./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-usb-serial-whiteheat.ko.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 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_8f91e1a1-978f-490f-ad8e-35b19890a321/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f91e1a1-978f-490f-ad8e-35b19890a321/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f91e1a1-978f-490f-ad8e-35b19890a321/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f91e1a1-978f-490f-ad8e-35b19890a321/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-usb-serial-whiteheat.ko.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f91e1a1-978f-490f-ad8e-35b19890a321/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f91e1a1-978f-490f-ad8e-35b19890a321/bin/utaipan-verify-mE87zJ7Ire --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 1b2bc647ca8745ce6966563490eaffac57a1a11e1ae3ccf6c64fee22f81541d7 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 20:33:17,827 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:33:17,900 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f91e1a1-978f-490f-ad8e-35b19890a321/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-23 20:33:17,906 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 20:33:17,907 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 20:33:17,935 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:33:17,936 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 20:33:17,936 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 20:33:17,937 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 20:33:17,938 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 20:33:17,939 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 20:33:17,939 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 20:33:17,940 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 20:33:17,941 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 20:33:17,941 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 20:33:17,942 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 20:33:17,943 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 20:33:17,943 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 20:33:17,944 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 20:33:17,945 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 20:33:17,946 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 20:33:17,947 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 20:33:17,948 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:33:17,948 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 20:33:17,949 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 20:33:17,950 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:33:17,950 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 20:33:17,951 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:33:17,951 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 20:33:17,952 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 20:33:17,952 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:33:17,953 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:33:17,953 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 20:33:17,954 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 20:33:17,954 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:33:17,955 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:33:17,955 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:33:17,955 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 20:33:17,956 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 20:33:17,956 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 20:33:17,956 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 20:33:17,957 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 20:33:17,957 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 20:33:17,957 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 20:33:17,958 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_8f91e1a1-978f-490f-ad8e-35b19890a321/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f91e1a1-978f-490f-ad8e-35b19890a321/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b2bc647ca8745ce6966563490eaffac57a1a11e1ae3ccf6c64fee22f81541d7 [2023-11-23 20:33:18,200 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:33:18,233 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:33:18,236 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:33:18,237 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:33:18,239 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:33:18,240 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f91e1a1-978f-490f-ad8e-35b19890a321/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-usb-serial-whiteheat.ko.cil.out.i [2023-11-23 20:33:21,366 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:33:21,971 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:33:21,972 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f91e1a1-978f-490f-ad8e-35b19890a321/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-usb-serial-whiteheat.ko.cil.out.i [2023-11-23 20:33:22,023 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f91e1a1-978f-490f-ad8e-35b19890a321/bin/utaipan-verify-mE87zJ7Ire/data/af9cbf545/be370c3273154dcc8feb4ec34faf154a/FLAG1c08496c8 [2023-11-23 20:33:22,042 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f91e1a1-978f-490f-ad8e-35b19890a321/bin/utaipan-verify-mE87zJ7Ire/data/af9cbf545/be370c3273154dcc8feb4ec34faf154a [2023-11-23 20:33:22,049 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:33:22,052 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:33:22,055 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:33:22,056 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:33:22,061 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:33:22,062 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:33:22" (1/1) ... [2023-11-23 20:33:22,063 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44278413 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:22, skipping insertion in model container [2023-11-23 20:33:22,063 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:33:22" (1/1) ... [2023-11-23 20:33:22,206 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:33:23,940 WARN L240 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_8f91e1a1-978f-490f-ad8e-35b19890a321/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-usb-serial-whiteheat.ko.cil.out.i[223543,223556] [2023-11-23 20:33:24,000 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:33:24,072 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 20:33:24,199 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("bswapl %0": "=r" (val): "0" (val)); [3740] [2023-11-23 20:33:24,203 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("mov" "b " "%%" "gs" ":" "%P" "1" ",%0": "=q" (pfo_ret__): "p" (& current_task)); [3785-3792] [2023-11-23 20:33:24,204 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("mov" "w " "%%" "gs" ":" "%P" "1" ",%0": "=r" (pfo_ret__): "p" (& current_task)); [3795-3802] [2023-11-23 20:33:24,204 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("mov" "l " "%%" "gs" ":" "%P" "1" ",%0": "=r" (pfo_ret__): "p" (& current_task)); [3805-3812] [2023-11-23 20:33:24,205 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("mov" "q " "%%" "gs" ":" "%P" "1" ",%0": "=r" (pfo_ret__): "p" (& current_task)); [3815-3822] [2023-11-23 20:33:24,446 WARN L240 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_8f91e1a1-978f-490f-ad8e-35b19890a321/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-usb-serial-whiteheat.ko.cil.out.i[223543,223556] [2023-11-23 20:33:24,476 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:33:24,569 WARN L675 CHandler]: The function __bad_percpu_size is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:33:24,577 INFO L206 MainTranslator]: Completed translation [2023-11-23 20:33:24,577 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:24 WrapperNode [2023-11-23 20:33:24,577 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 20:33:24,578 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 20:33:24,579 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 20:33:24,579 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 20:33:24,586 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:24" (1/1) ... [2023-11-23 20:33:24,660 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:24" (1/1) ... [2023-11-23 20:33:24,832 INFO L138 Inliner]: procedures = 167, calls = 1492, calls flagged for inlining = 73, calls inlined = 73, statements flattened = 4762 [2023-11-23 20:33:24,832 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 20:33:24,833 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 20:33:24,833 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 20:33:24,833 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 20:33:24,849 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:24" (1/1) ... [2023-11-23 20:33:24,849 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:24" (1/1) ... [2023-11-23 20:33:24,878 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:24" (1/1) ... [2023-11-23 20:33:24,878 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:24" (1/1) ... [2023-11-23 20:33:25,008 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:24" (1/1) ... [2023-11-23 20:33:25,055 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:24" (1/1) ... [2023-11-23 20:33:25,084 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:24" (1/1) ... [2023-11-23 20:33:25,108 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:24" (1/1) ... [2023-11-23 20:33:25,140 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 20:33:25,141 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 20:33:25,141 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 20:33:25,141 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 20:33:25,142 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:24" (1/1) ... [2023-11-23 20:33:25,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:33:25,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f91e1a1-978f-490f-ad8e-35b19890a321/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:33:25,178 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f91e1a1-978f-490f-ad8e-35b19890a321/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 20:33:25,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f91e1a1-978f-490f-ad8e-35b19890a321/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 20:33:25,221 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2023-11-23 20:33:25,221 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2023-11-23 20:33:25,222 INFO L130 BoogieDeclarations]: Found specification of procedure whiteheat_exit [2023-11-23 20:33:25,222 INFO L138 BoogieDeclarations]: Found implementation of procedure whiteheat_exit [2023-11-23 20:33:25,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-23 20:33:25,222 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2023-11-23 20:33:25,222 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2023-11-23 20:33:25,222 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-23 20:33:25,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-23 20:33:25,223 INFO L130 BoogieDeclarations]: Found specification of procedure usb_bulk_msg [2023-11-23 20:33:25,223 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_bulk_msg [2023-11-23 20:33:25,223 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 20:33:25,224 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_serial_port_data [2023-11-23 20:33:25,224 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_serial_port_data [2023-11-23 20:33:25,225 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-23 20:33:25,225 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-23 20:33:25,226 INFO L130 BoogieDeclarations]: Found specification of procedure ezusb_writememory [2023-11-23 20:33:25,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ezusb_writememory [2023-11-23 20:33:25,226 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2023-11-23 20:33:25,227 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2023-11-23 20:33:25,228 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-23 20:33:25,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-23 20:33:25,228 INFO L130 BoogieDeclarations]: Found specification of procedure firm_send_command [2023-11-23 20:33:25,231 INFO L138 BoogieDeclarations]: Found implementation of procedure firm_send_command [2023-11-23 20:33:25,231 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2023-11-23 20:33:25,231 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2023-11-23 20:33:25,231 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-23 20:33:25,231 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-23 20:33:25,232 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_serial_port_data [2023-11-23 20:33:25,232 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_serial_port_data [2023-11-23 20:33:25,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 20:33:25,232 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-11-23 20:33:25,232 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-11-23 20:33:25,232 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2023-11-23 20:33:25,233 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2023-11-23 20:33:25,233 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume_stop [2023-11-23 20:33:25,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume_stop [2023-11-23 20:33:25,233 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2023-11-23 20:33:25,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2023-11-23 20:33:25,233 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2023-11-23 20:33:25,233 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2023-11-23 20:33:25,234 INFO L130 BoogieDeclarations]: Found specification of procedure request_ihex_firmware [2023-11-23 20:33:25,234 INFO L138 BoogieDeclarations]: Found implementation of procedure request_ihex_firmware [2023-11-23 20:33:25,234 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_register [2023-11-23 20:33:25,234 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_register [2023-11-23 20:33:25,234 INFO L130 BoogieDeclarations]: Found specification of procedure whiteheat_attach [2023-11-23 20:33:25,234 INFO L138 BoogieDeclarations]: Found implementation of procedure whiteheat_attach [2023-11-23 20:33:25,235 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 20:33:25,235 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_debug_data [2023-11-23 20:33:25,235 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_debug_data [2023-11-23 20:33:25,235 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-11-23 20:33:25,235 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-11-23 20:33:25,235 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2023-11-23 20:33:25,236 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2023-11-23 20:33:25,236 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 20:33:25,236 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 20:33:25,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 20:33:25,238 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2023-11-23 20:33:25,238 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2023-11-23 20:33:25,238 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2023-11-23 20:33:25,239 INFO L130 BoogieDeclarations]: Found specification of procedure ihex_next_binrec [2023-11-23 20:33:25,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ihex_next_binrec [2023-11-23 20:33:25,239 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2023-11-23 20:33:25,239 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2023-11-23 20:33:25,239 INFO L130 BoogieDeclarations]: Found specification of procedure ezusb_set_reset [2023-11-23 20:33:25,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ezusb_set_reset [2023-11-23 20:33:25,241 INFO L130 BoogieDeclarations]: Found specification of procedure urb_to_wrap [2023-11-23 20:33:25,242 INFO L138 BoogieDeclarations]: Found implementation of procedure urb_to_wrap [2023-11-23 20:33:25,242 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 20:33:25,242 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2023-11-23 20:33:25,242 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2023-11-23 20:33:25,243 INFO L130 BoogieDeclarations]: Found specification of procedure firm_setup_port [2023-11-23 20:33:25,243 INFO L138 BoogieDeclarations]: Found implementation of procedure firm_setup_port [2023-11-23 20:33:25,243 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-11-23 20:33:25,243 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-11-23 20:33:25,243 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2023-11-23 20:33:25,243 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2023-11-23 20:33:25,244 INFO L130 BoogieDeclarations]: Found specification of procedure list_first [2023-11-23 20:33:25,244 INFO L138 BoogieDeclarations]: Found implementation of procedure list_first [2023-11-23 20:33:25,244 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_blast_assert [2023-11-23 20:33:25,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_blast_assert [2023-11-23 20:33:25,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 20:33:25,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 20:33:25,245 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-23 20:33:25,245 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-23 20:33:25,246 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-11-23 20:33:25,246 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-11-23 20:33:25,246 INFO L130 BoogieDeclarations]: Found specification of procedure firm_close [2023-11-23 20:33:25,246 INFO L138 BoogieDeclarations]: Found implementation of procedure firm_close [2023-11-23 20:33:25,246 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2023-11-23 20:33:25,246 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2023-11-23 20:33:25,246 INFO L130 BoogieDeclarations]: Found specification of procedure list_move [2023-11-23 20:33:25,247 INFO L138 BoogieDeclarations]: Found implementation of procedure list_move [2023-11-23 20:33:25,247 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_deregister [2023-11-23 20:33:25,247 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_deregister [2023-11-23 20:33:25,247 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2023-11-23 20:33:25,247 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2023-11-23 20:33:25,247 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2023-11-23 20:33:25,248 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2023-11-23 20:33:25,248 INFO L130 BoogieDeclarations]: Found specification of procedure stop_command_port [2023-11-23 20:33:25,248 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_command_port [2023-11-23 20:33:25,248 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2023-11-23 20:33:25,249 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2023-11-23 20:33:25,249 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2023-11-23 20:33:25,249 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2023-11-23 20:33:25,249 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2023-11-23 20:33:25,250 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2023-11-23 20:33:25,250 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2023-11-23 20:33:25,250 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2023-11-23 20:33:25,250 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undefined_pointer [2023-11-23 20:33:25,250 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undefined_pointer [2023-11-23 20:33:25,251 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2023-11-23 20:33:25,252 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2023-11-23 20:33:25,252 INFO L130 BoogieDeclarations]: Found specification of procedure release_firmware [2023-11-23 20:33:25,252 INFO L138 BoogieDeclarations]: Found implementation of procedure release_firmware [2023-11-23 20:33:25,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 20:33:25,252 INFO L130 BoogieDeclarations]: Found specification of procedure usb_clear_halt [2023-11-23 20:33:25,253 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_clear_halt [2023-11-23 20:33:25,253 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2023-11-23 20:33:25,253 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2023-11-23 20:33:25,253 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-23 20:33:25,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 20:33:25,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 20:33:25,253 INFO L130 BoogieDeclarations]: Found specification of procedure whiteheat_init [2023-11-23 20:33:25,254 INFO L138 BoogieDeclarations]: Found implementation of procedure whiteheat_init [2023-11-23 20:33:25,971 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 20:33:25,975 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 20:33:26,341 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-23 20:33:26,729 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume !false; [2023-11-23 20:33:26,729 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##25: assume false; [2023-11-23 20:33:26,756 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-23 20:33:26,948 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##35: assume !false; [2023-11-23 20:33:26,948 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##34: assume false; [2023-11-23 20:33:27,042 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_assume_stopFINAL: assume true; [2023-11-23 20:33:27,527 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-23 20:33:27,545 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-23 20:33:29,366 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##395: assume !false; [2023-11-23 20:33:29,366 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##394: assume false; [2023-11-23 20:33:29,366 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##54: assume !false; [2023-11-23 20:33:29,367 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##53: assume false; [2023-11-23 20:33:29,515 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 20:33:30,830 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 20:33:30,833 INFO L309 CfgBuilder]: Removed 94 assume(true) statements. [2023-11-23 20:33:30,836 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:33:30 BoogieIcfgContainer [2023-11-23 20:33:30,836 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 20:33:30,839 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 20:33:30,840 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 20:33:30,843 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 20:33:30,845 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:33:22" (1/3) ... [2023-11-23 20:33:30,847 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a498cca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:33:30, skipping insertion in model container [2023-11-23 20:33:30,848 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:24" (2/3) ... [2023-11-23 20:33:30,855 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a498cca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:33:30, skipping insertion in model container [2023-11-23 20:33:30,855 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:33:30" (3/3) ... [2023-11-23 20:33:30,856 INFO L112 eAbstractionObserver]: Analyzing ICFG usb_urb-drivers-usb-serial-whiteheat.ko.cil.out.i [2023-11-23 20:33:30,877 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 20:33:30,878 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 20:33:30,978 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 20:33:30,985 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=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@6b7a12da, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 20:33:30,986 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 20:33:30,997 INFO L276 IsEmpty]: Start isEmpty. Operand has 1003 states, 628 states have (on average 1.393312101910828) internal successors, (875), 653 states have internal predecessors, (875), 320 states have call successors, (320), 54 states have call predecessors, (320), 53 states have return successors, (319), 316 states have call predecessors, (319), 319 states have call successors, (319) [2023-11-23 20:33:31,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-23 20:33:31,009 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:33:31,010 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:33:31,010 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:33:31,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:33:31,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1852417872, now seen corresponding path program 1 times [2023-11-23 20:33:31,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:33:31,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167060463] [2023-11-23 20:33:31,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:33:31,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:33:34,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:33:35,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:33:35,034 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:33:35,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167060463] [2023-11-23 20:33:35,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167060463] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:33:35,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:33:35,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 20:33:35,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582096252] [2023-11-23 20:33:35,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:33:35,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:33:35,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:33:35,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:33:35,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:33:35,078 INFO L87 Difference]: Start difference. First operand has 1003 states, 628 states have (on average 1.393312101910828) internal successors, (875), 653 states have internal predecessors, (875), 320 states have call successors, (320), 54 states have call predecessors, (320), 53 states have return successors, (319), 316 states have call predecessors, (319), 319 states have call successors, (319) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 20:33:37,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:33:37,436 INFO L93 Difference]: Finished difference Result 2915 states and 4468 transitions. [2023-11-23 20:33:37,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:33:37,439 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2023-11-23 20:33:37,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:33:37,472 INFO L225 Difference]: With dead ends: 2915 [2023-11-23 20:33:37,472 INFO L226 Difference]: Without dead ends: 1927 [2023-11-23 20:33:37,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:33:37,491 INFO L413 NwaCegarLoop]: 1259 mSDtfsCounter, 1344 mSDsluCounter, 1220 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1344 SdHoareTripleChecker+Valid, 2479 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-23 20:33:37,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1344 Valid, 2479 Invalid, 512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-23 20:33:37,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1927 states. [2023-11-23 20:33:37,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1927 to 1923. [2023-11-23 20:33:37,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1923 states, 1210 states have (on average 1.2446280991735537) internal successors, (1506), 1242 states have internal predecessors, (1506), 612 states have call successors, (612), 102 states have call predecessors, (612), 100 states have return successors, (611), 601 states have call predecessors, (611), 609 states have call successors, (611) [2023-11-23 20:33:37,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1923 states to 1923 states and 2729 transitions. [2023-11-23 20:33:37,755 INFO L78 Accepts]: Start accepts. Automaton has 1923 states and 2729 transitions. Word has length 17 [2023-11-23 20:33:37,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:33:37,756 INFO L495 AbstractCegarLoop]: Abstraction has 1923 states and 2729 transitions. [2023-11-23 20:33:37,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 20:33:37,757 INFO L276 IsEmpty]: Start isEmpty. Operand 1923 states and 2729 transitions. [2023-11-23 20:33:37,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-23 20:33:37,758 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:33:37,758 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:33:37,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 20:33:37,759 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:33:37,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:33:37,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1589784091, now seen corresponding path program 1 times [2023-11-23 20:33:37,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:33:37,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67932337] [2023-11-23 20:33:37,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:33:37,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:33:40,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:33:40,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:33:40,435 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:33:40,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67932337] [2023-11-23 20:33:40,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67932337] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:33:40,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:33:40,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 20:33:40,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11730599] [2023-11-23 20:33:40,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:33:40,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:33:40,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:33:40,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:33:40,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:33:40,444 INFO L87 Difference]: Start difference. First operand 1923 states and 2729 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 20:33:41,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:33:41,945 INFO L93 Difference]: Finished difference Result 1925 states and 2730 transitions. [2023-11-23 20:33:41,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:33:41,946 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), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2023-11-23 20:33:41,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:33:41,963 INFO L225 Difference]: With dead ends: 1925 [2023-11-23 20:33:41,963 INFO L226 Difference]: Without dead ends: 1913 [2023-11-23 20:33:41,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:33:41,967 INFO L413 NwaCegarLoop]: 1248 mSDtfsCounter, 1407 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1407 SdHoareTripleChecker+Valid, 1248 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-23 20:33:41,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1407 Valid, 1248 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-23 20:33:41,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1913 states. [2023-11-23 20:33:42,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1913 to 1913. [2023-11-23 20:33:42,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1913 states, 1205 states have (on average 1.24149377593361) internal successors, (1496), 1235 states have internal predecessors, (1496), 608 states have call successors, (608), 101 states have call predecessors, (608), 99 states have return successors, (608), 598 states have call predecessors, (608), 606 states have call successors, (608) [2023-11-23 20:33:42,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1913 states to 1913 states and 2712 transitions. [2023-11-23 20:33:42,180 INFO L78 Accepts]: Start accepts. Automaton has 1913 states and 2712 transitions. Word has length 18 [2023-11-23 20:33:42,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:33:42,180 INFO L495 AbstractCegarLoop]: Abstraction has 1913 states and 2712 transitions. [2023-11-23 20:33:42,181 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), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 20:33:42,181 INFO L276 IsEmpty]: Start isEmpty. Operand 1913 states and 2712 transitions. [2023-11-23 20:33:42,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-23 20:33:42,194 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:33:42,195 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-11-23 20:33:42,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 20:33:42,195 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:33:42,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:33:42,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1608255110, now seen corresponding path program 1 times [2023-11-23 20:33:42,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:33:42,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955235211] [2023-11-23 20:33:42,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:33:42,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:33:44,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:33:45,368 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-23 20:33:45,369 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:33:45,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955235211] [2023-11-23 20:33:45,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955235211] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:33:45,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:33:45,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 20:33:45,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843782428] [2023-11-23 20:33:45,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:33:45,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:33:45,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:33:45,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:33:45,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:33:45,373 INFO L87 Difference]: Start difference. First operand 1913 states and 2712 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-23 20:33:47,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:33:47,827 INFO L93 Difference]: Finished difference Result 4533 states and 6521 transitions. [2023-11-23 20:33:47,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:33:47,828 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 81 [2023-11-23 20:33:47,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:33:47,925 INFO L225 Difference]: With dead ends: 4533 [2023-11-23 20:33:47,925 INFO L226 Difference]: Without dead ends: 2642 [2023-11-23 20:33:47,939 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:33:47,943 INFO L413 NwaCegarLoop]: 1343 mSDtfsCounter, 372 mSDsluCounter, 1153 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 539 SdHoareTripleChecker+Valid, 2496 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-23 20:33:47,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [539 Valid, 2496 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-23 20:33:47,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2642 states. [2023-11-23 20:33:48,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2642 to 2638. [2023-11-23 20:33:48,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2638 states, 1676 states have (on average 1.2523866348448687) internal successors, (2099), 1720 states have internal predecessors, (2099), 862 states have call successors, (862), 101 states have call predecessors, (862), 99 states have return successors, (863), 846 states have call predecessors, (863), 860 states have call successors, (863) [2023-11-23 20:33:48,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2638 states to 2638 states and 3824 transitions. [2023-11-23 20:33:48,161 INFO L78 Accepts]: Start accepts. Automaton has 2638 states and 3824 transitions. Word has length 81 [2023-11-23 20:33:48,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:33:48,161 INFO L495 AbstractCegarLoop]: Abstraction has 2638 states and 3824 transitions. [2023-11-23 20:33:48,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-23 20:33:48,162 INFO L276 IsEmpty]: Start isEmpty. Operand 2638 states and 3824 transitions. [2023-11-23 20:33:48,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-11-23 20:33:48,171 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:33:48,171 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:33:48,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 20:33:48,172 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:33:48,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:33:48,172 INFO L85 PathProgramCache]: Analyzing trace with hash 62967617, now seen corresponding path program 1 times [2023-11-23 20:33:48,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:33:48,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980315487] [2023-11-23 20:33:48,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:33:48,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:33:50,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:33:51,426 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-23 20:33:51,427 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:33:51,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980315487] [2023-11-23 20:33:51,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980315487] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:33:51,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:33:51,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 20:33:51,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346116546] [2023-11-23 20:33:51,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:33:51,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 20:33:51,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:33:51,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 20:33:51,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 20:33:51,430 INFO L87 Difference]: Start difference. First operand 2638 states and 3824 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-11-23 20:33:53,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:33:53,642 INFO L93 Difference]: Finished difference Result 5269 states and 7643 transitions. [2023-11-23 20:33:53,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 20:33:53,643 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 113 [2023-11-23 20:33:53,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:33:53,668 INFO L225 Difference]: With dead ends: 5269 [2023-11-23 20:33:53,668 INFO L226 Difference]: Without dead ends: 2654 [2023-11-23 20:33:53,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 20:33:53,683 INFO L413 NwaCegarLoop]: 1251 mSDtfsCounter, 58 mSDsluCounter, 2396 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 3647 SdHoareTripleChecker+Invalid, 516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-23 20:33:53,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 3647 Invalid, 516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 503 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-23 20:33:53,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2654 states. [2023-11-23 20:33:53,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2654 to 2644. [2023-11-23 20:33:53,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2644 states, 1680 states have (on average 1.2517857142857143) internal successors, (2103), 1724 states have internal predecessors, (2103), 864 states have call successors, (864), 101 states have call predecessors, (864), 99 states have return successors, (865), 848 states have call predecessors, (865), 862 states have call successors, (865) [2023-11-23 20:33:53,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2644 states to 2644 states and 3832 transitions. [2023-11-23 20:33:53,896 INFO L78 Accepts]: Start accepts. Automaton has 2644 states and 3832 transitions. Word has length 113 [2023-11-23 20:33:53,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:33:53,897 INFO L495 AbstractCegarLoop]: Abstraction has 2644 states and 3832 transitions. [2023-11-23 20:33:53,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-11-23 20:33:53,898 INFO L276 IsEmpty]: Start isEmpty. Operand 2644 states and 3832 transitions. [2023-11-23 20:33:53,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-11-23 20:33:53,908 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:33:53,909 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2023-11-23 20:33:53,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 20:33:53,909 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:33:53,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:33:53,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1907735153, now seen corresponding path program 1 times [2023-11-23 20:33:53,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:33:53,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968925040] [2023-11-23 20:33:53,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:33:53,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:33:56,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:33:57,282 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-23 20:33:57,282 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:33:57,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968925040] [2023-11-23 20:33:57,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968925040] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:33:57,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:33:57,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 20:33:57,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786844819] [2023-11-23 20:33:57,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:33:57,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 20:33:57,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:33:57,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 20:33:57,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 20:33:57,288 INFO L87 Difference]: Start difference. First operand 2644 states and 3832 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-11-23 20:33:59,124 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 20:34:01,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:34:01,380 INFO L93 Difference]: Finished difference Result 3845 states and 5578 transitions. [2023-11-23 20:34:01,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 20:34:01,381 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 118 [2023-11-23 20:34:01,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:34:01,392 INFO L225 Difference]: With dead ends: 3845 [2023-11-23 20:34:01,392 INFO L226 Difference]: Without dead ends: 1224 [2023-11-23 20:34:01,405 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-23 20:34:01,406 INFO L413 NwaCegarLoop]: 1059 mSDtfsCounter, 9 mSDsluCounter, 2996 mSDsCounter, 0 mSdLazyCounter, 761 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 4055 SdHoareTripleChecker+Invalid, 761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-11-23 20:34:01,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 4055 Invalid, 761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 761 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-11-23 20:34:01,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1224 states. [2023-11-23 20:34:01,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1224 to 1215. [2023-11-23 20:34:01,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1215 states, 779 states have (on average 1.2528883183568678) internal successors, (976), 797 states have internal predecessors, (976), 390 states have call successors, (390), 46 states have call predecessors, (390), 45 states have return successors, (389), 383 states have call predecessors, (389), 389 states have call successors, (389) [2023-11-23 20:34:01,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1215 states to 1215 states and 1755 transitions. [2023-11-23 20:34:01,495 INFO L78 Accepts]: Start accepts. Automaton has 1215 states and 1755 transitions. Word has length 118 [2023-11-23 20:34:01,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:34:01,496 INFO L495 AbstractCegarLoop]: Abstraction has 1215 states and 1755 transitions. [2023-11-23 20:34:01,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-11-23 20:34:01,497 INFO L276 IsEmpty]: Start isEmpty. Operand 1215 states and 1755 transitions. [2023-11-23 20:34:01,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-11-23 20:34:01,506 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:34:01,506 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:34:01,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 20:34:01,506 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:34:01,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:34:01,507 INFO L85 PathProgramCache]: Analyzing trace with hash 372619188, now seen corresponding path program 1 times [2023-11-23 20:34:01,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:34:01,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227900134] [2023-11-23 20:34:01,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:34:01,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:34:03,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:34:04,420 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-23 20:34:04,420 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:34:04,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227900134] [2023-11-23 20:34:04,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227900134] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 20:34:04,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [275770665] [2023-11-23 20:34:04,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:34:04,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:34:04,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f91e1a1-978f-490f-ad8e-35b19890a321/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:34:04,424 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f91e1a1-978f-490f-ad8e-35b19890a321/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:34:04,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f91e1a1-978f-490f-ad8e-35b19890a321/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 20:34:07,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:34:07,935 INFO L262 TraceCheckSpWp]: Trace formula consists of 3149 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 20:34:07,955 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:34:08,115 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-23 20:34:08,116 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 20:34:08,318 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-23 20:34:08,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [275770665] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 20:34:08,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [727376636] [2023-11-23 20:34:08,352 INFO L159 IcfgInterpreter]: Started Sifa with 112 locations of interest [2023-11-23 20:34:08,353 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 20:34:08,357 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 20:34:08,363 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 20:34:08,364 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs