors, (20), 1 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-20 10:55:25,185 INFO L276 IsEmpty]: Start isEmpty. Operand 10676 states and 16133 transitions. [2022-11-20 10:55:25,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-11-20 10:55:25,190 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:55:25,190 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:55:25,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-20 10:55:25,190 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:55:25,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:55:25,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1950436359, now seen corresponding path program 1 times [2022-11-20 10:55:25,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:55:25,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859294035] [2022-11-20 10:55:25,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:55:25,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:55:25,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:25,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 10:55:25,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:25,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-20 10:55:25,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:25,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:55:25,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:25,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:55:25,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:25,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-20 10:55:25,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:25,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-20 10:55:25,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:25,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-20 10:55:25,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:25,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-20 10:55:25,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:25,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-20 10:55:25,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:25,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-20 10:55:25,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:25,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-20 10:55:25,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:25,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-20 10:55:25,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:25,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-20 10:55:25,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:25,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-11-20 10:55:25,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:25,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 10:55:25,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:25,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-20 10:55:25,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:25,706 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-20 10:55:25,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:55:25,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859294035] [2022-11-20 10:55:25,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859294035] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:55:25,707 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:55:25,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:55:25,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042994853] [2022-11-20 10:55:25,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:55:25,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:55:25,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:55:25,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:55:25,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:55:25,709 INFO L87 Difference]: Start difference. First operand 10676 states and 16133 transitions. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 3 states have internal predecessors, (111), 3 states have call successors, (20), 4 states have call predecessors, (20), 1 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-20 10:55:31,838 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 10:55:34,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:55:34,814 INFO L93 Difference]: Finished difference Result 24672 states and 39583 transitions. [2022-11-20 10:55:34,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:55:34,815 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 3 states have internal predecessors, (111), 3 states have call successors, (20), 4 states have call predecessors, (20), 1 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 159 [2022-11-20 10:55:34,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:55:34,888 INFO L225 Difference]: With dead ends: 24672 [2022-11-20 10:55:34,888 INFO L226 Difference]: Without dead ends: 14044 [2022-11-20 10:55:34,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:55:34,953 INFO L413 NwaCegarLoop]: 1486 mSDtfsCounter, 742 mSDsluCounter, 2683 mSDsCounter, 0 mSdLazyCounter, 1441 mSolverCounterSat, 237 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 854 SdHoareTripleChecker+Valid, 4169 SdHoareTripleChecker+Invalid, 1679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 237 IncrementalHoareTripleChecker+Valid, 1441 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2022-11-20 10:55:34,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [854 Valid, 4169 Invalid, 1679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [237 Valid, 1441 Invalid, 1 Unknown, 0 Unchecked, 7.5s Time] [2022-11-20 10:55:34,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14044 states. [2022-11-20 10:55:35,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14044 to 10686. [2022-11-20 10:55:35,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10686 states, 7956 states have (on average 1.280794369029663) internal successors, (10190), 8191 states have internal predecessors, (10190), 2061 states have call successors, (2061), 489 states have call predecessors, (2061), 668 states have return successors, (3892), 2075 states have call predecessors, (3892), 2057 states have call successors, (3892) [2022-11-20 10:55:36,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10686 states to 10686 states and 16143 transitions. [2022-11-20 10:55:36,067 INFO L78 Accepts]: Start accepts. Automaton has 10686 states and 16143 transitions. Word has length 159 [2022-11-20 10:55:36,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:55:36,067 INFO L495 AbstractCegarLoop]: Abstraction has 10686 states and 16143 transitions. [2022-11-20 10:55:36,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 3 states have internal predecessors, (111), 3 states have call successors, (20), 4 states have call predecessors, (20), 1 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-20 10:55:36,067 INFO L276 IsEmpty]: Start isEmpty. Operand 10686 states and 16143 transitions. [2022-11-20 10:55:36,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-11-20 10:55:36,072 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:55:36,073 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:55:36,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-20 10:55:36,073 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:55:36,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:55:36,074 INFO L85 PathProgramCache]: Analyzing trace with hash -22163657, now seen corresponding path program 1 times [2022-11-20 10:55:36,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:55:36,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956305913] [2022-11-20 10:55:36,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:55:36,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:55:36,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:38,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 10:55:38,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:38,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-20 10:55:38,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:38,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:55:38,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:38,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:55:38,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:38,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-20 10:55:38,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:38,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-20 10:55:38,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:38,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-20 10:55:38,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:38,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-20 10:55:38,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:38,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-20 10:55:38,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:38,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-20 10:55:38,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:38,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-20 10:55:38,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:38,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-20 10:55:38,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:38,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-20 10:55:38,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:39,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-11-20 10:55:39,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:39,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 10:55:39,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:39,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-20 10:55:39,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:39,077 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-20 10:55:39,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:55:39,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956305913] [2022-11-20 10:55:39,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956305913] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:55:39,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712751949] [2022-11-20 10:55:39,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:55:39,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:55:39,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae92b4f-a367-4d1e-9745-07391e72f2bb/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:55:39,082 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae92b4f-a367-4d1e-9745-07391e72f2bb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:55:39,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae92b4f-a367-4d1e-9745-07391e72f2bb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 10:55:40,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:40,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 3259 conjuncts, 42 conjunts are in the unsatisfiable core [2022-11-20 10:55:40,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:55:41,238 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 10:55:41,239 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-20 10:55:41,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:55:41,488 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-20 10:55:41,496 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-20 10:55:41,496 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:55:41,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [712751949] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:55:41,496 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:55:41,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [18] total 28 [2022-11-20 10:55:41,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346052536] [2022-11-20 10:55:41,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:55:41,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 10:55:41,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:55:41,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 10:55:41,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=681, Unknown=0, NotChecked=0, Total=756 [2022-11-20 10:55:41,499 INFO L87 Difference]: Start difference. First operand 10686 states and 16143 transitions. Second operand has 14 states, 14 states have (on average 8.071428571428571) internal successors, (113), 10 states have internal predecessors, (113), 4 states have call successors, (20), 4 states have call predecessors, (20), 6 states have return successors, (16), 6 states have call predecessors, (16), 4 states have call successors, (16) [2022-11-20 10:55:47,889 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 10:55:49,898 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 10:55:51,900 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 [] [2022-11-20 10:55:53,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:55:53,441 INFO L93 Difference]: Finished difference Result 21348 states and 32268 transitions. [2022-11-20 10:55:53,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 10:55:53,443 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.071428571428571) internal successors, (113), 10 states have internal predecessors, (113), 4 states have call successors, (20), 4 states have call predecessors, (20), 6 states have return successors, (16), 6 states have call predecessors, (16), 4 states have call successors, (16) Word has length 159 [2022-11-20 10:55:53,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:55:53,505 INFO L225 Difference]: With dead ends: 21348 [2022-11-20 10:55:53,505 INFO L226 Difference]: Without dead ends: 10710 [2022-11-20 10:55:53,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=140, Invalid=1266, Unknown=0, NotChecked=0, Total=1406 [2022-11-20 10:55:53,569 INFO L413 NwaCegarLoop]: 1332 mSDtfsCounter, 103 mSDsluCounter, 4967 mSDsCounter, 0 mSdLazyCounter, 994 mSolverCounterSat, 49 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 6299 SdHoareTripleChecker+Invalid, 1046 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 994 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2022-11-20 10:55:53,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 6299 Invalid, 1046 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 994 Invalid, 3 Unknown, 0 Unchecked, 10.8s Time] [2022-11-20 10:55:53,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10710 states. [2022-11-20 10:55:54,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10710 to 10705. [2022-11-20 10:55:54,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10705 states, 7970 states have (on average 1.2806775407779172) internal successors, (10207), 8205 states have internal predecessors, (10207), 2064 states have call successors, (2064), 491 states have call predecessors, (2064), 670 states have return successors, (3895), 2078 states have call predecessors, (3895), 2060 states have call successors, (3895) [2022-11-20 10:55:54,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10705 states to 10705 states and 16166 transitions. [2022-11-20 10:55:54,608 INFO L78 Accepts]: Start accepts. Automaton has 10705 states and 16166 transitions. Word has length 159 [2022-11-20 10:55:54,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:55:54,609 INFO L495 AbstractCegarLoop]: Abstraction has 10705 states and 16166 transitions. [2022-11-20 10:55:54,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.071428571428571) internal successors, (113), 10 states have internal predecessors, (113), 4 states have call successors, (20), 4 states have call predecessors, (20), 6 states have return successors, (16), 6 states have call predecessors, (16), 4 states have call successors, (16) [2022-11-20 10:55:54,609 INFO L276 IsEmpty]: Start isEmpty. Operand 10705 states and 16166 transitions. [2022-11-20 10:55:54,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-11-20 10:55:54,614 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:55:54,614 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:55:54,634 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae92b4f-a367-4d1e-9745-07391e72f2bb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-20 10:55:54,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae92b4f-a367-4d1e-9745-07391e72f2bb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:55:54,829 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:55:54,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:55:54,829 INFO L85 PathProgramCache]: Analyzing trace with hash 2130943161, now seen corresponding path program 1 times [2022-11-20 10:55:54,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:55:54,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751679350] [2022-11-20 10:55:54,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:55:54,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:55:54,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:57,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 10:55:57,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:57,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-20 10:55:57,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:57,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:55:57,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:58,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:55:58,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:58,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-20 10:55:58,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:58,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-20 10:55:58,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:58,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-20 10:55:58,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:58,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-20 10:55:58,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:58,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-20 10:55:58,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:58,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-20 10:55:58,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:58,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-20 10:55:58,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:58,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-20 10:55:58,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:58,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-20 10:55:58,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:58,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-11-20 10:55:58,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:58,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 10:55:58,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:58,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-20 10:55:58,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:58,387 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-20 10:55:58,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:55:58,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751679350] [2022-11-20 10:55:58,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751679350] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:55:58,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [132480300] [2022-11-20 10:55:58,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:55:58,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:55:58,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae92b4f-a367-4d1e-9745-07391e72f2bb/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:55:58,388 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae92b4f-a367-4d1e-9745-07391e72f2bb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:55:58,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae92b4f-a367-4d1e-9745-07391e72f2bb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-20 10:55:59,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:59,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 3260 conjuncts, 50 conjunts are in the unsatisfiable core [2022-11-20 10:55:59,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:56:00,350 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 10:56:00,351 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-20 10:56:00,732 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 10:56:00,767 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 10:56:00,818 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 10:56:00,864 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 10:56:00,910 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 10:56:00,931 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-20 10:56:00,987 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-20 10:56:00,987 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:56:00,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [132480300] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:56:00,988 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:56:00,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [19] total 34 [2022-11-20 10:56:00,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781335355] [2022-11-20 10:56:00,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:56:00,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-20 10:56:00,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:56:00,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-20 10:56:00,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=1028, Unknown=0, NotChecked=0, Total=1122 [2022-11-20 10:56:00,992 INFO L87 Difference]: Start difference. First operand 10705 states and 16166 transitions. Second operand has 17 states, 17 states have (on average 6.647058823529412) internal successors, (113), 13 states have internal predecessors, (113), 5 states have call successors, (20), 5 states have call predecessors, (20), 7 states have return successors, (16), 7 states have call predecessors, (16), 5 states have call successors, (16) [2022-11-20 10:56:25,984 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 10:56:48,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:56:48,648 INFO L93 Difference]: Finished difference Result 55755 states and 90247 transitions. [2022-11-20 10:56:48,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-11-20 10:56:48,648 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 6.647058823529412) internal successors, (113), 13 states have internal predecessors, (113), 5 states have call successors, (20), 5 states have call predecessors, (20), 7 states have return successors, (16), 7 states have call predecessors, (16), 5 states have call successors, (16) Word has length 159 [2022-11-20 10:56:48,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:56:48,867 INFO L225 Difference]: With dead ends: 55755 [2022-11-20 10:56:48,867 INFO L226 Difference]: Without dead ends: 45117 [2022-11-20 10:56:48,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1038 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=413, Invalid=4417, Unknown=0, NotChecked=0, Total=4830 [2022-11-20 10:56:48,938 INFO L413 NwaCegarLoop]: 1696 mSDtfsCounter, 3932 mSDsluCounter, 15470 mSDsCounter, 0 mSdLazyCounter, 19840 mSolverCounterSat, 1238 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4216 SdHoareTripleChecker+Valid, 17166 SdHoareTripleChecker+Invalid, 21079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1238 IncrementalHoareTripleChecker+Valid, 19840 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41.7s IncrementalHoareTripleChecker+Time [2022-11-20 10:56:48,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4216 Valid, 17166 Invalid, 21079 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1238 Valid, 19840 Invalid, 1 Unknown, 0 Unchecked, 41.7s Time] [2022-11-20 10:56:48,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45117 states. [2022-11-20 10:56:52,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45117 to 41431. [2022-11-20 10:56:52,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41431 states, 31208 states have (on average 1.281658549089977) internal successors, (39998), 32214 states have internal predecessors, (39998), 7338 states have call successors, (7338), 2096 states have call predecessors, (7338), 2884 states have return successors, (17454), 7316 states have call predecessors, (17454), 7334 states have call successors, (17454) [2022-11-20 10:56:53,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41431 states to 41431 states and 64790 transitions. [2022-11-20 10:56:53,284 INFO L78 Accepts]: Start accepts. Automaton has 41431 states and 64790 transitions. Word has length 159 [2022-11-20 10:56:53,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:56:53,285 INFO L495 AbstractCegarLoop]: Abstraction has 41431 states and 64790 transitions. [2022-11-20 10:56:53,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.647058823529412) internal successors, (113), 13 states have internal predecessors, (113), 5 states have call successors, (20), 5 states have call predecessors, (20), 7 states have return successors, (16), 7 states have call predecessors, (16), 5 states have call successors, (16) [2022-11-20 10:56:53,286 INFO L276 IsEmpty]: Start isEmpty. Operand 41431 states and 64790 transitions. [2022-11-20 10:56:53,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-11-20 10:56:53,292 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:56:53,292 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:56:53,309 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae92b4f-a367-4d1e-9745-07391e72f2bb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-11-20 10:56:53,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae92b4f-a367-4d1e-9745-07391e72f2bb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:56:53,505 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:56:53,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:56:53,505 INFO L85 PathProgramCache]: Analyzing trace with hash -1210083977, now seen corresponding path program 1 times [2022-11-20 10:56:53,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:56:53,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355306763] [2022-11-20 10:56:53,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:53,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:56:53,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:56,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 10:56:56,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:56,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-20 10:56:56,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:56,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:56:56,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:56,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:56:56,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:56,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-20 10:56:56,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:56,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-20 10:56:56,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:56,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-20 10:56:56,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:56,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-20 10:56:56,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:56,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-20 10:56:56,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:56,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-20 10:56:56,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:56,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-20 10:56:56,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:56,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-20 10:56:56,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:56,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-20 10:56:56,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:56,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-11-20 10:56:56,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:56,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 10:56:56,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:56,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-20 10:56:56,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:56,863 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-20 10:56:56,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:56:56,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355306763] [2022-11-20 10:56:56,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355306763] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:56:56,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [831844507] [2022-11-20 10:56:56,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:56,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:56:56,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae92b4f-a367-4d1e-9745-07391e72f2bb/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:56:56,865 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae92b4f-a367-4d1e-9745-07391e72f2bb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:56:56,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae92b4f-a367-4d1e-9745-07391e72f2bb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-20 10:56:58,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:58,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 3261 conjuncts, 50 conjunts are in the unsatisfiable core [2022-11-20 10:56:58,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:56:58,958 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 10:56:58,959 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-20 10:56:59,607 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 10:56:59,719 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-20 10:56:59,724 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-20 10:56:59,724 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:57:00,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [831844507] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:57:00,045 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:57:00,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 17] total 36 [2022-11-20 10:57:00,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593267820] [2022-11-20 10:57:00,046 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:57:00,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-20 10:57:00,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:57:00,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-20 10:57:00,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=1207, Unknown=6, NotChecked=0, Total=1332 [2022-11-20 10:57:00,048 INFO L87 Difference]: Start difference. First operand 41431 states and 64790 transitions. Second operand has 36 states, 36 states have (on average 5.972222222222222) internal successors, (215), 27 states have internal predecessors, (215), 14 states have call successors, (38), 10 states have call predecessors, (38), 10 states have return successors, (32), 16 states have call predecessors, (32), 13 states have call successors, (32) [2022-11-20 10:57:36,984 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 10:58:17,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:58:17,047 INFO L93 Difference]: Finished difference Result 113662 states and 204241 transitions. [2022-11-20 10:58:17,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2022-11-20 10:58:17,047 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.972222222222222) internal successors, (215), 27 states have internal predecessors, (215), 14 states have call successors, (38), 10 states have call predecessors, (38), 10 states have return successors, (32), 16 states have call predecessors, (32), 13 states have call successors, (32) Word has length 159 [2022-11-20 10:58:17,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:58:17,696 INFO L225 Difference]: With dead ends: 113662 [2022-11-20 10:58:17,696 INFO L226 Difference]: Without dead ends: 72363 [2022-11-20 10:58:17,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4007 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=1135, Invalid=12199, Unknown=6, NotChecked=0, Total=13340 [2022-11-20 10:58:17,918 INFO L413 NwaCegarLoop]: 1485 mSDtfsCounter, 12942 mSDsluCounter, 21059 mSDsCounter, 0 mSdLazyCounter, 36868 mSolverCounterSat, 5697 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 60.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13189 SdHoareTripleChecker+Valid, 22544 SdHoareTripleChecker+Invalid, 42566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 5697 IncrementalHoareTripleChecker+Valid, 36868 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 65.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:58:17,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13189 Valid, 22544 Invalid, 42566 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [5697 Valid, 36868 Invalid, 1 Unknown, 0 Unchecked, 65.2s Time] [2022-11-20 10:58:17,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72363 states. [2022-11-20 10:58:24,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72363 to 63957. [2022-11-20 10:58:24,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63957 states, 48554 states have (on average 1.2817687523170078) internal successors, (62235), 50072 states have internal predecessors, (62235), 10532 states have call successors, (10532), 3511 states have call predecessors, (10532), 4870 states have return successors, (34204), 10661 states have call predecessors, (34204), 10528 states have call successors, (34204) [2022-11-20 10:58:25,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63957 states to 63957 states and 106971 transitions. [2022-11-20 10:58:25,037 INFO L78 Accepts]: Start accepts. Automaton has 63957 states and 106971 transitions. Word has length 159 [2022-11-20 10:58:25,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:58:25,038 INFO L495 AbstractCegarLoop]: Abstraction has 63957 states and 106971 transitions. [2022-11-20 10:58:25,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 5.972222222222222) internal successors, (215), 27 states have internal predecessors, (215), 14 states have call successors, (38), 10 states have call predecessors, (38), 10 states have return successors, (32), 16 states have call predecessors, (32), 13 states have call successors, (32) [2022-11-20 10:58:25,038 INFO L276 IsEmpty]: Start isEmpty. Operand 63957 states and 106971 transitions. [2022-11-20 10:58:25,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-11-20 10:58:25,046 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:58:25,046 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:58:25,060 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae92b4f-a367-4d1e-9745-07391e72f2bb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-20 10:58:25,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae92b4f-a367-4d1e-9745-07391e72f2bb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-11-20 10:58:25,260 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:58:25,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:58:25,261 INFO L85 PathProgramCache]: Analyzing trace with hash 58235728, now seen corresponding path program 1 times [2022-11-20 10:58:25,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:58:25,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025512912] [2022-11-20 10:58:25,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:58:25,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:58:25,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:27,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 10:58:27,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:27,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-20 10:58:27,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:28,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:58:28,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:28,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:58:28,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:28,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-20 10:58:28,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:28,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-20 10:58:28,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:28,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-20 10:58:28,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:28,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-20 10:58:28,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:28,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-20 10:58:28,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:28,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-20 10:58:28,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:28,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-20 10:58:28,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:28,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-20 10:58:28,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:28,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-20 10:58:28,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:28,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-20 10:58:28,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:28,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 10:58:28,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:28,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-20 10:58:28,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:28,471 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-20 10:58:28,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:58:28,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025512912] [2022-11-20 10:58:28,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025512912] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:58:28,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [790117902] [2022-11-20 10:58:28,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:58:28,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:58:28,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae92b4f-a367-4d1e-9745-07391e72f2bb/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:58:28,474 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae92b4f-a367-4d1e-9745-07391e72f2bb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:58:28,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dae92b4f-a367-4d1e-9745-07391e72f2bb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-20 10:58:30,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:30,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 3276 conjuncts, 56 conjunts are in the unsatisfiable core [2022-11-20 10:58:30,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:58:30,577 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 10:58:30,578 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-20 10:58:31,293 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 10:58:31,379 INFO L321 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2022-11-20 10:58:31,379 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2022-11-20 10:58:31,611 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-20 10:58:31,616 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-20 10:58:31,616 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:58:31,980 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_14331 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ttusb_dec_probe_ttusb_dec_alloc_iso_urbs_~dec#1.base| v_ArrVal_14331) |c_~#debug~0.base|) |c_~#debug~0.offset|) 0)) is different from false [2022-11-20 10:58:32,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [790117902] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:58:32,080 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:58:32,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 18] total 38 [2022-11-20 10:58:32,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601273063] [2022-11-20 10:58:32,080 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:58:32,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-11-20 10:58:32,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:58:32,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-11-20 10:58:32,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=1361, Unknown=1, NotChecked=74, Total=1560 [2022-11-20 10:58:32,083 INFO L87 Difference]: Start difference. First operand 63957 states and 106971 transitions. Second operand has 38 states, 38 states have (on average 5.315789473684211) internal successors, (202), 30 states have internal predecessors, (202), 14 states have call successors, (37), 9 states have call predecessors, (37), 10 states have return successors, (32), 16 states have call predecessors, (32), 13 states have call successors, (32) [2022-11-20 10:59:11,685 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 10:59:58,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:59:58,932 INFO L93 Difference]: Finished difference Result 161856 states and 319993 transitions. [2022-11-20 10:59:58,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-11-20 10:59:58,933 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 5.315789473684211) internal successors, (202), 30 states have internal predecessors, (202), 14 states have call successors, (37), 9 states have call predecessors, (37), 10 states have return successors, (32), 16 states have call predecessors, (32), 13 states have call successors, (32) Word has length 160 [2022-11-20 10:59:58,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:00:00,210 INFO L225 Difference]: With dead ends: 161856 [2022-11-20 11:00:00,210 INFO L226 Difference]: Without dead ends: 98356 [2022-11-20 11:00:00,931 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 247 SyntacticMatches, 2 SemanticMatches, 120 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 4590 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=1206, Invalid=13317, Unknown=1, NotChecked=238, Total=14762 [2022-11-20 11:00:00,931 INFO L413 NwaCegarLoop]: 1586 mSDtfsCounter, 10574 mSDsluCounter, 22812 mSDsCounter, 0 mSdLazyCounter, 36962 mSolverCounterSat, 4584 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 65.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10807 SdHoareTripleChecker+Valid, 24398 SdHoareTripleChecker+Invalid, 41547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 4584 IncrementalHoareTripleChecker+Valid, 36962 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 70.7s IncrementalHoareTripleChecker+Time [2022-11-20 11:00:00,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10807 Valid, 24398 Invalid, 41547 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [4584 Valid, 36962 Invalid, 1 Unknown, 0 Unchecked, 70.7s Time] [2022-11-20 11:00:00,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98356 states.