./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--isdn--hisax--hfc_usb.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 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_336fd058-7c70-44b8-aa04-2a7e66f89d00/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_336fd058-7c70-44b8-aa04-2a7e66f89d00/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_336fd058-7c70-44b8-aa04-2a7e66f89d00/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_336fd058-7c70-44b8-aa04-2a7e66f89d00/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--isdn--hisax--hfc_usb.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_336fd058-7c70-44b8-aa04-2a7e66f89d00/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_336fd058-7c70-44b8-aa04-2a7e66f89d00/bin/uautomizer-verify-uTZkv6EMXl --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 8cfca91e359676f221b9d3196f23901e359124e72b956d963114c00faf4f7248 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:23:16,921 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:23:17,039 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_336fd058-7c70-44b8-aa04-2a7e66f89d00/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-12 02:23:17,043 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:23:17,050 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:23:17,081 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:23:17,081 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:23:17,082 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:23:17,083 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:23:17,088 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:23:17,090 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:23:17,090 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:23:17,091 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:23:17,093 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:23:17,093 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:23:17,094 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:23:17,094 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:23:17,095 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:23:17,095 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:23:17,096 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:23:17,096 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:23:17,097 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:23:17,098 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:23:17,098 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:23:17,099 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:23:17,099 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:23:17,100 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:23:17,100 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:23:17,100 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:23:17,101 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:23:17,102 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:23:17,102 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:23:17,103 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:23:17,103 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:23:17,103 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:23:17,104 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:23:17,104 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_336fd058-7c70-44b8-aa04-2a7e66f89d00/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_336fd058-7c70-44b8-aa04-2a7e66f89d00/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8cfca91e359676f221b9d3196f23901e359124e72b956d963114c00faf4f7248 [2023-11-12 02:23:17,402 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:23:17,435 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:23:17,439 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:23:17,440 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:23:17,441 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:23:17,442 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_336fd058-7c70-44b8-aa04-2a7e66f89d00/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--isdn--hisax--hfc_usb.ko-entry_point.cil.out.i [2023-11-12 02:23:20,469 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:23:21,198 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:23:21,199 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_336fd058-7c70-44b8-aa04-2a7e66f89d00/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--isdn--hisax--hfc_usb.ko-entry_point.cil.out.i [2023-11-12 02:23:21,260 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_336fd058-7c70-44b8-aa04-2a7e66f89d00/bin/uautomizer-verify-uTZkv6EMXl/data/0dbad8c5d/cacc220ec85a4721b15aa248674d228b/FLAGe465fdbc8 [2023-11-12 02:23:21,612 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_336fd058-7c70-44b8-aa04-2a7e66f89d00/bin/uautomizer-verify-uTZkv6EMXl/data/0dbad8c5d/cacc220ec85a4721b15aa248674d228b [2023-11-12 02:23:21,615 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:23:21,617 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:23:21,618 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:23:21,622 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:23:21,630 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:23:21,630 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:23:21" (1/1) ... [2023-11-12 02:23:21,631 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5029d2bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:23:21, skipping insertion in model container [2023-11-12 02:23:21,632 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:23:21" (1/1) ... [2023-11-12 02:23:21,768 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:23:22,503 WARN L1270 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [6708] [2023-11-12 02:23:22,505 WARN L1270 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [6709-6710] [2023-11-12 02:23:22,714 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_336fd058-7c70-44b8-aa04-2a7e66f89d00/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--isdn--hisax--hfc_usb.ko-entry_point.cil.out.i[192641,192654] [2023-11-12 02:23:23,578 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:23:23,648 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:23:23,840 WARN L1270 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [6708] [2023-11-12 02:23:23,841 WARN L1270 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [6709-6710] [2023-11-12 02:23:23,847 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_336fd058-7c70-44b8-aa04-2a7e66f89d00/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--isdn--hisax--hfc_usb.ko-entry_point.cil.out.i[192641,192654] [2023-11-12 02:23:24,044 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:23:24,116 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:23:24,117 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:23:24 WrapperNode [2023-11-12 02:23:24,117 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:23:24,118 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:23:24,119 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:23:24,119 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:23:24,127 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:23:24" (1/1) ... [2023-11-12 02:23:24,193 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:23:24" (1/1) ... [2023-11-12 02:23:24,352 INFO L138 Inliner]: procedures = 151, calls = 1597, calls flagged for inlining = 53, calls inlined = 38, statements flattened = 2370 [2023-11-12 02:23:24,353 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:23:24,353 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:23:24,354 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:23:24,354 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:23:24,363 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:23:24" (1/1) ... [2023-11-12 02:23:24,364 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:23:24" (1/1) ... [2023-11-12 02:23:24,382 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:23:24" (1/1) ... [2023-11-12 02:23:24,382 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:23:24" (1/1) ... [2023-11-12 02:23:24,456 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:23:24" (1/1) ... [2023-11-12 02:23:24,471 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:23:24" (1/1) ... [2023-11-12 02:23:24,508 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:23:24" (1/1) ... [2023-11-12 02:23:24,522 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:23:24" (1/1) ... [2023-11-12 02:23:24,548 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:23:24,553 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:23:24,553 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:23:24,553 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:23:24,555 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:23:24" (1/1) ... [2023-11-12 02:23:24,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:23:24,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_336fd058-7c70-44b8-aa04-2a7e66f89d00/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:23:24,589 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_336fd058-7c70-44b8-aa04-2a7e66f89d00/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:23:24,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_336fd058-7c70-44b8-aa04-2a7e66f89d00/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:23:24,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-12 02:23:24,632 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2023-11-12 02:23:24,632 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2023-11-12 02:23:24,632 INFO L130 BoogieDeclarations]: Found specification of procedure handle_led [2023-11-12 02:23:24,633 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_led [2023-11-12 02:23:24,633 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-12 02:23:24,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-12 02:23:24,634 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-12 02:23:24,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-12 02:23:24,634 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 02:23:24,634 INFO L130 BoogieDeclarations]: Found specification of procedure start_int_fifo [2023-11-12 02:23:24,636 INFO L138 BoogieDeclarations]: Found implementation of procedure start_int_fifo [2023-11-12 02:23:24,636 INFO L130 BoogieDeclarations]: Found specification of procedure symbolic [2023-11-12 02:23:24,636 INFO L138 BoogieDeclarations]: Found implementation of procedure symbolic [2023-11-12 02:23:24,637 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-12 02:23:24,637 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-12 02:23:24,637 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2023-11-12 02:23:24,637 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2023-11-12 02:23:24,637 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-12 02:23:24,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-12 02:23:24,638 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2023-11-12 02:23:24,638 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2023-11-12 02:23:24,638 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2023-11-12 02:23:24,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2023-11-12 02:23:24,639 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-12 02:23:24,639 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-12 02:23:24,639 INFO L130 BoogieDeclarations]: Found specification of procedure start_isoc_chain [2023-11-12 02:23:24,639 INFO L138 BoogieDeclarations]: Found implementation of procedure start_isoc_chain [2023-11-12 02:23:24,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:23:24,640 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-12 02:23:24,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-12 02:23:24,641 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-12 02:23:24,641 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-12 02:23:24,642 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-12 02:23:24,642 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-12 02:23:24,642 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2023-11-12 02:23:24,642 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2023-11-12 02:23:24,642 INFO L130 BoogieDeclarations]: Found specification of procedure timer_pending [2023-11-12 02:23:24,642 INFO L138 BoogieDeclarations]: Found implementation of procedure timer_pending [2023-11-12 02:23:24,643 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 02:23:24,643 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_1 [2023-11-12 02:23:24,643 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_1 [2023-11-12 02:23:24,643 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:23:24,643 INFO L130 BoogieDeclarations]: Found specification of procedure set_led_bit [2023-11-12 02:23:24,643 INFO L138 BoogieDeclarations]: Found implementation of procedure set_led_bit [2023-11-12 02:23:24,644 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:23:24,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-12 02:23:24,644 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_1 [2023-11-12 02:23:24,644 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_1 [2023-11-12 02:23:24,644 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-12 02:23:24,644 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2023-11-12 02:23:24,645 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2023-11-12 02:23:24,645 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2023-11-12 02:23:24,645 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2023-11-12 02:23:24,645 INFO L130 BoogieDeclarations]: Found specification of procedure ctrl_start_transfer [2023-11-12 02:23:24,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ctrl_start_transfer [2023-11-12 02:23:24,645 INFO L130 BoogieDeclarations]: Found specification of procedure queue_control_request [2023-11-12 02:23:24,646 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_control_request [2023-11-12 02:23:24,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:23:24,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-12 02:23:24,646 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-12 02:23:24,646 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-12 02:23:24,646 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~TO~VOID [2023-11-12 02:23:24,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~TO~VOID [2023-11-12 02:23:24,647 INFO L130 BoogieDeclarations]: Found specification of procedure fill_isoc_urb [2023-11-12 02:23:24,647 INFO L138 BoogieDeclarations]: Found implementation of procedure fill_isoc_urb [2023-11-12 02:23:24,648 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2023-11-12 02:23:24,648 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2023-11-12 02:23:24,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:23:24,649 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2023-11-12 02:23:24,650 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2023-11-12 02:23:24,650 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-12 02:23:24,650 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2023-11-12 02:23:24,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2023-11-12 02:23:24,650 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:23:24,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:23:25,067 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:23:25,070 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:23:25,576 INFO L770 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-12 02:23:30,560 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:23:30,580 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:23:30,581 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-12 02:23:30,584 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:23:30 BoogieIcfgContainer [2023-11-12 02:23:30,585 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:23:30,589 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:23:30,589 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:23:30,592 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:23:30,592 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:23:21" (1/3) ... [2023-11-12 02:23:30,593 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2512250b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:23:30, skipping insertion in model container [2023-11-12 02:23:30,593 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:23:24" (2/3) ... [2023-11-12 02:23:30,595 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2512250b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:23:30, skipping insertion in model container [2023-11-12 02:23:30,596 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:23:30" (3/3) ... [2023-11-12 02:23:30,598 INFO L112 eAbstractionObserver]: Analyzing ICFG 43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--isdn--hisax--hfc_usb.ko-entry_point.cil.out.i [2023-11-12 02:23:30,618 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:23:30,618 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 02:23:30,700 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:23:30,707 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;@5243f1da, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:23:30,707 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 02:23:30,715 INFO L276 IsEmpty]: Start isEmpty. Operand has 600 states, 443 states have (on average 1.363431151241535) internal successors, (604), 451 states have internal predecessors, (604), 126 states have call successors, (126), 30 states have call predecessors, (126), 29 states have return successors, (123), 123 states have call predecessors, (123), 123 states have call successors, (123) [2023-11-12 02:23:30,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-12 02:23:30,745 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:23:30,746 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:23:30,747 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:23:30,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:23:30,754 INFO L85 PathProgramCache]: Analyzing trace with hash -266356202, now seen corresponding path program 1 times [2023-11-12 02:23:30,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:23:30,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396533492] [2023-11-12 02:23:30,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:23:30,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:23:31,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:23:31,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-12 02:23:31,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:23:31,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-12 02:23:31,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:23:31,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:23:31,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:23:31,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396533492] [2023-11-12 02:23:31,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396533492] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:23:31,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:23:31,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:23:31,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629285755] [2023-11-12 02:23:31,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:23:31,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:23:31,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:23:31,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:23:31,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:23:31,596 INFO L87 Difference]: Start difference. First operand has 600 states, 443 states have (on average 1.363431151241535) internal successors, (604), 451 states have internal predecessors, (604), 126 states have call successors, (126), 30 states have call predecessors, (126), 29 states have return successors, (123), 123 states have call predecessors, (123), 123 states have call successors, (123) Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-12 02:23:36,286 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 02:23:38,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:23:38,485 INFO L93 Difference]: Finished difference Result 1285 states and 1858 transitions. [2023-11-12 02:23:38,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:23:38,488 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 34 [2023-11-12 02:23:38,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:23:38,511 INFO L225 Difference]: With dead ends: 1285 [2023-11-12 02:23:38,528 INFO L226 Difference]: Without dead ends: 665 [2023-11-12 02:23:38,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:23:38,542 INFO L413 NwaCegarLoop]: 690 mSDtfsCounter, 218 mSDsluCounter, 884 mSDsCounter, 0 mSdLazyCounter, 708 mSolverCounterSat, 139 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 1574 SdHoareTripleChecker+Invalid, 848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 708 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2023-11-12 02:23:38,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 1574 Invalid, 848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 708 Invalid, 1 Unknown, 0 Unchecked, 6.7s Time] [2023-11-12 02:23:38,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2023-11-12 02:23:38,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 625. [2023-11-12 02:23:38,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 625 states, 466 states have (on average 1.3454935622317596) internal successors, (627), 470 states have internal predecessors, (627), 126 states have call successors, (126), 33 states have call predecessors, (126), 32 states have return successors, (125), 124 states have call predecessors, (125), 125 states have call successors, (125) [2023-11-12 02:23:38,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 878 transitions. [2023-11-12 02:23:38,674 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 878 transitions. Word has length 34 [2023-11-12 02:23:38,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:23:38,675 INFO L495 AbstractCegarLoop]: Abstraction has 625 states and 878 transitions. [2023-11-12 02:23:38,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-12 02:23:38,676 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 878 transitions. [2023-11-12 02:23:38,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-11-12 02:23:38,682 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:23:38,682 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:23:38,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:23:38,685 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:23:38,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:23:38,689 INFO L85 PathProgramCache]: Analyzing trace with hash -696202108, now seen corresponding path program 1 times [2023-11-12 02:23:38,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:23:38,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670898815] [2023-11-12 02:23:38,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:23:38,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:23:38,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:23:39,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-12 02:23:39,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:23:39,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-12 02:23:39,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:23:39,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-12 02:23:39,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:23:39,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-12 02:23:39,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:23:39,126 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-12 02:23:39,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:23:39,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670898815] [2023-11-12 02:23:39,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670898815] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:23:39,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:23:39,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:23:39,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656561667] [2023-11-12 02:23:39,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:23:39,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:23:39,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:23:39,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:23:39,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:23:39,131 INFO L87 Difference]: Start difference. First operand 625 states and 878 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-12 02:23:43,606 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 02:23:45,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:23:45,872 INFO L93 Difference]: Finished difference Result 1283 states and 1812 transitions. [2023-11-12 02:23:45,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:23:45,873 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 59 [2023-11-12 02:23:45,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:23:45,881 INFO L225 Difference]: With dead ends: 1283 [2023-11-12 02:23:45,881 INFO L226 Difference]: Without dead ends: 674 [2023-11-12 02:23:45,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:23:45,886 INFO L413 NwaCegarLoop]: 677 mSDtfsCounter, 151 mSDsluCounter, 869 mSDsCounter, 0 mSdLazyCounter, 706 mSolverCounterSat, 126 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 1546 SdHoareTripleChecker+Invalid, 833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 706 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2023-11-12 02:23:45,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 1546 Invalid, 833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 706 Invalid, 1 Unknown, 0 Unchecked, 6.6s Time] [2023-11-12 02:23:45,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states. [2023-11-12 02:23:45,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 634. [2023-11-12 02:23:45,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 634 states, 474 states have (on average 1.3459915611814346) internal successors, (638), 478 states have internal predecessors, (638), 127 states have call successors, (127), 33 states have call predecessors, (127), 32 states have return successors, (126), 125 states have call predecessors, (126), 126 states have call successors, (126) [2023-11-12 02:23:45,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 891 transitions. [2023-11-12 02:23:45,973 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 891 transitions. Word has length 59 [2023-11-12 02:23:45,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:23:45,975 INFO L495 AbstractCegarLoop]: Abstraction has 634 states and 891 transitions. [2023-11-12 02:23:45,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-12 02:23:45,976 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 891 transitions. [2023-11-12 02:23:45,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-12 02:23:45,981 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:23:45,981 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:23:45,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:23:45,982 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:23:45,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:23:45,983 INFO L85 PathProgramCache]: Analyzing trace with hash 589304122, now seen corresponding path program 1 times [2023-11-12 02:23:45,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:23:45,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407739108] [2023-11-12 02:23:45,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:23:45,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:23:46,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:23:46,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-12 02:23:46,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:23:46,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-12 02:23:46,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:23:46,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-12 02:23:46,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:23:46,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-12 02:23:46,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:23:46,342 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-12 02:23:46,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:23:46,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407739108] [2023-11-12 02:23:46,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407739108] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:23:46,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:23:46,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:23:46,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726980173] [2023-11-12 02:23:46,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:23:46,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:23:46,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:23:46,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:23:46,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:23:46,345 INFO L87 Difference]: Start difference. First operand 634 states and 891 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-12 02:23:50,472 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 02:23:52,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:23:52,597 INFO L93 Difference]: Finished difference Result 1334 states and 1892 transitions. [2023-11-12 02:23:52,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:23:52,598 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 65 [2023-11-12 02:23:52,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:23:52,604 INFO L225 Difference]: With dead ends: 1334 [2023-11-12 02:23:52,604 INFO L226 Difference]: Without dead ends: 716 [2023-11-12 02:23:52,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:23:52,608 INFO L413 NwaCegarLoop]: 672 mSDtfsCounter, 201 mSDsluCounter, 865 mSDsCounter, 0 mSdLazyCounter, 710 mSolverCounterSat, 127 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 1537 SdHoareTripleChecker+Invalid, 838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 710 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2023-11-12 02:23:52,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 1537 Invalid, 838 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 710 Invalid, 1 Unknown, 0 Unchecked, 6.2s Time] [2023-11-12 02:23:52,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2023-11-12 02:23:52,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 676. [2023-11-12 02:23:52,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 676 states, 514 states have (on average 1.359922178988327) internal successors, (699), 518 states have internal predecessors, (699), 129 states have call successors, (129), 33 states have call predecessors, (129), 32 states have return successors, (128), 127 states have call predecessors, (128), 128 states have call successors, (128) [2023-11-12 02:23:52,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 676 states to 676 states and 956 transitions. [2023-11-12 02:23:52,648 INFO L78 Accepts]: Start accepts. Automaton has 676 states and 956 transitions. Word has length 65 [2023-11-12 02:23:52,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:23:52,649 INFO L495 AbstractCegarLoop]: Abstraction has 676 states and 956 transitions. [2023-11-12 02:23:52,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-12 02:23:52,649 INFO L276 IsEmpty]: Start isEmpty. Operand 676 states and 956 transitions. [2023-11-12 02:23:52,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-11-12 02:23:52,651 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:23:52,651 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-12 02:23:52,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:23:52,652 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:23:52,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:23:52,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1244618685, now seen corresponding path program 1 times [2023-11-12 02:23:52,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:23:52,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418754567] [2023-11-12 02:23:52,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:23:52,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:23:52,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:23:53,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-12 02:23:53,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:23:53,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-12 02:23:53,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:23:53,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-12 02:23:53,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:23:53,059 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-12 02:23:53,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:23:53,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418754567] [2023-11-12 02:23:53,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418754567] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:23:53,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:23:53,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:23:53,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560696995] [2023-11-12 02:23:53,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:23:53,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:23:53,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:23:53,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:23:53,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:23:53,068 INFO L87 Difference]: Start difference. First operand 676 states and 956 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-12 02:23:57,190 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 02:23:59,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:23:59,262 INFO L93 Difference]: Finished difference Result 1529 states and 2161 transitions. [2023-11-12 02:23:59,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:23:59,265 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 73 [2023-11-12 02:23:59,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:23:59,273 INFO L225 Difference]: With dead ends: 1529 [2023-11-12 02:23:59,273 INFO L226 Difference]: Without dead ends: 869 [2023-11-12 02:23:59,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:23:59,278 INFO L413 NwaCegarLoop]: 758 mSDtfsCounter, 807 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 762 mSolverCounterSat, 156 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 877 SdHoareTripleChecker+Valid, 1250 SdHoareTripleChecker+Invalid, 919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 762 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:23:59,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [877 Valid, 1250 Invalid, 919 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 762 Invalid, 1 Unknown, 0 Unchecked, 6.1s Time] [2023-11-12 02:23:59,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 869 states. [2023-11-12 02:23:59,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 869 to 817. [2023-11-12 02:23:59,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 817 states, 622 states have (on average 1.3633440514469453) internal successors, (848), 628 states have internal predecessors, (848), 150 states have call successors, (150), 45 states have call predecessors, (150), 44 states have return successors, (149), 147 states have call predecessors, (149), 149 states have call successors, (149) [2023-11-12 02:23:59,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 817 states to 817 states and 1147 transitions. [2023-11-12 02:23:59,353 INFO L78 Accepts]: Start accepts. Automaton has 817 states and 1147 transitions. Word has length 73 [2023-11-12 02:23:59,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:23:59,353 INFO L495 AbstractCegarLoop]: Abstraction has 817 states and 1147 transitions. [2023-11-12 02:23:59,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-12 02:23:59,354 INFO L276 IsEmpty]: Start isEmpty. Operand 817 states and 1147 transitions. [2023-11-12 02:23:59,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-11-12 02:23:59,357 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:23:59,357 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-12 02:23:59,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:23:59,357 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:23:59,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:23:59,358 INFO L85 PathProgramCache]: Analyzing trace with hash -153745342, now seen corresponding path program 1 times [2023-11-12 02:23:59,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:23:59,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209729310] [2023-11-12 02:23:59,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:23:59,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:23:59,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:23:59,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-12 02:23:59,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:23:59,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-12 02:23:59,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:23:59,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-12 02:23:59,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:23:59,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-12 02:23:59,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:23:59,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-12 02:23:59,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:23:59,836 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-12 02:23:59,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:23:59,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209729310] [2023-11-12 02:23:59,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209729310] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:23:59,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:23:59,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:23:59,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013801318] [2023-11-12 02:23:59,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:23:59,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:23:59,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:23:59,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:23:59,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:23:59,839 INFO L87 Difference]: Start difference. First operand 817 states and 1147 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-12 02:24:05,218 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 02:24:07,223 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 02:24:10,491 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-11-12 02:24:12,619 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 02:24:14,626 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 02:24:14,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:24:14,673 INFO L93 Difference]: Finished difference Result 1899 states and 2716 transitions. [2023-11-12 02:24:14,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:24:14,674 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 88 [2023-11-12 02:24:14,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:24:14,684 INFO L225 Difference]: With dead ends: 1899 [2023-11-12 02:24:14,685 INFO L226 Difference]: Without dead ends: 1098 [2023-11-12 02:24:14,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:24:14,689 INFO L413 NwaCegarLoop]: 668 mSDtfsCounter, 496 mSDsluCounter, 1157 mSDsCounter, 0 mSdLazyCounter, 1047 mSolverCounterSat, 368 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 559 SdHoareTripleChecker+Valid, 1825 SdHoareTripleChecker+Invalid, 1419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 368 IncrementalHoareTripleChecker+Valid, 1047 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.7s IncrementalHoareTripleChecker+Time [2023-11-12 02:24:14,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [559 Valid, 1825 Invalid, 1419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [368 Valid, 1047 Invalid, 4 Unknown, 0 Unchecked, 14.7s Time] [2023-11-12 02:24:14,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1098 states. [2023-11-12 02:24:14,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1098 to 819. [2023-11-12 02:24:14,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 819 states, 624 states have (on average 1.3621794871794872) internal successors, (850), 630 states have internal predecessors, (850), 150 states have call successors, (150), 45 states have call predecessors, (150), 44 states have return successors, (149), 147 states have call predecessors, (149), 149 states have call successors, (149) [2023-11-12 02:24:14,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 1149 transitions. [2023-11-12 02:24:14,755 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 1149 transitions. Word has length 88 [2023-11-12 02:24:14,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:24:14,756 INFO L495 AbstractCegarLoop]: Abstraction has 819 states and 1149 transitions. [2023-11-12 02:24:14,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-12 02:24:14,756 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 1149 transitions. [2023-11-12 02:24:14,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-11-12 02:24:14,758 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:24:14,759 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-12 02:24:14,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:24:14,759 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:24:14,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:24:14,760 INFO L85 PathProgramCache]: Analyzing trace with hash 2002897558, now seen corresponding path program 1 times [2023-11-12 02:24:14,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:24:14,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963468012] [2023-11-12 02:24:14,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:24:14,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:24:14,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:15,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-12 02:24:15,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:15,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-12 02:24:15,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:15,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-12 02:24:15,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:15,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-12 02:24:15,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:15,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-12 02:24:15,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:15,070 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-12 02:24:15,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:24:15,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963468012] [2023-11-12 02:24:15,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963468012] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:24:15,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:24:15,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:24:15,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602041441] [2023-11-12 02:24:15,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:24:15,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:24:15,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:24:15,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:24:15,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:24:15,073 INFO L87 Difference]: Start difference. First operand 819 states and 1149 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5)