./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 9bd2c7ff 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_cd3ac469-9fe2-4597-82a9-aa3c7cdb1ac3/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3ac469-9fe2-4597-82a9-aa3c7cdb1ac3/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3ac469-9fe2-4597-82a9-aa3c7cdb1ac3/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3ac469-9fe2-4597-82a9-aa3c7cdb1ac3/bin/utaipan-verify-t7M7D8N6sZ/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_cd3ac469-9fe2-4597-82a9-aa3c7cdb1ac3/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3ac469-9fe2-4597-82a9-aa3c7cdb1ac3/bin/utaipan-verify-t7M7D8N6sZ --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-9bd2c7f [2023-11-19 05:05:53,752 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:05:53,839 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3ac469-9fe2-4597-82a9-aa3c7cdb1ac3/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-19 05:05:53,846 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:05:53,847 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:05:53,878 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:05:53,879 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:05:53,880 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:05:53,881 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:05:53,881 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:05:53,882 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:05:53,882 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:05:53,883 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:05:53,884 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:05:53,884 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:05:53,885 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:05:53,886 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:05:53,886 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:05:53,887 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:05:53,888 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:05:53,889 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:05:53,889 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:05:53,890 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:05:53,891 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:05:53,892 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:05:53,892 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:05:53,893 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:05:53,894 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:05:53,894 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:05:53,895 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:05:53,895 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:05:53,896 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:05:53,896 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:05:53,897 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:05:53,897 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:05:53,898 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:05:53,898 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:05:53,899 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:05:53,899 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:05:53,900 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:05:53,900 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:05:53,901 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:05:53,902 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_cd3ac469-9fe2-4597-82a9-aa3c7cdb1ac3/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3ac469-9fe2-4597-82a9-aa3c7cdb1ac3/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b2bc647ca8745ce6966563490eaffac57a1a11e1ae3ccf6c64fee22f81541d7 [2023-11-19 05:05:54,162 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:05:54,199 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:05:54,202 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:05:54,203 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:05:54,205 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:05:54,206 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3ac469-9fe2-4597-82a9-aa3c7cdb1ac3/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-usb-serial-whiteheat.ko.cil.out.i [2023-11-19 05:05:57,585 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:05:58,231 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:05:58,232 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3ac469-9fe2-4597-82a9-aa3c7cdb1ac3/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-usb-serial-whiteheat.ko.cil.out.i [2023-11-19 05:05:58,289 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3ac469-9fe2-4597-82a9-aa3c7cdb1ac3/bin/utaipan-verify-t7M7D8N6sZ/data/2651ff2d9/8a2c69a696754bf8b8a922c0bc74b802/FLAG4a173df85 [2023-11-19 05:05:58,312 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3ac469-9fe2-4597-82a9-aa3c7cdb1ac3/bin/utaipan-verify-t7M7D8N6sZ/data/2651ff2d9/8a2c69a696754bf8b8a922c0bc74b802 [2023-11-19 05:05:58,321 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:05:58,324 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:05:58,327 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:05:58,327 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:05:58,334 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:05:58,335 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:05:58" (1/1) ... [2023-11-19 05:05:58,336 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27403703 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:05:58, skipping insertion in model container [2023-11-19 05:05:58,337 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:05:58" (1/1) ... [2023-11-19 05:05:58,503 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:06:00,138 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_cd3ac469-9fe2-4597-82a9-aa3c7cdb1ac3/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-usb-serial-whiteheat.ko.cil.out.i[223543,223556] [2023-11-19 05:06:00,212 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:06:00,263 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:06:00,363 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("bswapl %0": "=r" (val): "0" (val)); [3740] [2023-11-19 05:06:00,368 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] [2023-11-19 05:06:00,369 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] [2023-11-19 05:06:00,369 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] [2023-11-19 05:06:00,370 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] [2023-11-19 05:06:00,713 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_cd3ac469-9fe2-4597-82a9-aa3c7cdb1ac3/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-usb-serial-whiteheat.ko.cil.out.i[223543,223556] [2023-11-19 05:06:00,745 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:06:00,829 WARN L675 CHandler]: The function __bad_percpu_size is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:06:00,837 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:06:00,838 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:06:00 WrapperNode [2023-11-19 05:06:00,838 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:06:00,840 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:06:00,840 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:06:00,840 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:06:00,847 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:06:00" (1/1) ... [2023-11-19 05:06:00,942 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:06:00" (1/1) ... [2023-11-19 05:06:01,118 INFO L138 Inliner]: procedures = 167, calls = 1492, calls flagged for inlining = 73, calls inlined = 73, statements flattened = 4762 [2023-11-19 05:06:01,119 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:06:01,120 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:06:01,120 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:06:01,120 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:06:01,130 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:06:00" (1/1) ... [2023-11-19 05:06:01,130 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:06:00" (1/1) ... [2023-11-19 05:06:01,164 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:06:00" (1/1) ... [2023-11-19 05:06:01,165 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:06:00" (1/1) ... [2023-11-19 05:06:01,369 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:06:00" (1/1) ... [2023-11-19 05:06:01,407 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:06:00" (1/1) ... [2023-11-19 05:06:01,441 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:06:00" (1/1) ... [2023-11-19 05:06:01,462 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:06:00" (1/1) ... [2023-11-19 05:06:01,498 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:06:01,500 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:06:01,501 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:06:01,501 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:06:01,502 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:06:00" (1/1) ... [2023-11-19 05:06:01,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:06:01,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3ac469-9fe2-4597-82a9-aa3c7cdb1ac3/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:06:01,536 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3ac469-9fe2-4597-82a9-aa3c7cdb1ac3/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:06:01,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3ac469-9fe2-4597-82a9-aa3c7cdb1ac3/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:06:01,595 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2023-11-19 05:06:01,595 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2023-11-19 05:06:01,596 INFO L130 BoogieDeclarations]: Found specification of procedure whiteheat_exit [2023-11-19 05:06:01,596 INFO L138 BoogieDeclarations]: Found implementation of procedure whiteheat_exit [2023-11-19 05:06:01,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-19 05:06:01,596 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2023-11-19 05:06:01,597 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2023-11-19 05:06:01,597 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-19 05:06:01,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-19 05:06:01,597 INFO L130 BoogieDeclarations]: Found specification of procedure usb_bulk_msg [2023-11-19 05:06:01,597 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_bulk_msg [2023-11-19 05:06:01,598 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 05:06:01,598 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_serial_port_data [2023-11-19 05:06:01,598 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_serial_port_data [2023-11-19 05:06:01,598 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-19 05:06:01,599 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-19 05:06:01,599 INFO L130 BoogieDeclarations]: Found specification of procedure ezusb_writememory [2023-11-19 05:06:01,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ezusb_writememory [2023-11-19 05:06:01,599 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2023-11-19 05:06:01,600 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2023-11-19 05:06:01,600 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-19 05:06:01,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-19 05:06:01,600 INFO L130 BoogieDeclarations]: Found specification of procedure firm_send_command [2023-11-19 05:06:01,600 INFO L138 BoogieDeclarations]: Found implementation of procedure firm_send_command [2023-11-19 05:06:01,601 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2023-11-19 05:06:01,601 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2023-11-19 05:06:01,601 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-19 05:06:01,601 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-19 05:06:01,601 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_serial_port_data [2023-11-19 05:06:01,602 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_serial_port_data [2023-11-19 05:06:01,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 05:06:01,602 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-11-19 05:06:01,602 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-11-19 05:06:01,603 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2023-11-19 05:06:01,603 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2023-11-19 05:06:01,603 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume_stop [2023-11-19 05:06:01,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume_stop [2023-11-19 05:06:01,603 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2023-11-19 05:06:01,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2023-11-19 05:06:01,604 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2023-11-19 05:06:01,604 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2023-11-19 05:06:01,604 INFO L130 BoogieDeclarations]: Found specification of procedure request_ihex_firmware [2023-11-19 05:06:01,604 INFO L138 BoogieDeclarations]: Found implementation of procedure request_ihex_firmware [2023-11-19 05:06:01,604 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_register [2023-11-19 05:06:01,605 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_register [2023-11-19 05:06:01,605 INFO L130 BoogieDeclarations]: Found specification of procedure whiteheat_attach [2023-11-19 05:06:01,605 INFO L138 BoogieDeclarations]: Found implementation of procedure whiteheat_attach [2023-11-19 05:06:01,605 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 05:06:01,606 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_debug_data [2023-11-19 05:06:01,606 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_debug_data [2023-11-19 05:06:01,606 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-11-19 05:06:01,606 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-11-19 05:06:01,606 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2023-11-19 05:06:01,606 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2023-11-19 05:06:01,607 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:06:01,607 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 05:06:01,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 05:06:01,607 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2023-11-19 05:06:01,607 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2023-11-19 05:06:01,608 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2023-11-19 05:06:01,608 INFO L130 BoogieDeclarations]: Found specification of procedure ihex_next_binrec [2023-11-19 05:06:01,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ihex_next_binrec [2023-11-19 05:06:01,608 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2023-11-19 05:06:01,609 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2023-11-19 05:06:01,609 INFO L130 BoogieDeclarations]: Found specification of procedure ezusb_set_reset [2023-11-19 05:06:01,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ezusb_set_reset [2023-11-19 05:06:01,609 INFO L130 BoogieDeclarations]: Found specification of procedure urb_to_wrap [2023-11-19 05:06:01,609 INFO L138 BoogieDeclarations]: Found implementation of procedure urb_to_wrap [2023-11-19 05:06:01,609 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 05:06:01,610 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2023-11-19 05:06:01,610 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2023-11-19 05:06:01,610 INFO L130 BoogieDeclarations]: Found specification of procedure firm_setup_port [2023-11-19 05:06:01,610 INFO L138 BoogieDeclarations]: Found implementation of procedure firm_setup_port [2023-11-19 05:06:01,610 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-11-19 05:06:01,611 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-11-19 05:06:01,611 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2023-11-19 05:06:01,611 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2023-11-19 05:06:01,611 INFO L130 BoogieDeclarations]: Found specification of procedure list_first [2023-11-19 05:06:01,611 INFO L138 BoogieDeclarations]: Found implementation of procedure list_first [2023-11-19 05:06:01,612 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_blast_assert [2023-11-19 05:06:01,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_blast_assert [2023-11-19 05:06:01,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 05:06:01,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-19 05:06:01,612 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-19 05:06:01,613 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-19 05:06:01,613 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-11-19 05:06:01,613 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-11-19 05:06:01,613 INFO L130 BoogieDeclarations]: Found specification of procedure firm_close [2023-11-19 05:06:01,613 INFO L138 BoogieDeclarations]: Found implementation of procedure firm_close [2023-11-19 05:06:01,614 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2023-11-19 05:06:01,614 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2023-11-19 05:06:01,614 INFO L130 BoogieDeclarations]: Found specification of procedure list_move [2023-11-19 05:06:01,614 INFO L138 BoogieDeclarations]: Found implementation of procedure list_move [2023-11-19 05:06:01,614 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_deregister [2023-11-19 05:06:01,615 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_deregister [2023-11-19 05:06:01,615 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2023-11-19 05:06:01,615 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2023-11-19 05:06:01,615 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2023-11-19 05:06:01,615 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2023-11-19 05:06:01,615 INFO L130 BoogieDeclarations]: Found specification of procedure stop_command_port [2023-11-19 05:06:01,616 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_command_port [2023-11-19 05:06:01,616 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2023-11-19 05:06:01,616 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2023-11-19 05:06:01,616 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2023-11-19 05:06:01,616 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2023-11-19 05:06:01,617 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2023-11-19 05:06:01,617 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2023-11-19 05:06:01,617 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2023-11-19 05:06:01,617 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2023-11-19 05:06:01,617 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undefined_pointer [2023-11-19 05:06:01,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undefined_pointer [2023-11-19 05:06:01,618 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2023-11-19 05:06:01,618 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2023-11-19 05:06:01,618 INFO L130 BoogieDeclarations]: Found specification of procedure release_firmware [2023-11-19 05:06:01,618 INFO L138 BoogieDeclarations]: Found implementation of procedure release_firmware [2023-11-19 05:06:01,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 05:06:01,619 INFO L130 BoogieDeclarations]: Found specification of procedure usb_clear_halt [2023-11-19 05:06:01,619 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_clear_halt [2023-11-19 05:06:01,619 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2023-11-19 05:06:01,619 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2023-11-19 05:06:01,620 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-19 05:06:01,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:06:01,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:06:01,620 INFO L130 BoogieDeclarations]: Found specification of procedure whiteheat_init [2023-11-19 05:06:01,620 INFO L138 BoogieDeclarations]: Found implementation of procedure whiteheat_init [2023-11-19 05:06:02,271 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:06:02,276 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:06:02,746 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-19 05:06:03,072 INFO L767 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume !false; [2023-11-19 05:06:03,073 INFO L767 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##25: assume false; [2023-11-19 05:06:03,090 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-19 05:06:03,226 INFO L767 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##35: assume !false; [2023-11-19 05:06:03,226 INFO L767 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##34: assume false; [2023-11-19 05:06:03,319 INFO L767 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_assume_stopFINAL: assume true; [2023-11-19 05:06:03,785 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-19 05:06:03,798 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-19 05:06:06,432 INFO L767 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##395: assume !false; [2023-11-19 05:06:06,433 INFO L767 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##394: assume false; [2023-11-19 05:06:06,433 INFO L767 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##54: assume !false; [2023-11-19 05:06:06,433 INFO L767 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##53: assume false; [2023-11-19 05:06:06,583 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:06:08,034 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:06:08,035 INFO L302 CfgBuilder]: Removed 94 assume(true) statements. [2023-11-19 05:06:08,055 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:06:08 BoogieIcfgContainer [2023-11-19 05:06:08,058 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:06:08,063 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:06:08,063 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:06:08,067 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:06:08,069 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:05:58" (1/3) ... [2023-11-19 05:06:08,071 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d7509b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:06:08, skipping insertion in model container [2023-11-19 05:06:08,073 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:06:00" (2/3) ... [2023-11-19 05:06:08,074 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d7509b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:06:08, skipping insertion in model container [2023-11-19 05:06:08,074 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:06:08" (3/3) ... [2023-11-19 05:06:08,082 INFO L112 eAbstractionObserver]: Analyzing ICFG usb_urb-drivers-usb-serial-whiteheat.ko.cil.out.i [2023-11-19 05:06:08,109 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:06:08,109 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 05:06:08,267 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:06:08,274 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;@1a9cdae4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:06:08,274 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 05:06:08,285 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) [2023-11-19 05:06:08,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-19 05:06:08,295 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:06:08,295 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:06:08,296 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:06:08,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:06:08,302 INFO L85 PathProgramCache]: Analyzing trace with hash -493093459, now seen corresponding path program 1 times [2023-11-19 05:06:08,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:06:08,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882228377] [2023-11-19 05:06:08,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:06:08,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:06:11,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:06:12,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:06:12,204 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:06:12,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882228377] [2023-11-19 05:06:12,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882228377] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:06:12,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:06:12,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:06:12,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347220046] [2023-11-19 05:06:12,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:06:12,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:06:12,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:06:12,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:06:12,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:06:12,276 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) [2023-11-19 05:06:15,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:06:15,239 INFO L93 Difference]: Finished difference Result 2915 states and 4468 transitions. [2023-11-19 05:06:15,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:06:15,242 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 [2023-11-19 05:06:15,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:06:15,288 INFO L225 Difference]: With dead ends: 2915 [2023-11-19 05:06:15,289 INFO L226 Difference]: Without dead ends: 1927 [2023-11-19 05:06:15,303 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 [2023-11-19 05:06:15,307 INFO L413 NwaCegarLoop]: 1259 mSDtfsCounter, 1344 mSDsluCounter, 1220 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1344 SdHoareTripleChecker+Valid, 2479 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-19 05:06:15,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1344 Valid, 2479 Invalid, 512 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [178 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-19 05:06:15,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1927 states. [2023-11-19 05:06:15,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1927 to 1923. [2023-11-19 05:06:15,520 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) [2023-11-19 05:06:15,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1923 states to 1923 states and 2729 transitions. [2023-11-19 05:06:15,546 INFO L78 Accepts]: Start accepts. Automaton has 1923 states and 2729 transitions. Word has length 17 [2023-11-19 05:06:15,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:06:15,546 INFO L495 AbstractCegarLoop]: Abstraction has 1923 states and 2729 transitions. [2023-11-19 05:06:15,547 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) [2023-11-19 05:06:15,547 INFO L276 IsEmpty]: Start isEmpty. Operand 1923 states and 2729 transitions. [2023-11-19 05:06:15,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-19 05:06:15,549 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:06:15,549 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:06:15,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 05:06:15,550 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:06:15,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:06:15,551 INFO L85 PathProgramCache]: Analyzing trace with hash 1893376862, now seen corresponding path program 1 times [2023-11-19 05:06:15,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:06:15,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492804571] [2023-11-19 05:06:15,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:06:15,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:06:18,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:06:18,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:06:18,909 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:06:18,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492804571] [2023-11-19 05:06:18,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492804571] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:06:18,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:06:18,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:06:18,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672452551] [2023-11-19 05:06:18,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:06:18,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:06:18,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:06:18,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:06:18,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:06:18,920 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) [2023-11-19 05:06:19,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:06:19,849 INFO L93 Difference]: Finished difference Result 1925 states and 2730 transitions. [2023-11-19 05:06:19,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:06:19,850 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 [2023-11-19 05:06:19,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:06:19,871 INFO L225 Difference]: With dead ends: 1925 [2023-11-19 05:06:19,871 INFO L226 Difference]: Without dead ends: 1913 [2023-11-19 05:06:19,874 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 [2023-11-19 05:06:19,876 INFO L413 NwaCegarLoop]: 1248 mSDtfsCounter, 1407 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.8s IncrementalHoareTripleChecker+Time [2023-11-19 05:06:19,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1407 Valid, 1248 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-19 05:06:19,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1913 states. [2023-11-19 05:06:20,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1913 to 1913. [2023-11-19 05:06:20,077 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) [2023-11-19 05:06:20,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1913 states to 1913 states and 2712 transitions. [2023-11-19 05:06:20,094 INFO L78 Accepts]: Start accepts. Automaton has 1913 states and 2712 transitions. Word has length 18 [2023-11-19 05:06:20,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:06:20,094 INFO L495 AbstractCegarLoop]: Abstraction has 1913 states and 2712 transitions. [2023-11-19 05:06:20,095 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) [2023-11-19 05:06:20,095 INFO L276 IsEmpty]: Start isEmpty. Operand 1913 states and 2712 transitions. [2023-11-19 05:06:20,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-19 05:06:20,108 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:06:20,108 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] [2023-11-19 05:06:20,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 05:06:20,109 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:06:20,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:06:20,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1337364001, now seen corresponding path program 1 times [2023-11-19 05:06:20,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:06:20,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563710642] [2023-11-19 05:06:20,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:06:20,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:06:22,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:06:23,293 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-19 05:06:23,294 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:06:23,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563710642] [2023-11-19 05:06:23,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563710642] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:06:23,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:06:23,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:06:23,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718177961] [2023-11-19 05:06:23,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:06:23,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:06:23,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:06:23,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:06:23,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:06:23,305 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) [2023-11-19 05:06:25,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:06:25,151 INFO L93 Difference]: Finished difference Result 4533 states and 6521 transitions. [2023-11-19 05:06:25,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:06:25,152 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 [2023-11-19 05:06:25,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:06:25,181 INFO L225 Difference]: With dead ends: 4533 [2023-11-19 05:06:25,181 INFO L226 Difference]: Without dead ends: 2642 [2023-11-19 05:06:25,195 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 [2023-11-19 05:06:25,203 INFO L413 NwaCegarLoop]: 1355 mSDtfsCounter, 372 mSDsluCounter, 1159 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 539 SdHoareTripleChecker+Valid, 2514 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-19 05:06:25,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [539 Valid, 2514 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-19 05:06:25,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2642 states. [2023-11-19 05:06:25,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2642 to 2638. [2023-11-19 05:06:25,415 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) [2023-11-19 05:06:25,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2638 states to 2638 states and 3824 transitions. [2023-11-19 05:06:25,441 INFO L78 Accepts]: Start accepts. Automaton has 2638 states and 3824 transitions. Word has length 81 [2023-11-19 05:06:25,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:06:25,441 INFO L495 AbstractCegarLoop]: Abstraction has 2638 states and 3824 transitions. [2023-11-19 05:06:25,441 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) [2023-11-19 05:06:25,442 INFO L276 IsEmpty]: Start isEmpty. Operand 2638 states and 3824 transitions. [2023-11-19 05:06:25,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-11-19 05:06:25,451 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:06:25,452 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] [2023-11-19 05:06:25,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 05:06:25,452 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:06:25,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:06:25,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1910759088, now seen corresponding path program 1 times [2023-11-19 05:06:25,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:06:25,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666505139] [2023-11-19 05:06:25,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:06:25,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:06:28,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:06:28,913 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-19 05:06:28,913 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:06:28,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666505139] [2023-11-19 05:06:28,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666505139] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:06:28,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:06:28,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:06:28,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531611117] [2023-11-19 05:06:28,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:06:28,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:06:28,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:06:28,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:06:28,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:06:28,916 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) [2023-11-19 05:06:31,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:06:31,139 INFO L93 Difference]: Finished difference Result 5269 states and 7643 transitions. [2023-11-19 05:06:31,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:06:31,140 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 [2023-11-19 05:06:31,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:06:31,162 INFO L225 Difference]: With dead ends: 5269 [2023-11-19 05:06:31,162 INFO L226 Difference]: Without dead ends: 2654 [2023-11-19 05:06:31,176 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 [2023-11-19 05:06:31,177 INFO L413 NwaCegarLoop]: 1251 mSDtfsCounter, 58 mSDsluCounter, 2396 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s 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 [2023-11-19 05:06:31,177 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] [2023-11-19 05:06:31,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2654 states. [2023-11-19 05:06:31,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2654 to 2644. [2023-11-19 05:06:31,347 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) [2023-11-19 05:06:31,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2644 states to 2644 states and 3832 transitions. [2023-11-19 05:06:31,364 INFO L78 Accepts]: Start accepts. Automaton has 2644 states and 3832 transitions. Word has length 113 [2023-11-19 05:06:31,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:06:31,366 INFO L495 AbstractCegarLoop]: Abstraction has 2644 states and 3832 transitions. [2023-11-19 05:06:31,367 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) [2023-11-19 05:06:31,367 INFO L276 IsEmpty]: Start isEmpty. Operand 2644 states and 3832 transitions. [2023-11-19 05:06:31,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-11-19 05:06:31,378 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:06:31,378 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] [2023-11-19 05:06:31,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 05:06:31,378 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:06:31,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:06:31,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1447995599, now seen corresponding path program 1 times [2023-11-19 05:06:31,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:06:31,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807595237] [2023-11-19 05:06:31,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:06:31,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:06:33,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:06:34,469 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-19 05:06:34,469 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:06:34,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807595237] [2023-11-19 05:06:34,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807595237] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:06:34,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:06:34,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 05:06:34,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000167703] [2023-11-19 05:06:34,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:06:34,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 05:06:34,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:06:34,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 05:06:34,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:06:34,473 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) [2023-11-19 05:06:37,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:06:37,453 INFO L93 Difference]: Finished difference Result 3845 states and 5578 transitions. [2023-11-19 05:06:37,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 05:06:37,454 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 [2023-11-19 05:06:37,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:06:37,467 INFO L225 Difference]: With dead ends: 3845 [2023-11-19 05:06:37,468 INFO L226 Difference]: Without dead ends: 1224 [2023-11-19 05:06:37,482 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 [2023-11-19 05:06:37,484 INFO L413 NwaCegarLoop]: 1059 mSDtfsCounter, 9 mSDsluCounter, 2996 mSDsCounter, 0 mSdLazyCounter, 761 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s 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, 2.8s IncrementalHoareTripleChecker+Time [2023-11-19 05:06:37,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 4055 Invalid, 761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 761 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-11-19 05:06:37,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1224 states. [2023-11-19 05:06:37,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1224 to 1215. [2023-11-19 05:06:37,573 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) [2023-11-19 05:06:37,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1215 states to 1215 states and 1755 transitions. [2023-11-19 05:06:37,582 INFO L78 Accepts]: Start accepts. Automaton has 1215 states and 1755 transitions. Word has length 118 [2023-11-19 05:06:37,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:06:37,583 INFO L495 AbstractCegarLoop]: Abstraction has 1215 states and 1755 transitions. [2023-11-19 05:06:37,583 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) [2023-11-19 05:06:37,583 INFO L276 IsEmpty]: Start isEmpty. Operand 1215 states and 1755 transitions. [2023-11-19 05:06:37,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-11-19 05:06:37,592 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:06:37,592 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] [2023-11-19 05:06:37,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 05:06:37,593 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:06:37,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:06:37,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1307742724, now seen corresponding path program 1 times [2023-11-19 05:06:37,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:06:37,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450597325] [2023-11-19 05:06:37,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:06:37,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:06:40,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:06:40,771 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-19 05:06:40,771 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:06:40,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450597325] [2023-11-19 05:06:40,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450597325] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:06:40,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [414095727] [2023-11-19 05:06:40,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:06:40,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:06:40,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3ac469-9fe2-4597-82a9-aa3c7cdb1ac3/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:06:40,778 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3ac469-9fe2-4597-82a9-aa3c7cdb1ac3/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:06:40,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3ac469-9fe2-4597-82a9-aa3c7cdb1ac3/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process