./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--mwifiex--mwifiex_usb.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4c9d87-e763-498c-b94a-551981b9ee7e/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4c9d87-e763-498c-b94a-551981b9ee7e/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4c9d87-e763-498c-b94a-551981b9ee7e/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4c9d87-e763-498c-b94a-551981b9ee7e/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--mwifiex--mwifiex_usb.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4c9d87-e763-498c-b94a-551981b9ee7e/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4c9d87-e763-498c-b94a-551981b9ee7e/bin/uautomizer-J5u9QxTXDZ --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 9f2fac8642c25f1335350a2814ff7cf3c4ea0fb7f4feaed63baec564397e8f24 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 10:22:21,549 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:22:21,555 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:22:21,607 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:22:21,607 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:22:21,611 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:22:21,614 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:22:21,619 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:22:21,622 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:22:21,628 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:22:21,629 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:22:21,632 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:22:21,632 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:22:21,635 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:22:21,637 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:22:21,639 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:22:21,641 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:22:21,642 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:22:21,644 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:22:21,652 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:22:21,654 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:22:21,655 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:22:21,659 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:22:21,660 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:22:21,667 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:22:21,668 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:22:21,668 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:22:21,670 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:22:21,671 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:22:21,672 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:22:21,673 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:22:21,674 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:22:21,676 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:22:21,677 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:22:21,678 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:22:21,679 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:22:21,679 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:22:21,680 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:22:21,680 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:22:21,681 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:22:21,682 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:22:21,683 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4c9d87-e763-498c-b94a-551981b9ee7e/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-10-17 10:22:21,742 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:22:21,743 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:22:21,743 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:22:21,744 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:22:21,745 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:22:21,745 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:22:21,746 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:22:21,746 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:22:21,746 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:22:21,746 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:22:21,747 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:22:21,748 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:22:21,748 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:22:21,748 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:22:21,748 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:22:21,749 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:22:21,749 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:22:21,749 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:22:21,749 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:22:21,749 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:22:21,750 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:22:21,750 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:22:21,750 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:22:21,750 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:22:21,750 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:22:21,751 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:22:21,752 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:22:21,752 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:22:21,753 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:22:21,753 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:22:21,753 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4c9d87-e763-498c-b94a-551981b9ee7e/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4c9d87-e763-498c-b94a-551981b9ee7e/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9f2fac8642c25f1335350a2814ff7cf3c4ea0fb7f4feaed63baec564397e8f24 [2022-10-17 10:22:22,006 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:22:22,033 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:22:22,035 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:22:22,037 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:22:22,043 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:22:22,044 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4c9d87-e763-498c-b94a-551981b9ee7e/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--mwifiex--mwifiex_usb.ko-entry_point.cil.out.i [2022-10-17 10:22:22,114 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4c9d87-e763-498c-b94a-551981b9ee7e/bin/uautomizer-J5u9QxTXDZ/data/620907ef5/f6dd8930e43e47f2ace24d320da41078/FLAGeb0d16681 [2022-10-17 10:22:23,001 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:22:23,002 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4c9d87-e763-498c-b94a-551981b9ee7e/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--mwifiex--mwifiex_usb.ko-entry_point.cil.out.i [2022-10-17 10:22:23,040 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4c9d87-e763-498c-b94a-551981b9ee7e/bin/uautomizer-J5u9QxTXDZ/data/620907ef5/f6dd8930e43e47f2ace24d320da41078/FLAGeb0d16681 [2022-10-17 10:22:23,435 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4c9d87-e763-498c-b94a-551981b9ee7e/bin/uautomizer-J5u9QxTXDZ/data/620907ef5/f6dd8930e43e47f2ace24d320da41078 [2022-10-17 10:22:23,437 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:22:23,439 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:22:23,440 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:22:23,440 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:22:23,456 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:22:23,457 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:22:23" (1/1) ... [2022-10-17 10:22:23,458 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12d7f7d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:22:23, skipping insertion in model container [2022-10-17 10:22:23,458 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:22:23" (1/1) ... [2022-10-17 10:22:23,467 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:22:23,643 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:22:24,783 WARN L230 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_ad4c9d87-e763-498c-b94a-551981b9ee7e/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--mwifiex--mwifiex_usb.ko-entry_point.cil.out.i[202214,202227] [2022-10-17 10:22:25,378 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:22:25,412 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:22:25,665 WARN L230 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_ad4c9d87-e763-498c-b94a-551981b9ee7e/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--mwifiex--mwifiex_usb.ko-entry_point.cil.out.i[202214,202227] [2022-10-17 10:22:25,847 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:22:25,988 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:22:25,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:22:25 WrapperNode [2022-10-17 10:22:25,990 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:22:25,991 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:22:25,992 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:22:25,992 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:22:26,000 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:22:25" (1/1) ... [2022-10-17 10:22:26,092 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:22:25" (1/1) ... [2022-10-17 10:22:26,243 INFO L138 Inliner]: procedures = 163, calls = 1186, calls flagged for inlining = 76, calls inlined = 76, statements flattened = 3081 [2022-10-17 10:22:26,243 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:22:26,244 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:22:26,244 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:22:26,244 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:22:26,254 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:22:25" (1/1) ... [2022-10-17 10:22:26,254 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:22:25" (1/1) ... [2022-10-17 10:22:26,275 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:22:25" (1/1) ... [2022-10-17 10:22:26,275 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:22:25" (1/1) ... [2022-10-17 10:22:26,393 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:22:25" (1/1) ... [2022-10-17 10:22:26,423 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:22:25" (1/1) ... [2022-10-17 10:22:26,454 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:22:25" (1/1) ... [2022-10-17 10:22:26,472 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:22:25" (1/1) ... [2022-10-17 10:22:26,501 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:22:26,502 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:22:26,503 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:22:26,503 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:22:26,504 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:22:25" (1/1) ... [2022-10-17 10:22:26,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:22:26,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4c9d87-e763-498c-b94a-551981b9ee7e/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:22:26,540 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4c9d87-e763-498c-b94a-551981b9ee7e/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:22:26,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad4c9d87-e763-498c-b94a-551981b9ee7e/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:22:26,635 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2022-10-17 10:22:26,636 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2022-10-17 10:22:26,636 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_unregister_dev [2022-10-17 10:22:26,636 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_unregister_dev [2022-10-17 10:22:26,636 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_bulk_urb_2 [2022-10-17 10:22:26,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_bulk_urb_2 [2022-10-17 10:22:26,637 INFO L130 BoogieDeclarations]: Found specification of procedure skb_copy_from_linear_data [2022-10-17 10:22:26,639 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_copy_from_linear_data [2022-10-17 10:22:26,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-10-17 10:22:26,640 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_3 [2022-10-17 10:22:26,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_3 [2022-10-17 10:22:26,640 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-10-17 10:22:26,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-10-17 10:22:26,641 INFO L130 BoogieDeclarations]: Found specification of procedure usb_bulk_msg [2022-10-17 10:22:26,641 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_bulk_msg [2022-10-17 10:22:26,641 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-10-17 10:22:26,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-10-17 10:22:26,641 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 10:22:26,642 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_bulk [2022-10-17 10:22:26,642 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_bulk [2022-10-17 10:22:26,642 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2022-10-17 10:22:26,642 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2022-10-17 10:22:26,642 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2022-10-17 10:22:26,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2022-10-17 10:22:26,643 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-10-17 10:22:26,643 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-10-17 10:22:26,643 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_usb_disconnect [2022-10-17 10:22:26,643 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_usb_disconnect [2022-10-17 10:22:26,643 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-10-17 10:22:26,644 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-10-17 10:22:26,644 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-10-17 10:22:26,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-10-17 10:22:26,644 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2022-10-17 10:22:26,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2022-10-17 10:22:26,644 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-10-17 10:22:26,645 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-10-17 10:22:26,645 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_get_priv [2022-10-17 10:22:26,645 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_get_priv [2022-10-17 10:22:26,645 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_usb_submit_rx_urb [2022-10-17 10:22:26,645 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_usb_submit_rx_urb [2022-10-17 10:22:26,646 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-10-17 10:22:26,646 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-10-17 10:22:26,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 10:22:26,646 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-10-17 10:22:26,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-10-17 10:22:26,646 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_usb_rx_complete [2022-10-17 10:22:26,647 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_usb_rx_complete [2022-10-17 10:22:26,647 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_in [2022-10-17 10:22:26,647 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_in [2022-10-17 10:22:26,648 INFO L130 BoogieDeclarations]: Found specification of procedure dev_alloc_skb [2022-10-17 10:22:26,648 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_alloc_skb [2022-10-17 10:22:26,648 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-10-17 10:22:26,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-10-17 10:22:26,648 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2022-10-17 10:22:26,649 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2022-10-17 10:22:26,649 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-10-17 10:22:26,649 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-10-17 10:22:26,651 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-10-17 10:22:26,651 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-10-17 10:22:26,652 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-17 10:22:26,652 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2022-10-17 10:22:26,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2022-10-17 10:22:26,652 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2022-10-17 10:22:26,653 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2022-10-17 10:22:26,653 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:22:26,653 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2022-10-17 10:22:26,653 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2022-10-17 10:22:26,653 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-10-17 10:22:26,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-10-17 10:22:26,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-17 10:22:26,654 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 10:22:26,655 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-10-17 10:22:26,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-10-17 10:22:26,655 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_usb_cmd_event_complete [2022-10-17 10:22:26,655 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_usb_cmd_event_complete [2022-10-17 10:22:26,656 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata_8 [2022-10-17 10:22:26,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata_8 [2022-10-17 10:22:26,656 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-17 10:22:26,656 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2022-10-17 10:22:26,656 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2022-10-17 10:22:26,657 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_num [2022-10-17 10:22:26,657 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_num [2022-10-17 10:22:26,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 10:22:26,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-10-17 10:22:26,658 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata_10 [2022-10-17 10:22:26,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata_10 [2022-10-17 10:22:26,658 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-10-17 10:22:26,658 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-10-17 10:22:26,658 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2022-10-17 10:22:26,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2022-10-17 10:22:26,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:22:26,660 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_usb_resume [2022-10-17 10:22:26,660 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_usb_resume [2022-10-17 10:22:26,660 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work [2022-10-17 10:22:26,660 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work [2022-10-17 10:22:26,660 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2022-10-17 10:22:26,661 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2022-10-17 10:22:26,661 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-10-17 10:22:26,662 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u8 [2022-10-17 10:22:26,662 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-10-17 10:22:26,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-10-17 10:22:26,663 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:22:26,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:22:26,663 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_out [2022-10-17 10:22:26,663 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_out [2022-10-17 10:22:27,345 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:22:27,348 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:22:27,743 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-10-17 10:22:28,700 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___0FINAL: assume true; [2022-10-17 10:22:32,668 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:22:32,684 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:22:32,684 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-17 10:22:32,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:22:32 BoogieIcfgContainer [2022-10-17 10:22:32,688 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:22:32,691 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:22:32,691 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:22:32,695 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:22:32,696 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:22:23" (1/3) ... [2022-10-17 10:22:32,697 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78e1e0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:22:32, skipping insertion in model container [2022-10-17 10:22:32,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:22:25" (2/3) ... [2022-10-17 10:22:32,697 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78e1e0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:22:32, skipping insertion in model container [2022-10-17 10:22:32,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:22:32" (3/3) ... [2022-10-17 10:22:32,699 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--mwifiex--mwifiex_usb.ko-entry_point.cil.out.i [2022-10-17 10:22:32,719 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:22:32,720 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:22:32,804 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:22:32,817 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@78a9189a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:22:32,817 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 10:22:32,837 INFO L276 IsEmpty]: Start isEmpty. Operand has 855 states, 631 states have (on average 1.3851030110935023) internal successors, (874), 657 states have internal predecessors, (874), 180 states have call successors, (180), 44 states have call predecessors, (180), 42 states have return successors, (174), 166 states have call predecessors, (174), 174 states have call successors, (174) [2022-10-17 10:22:32,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-10-17 10:22:32,875 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:22:32,876 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:22:32,876 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:22:32,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:22:32,884 INFO L85 PathProgramCache]: Analyzing trace with hash -967497407, now seen corresponding path program 1 times [2022-10-17 10:22:32,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:22:32,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791352743] [2022-10-17 10:22:32,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:22:32,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:22:33,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:22:33,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:22:33,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:22:33,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-17 10:22:33,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:22:33,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-17 10:22:33,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:22:33,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-10-17 10:22:33,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:22:33,826 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-10-17 10:22:33,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:22:33,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791352743] [2022-10-17 10:22:33,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791352743] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:22:33,828 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:22:33,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:22:33,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554187547] [2022-10-17 10:22:33,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:22:33,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:22:33,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:22:33,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:22:33,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:22:33,871 INFO L87 Difference]: Start difference. First operand has 855 states, 631 states have (on average 1.3851030110935023) internal successors, (874), 657 states have internal predecessors, (874), 180 states have call successors, (180), 44 states have call predecessors, (180), 42 states have return successors, (174), 166 states have call predecessors, (174), 174 states have call successors, (174) Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-17 10:22:36,318 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-17 10:22:38,344 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-17 10:22:43,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:22:43,916 INFO L93 Difference]: Finished difference Result 2754 states and 4123 transitions. [2022-10-17 10:22:43,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-17 10:22:43,918 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 44 [2022-10-17 10:22:43,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:22:43,957 INFO L225 Difference]: With dead ends: 2754 [2022-10-17 10:22:43,957 INFO L226 Difference]: Without dead ends: 1880 [2022-10-17 10:22:43,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-10-17 10:22:43,982 INFO L413 NwaCegarLoop]: 1333 mSDtfsCounter, 1892 mSDsluCounter, 2057 mSDsCounter, 0 mSdLazyCounter, 1559 mSolverCounterSat, 1010 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2041 SdHoareTripleChecker+Valid, 3390 SdHoareTripleChecker+Invalid, 2571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1010 IncrementalHoareTripleChecker+Valid, 1559 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2022-10-17 10:22:43,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2041 Valid, 3390 Invalid, 2571 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1010 Valid, 1559 Invalid, 2 Unknown, 0 Unchecked, 9.6s Time] [2022-10-17 10:22:44,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1880 states. [2022-10-17 10:22:44,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1880 to 1612. [2022-10-17 10:22:44,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1612 states, 1197 states have (on average 1.3751044277360067) internal successors, (1646), 1229 states have internal predecessors, (1646), 332 states have call successors, (332), 83 states have call predecessors, (332), 82 states have return successors, (327), 311 states have call predecessors, (327), 327 states have call successors, (327) [2022-10-17 10:22:44,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1612 states to 1612 states and 2305 transitions. [2022-10-17 10:22:44,248 INFO L78 Accepts]: Start accepts. Automaton has 1612 states and 2305 transitions. Word has length 44 [2022-10-17 10:22:44,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:22:44,250 INFO L495 AbstractCegarLoop]: Abstraction has 1612 states and 2305 transitions. [2022-10-17 10:22:44,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-17 10:22:44,251 INFO L276 IsEmpty]: Start isEmpty. Operand 1612 states and 2305 transitions. [2022-10-17 10:22:44,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-10-17 10:22:44,259 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:22:44,259 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:22:44,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:22:44,260 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:22:44,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:22:44,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1415687837, now seen corresponding path program 1 times [2022-10-17 10:22:44,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:22:44,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888382185] [2022-10-17 10:22:44,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:22:44,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:22:44,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:22:45,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:22:45,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:22:45,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-17 10:22:45,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:22:45,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-17 10:22:45,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:22:45,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-10-17 10:22:45,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:22:45,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-10-17 10:22:45,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:22:45,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-10-17 10:22:45,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:22:45,522 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-10-17 10:22:45,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:22:45,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888382185] [2022-10-17 10:22:45,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888382185] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:22:45,524 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:22:45,524 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:22:45,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746496012] [2022-10-17 10:22:45,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:22:45,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:22:45,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:22:45,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:22:45,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:22:45,530 INFO L87 Difference]: Start difference. First operand 1612 states and 2305 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-10-17 10:22:47,842 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-17 10:22:49,866 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-17 10:22:53,566 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-17 10:22:55,595 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []