./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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4079230-0c9c-4fd6-a1da-baf2cf20ed9f/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4079230-0c9c-4fd6-a1da-baf2cf20ed9f/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4079230-0c9c-4fd6-a1da-baf2cf20ed9f/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4079230-0c9c-4fd6-a1da-baf2cf20ed9f/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.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_a4079230-0c9c-4fd6-a1da-baf2cf20ed9f/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4079230-0c9c-4fd6-a1da-baf2cf20ed9f/bin/uautomizer-verify-uCwYo4JHxu --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 1b2bc647ca8745ce6966563490eaffac57a1a11e1ae3ccf6c64fee22f81541d7 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:41:49,944 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:41:50,070 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4079230-0c9c-4fd6-a1da-baf2cf20ed9f/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-19 07:41:50,080 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:41:50,081 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:41:50,134 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:41:50,135 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:41:50,136 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:41:50,137 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:41:50,138 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:41:50,139 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:41:50,140 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:41:50,141 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:41:50,145 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:41:50,147 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:41:50,147 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:41:50,148 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:41:50,148 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:41:50,149 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:41:50,150 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:41:50,150 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:41:50,151 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:41:50,152 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:41:50,153 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:41:50,153 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:41:50,154 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:41:50,154 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:41:50,155 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:41:50,155 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:41:50,156 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:41:50,157 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:41:50,175 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:41:50,175 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:41:50,176 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:41:50,176 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:41:50,176 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:41:50,177 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_a4079230-0c9c-4fd6-a1da-baf2cf20ed9f/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4079230-0c9c-4fd6-a1da-baf2cf20ed9f/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b2bc647ca8745ce6966563490eaffac57a1a11e1ae3ccf6c64fee22f81541d7 [2023-11-19 07:41:50,492 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:41:50,526 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:41:50,529 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:41:50,530 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:41:50,531 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:41:50,533 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4079230-0c9c-4fd6-a1da-baf2cf20ed9f/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-usb-serial-whiteheat.ko.cil.out.i [2023-11-19 07:41:53,575 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:41:54,202 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:41:54,203 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4079230-0c9c-4fd6-a1da-baf2cf20ed9f/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-usb-serial-whiteheat.ko.cil.out.i [2023-11-19 07:41:54,266 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4079230-0c9c-4fd6-a1da-baf2cf20ed9f/bin/uautomizer-verify-uCwYo4JHxu/data/e9962f432/68322ea89c06473e997e9d053c3925ea/FLAGe0e4a9a23 [2023-11-19 07:41:54,293 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4079230-0c9c-4fd6-a1da-baf2cf20ed9f/bin/uautomizer-verify-uCwYo4JHxu/data/e9962f432/68322ea89c06473e997e9d053c3925ea [2023-11-19 07:41:54,301 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:41:54,303 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:41:54,306 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:41:54,307 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:41:54,313 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:41:54,314 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:41:54" (1/1) ... [2023-11-19 07:41:54,316 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54b2b943 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:54, skipping insertion in model container [2023-11-19 07:41:54,316 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:41:54" (1/1) ... [2023-11-19 07:41:54,455 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:41:56,280 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_a4079230-0c9c-4fd6-a1da-baf2cf20ed9f/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-usb-serial-whiteheat.ko.cil.out.i[223543,223556] [2023-11-19 07:41:56,347 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:41:56,397 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:41:56,496 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("bswapl %0": "=r" (val): "0" (val)); [3740] [2023-11-19 07:41:56,500 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 07:41:56,501 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 07:41:56,501 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 07:41:56,502 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 07:41:56,841 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_a4079230-0c9c-4fd6-a1da-baf2cf20ed9f/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-usb-serial-whiteheat.ko.cil.out.i[223543,223556] [2023-11-19 07:41:56,853 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:41:56,953 WARN L675 CHandler]: The function __bad_percpu_size is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:41:56,962 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:41:56,963 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:56 WrapperNode [2023-11-19 07:41:56,963 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:41:56,965 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:41:56,965 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:41:56,965 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:41:56,974 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:56" (1/1) ... [2023-11-19 07:41:57,072 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:56" (1/1) ... [2023-11-19 07:41:57,273 INFO L138 Inliner]: procedures = 167, calls = 1492, calls flagged for inlining = 73, calls inlined = 73, statements flattened = 4762 [2023-11-19 07:41:57,273 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:41:57,274 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:41:57,274 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:41:57,274 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:41:57,286 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:56" (1/1) ... [2023-11-19 07:41:57,286 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:56" (1/1) ... [2023-11-19 07:41:57,332 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:56" (1/1) ... [2023-11-19 07:41:57,332 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:56" (1/1) ... [2023-11-19 07:41:57,466 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:56" (1/1) ... [2023-11-19 07:41:57,508 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:56" (1/1) ... [2023-11-19 07:41:57,538 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:56" (1/1) ... [2023-11-19 07:41:57,560 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:56" (1/1) ... [2023-11-19 07:41:57,590 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:41:57,592 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:41:57,592 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:41:57,592 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:41:57,594 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:56" (1/1) ... [2023-11-19 07:41:57,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:41:57,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4079230-0c9c-4fd6-a1da-baf2cf20ed9f/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:57,629 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4079230-0c9c-4fd6-a1da-baf2cf20ed9f/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:57,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4079230-0c9c-4fd6-a1da-baf2cf20ed9f/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:41:57,677 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2023-11-19 07:41:57,678 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2023-11-19 07:41:57,678 INFO L130 BoogieDeclarations]: Found specification of procedure whiteheat_exit [2023-11-19 07:41:57,678 INFO L138 BoogieDeclarations]: Found implementation of procedure whiteheat_exit [2023-11-19 07:41:57,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-19 07:41:57,680 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2023-11-19 07:41:57,681 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2023-11-19 07:41:57,681 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-19 07:41:57,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-19 07:41:57,681 INFO L130 BoogieDeclarations]: Found specification of procedure usb_bulk_msg [2023-11-19 07:41:57,681 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_bulk_msg [2023-11-19 07:41:57,681 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:41:57,682 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_serial_port_data [2023-11-19 07:41:57,682 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_serial_port_data [2023-11-19 07:41:57,682 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-19 07:41:57,682 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-19 07:41:57,682 INFO L130 BoogieDeclarations]: Found specification of procedure ezusb_writememory [2023-11-19 07:41:57,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ezusb_writememory [2023-11-19 07:41:57,683 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2023-11-19 07:41:57,683 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2023-11-19 07:41:57,683 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-19 07:41:57,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-19 07:41:57,684 INFO L130 BoogieDeclarations]: Found specification of procedure firm_send_command [2023-11-19 07:41:57,684 INFO L138 BoogieDeclarations]: Found implementation of procedure firm_send_command [2023-11-19 07:41:57,684 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2023-11-19 07:41:57,684 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2023-11-19 07:41:57,685 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-19 07:41:57,685 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-19 07:41:57,686 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_serial_port_data [2023-11-19 07:41:57,686 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_serial_port_data [2023-11-19 07:41:57,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:41:57,687 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-11-19 07:41:57,687 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-11-19 07:41:57,687 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2023-11-19 07:41:57,687 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2023-11-19 07:41:57,688 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume_stop [2023-11-19 07:41:57,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume_stop [2023-11-19 07:41:57,688 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2023-11-19 07:41:57,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2023-11-19 07:41:57,688 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2023-11-19 07:41:57,688 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2023-11-19 07:41:57,689 INFO L130 BoogieDeclarations]: Found specification of procedure request_ihex_firmware [2023-11-19 07:41:57,689 INFO L138 BoogieDeclarations]: Found implementation of procedure request_ihex_firmware [2023-11-19 07:41:57,689 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_register [2023-11-19 07:41:57,689 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_register [2023-11-19 07:41:57,689 INFO L130 BoogieDeclarations]: Found specification of procedure whiteheat_attach [2023-11-19 07:41:57,689 INFO L138 BoogieDeclarations]: Found implementation of procedure whiteheat_attach [2023-11-19 07:41:57,689 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 07:41:57,690 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_debug_data [2023-11-19 07:41:57,690 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_debug_data [2023-11-19 07:41:57,690 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-11-19 07:41:57,690 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-11-19 07:41:57,690 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2023-11-19 07:41:57,690 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2023-11-19 07:41:57,691 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:41:57,691 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:41:57,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 07:41:57,691 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2023-11-19 07:41:57,691 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2023-11-19 07:41:57,691 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2023-11-19 07:41:57,691 INFO L130 BoogieDeclarations]: Found specification of procedure ihex_next_binrec [2023-11-19 07:41:57,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ihex_next_binrec [2023-11-19 07:41:57,692 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2023-11-19 07:41:57,692 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2023-11-19 07:41:57,693 INFO L130 BoogieDeclarations]: Found specification of procedure ezusb_set_reset [2023-11-19 07:41:57,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ezusb_set_reset [2023-11-19 07:41:57,694 INFO L130 BoogieDeclarations]: Found specification of procedure urb_to_wrap [2023-11-19 07:41:57,694 INFO L138 BoogieDeclarations]: Found implementation of procedure urb_to_wrap [2023-11-19 07:41:57,694 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 07:41:57,694 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2023-11-19 07:41:57,695 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2023-11-19 07:41:57,696 INFO L130 BoogieDeclarations]: Found specification of procedure firm_setup_port [2023-11-19 07:41:57,696 INFO L138 BoogieDeclarations]: Found implementation of procedure firm_setup_port [2023-11-19 07:41:57,696 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-11-19 07:41:57,696 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-11-19 07:41:57,696 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2023-11-19 07:41:57,697 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2023-11-19 07:41:57,697 INFO L130 BoogieDeclarations]: Found specification of procedure list_first [2023-11-19 07:41:57,697 INFO L138 BoogieDeclarations]: Found implementation of procedure list_first [2023-11-19 07:41:57,697 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_blast_assert [2023-11-19 07:41:57,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_blast_assert [2023-11-19 07:41:57,697 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:41:57,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-19 07:41:57,698 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-19 07:41:57,698 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-19 07:41:57,698 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-11-19 07:41:57,698 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-11-19 07:41:57,698 INFO L130 BoogieDeclarations]: Found specification of procedure firm_close [2023-11-19 07:41:57,699 INFO L138 BoogieDeclarations]: Found implementation of procedure firm_close [2023-11-19 07:41:57,699 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2023-11-19 07:41:57,700 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2023-11-19 07:41:57,700 INFO L130 BoogieDeclarations]: Found specification of procedure list_move [2023-11-19 07:41:57,700 INFO L138 BoogieDeclarations]: Found implementation of procedure list_move [2023-11-19 07:41:57,700 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_deregister [2023-11-19 07:41:57,700 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_deregister [2023-11-19 07:41:57,700 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2023-11-19 07:41:57,701 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2023-11-19 07:41:57,701 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2023-11-19 07:41:57,701 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2023-11-19 07:41:57,701 INFO L130 BoogieDeclarations]: Found specification of procedure stop_command_port [2023-11-19 07:41:57,701 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_command_port [2023-11-19 07:41:57,701 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2023-11-19 07:41:57,701 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2023-11-19 07:41:57,702 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2023-11-19 07:41:57,702 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2023-11-19 07:41:57,702 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2023-11-19 07:41:57,702 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2023-11-19 07:41:57,702 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2023-11-19 07:41:57,702 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2023-11-19 07:41:57,702 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undefined_pointer [2023-11-19 07:41:57,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undefined_pointer [2023-11-19 07:41:57,703 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2023-11-19 07:41:57,704 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2023-11-19 07:41:57,704 INFO L130 BoogieDeclarations]: Found specification of procedure release_firmware [2023-11-19 07:41:57,704 INFO L138 BoogieDeclarations]: Found implementation of procedure release_firmware [2023-11-19 07:41:57,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:41:57,704 INFO L130 BoogieDeclarations]: Found specification of procedure usb_clear_halt [2023-11-19 07:41:57,705 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_clear_halt [2023-11-19 07:41:57,705 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2023-11-19 07:41:57,706 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2023-11-19 07:41:57,706 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-19 07:41:57,706 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:41:57,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:41:57,706 INFO L130 BoogieDeclarations]: Found specification of procedure whiteheat_init [2023-11-19 07:41:57,707 INFO L138 BoogieDeclarations]: Found implementation of procedure whiteheat_init [2023-11-19 07:41:58,348 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:41:58,352 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:41:58,721 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-19 07:41:58,971 INFO L767 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume !false; [2023-11-19 07:41:58,971 INFO L767 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##25: assume false; [2023-11-19 07:41:58,985 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-19 07:41:59,106 INFO L767 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##35: assume !false; [2023-11-19 07:41:59,106 INFO L767 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##34: assume false; [2023-11-19 07:41:59,185 INFO L767 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_assume_stopFINAL: assume true; [2023-11-19 07:41:59,709 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-19 07:41:59,739 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-19 07:42:02,015 INFO L767 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##395: assume !false; [2023-11-19 07:42:02,015 INFO L767 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##394: assume false; [2023-11-19 07:42:02,016 INFO L767 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##54: assume !false; [2023-11-19 07:42:02,016 INFO L767 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##53: assume false; [2023-11-19 07:42:02,120 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:42:02,140 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:42:02,141 INFO L302 CfgBuilder]: Removed 94 assume(true) statements. [2023-11-19 07:42:02,151 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:42:02 BoogieIcfgContainer [2023-11-19 07:42:02,151 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:42:02,153 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:42:02,153 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:42:02,156 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:42:02,157 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:41:54" (1/3) ... [2023-11-19 07:42:02,158 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73e2dc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:42:02, skipping insertion in model container [2023-11-19 07:42:02,158 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:56" (2/3) ... [2023-11-19 07:42:02,158 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73e2dc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:42:02, skipping insertion in model container [2023-11-19 07:42:02,158 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:42:02" (3/3) ... [2023-11-19 07:42:02,160 INFO L112 eAbstractionObserver]: Analyzing ICFG usb_urb-drivers-usb-serial-whiteheat.ko.cil.out.i [2023-11-19 07:42:02,180 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:42:02,181 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:42:02,266 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:42:02,273 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=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;@5249faf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:42:02,273 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 07:42:02,284 INFO L276 IsEmpty]: Start isEmpty. Operand has 1307 states, 932 states have (on average 1.4731759656652361) internal successors, (1373), 957 states have internal predecessors, (1373), 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 07:42:02,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-19 07:42:02,293 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:42:02,293 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:42:02,294 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:42:02,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:42:02,300 INFO L85 PathProgramCache]: Analyzing trace with hash 2112461329, now seen corresponding path program 1 times [2023-11-19 07:42:02,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:42:02,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757942679] [2023-11-19 07:42:02,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:42:02,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:42:06,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:06,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 07:42:06,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:06,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 07:42:06,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:06,707 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 07:42:06,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:42:06,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757942679] [2023-11-19 07:42:06,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757942679] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:42:06,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:42:06,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:42:06,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76428522] [2023-11-19 07:42:06,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:42:06,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:42:06,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:42:06,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:42:06,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:42:06,762 INFO L87 Difference]: Start difference. First operand has 1307 states, 932 states have (on average 1.4731759656652361) internal successors, (1373), 957 states have internal predecessors, (1373), 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 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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 07:42:07,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:42:07,209 INFO L93 Difference]: Finished difference Result 3853 states and 6036 transitions. [2023-11-19 07:42:07,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:42:07,212 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 3 states have call successors, (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 20 [2023-11-19 07:42:07,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:42:07,268 INFO L225 Difference]: With dead ends: 3853 [2023-11-19 07:42:07,268 INFO L226 Difference]: Without dead ends: 2564 [2023-11-19 07:42:07,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 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 07:42:07,288 INFO L413 NwaCegarLoop]: 1870 mSDtfsCounter, 1791 mSDsluCounter, 1758 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1791 SdHoareTripleChecker+Valid, 3628 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:42:07,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1791 Valid, 3628 Invalid, 10 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:42:07,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2564 states. [2023-11-19 07:42:07,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2564 to 2561. [2023-11-19 07:42:07,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2561 states, 1829 states have (on average 1.2547840349917987) internal successors, (2295), 1864 states have internal predecessors, (2295), 629 states have call successors, (629), 103 states have call predecessors, (629), 102 states have return successors, (630), 620 states have call predecessors, (630), 626 states have call successors, (630) [2023-11-19 07:42:07,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2561 states to 2561 states and 3554 transitions. [2023-11-19 07:42:07,620 INFO L78 Accepts]: Start accepts. Automaton has 2561 states and 3554 transitions. Word has length 20 [2023-11-19 07:42:07,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:42:07,621 INFO L495 AbstractCegarLoop]: Abstraction has 2561 states and 3554 transitions. [2023-11-19 07:42:07,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 3 states have call successors, (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 07:42:07,621 INFO L276 IsEmpty]: Start isEmpty. Operand 2561 states and 3554 transitions. [2023-11-19 07:42:07,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-19 07:42:07,623 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:42:07,623 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:42:07,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:42:07,624 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:42:07,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:42:07,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1061196666, now seen corresponding path program 1 times [2023-11-19 07:42:07,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:42:07,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524297859] [2023-11-19 07:42:07,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:42:07,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:42:11,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:11,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 07:42:11,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:11,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 07:42:11,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:11,689 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 07:42:11,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:42:11,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524297859] [2023-11-19 07:42:11,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524297859] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:42:11,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:42:11,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:42:11,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103063959] [2023-11-19 07:42:11,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:42:11,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:42:11,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:42:11,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:42:11,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:42:11,700 INFO L87 Difference]: Start difference. First operand 2561 states and 3554 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 3 states have call successors, (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 07:42:11,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:42:11,834 INFO L93 Difference]: Finished difference Result 2563 states and 3555 transitions. [2023-11-19 07:42:11,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:42:11,834 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 3 states have call successors, (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 21 [2023-11-19 07:42:11,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:42:11,857 INFO L225 Difference]: With dead ends: 2563 [2023-11-19 07:42:11,858 INFO L226 Difference]: Without dead ends: 2550 [2023-11-19 07:42:11,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 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 07:42:11,864 INFO L413 NwaCegarLoop]: 1794 mSDtfsCounter, 1786 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1786 SdHoareTripleChecker+Valid, 1794 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:42:11,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1786 Valid, 1794 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:42:11,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2550 states. [2023-11-19 07:42:12,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2550 to 2550. [2023-11-19 07:42:12,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2550 states, 1823 states have (on average 1.2528798683488755) internal successors, (2284), 1856 states have internal predecessors, (2284), 625 states have call successors, (625), 102 states have call predecessors, (625), 101 states have return successors, (627), 617 states have call predecessors, (627), 623 states have call successors, (627) [2023-11-19 07:42:12,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2550 states to 2550 states and 3536 transitions. [2023-11-19 07:42:12,047 INFO L78 Accepts]: Start accepts. Automaton has 2550 states and 3536 transitions. Word has length 21 [2023-11-19 07:42:12,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:42:12,049 INFO L495 AbstractCegarLoop]: Abstraction has 2550 states and 3536 transitions. [2023-11-19 07:42:12,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 3 states have call successors, (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 07:42:12,049 INFO L276 IsEmpty]: Start isEmpty. Operand 2550 states and 3536 transitions. [2023-11-19 07:42:12,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-11-19 07:42:12,070 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:42:12,071 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] [2023-11-19 07:42:12,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:42:12,071 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:42:12,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:42:12,072 INFO L85 PathProgramCache]: Analyzing trace with hash -592528824, now seen corresponding path program 1 times [2023-11-19 07:42:12,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:42:12,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335963935] [2023-11-19 07:42:12,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:42:12,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:42:15,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:15,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 07:42:15,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:15,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 07:42:15,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:15,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-19 07:42:15,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:15,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 07:42:15,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:15,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-19 07:42:15,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:15,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 07:42:15,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:15,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-19 07:42:15,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:15,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-19 07:42:15,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:16,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-19 07:42:16,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:16,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-19 07:42:16,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:16,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-19 07:42:16,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:16,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-19 07:42:16,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:16,069 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-19 07:42:16,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:42:16,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335963935] [2023-11-19 07:42:16,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335963935] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:42:16,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:42:16,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:42:16,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080735731] [2023-11-19 07:42:16,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:42:16,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:42:16,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:42:16,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:42:16,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:42:16,074 INFO L87 Difference]: Start difference. First operand 2550 states and 3536 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (14), 5 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 07:42:19,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:42:19,489 INFO L93 Difference]: Finished difference Result 6069 states and 8539 transitions. [2023-11-19 07:42:19,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:42:19,490 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (14), 5 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 107 [2023-11-19 07:42:19,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:42:19,525 INFO L225 Difference]: With dead ends: 6069 [2023-11-19 07:42:19,526 INFO L226 Difference]: Without dead ends: 3547 [2023-11-19 07:42:19,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:42:19,552 INFO L413 NwaCegarLoop]: 1821 mSDtfsCounter, 1095 mSDsluCounter, 2405 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 1252 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1281 SdHoareTripleChecker+Valid, 4226 SdHoareTripleChecker+Invalid, 2333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1252 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:42:19,554 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1281 Valid, 4226 Invalid, 2333 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1252 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-11-19 07:42:19,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3547 states. [2023-11-19 07:42:19,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3547 to 3494. [2023-11-19 07:42:19,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3494 states, 2510 states have (on average 1.2597609561752987) internal successors, (3162), 2558 states have internal predecessors, (3162), 879 states have call successors, (879), 102 states have call predecessors, (879), 104 states have return successors, (890), 867 states have call predecessors, (890), 877 states have call successors, (890) [2023-11-19 07:42:19,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3494 states to 3494 states and 4931 transitions. [2023-11-19 07:42:19,897 INFO L78 Accepts]: Start accepts. Automaton has 3494 states and 4931 transitions. Word has length 107 [2023-11-19 07:42:19,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:42:19,898 INFO L495 AbstractCegarLoop]: Abstraction has 3494 states and 4931 transitions. [2023-11-19 07:42:19,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (14), 5 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 07:42:19,899 INFO L276 IsEmpty]: Start isEmpty. Operand 3494 states and 4931 transitions. [2023-11-19 07:42:19,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-11-19 07:42:19,918 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:42:19,918 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:42:19,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:42:19,919 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:42:19,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:42:19,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1258542736, now seen corresponding path program 1 times [2023-11-19 07:42:19,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:42:19,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532527335] [2023-11-19 07:42:19,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:42:19,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:42:22,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:23,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 07:42:23,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:23,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 07:42:23,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:23,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-19 07:42:23,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:23,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-19 07:42:23,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:23,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-19 07:42:23,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:23,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-19 07:42:23,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:23,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-19 07:42:23,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:23,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 07:42:23,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:23,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-19 07:42:23,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:23,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 07:42:23,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:23,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-19 07:42:23,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:23,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-19 07:42:23,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:23,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-11-19 07:42:23,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:23,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-11-19 07:42:23,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:23,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-11-19 07:42:23,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:23,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-11-19 07:42:23,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:23,381 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-19 07:42:23,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:42:23,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532527335] [2023-11-19 07:42:23,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532527335] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:42:23,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:42:23,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-19 07:42:23,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907040453] [2023-11-19 07:42:23,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:42:23,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:42:23,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:42:23,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:42:23,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:42:23,386 INFO L87 Difference]: Start difference. First operand 3494 states and 4931 transitions. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 5 states have internal predecessors, (103), 3 states have call successors, (18), 5 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 07:42:27,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:42:27,810 INFO L93 Difference]: Finished difference Result 9289 states and 13296 transitions. [2023-11-19 07:42:27,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:42:27,811 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 5 states have internal predecessors, (103), 3 states have call successors, (18), 5 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 151 [2023-11-19 07:42:27,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:42:27,862 INFO L225 Difference]: With dead ends: 9289 [2023-11-19 07:42:27,862 INFO L226 Difference]: Without dead ends: 5824 [2023-11-19 07:42:27,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-11-19 07:42:27,879 INFO L413 NwaCegarLoop]: 2424 mSDtfsCounter, 1281 mSDsluCounter, 6924 mSDsCounter, 0 mSdLazyCounter, 2500 mSolverCounterSat, 1135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1500 SdHoareTripleChecker+Valid, 9348 SdHoareTripleChecker+Invalid, 3635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1135 IncrementalHoareTripleChecker+Valid, 2500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-11-19 07:42:27,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1500 Valid, 9348 Invalid, 3635 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1135 Valid, 2500 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-11-19 07:42:27,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5824 states. [2023-11-19 07:42:28,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5824 to 3502. [2023-11-19 07:42:28,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3502 states, 2516 states have (on average 1.259141494435612) internal successors, (3168), 2564 states have internal predecessors, (3168), 881 states have call successors, (881), 102 states have call predecessors, (881), 104 states have return successors, (892), 869 states have call predecessors, (892), 879 states have call successors, (892) [2023-11-19 07:42:28,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3502 states to 3502 states and 4941 transitions. [2023-11-19 07:42:28,198 INFO L78 Accepts]: Start accepts. Automaton has 3502 states and 4941 transitions. Word has length 151 [2023-11-19 07:42:28,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:42:28,199 INFO L495 AbstractCegarLoop]: Abstraction has 3502 states and 4941 transitions. [2023-11-19 07:42:28,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 5 states have internal predecessors, (103), 3 states have call successors, (18), 5 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 07:42:28,199 INFO L276 IsEmpty]: Start isEmpty. Operand 3502 states and 4941 transitions. [2023-11-19 07:42:28,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-11-19 07:42:28,211 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:42:28,212 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:42:28,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:42:28,212 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:42:28,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:42:28,213 INFO L85 PathProgramCache]: Analyzing trace with hash 103237581, now seen corresponding path program 1 times [2023-11-19 07:42:28,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:42:28,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412492244] [2023-11-19 07:42:28,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:42:28,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:42:31,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:32,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 07:42:32,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:32,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 07:42:32,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:32,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-19 07:42:32,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:32,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-19 07:42:32,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:32,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 07:42:32,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:32,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-19 07:42:32,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:32,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 07:42:32,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:32,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-19 07:42:32,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:32,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-19 07:42:32,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:32,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-19 07:42:32,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:32,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-19 07:42:32,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:32,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-19 07:42:32,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:32,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-19 07:42:32,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:32,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 07:42:32,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:32,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-19 07:42:32,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:32,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-11-19 07:42:32,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:32,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-11-19 07:42:32,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:32,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-11-19 07:42:32,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:32,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-19 07:42:32,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:32,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-11-19 07:42:32,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:32,820 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-19 07:42:32,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:42:32,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412492244] [2023-11-19 07:42:32,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412492244] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:42:32,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1113987347] [2023-11-19 07:42:32,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:42:32,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:42:32,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4079230-0c9c-4fd6-a1da-baf2cf20ed9f/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:42:32,825 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4079230-0c9c-4fd6-a1da-baf2cf20ed9f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:42:32,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4079230-0c9c-4fd6-a1da-baf2cf20ed9f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:42:36,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:36,898 INFO L262 TraceCheckSpWp]: Trace formula consists of 3328 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-19 07:42:36,915 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:42:37,057 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-19 07:42:37,057 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:42:37,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1113987347] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:42:37,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:42:37,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 12 [2023-11-19 07:42:37,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662553462] [2023-11-19 07:42:37,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:42:37,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:42:37,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:42:37,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:42:37,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2023-11-19 07:42:37,062 INFO L87 Difference]: Start difference. First operand 3502 states and 4941 transitions. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 6 states have internal predecessors, (109), 2 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 2 states have call successors, (20) [2023-11-19 07:42:37,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:42:37,403 INFO L93 Difference]: Finished difference Result 6997 states and 9904 transitions. [2023-11-19 07:42:37,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:42:37,404 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 6 states have internal predecessors, (109), 2 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 2 states have call successors, (20) Word has length 160 [2023-11-19 07:42:37,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:42:37,434 INFO L225 Difference]: With dead ends: 6997 [2023-11-19 07:42:37,434 INFO L226 Difference]: Without dead ends: 3524 [2023-11-19 07:42:37,451 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:42:37,451 INFO L413 NwaCegarLoop]: 1794 mSDtfsCounter, 5 mSDsluCounter, 10753 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 12547 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:42:37,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 12547 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:42:37,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3524 states. [2023-11-19 07:42:37,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3524 to 3520. [2023-11-19 07:42:37,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3520 states, 2529 states have (on average 1.2578094108343219) internal successors, (3181), 2576 states have internal predecessors, (3181), 882 states have call successors, (882), 102 states have call predecessors, (882), 108 states have return successors, (917), 874 states have call predecessors, (917), 880 states have call successors, (917) [2023-11-19 07:42:37,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3520 states to 3520 states and 4980 transitions. [2023-11-19 07:42:37,743 INFO L78 Accepts]: Start accepts. Automaton has 3520 states and 4980 transitions. Word has length 160 [2023-11-19 07:42:37,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:42:37,745 INFO L495 AbstractCegarLoop]: Abstraction has 3520 states and 4980 transitions. [2023-11-19 07:42:37,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 6 states have internal predecessors, (109), 2 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 2 states have call successors, (20) [2023-11-19 07:42:37,746 INFO L276 IsEmpty]: Start isEmpty. Operand 3520 states and 4980 transitions. [2023-11-19 07:42:37,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-11-19 07:42:37,758 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:42:37,758 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:42:37,795 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4079230-0c9c-4fd6-a1da-baf2cf20ed9f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:42:37,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4079230-0c9c-4fd6-a1da-baf2cf20ed9f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:42:37,972 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:42:37,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:42:37,973 INFO L85 PathProgramCache]: Analyzing trace with hash -883345108, now seen corresponding path program 1 times [2023-11-19 07:42:37,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:42:37,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117672147] [2023-11-19 07:42:37,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:42:37,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:42:40,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat