./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--usb--host--ohci-hcd.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0a41ae-b77a-41cc-85d4-e8fcfcd03033/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0a41ae-b77a-41cc-85d4-e8fcfcd03033/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0a41ae-b77a-41cc-85d4-e8fcfcd03033/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0a41ae-b77a-41cc-85d4-e8fcfcd03033/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--usb--host--ohci-hcd.ko-main.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0a41ae-b77a-41cc-85d4-e8fcfcd03033/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0a41ae-b77a-41cc-85d4-e8fcfcd03033/bin/uautomizer-DQz5hQGWxF --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 0991342cd9e67cbadb964d86a1516812eb3aa45e84d4674c09b8e10a19f475c1 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 06:13:31,033 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 06:13:31,036 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 06:13:31,091 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 06:13:31,092 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 06:13:31,097 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 06:13:31,099 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 06:13:31,103 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 06:13:31,105 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 06:13:31,113 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 06:13:31,114 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 06:13:31,116 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 06:13:31,116 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 06:13:31,119 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 06:13:31,121 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 06:13:31,127 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 06:13:31,129 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 06:13:31,131 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 06:13:31,133 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 06:13:31,142 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 06:13:31,144 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 06:13:31,145 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 06:13:31,148 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 06:13:31,149 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 06:13:31,153 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 06:13:31,154 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 06:13:31,154 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 06:13:31,156 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 06:13:31,157 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 06:13:31,158 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 06:13:31,158 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 06:13:31,159 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 06:13:31,162 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 06:13:31,163 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 06:13:31,164 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 06:13:31,165 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 06:13:31,165 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 06:13:31,166 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 06:13:31,166 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 06:13:31,167 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 06:13:31,167 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 06:13:31,168 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0a41ae-b77a-41cc-85d4-e8fcfcd03033/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-20 06:13:31,203 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 06:13:31,203 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 06:13:31,204 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 06:13:31,204 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 06:13:31,204 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 06:13:31,205 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 06:13:31,205 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 06:13:31,205 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 06:13:31,205 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 06:13:31,206 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 06:13:31,206 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 06:13:31,206 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 06:13:31,206 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 06:13:31,206 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 06:13:31,207 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 06:13:31,207 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 06:13:31,207 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 06:13:31,207 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 06:13:31,207 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 06:13:31,207 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 06:13:31,207 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 06:13:31,208 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:13:31,208 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 06:13:31,208 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 06:13:31,208 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 06:13:31,208 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 06:13:31,208 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 06:13:31,208 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 06:13:31,209 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 06:13:31,209 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 06:13:31,209 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 06:13:31,209 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_3e0a41ae-b77a-41cc-85d4-e8fcfcd03033/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0a41ae-b77a-41cc-85d4-e8fcfcd03033/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0991342cd9e67cbadb964d86a1516812eb3aa45e84d4674c09b8e10a19f475c1 [2021-11-20 06:13:31,468 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 06:13:31,488 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 06:13:31,491 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 06:13:31,492 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 06:13:31,493 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 06:13:31,494 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0a41ae-b77a-41cc-85d4-e8fcfcd03033/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--usb--host--ohci-hcd.ko-main.cil.out.i [2021-11-20 06:13:31,549 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0a41ae-b77a-41cc-85d4-e8fcfcd03033/bin/uautomizer-DQz5hQGWxF/data/eee456ef4/f86db219e1fe48efaf8cd0e2e603b3a4/FLAG3d20e66ab [2021-11-20 06:13:32,556 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 06:13:32,557 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0a41ae-b77a-41cc-85d4-e8fcfcd03033/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--usb--host--ohci-hcd.ko-main.cil.out.i [2021-11-20 06:13:32,615 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0a41ae-b77a-41cc-85d4-e8fcfcd03033/bin/uautomizer-DQz5hQGWxF/data/eee456ef4/f86db219e1fe48efaf8cd0e2e603b3a4/FLAG3d20e66ab [2021-11-20 06:13:32,896 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0a41ae-b77a-41cc-85d4-e8fcfcd03033/bin/uautomizer-DQz5hQGWxF/data/eee456ef4/f86db219e1fe48efaf8cd0e2e603b3a4 [2021-11-20 06:13:32,899 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 06:13:32,901 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 06:13:32,902 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 06:13:32,902 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 06:13:32,907 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 06:13:32,908 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:13:32" (1/1) ... [2021-11-20 06:13:32,909 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@529ad579 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:13:32, skipping insertion in model container [2021-11-20 06:13:32,909 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:13:32" (1/1) ... [2021-11-20 06:13:32,916 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 06:13:33,112 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 06:13:35,822 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_3e0a41ae-b77a-41cc-85d4-e8fcfcd03033/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--usb--host--ohci-hcd.ko-main.cil.out.i[339370,339383] [2021-11-20 06:13:35,973 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:13:36,010 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 06:13:36,516 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_3e0a41ae-b77a-41cc-85d4-e8fcfcd03033/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--usb--host--ohci-hcd.ko-main.cil.out.i[339370,339383] [2021-11-20 06:13:36,531 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:13:36,676 INFO L208 MainTranslator]: Completed translation [2021-11-20 06:13:36,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:13:36 WrapperNode [2021-11-20 06:13:36,678 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 06:13:36,680 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 06:13:36,680 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 06:13:36,680 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 06:13:36,695 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:13:36" (1/1) ... [2021-11-20 06:13:36,885 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:13:36" (1/1) ... [2021-11-20 06:13:37,270 INFO L137 Inliner]: procedures = 326, calls = 4469, calls flagged for inlining = 131, calls inlined = 121, statements flattened = 8803 [2021-11-20 06:13:37,271 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 06:13:37,272 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 06:13:37,272 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 06:13:37,272 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 06:13:37,280 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:13:36" (1/1) ... [2021-11-20 06:13:37,281 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:13:36" (1/1) ... [2021-11-20 06:13:37,394 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:13:36" (1/1) ... [2021-11-20 06:13:37,400 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:13:36" (1/1) ... [2021-11-20 06:13:37,597 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:13:36" (1/1) ... [2021-11-20 06:13:37,639 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:13:36" (1/1) ... [2021-11-20 06:13:37,679 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:13:36" (1/1) ... [2021-11-20 06:13:37,724 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 06:13:37,725 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 06:13:37,726 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 06:13:37,726 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 06:13:37,727 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:13:36" (1/1) ... [2021-11-20 06:13:37,734 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:13:37,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0a41ae-b77a-41cc-85d4-e8fcfcd03033/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:13:37,757 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0a41ae-b77a-41cc-85d4-e8fcfcd03033/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 06:13:37,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0a41ae-b77a-41cc-85d4-e8fcfcd03033/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 06:13:37,863 INFO L130 BoogieDeclarations]: Found specification of procedure hcd_to_ohci [2021-11-20 06:13:37,863 INFO L138 BoogieDeclarations]: Found implementation of procedure hcd_to_ohci [2021-11-20 06:13:37,863 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-11-20 06:13:37,864 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-11-20 06:13:37,864 INFO L130 BoogieDeclarations]: Found specification of procedure platform_driver_unregister [2021-11-20 06:13:37,864 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_driver_unregister [2021-11-20 06:13:37,864 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unregister_driver [2021-11-20 06:13:37,864 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unregister_driver [2021-11-20 06:13:37,864 INFO L130 BoogieDeclarations]: Found specification of procedure start_ed_unlink [2021-11-20 06:13:37,864 INFO L138 BoogieDeclarations]: Found implementation of procedure start_ed_unlink [2021-11-20 06:13:37,865 INFO L130 BoogieDeclarations]: Found specification of procedure roothub_status [2021-11-20 06:13:37,865 INFO L138 BoogieDeclarations]: Found implementation of procedure roothub_status [2021-11-20 06:13:37,865 INFO L130 BoogieDeclarations]: Found specification of procedure put_unaligned_le32 [2021-11-20 06:13:37,865 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unaligned_le32 [2021-11-20 06:13:37,865 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_platform_suspend [2021-11-20 06:13:37,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_platform_suspend [2021-11-20 06:13:37,865 INFO L130 BoogieDeclarations]: Found specification of procedure dma_pool_alloc [2021-11-20 06:13:37,865 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_pool_alloc [2021-11-20 06:13:37,866 INFO L130 BoogieDeclarations]: Found specification of procedure show_list [2021-11-20 06:13:37,866 INFO L138 BoogieDeclarations]: Found implementation of procedure show_list [2021-11-20 06:13:37,866 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_platform_probe [2021-11-20 06:13:37,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_platform_probe [2021-11-20 06:13:37,866 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-20 06:13:37,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-20 06:13:37,866 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_maxp [2021-11-20 06:13:37,866 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_maxp [2021-11-20 06:13:37,867 INFO L130 BoogieDeclarations]: Found specification of procedure hc32_to_cpup [2021-11-20 06:13:37,867 INFO L138 BoogieDeclarations]: Found implementation of procedure hc32_to_cpup [2021-11-20 06:13:37,867 INFO L130 BoogieDeclarations]: Found specification of procedure hcfs2string [2021-11-20 06:13:37,867 INFO L138 BoogieDeclarations]: Found implementation of procedure hcfs2string [2021-11-20 06:13:37,867 INFO L130 BoogieDeclarations]: Found specification of procedure quirk_zfmicro [2021-11-20 06:13:37,867 INFO L138 BoogieDeclarations]: Found implementation of procedure quirk_zfmicro [2021-11-20 06:13:37,867 INFO L130 BoogieDeclarations]: Found specification of procedure usb_disabled [2021-11-20 06:13:37,867 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_disabled [2021-11-20 06:13:37,868 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_hub_status_data [2021-11-20 06:13:37,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_hub_status_data [2021-11-20 06:13:37,868 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_pci_reset [2021-11-20 06:13:37,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_pci_reset [2021-11-20 06:13:37,868 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_shutdown [2021-11-20 06:13:37,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_shutdown [2021-11-20 06:13:37,868 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-20 06:13:37,868 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-20 06:13:37,869 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-20 06:13:37,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-20 06:13:37,869 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_dump_intr_mask [2021-11-20 06:13:37,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_dump_intr_mask [2021-11-20 06:13:37,869 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_buffer [2021-11-20 06:13:37,869 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_buffer [2021-11-20 06:13:37,869 INFO L130 BoogieDeclarations]: Found specification of procedure _ohci_writel [2021-11-20 06:13:37,869 INFO L138 BoogieDeclarations]: Found implementation of procedure _ohci_writel [2021-11-20 06:13:37,870 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-20 06:13:37,870 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-20 06:13:37,870 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-20 06:13:37,870 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-20 06:13:37,871 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_hwPSWp [2021-11-20 06:13:37,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_hwPSWp [2021-11-20 06:13:37,871 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_platform_resume [2021-11-20 06:13:37,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_platform_resume [2021-11-20 06:13:37,872 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_suspend [2021-11-20 06:13:37,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_suspend [2021-11-20 06:13:37,873 INFO L130 BoogieDeclarations]: Found specification of procedure debug_output [2021-11-20 06:13:37,873 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_output [2021-11-20 06:13:37,873 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-11-20 06:13:37,873 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-11-20 06:13:37,874 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-20 06:13:37,874 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-20 06:13:37,874 INFO L130 BoogieDeclarations]: Found specification of procedure ed_schedule [2021-11-20 06:13:37,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ed_schedule [2021-11-20 06:13:37,875 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_hcd_init [2021-11-20 06:13:37,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_hcd_init [2021-11-20 06:13:37,875 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_dump_roothub [2021-11-20 06:13:37,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_dump_roothub [2021-11-20 06:13:37,875 INFO L130 BoogieDeclarations]: Found specification of procedure round_jiffies [2021-11-20 06:13:37,875 INFO L138 BoogieDeclarations]: Found implementation of procedure round_jiffies [2021-11-20 06:13:37,875 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2021-11-20 06:13:37,876 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2021-11-20 06:13:37,876 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 06:13:37,876 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_stop [2021-11-20 06:13:37,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_stop [2021-11-20 06:13:37,877 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-20 06:13:37,877 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-20 06:13:37,877 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 06:13:37,877 INFO L130 BoogieDeclarations]: Found specification of procedure dma_pool_create [2021-11-20 06:13:37,877 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_pool_create [2021-11-20 06:13:37,877 INFO L130 BoogieDeclarations]: Found specification of procedure usb_hcd_pci_remove [2021-11-20 06:13:37,877 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_hcd_pci_remove [2021-11-20 06:13:37,878 INFO L130 BoogieDeclarations]: Found specification of procedure check_ed [2021-11-20 06:13:37,878 INFO L138 BoogieDeclarations]: Found implementation of procedure check_ed [2021-11-20 06:13:37,878 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_restart [2021-11-20 06:13:37,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_restart [2021-11-20 06:13:37,878 INFO L130 BoogieDeclarations]: Found specification of procedure quirk_nec [2021-11-20 06:13:37,879 INFO L138 BoogieDeclarations]: Found implementation of procedure quirk_nec [2021-11-20 06:13:37,879 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-20 06:13:37,879 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-20 06:13:37,879 INFO L130 BoogieDeclarations]: Found specification of procedure dma_pool_destroy [2021-11-20 06:13:37,879 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_pool_destroy [2021-11-20 06:13:37,880 INFO L130 BoogieDeclarations]: Found specification of procedure td_free [2021-11-20 06:13:37,880 INFO L138 BoogieDeclarations]: Found implementation of procedure td_free [2021-11-20 06:13:37,880 INFO L130 BoogieDeclarations]: Found specification of procedure broken_suspend [2021-11-20 06:13:37,881 INFO L138 BoogieDeclarations]: Found implementation of procedure broken_suspend [2021-11-20 06:13:37,881 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 06:13:37,882 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_rh_resume [2021-11-20 06:13:37,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_rh_resume [2021-11-20 06:13:37,882 INFO L130 BoogieDeclarations]: Found specification of procedure usb_hcd_platform_shutdown [2021-11-20 06:13:37,882 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_hcd_platform_shutdown [2021-11-20 06:13:37,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-20 06:13:37,882 INFO L130 BoogieDeclarations]: Found specification of procedure roothub_portstatus [2021-11-20 06:13:37,882 INFO L138 BoogieDeclarations]: Found implementation of procedure roothub_portstatus [2021-11-20 06:13:37,883 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_word [2021-11-20 06:13:37,883 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_word [2021-11-20 06:13:37,883 INFO L130 BoogieDeclarations]: Found specification of procedure usb_hc_died [2021-11-20 06:13:37,883 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_hc_died [2021-11-20 06:13:37,883 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_platform_remove [2021-11-20 06:13:37,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_platform_remove [2021-11-20 06:13:37,884 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_remove [2021-11-20 06:13:37,884 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_remove [2021-11-20 06:13:37,884 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-11-20 06:13:37,884 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-11-20 06:13:37,885 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_create_dir [2021-11-20 06:13:37,887 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_create_dir [2021-11-20 06:13:37,887 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-20 06:13:37,888 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-20 06:13:37,888 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-20 06:13:37,888 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-20 06:13:37,890 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-11-20 06:13:37,890 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-11-20 06:13:37,890 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_resume [2021-11-20 06:13:37,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_resume [2021-11-20 06:13:37,896 INFO L130 BoogieDeclarations]: Found specification of procedure ed_free [2021-11-20 06:13:37,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ed_free [2021-11-20 06:13:37,896 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-20 06:13:37,896 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-20 06:13:37,896 INFO L130 BoogieDeclarations]: Found specification of procedure usb_put_hcd [2021-11-20 06:13:37,896 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_put_hcd [2021-11-20 06:13:37,896 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_platform_start [2021-11-20 06:13:37,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_platform_start [2021-11-20 06:13:37,897 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_dump [2021-11-20 06:13:37,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_dump [2021-11-20 06:13:37,897 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_frame_no [2021-11-20 06:13:37,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_frame_no [2021-11-20 06:13:37,897 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-20 06:13:37,897 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-20 06:13:37,897 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2021-11-20 06:13:37,897 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2021-11-20 06:13:37,898 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-11-20 06:13:37,898 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-11-20 06:13:37,898 INFO L130 BoogieDeclarations]: Found specification of procedure sb800_prefetch [2021-11-20 06:13:37,898 INFO L138 BoogieDeclarations]: Found implementation of procedure sb800_prefetch [2021-11-20 06:13:37,898 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_hub_control [2021-11-20 06:13:37,898 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_hub_control [2021-11-20 06:13:37,898 INFO L130 BoogieDeclarations]: Found specification of procedure usb_hcd_unlink_urb_from_ep [2021-11-20 06:13:37,898 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_hcd_unlink_urb_from_ep [2021-11-20 06:13:37,898 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 06:13:37,899 INFO L130 BoogieDeclarations]: Found specification of procedure finish_urb [2021-11-20 06:13:37,899 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_urb [2021-11-20 06:13:37,899 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_rh_suspend [2021-11-20 06:13:37,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_rh_suspend [2021-11-20 06:13:37,899 INFO L130 BoogieDeclarations]: Found specification of procedure roothub_a [2021-11-20 06:13:37,899 INFO L138 BoogieDeclarations]: Found implementation of procedure roothub_a [2021-11-20 06:13:37,899 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_irq [2021-11-20 06:13:37,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_irq [2021-11-20 06:13:37,899 INFO L130 BoogieDeclarations]: Found specification of procedure rh_state_string [2021-11-20 06:13:37,900 INFO L138 BoogieDeclarations]: Found implementation of procedure rh_state_string [2021-11-20 06:13:37,900 INFO L130 BoogieDeclarations]: Found specification of procedure roothub_b [2021-11-20 06:13:37,900 INFO L138 BoogieDeclarations]: Found implementation of procedure roothub_b [2021-11-20 06:13:37,900 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_urb_enqueue [2021-11-20 06:13:37,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_urb_enqueue [2021-11-20 06:13:37,900 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_start_port_reset [2021-11-20 06:13:37,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_start_port_reset [2021-11-20 06:13:37,900 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_to_hcd [2021-11-20 06:13:37,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_to_hcd [2021-11-20 06:13:37,900 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_pci_start [2021-11-20 06:13:37,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_pci_start [2021-11-20 06:13:37,901 INFO L130 BoogieDeclarations]: Found specification of procedure td_alloc [2021-11-20 06:13:37,901 INFO L138 BoogieDeclarations]: Found implementation of procedure td_alloc [2021-11-20 06:13:37,901 INFO L130 BoogieDeclarations]: Found specification of procedure find_head [2021-11-20 06:13:37,901 INFO L138 BoogieDeclarations]: Found implementation of procedure find_head [2021-11-20 06:13:37,901 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-20 06:13:37,901 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-20 06:13:37,901 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_run [2021-11-20 06:13:37,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_run [2021-11-20 06:13:37,902 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_create_file [2021-11-20 06:13:37,902 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_create_file [2021-11-20 06:13:37,902 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_endpoint_disable [2021-11-20 06:13:37,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_endpoint_disable [2021-11-20 06:13:37,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 06:13:37,902 INFO L130 BoogieDeclarations]: Found specification of procedure takeback_td [2021-11-20 06:13:37,902 INFO L138 BoogieDeclarations]: Found implementation of procedure takeback_td [2021-11-20 06:13:37,902 INFO L130 BoogieDeclarations]: Found specification of procedure quirk_amdprefetch [2021-11-20 06:13:37,902 INFO L138 BoogieDeclarations]: Found implementation of procedure quirk_amdprefetch [2021-11-20 06:13:37,903 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2021-11-20 06:13:37,903 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2021-11-20 06:13:37,904 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-20 06:13:37,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-20 06:13:37,905 INFO L130 BoogieDeclarations]: Found specification of procedure _ohci_readl [2021-11-20 06:13:37,905 INFO L138 BoogieDeclarations]: Found implementation of procedure _ohci_readl [2021-11-20 06:13:37,905 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 06:13:37,905 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dev_put [2021-11-20 06:13:37,905 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dev_put [2021-11-20 06:13:37,905 INFO L130 BoogieDeclarations]: Found specification of procedure dl_done_list [2021-11-20 06:13:37,905 INFO L138 BoogieDeclarations]: Found implementation of procedure dl_done_list [2021-11-20 06:13:37,905 INFO L130 BoogieDeclarations]: Found specification of procedure usb_hcd_poll_rh_status [2021-11-20 06:13:37,905 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_hcd_poll_rh_status [2021-11-20 06:13:37,905 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2021-11-20 06:13:37,906 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2021-11-20 06:13:37,906 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 06:13:37,906 INFO L130 BoogieDeclarations]: Found specification of procedure periodic_reinit [2021-11-20 06:13:37,906 INFO L138 BoogieDeclarations]: Found implementation of procedure periodic_reinit [2021-11-20 06:13:37,906 INFO L130 BoogieDeclarations]: Found specification of procedure __le32_to_cpup [2021-11-20 06:13:37,906 INFO L138 BoogieDeclarations]: Found implementation of procedure __le32_to_cpup [2021-11-20 06:13:37,906 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-20 06:13:37,906 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-20 06:13:37,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 06:13:37,907 INFO L130 BoogieDeclarations]: Found specification of procedure td_done [2021-11-20 06:13:37,907 INFO L138 BoogieDeclarations]: Found implementation of procedure td_done [2021-11-20 06:13:37,907 INFO L130 BoogieDeclarations]: Found specification of procedure td_fill [2021-11-20 06:13:37,907 INFO L138 BoogieDeclarations]: Found implementation of procedure td_fill [2021-11-20 06:13:37,907 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_urb_dequeue [2021-11-20 06:13:37,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_urb_dequeue [2021-11-20 06:13:37,907 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-20 06:13:37,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-20 06:13:37,907 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_init [2021-11-20 06:13:37,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_init [2021-11-20 06:13:37,908 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2021-11-20 06:13:37,908 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2021-11-20 06:13:37,908 INFO L130 BoogieDeclarations]: Found specification of procedure cpu_to_hc16 [2021-11-20 06:13:37,908 INFO L138 BoogieDeclarations]: Found implementation of procedure cpu_to_hc16 [2021-11-20 06:13:37,908 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-20 06:13:37,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-20 06:13:37,908 INFO L130 BoogieDeclarations]: Found specification of procedure quirk_amdiso [2021-11-20 06:13:37,908 INFO L138 BoogieDeclarations]: Found implementation of procedure quirk_amdiso [2021-11-20 06:13:37,908 INFO L130 BoogieDeclarations]: Found specification of procedure default_llseek [2021-11-20 06:13:37,909 INFO L138 BoogieDeclarations]: Found implementation of procedure default_llseek [2021-11-20 06:13:37,909 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2021-11-20 06:13:37,909 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2021-11-20 06:13:37,909 INFO L130 BoogieDeclarations]: Found specification of procedure ed_deschedule [2021-11-20 06:13:37,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ed_deschedule [2021-11-20 06:13:37,909 INFO L130 BoogieDeclarations]: Found specification of procedure usb_hcd_resume_root_hub [2021-11-20 06:13:37,909 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_hcd_resume_root_hub [2021-11-20 06:13:37,909 INFO L130 BoogieDeclarations]: Found specification of procedure urb_free_priv [2021-11-20 06:13:37,909 INFO L138 BoogieDeclarations]: Found implementation of procedure urb_free_priv [2021-11-20 06:13:37,909 INFO L130 BoogieDeclarations]: Found specification of procedure finish_unlinks [2021-11-20 06:13:37,910 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_unlinks [2021-11-20 06:13:37,910 INFO L130 BoogieDeclarations]: Found specification of procedure hc32_to_cpu [2021-11-20 06:13:37,910 INFO L138 BoogieDeclarations]: Found implementation of procedure hc32_to_cpu [2021-11-20 06:13:37,911 INFO L130 BoogieDeclarations]: Found specification of procedure platform_set_drvdata [2021-11-20 06:13:37,914 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_set_drvdata [2021-11-20 06:13:37,914 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_dump_status [2021-11-20 06:13:37,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_dump_status [2021-11-20 06:13:37,915 INFO L130 BoogieDeclarations]: Found specification of procedure maybe_print_eds [2021-11-20 06:13:37,915 INFO L138 BoogieDeclarations]: Found implementation of procedure maybe_print_eds [2021-11-20 06:13:37,915 INFO L130 BoogieDeclarations]: Found specification of procedure debug_close [2021-11-20 06:13:37,915 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_close [2021-11-20 06:13:37,915 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_get_frame [2021-11-20 06:13:37,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_get_frame [2021-11-20 06:13:37,917 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex_of_debug_buffer [2021-11-20 06:13:37,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex_of_debug_buffer [2021-11-20 06:13:37,917 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-20 06:13:37,917 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-20 06:13:37,917 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2021-11-20 06:13:37,917 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2021-11-20 06:13:37,917 INFO L130 BoogieDeclarations]: Found specification of procedure cpu_to_hc32 [2021-11-20 06:13:37,917 INFO L138 BoogieDeclarations]: Found implementation of procedure cpu_to_hc32 [2021-11-20 06:13:37,917 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-20 06:13:37,918 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-20 06:13:37,918 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_usb_reset [2021-11-20 06:13:37,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_usb_reset [2021-11-20 06:13:37,918 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_bus_resume [2021-11-20 06:13:37,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_bus_resume [2021-11-20 06:13:37,918 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2021-11-20 06:13:37,918 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2021-11-20 06:13:37,918 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-20 06:13:37,918 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-20 06:13:37,918 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_bus_suspend [2021-11-20 06:13:37,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_bus_suspend [2021-11-20 06:13:37,919 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_platform_reset [2021-11-20 06:13:37,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_platform_reset [2021-11-20 06:13:37,919 INFO L130 BoogieDeclarations]: Found specification of procedure usb_hcd_pci_shutdown [2021-11-20 06:13:37,919 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_hcd_pci_shutdown [2021-11-20 06:13:37,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 06:13:37,919 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 06:13:37,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 06:13:37,919 INFO L130 BoogieDeclarations]: Found specification of procedure dma_pool_free [2021-11-20 06:13:37,919 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_pool_free [2021-11-20 06:13:39,095 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 06:13:39,098 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 06:13:47,609 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 06:13:47,653 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 06:13:47,653 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-20 06:13:47,659 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:13:47 BoogieIcfgContainer [2021-11-20 06:13:47,659 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 06:13:47,663 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 06:13:47,663 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 06:13:47,667 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 06:13:47,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 06:13:32" (1/3) ... [2021-11-20 06:13:47,668 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4058b633 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:13:47, skipping insertion in model container [2021-11-20 06:13:47,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:13:36" (2/3) ... [2021-11-20 06:13:47,669 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4058b633 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:13:47, skipping insertion in model container [2021-11-20 06:13:47,669 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:13:47" (3/3) ... [2021-11-20 06:13:47,670 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--usb--host--ohci-hcd.ko-main.cil.out.i [2021-11-20 06:13:47,676 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 06:13:47,676 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 06:13:47,753 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 06:13:47,761 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 06:13:47,762 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 06:13:47,863 INFO L276 IsEmpty]: Start isEmpty. Operand has 3313 states, 2331 states have (on average 1.3951093951093951) internal successors, (3252), 2402 states have internal predecessors, (3252), 848 states have call successors, (848), 136 states have call predecessors, (848), 136 states have return successors, (848), 839 states have call predecessors, (848), 848 states have call successors, (848) [2021-11-20 06:13:47,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-20 06:13:47,869 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:13:47,869 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:13:47,870 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:13:47,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:13:47,875 INFO L85 PathProgramCache]: Analyzing trace with hash -825410595, now seen corresponding path program 1 times [2021-11-20 06:13:47,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:13:47,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448424311] [2021-11-20 06:13:47,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:13:47,885 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:13:48,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:13:48,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:13:48,680 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:13:48,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448424311] [2021-11-20 06:13:48,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448424311] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:13:48,681 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:13:48,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 06:13:48,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314711631] [2021-11-20 06:13:48,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:13:48,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:13:48,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:13:48,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:13:48,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:13:48,722 INFO L87 Difference]: Start difference. First operand has 3313 states, 2331 states have (on average 1.3951093951093951) internal successors, (3252), 2402 states have internal predecessors, (3252), 848 states have call successors, (848), 136 states have call predecessors, (848), 136 states have return successors, (848), 839 states have call predecessors, (848), 848 states have call successors, (848) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:13:49,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:13:49,591 INFO L93 Difference]: Finished difference Result 9883 states and 15013 transitions. [2021-11-20 06:13:49,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:13:49,594 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-20 06:13:49,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:13:49,688 INFO L225 Difference]: With dead ends: 9883 [2021-11-20 06:13:49,688 INFO L226 Difference]: Without dead ends: 6563 [2021-11-20 06:13:49,736 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:13:49,742 INFO L933 BasicCegarLoop]: 7168 mSDtfsCounter, 4872 mSDsluCounter, 4897 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4872 SdHoareTripleChecker+Valid, 12065 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:13:49,744 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4872 Valid, 12065 Invalid, 17 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 06:13:49,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6563 states. [2021-11-20 06:13:50,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6563 to 6549. [2021-11-20 06:13:50,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6549 states, 4600 states have (on average 1.393695652173913) internal successors, (6411), 4734 states have internal predecessors, (6411), 1678 states have call successors, (1678), 271 states have call predecessors, (1678), 270 states have return successors, (1672), 1653 states have call predecessors, (1672), 1672 states have call successors, (1672) [2021-11-20 06:13:50,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6549 states to 6549 states and 9761 transitions. [2021-11-20 06:13:50,334 INFO L78 Accepts]: Start accepts. Automaton has 6549 states and 9761 transitions. Word has length 14 [2021-11-20 06:13:50,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:13:50,334 INFO L470 AbstractCegarLoop]: Abstraction has 6549 states and 9761 transitions. [2021-11-20 06:13:50,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:13:50,336 INFO L276 IsEmpty]: Start isEmpty. Operand 6549 states and 9761 transitions. [2021-11-20 06:13:50,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-20 06:13:50,347 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:13:50,347 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:13:50,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 06:13:50,348 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:13:50,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:13:50,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1327585593, now seen corresponding path program 1 times [2021-11-20 06:13:50,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:13:50,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615121405] [2021-11-20 06:13:50,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:13:50,350 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:13:50,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:13:50,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:13:50,830 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:13:50,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615121405] [2021-11-20 06:13:50,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615121405] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:13:50,831 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:13:50,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 06:13:50,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468288993] [2021-11-20 06:13:50,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:13:50,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:13:50,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:13:50,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:13:50,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:13:50,838 INFO L87 Difference]: Start difference. First operand 6549 states and 9761 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:13:51,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:13:51,414 INFO L93 Difference]: Finished difference Result 19597 states and 29203 transitions. [2021-11-20 06:13:51,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:13:51,415 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-20 06:13:51,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:13:51,548 INFO L225 Difference]: With dead ends: 19597 [2021-11-20 06:13:51,549 INFO L226 Difference]: Without dead ends: 13051 [2021-11-20 06:13:51,593 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:13:51,594 INFO L933 BasicCegarLoop]: 6326 mSDtfsCounter, 4864 mSDsluCounter, 4891 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4864 SdHoareTripleChecker+Valid, 11217 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:13:51,595 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4864 Valid, 11217 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:13:51,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13051 states. [2021-11-20 06:13:52,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13051 to 13037. [2021-11-20 06:13:52,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13037 states, 9154 states have (on average 1.392724492025344) internal successors, (12749), 9418 states have internal predecessors, (12749), 3342 states have call successors, (3342), 541 states have call predecessors, (3342), 540 states have return successors, (3336), 3297 states have call predecessors, (3336), 3336 states have call successors, (3336) [2021-11-20 06:13:52,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13037 states to 13037 states and 19427 transitions. [2021-11-20 06:13:52,571 INFO L78 Accepts]: Start accepts. Automaton has 13037 states and 19427 transitions. Word has length 16 [2021-11-20 06:13:52,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:13:52,572 INFO L470 AbstractCegarLoop]: Abstraction has 13037 states and 19427 transitions. [2021-11-20 06:13:52,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:13:52,573 INFO L276 IsEmpty]: Start isEmpty. Operand 13037 states and 19427 transitions. [2021-11-20 06:13:52,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-20 06:13:52,575 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:13:52,575 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:13:52,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 06:13:52,576 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:13:52,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:13:52,577 INFO L85 PathProgramCache]: Analyzing trace with hash -269818897, now seen corresponding path program 1 times [2021-11-20 06:13:52,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:13:52,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876259375] [2021-11-20 06:13:52,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:13:52,577 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:13:52,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:13:52,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:13:52,910 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:13:52,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876259375] [2021-11-20 06:13:52,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876259375] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:13:52,911 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:13:52,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 06:13:52,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657740276] [2021-11-20 06:13:52,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:13:52,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:13:52,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:13:52,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:13:52,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:13:52,913 INFO L87 Difference]: Start difference. First operand 13037 states and 19427 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:13:54,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:13:54,073 INFO L93 Difference]: Finished difference Result 38959 states and 58058 transitions. [2021-11-20 06:13:54,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:13:54,074 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-20 06:13:54,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:13:54,530 INFO L225 Difference]: With dead ends: 38959 [2021-11-20 06:13:54,530 INFO L226 Difference]: Without dead ends: 25925 [2021-11-20 06:13:54,604 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:13:54,610 INFO L933 BasicCegarLoop]: 6747 mSDtfsCounter, 4862 mSDsluCounter, 4891 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4862 SdHoareTripleChecker+Valid, 11638 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:13:54,611 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4862 Valid, 11638 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:13:54,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25925 states. [2021-11-20 06:13:55,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25925 to 25911. [2021-11-20 06:13:55,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25911 states, 18183 states have (on average 1.3920695154814937) internal successors, (25312), 18706 states have internal predecessors, (25312), 6654 states have call successors, (6654), 1074 states have call predecessors, (6654), 1073 states have return successors, (6648), 6569 states have call predecessors, (6648), 6648 states have call successors, (6648) [2021-11-20 06:13:56,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25911 states to 25911 states and 38614 transitions. [2021-11-20 06:13:56,315 INFO L78 Accepts]: Start accepts. Automaton has 25911 states and 38614 transitions. Word has length 18 [2021-11-20 06:13:56,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:13:56,315 INFO L470 AbstractCegarLoop]: Abstraction has 25911 states and 38614 transitions. [2021-11-20 06:13:56,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:13:56,316 INFO L276 IsEmpty]: Start isEmpty. Operand 25911 states and 38614 transitions. [2021-11-20 06:13:56,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-20 06:13:56,322 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:13:56,322 INFO L514 BasicCegarLoop]: 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] [2021-11-20 06:13:56,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 06:13:56,322 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:13:56,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:13:56,323 INFO L85 PathProgramCache]: Analyzing trace with hash 1935095309, now seen corresponding path program 1 times [2021-11-20 06:13:56,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:13:56,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334377386] [2021-11-20 06:13:56,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:13:56,324 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:13:56,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:13:56,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-20 06:13:56,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:13:56,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:13:56,763 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:13:56,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334377386] [2021-11-20 06:13:56,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334377386] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:13:56,763 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:13:56,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 06:13:56,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156500509] [2021-11-20 06:13:56,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:13:56,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 06:13:56,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:13:56,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 06:13:56,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:13:56,769 INFO L87 Difference]: Start difference. First operand 25911 states and 38614 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 06:13:57,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:13:57,924 INFO L93 Difference]: Finished difference Result 51854 states and 77278 transitions. [2021-11-20 06:13:57,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 06:13:57,925 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2021-11-20 06:13:57,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:13:58,120 INFO L225 Difference]: With dead ends: 51854 [2021-11-20 06:13:58,121 INFO L226 Difference]: Without dead ends: 25946 [2021-11-20 06:13:58,238 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:13:58,246 INFO L933 BasicCegarLoop]: 4906 mSDtfsCounter, 22 mSDsluCounter, 9807 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 14713 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:13:58,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 14713 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:13:58,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25946 states. [2021-11-20 06:13:59,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25946 to 25914. [2021-11-20 06:13:59,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25914 states, 18186 states have (on average 1.392004838887056) internal successors, (25315), 18709 states have internal predecessors, (25315), 6654 states have call successors, (6654), 1074 states have call predecessors, (6654), 1073 states have return successors, (6648), 6569 states have call predecessors, (6648), 6648 states have call successors, (6648) [2021-11-20 06:13:59,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25914 states to 25914 states and 38617 transitions. [2021-11-20 06:13:59,841 INFO L78 Accepts]: Start accepts. Automaton has 25914 states and 38617 transitions. Word has length 29 [2021-11-20 06:13:59,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:13:59,841 INFO L470 AbstractCegarLoop]: Abstraction has 25914 states and 38617 transitions. [2021-11-20 06:13:59,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 06:13:59,842 INFO L276 IsEmpty]: Start isEmpty. Operand 25914 states and 38617 transitions. [2021-11-20 06:13:59,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-20 06:13:59,846 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:13:59,847 INFO L514 BasicCegarLoop]: 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] [2021-11-20 06:13:59,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-20 06:13:59,847 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:13:59,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:13:59,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1992353611, now seen corresponding path program 1 times [2021-11-20 06:13:59,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:13:59,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445359847] [2021-11-20 06:13:59,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:13:59,848 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:13:59,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:14:00,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-20 06:14:00,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:14:00,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:14:00,131 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:14:00,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445359847] [2021-11-20 06:14:00,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445359847] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:14:00,131 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:14:00,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 06:14:00,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499363481] [2021-11-20 06:14:00,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:14:00,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:14:00,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:14:00,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:14:00,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:14:00,133 INFO L87 Difference]: Start difference. First operand 25914 states and 38617 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 06:14:01,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:14:01,032 INFO L93 Difference]: Finished difference Result 25916 states and 38618 transitions. [2021-11-20 06:14:01,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:14:01,032 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2021-11-20 06:14:01,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:14:01,217 INFO L225 Difference]: With dead ends: 25916 [2021-11-20 06:14:01,217 INFO L226 Difference]: Without dead ends: 25913 [2021-11-20 06:14:01,241 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:14:01,242 INFO L933 BasicCegarLoop]: 4906 mSDtfsCounter, 4884 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4884 SdHoareTripleChecker+Valid, 4906 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:14:01,243 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4884 Valid, 4906 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:14:01,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25913 states. [2021-11-20 06:14:02,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25913 to 25913. [2021-11-20 06:14:02,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25913 states, 18186 states have (on average 1.391949851534147) internal successors, (25314), 18708 states have internal predecessors, (25314), 6653 states have call successors, (6653), 1074 states have call predecessors, (6653), 1073 states have return successors, (6648), 6569 states have call predecessors, (6648), 6648 states have call successors, (6648) [2021-11-20 06:14:02,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25913 states to 25913 states and 38615 transitions. [2021-11-20 06:14:02,646 INFO L78 Accepts]: Start accepts. Automaton has 25913 states and 38615 transitions. Word has length 29 [2021-11-20 06:14:02,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:14:02,647 INFO L470 AbstractCegarLoop]: Abstraction has 25913 states and 38615 transitions. [2021-11-20 06:14:02,647 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 06:14:02,648 INFO L276 IsEmpty]: Start isEmpty. Operand 25913 states and 38615 transitions. [2021-11-20 06:14:02,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-20 06:14:02,652 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:14:02,652 INFO L514 BasicCegarLoop]: 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] [2021-11-20 06:14:02,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-20 06:14:02,652 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:14:02,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:14:02,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1631933668, now seen corresponding path program 1 times [2021-11-20 06:14:02,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:14:02,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948397481] [2021-11-20 06:14:02,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:14:02,654 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:14:02,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:14:03,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-20 06:14:03,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:14:03,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:14:03,158 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:14:03,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948397481] [2021-11-20 06:14:03,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948397481] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:14:03,159 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:14:03,159 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 06:14:03,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983900496] [2021-11-20 06:14:03,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:14:03,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:14:03,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:14:03,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:14:03,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:14:03,161 INFO L87 Difference]: Start difference. First operand 25913 states and 38615 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 06:14:03,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:14:03,977 INFO L93 Difference]: Finished difference Result 25915 states and 38616 transitions. [2021-11-20 06:14:03,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:14:03,978 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2021-11-20 06:14:03,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:14:04,156 INFO L225 Difference]: With dead ends: 25915 [2021-11-20 06:14:04,156 INFO L226 Difference]: Without dead ends: 25912 [2021-11-20 06:14:04,172 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:14:04,173 INFO L933 BasicCegarLoop]: 4904 mSDtfsCounter, 4881 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4881 SdHoareTripleChecker+Valid, 4904 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:14:04,174 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4881 Valid, 4904 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:14:04,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25912 states. [2021-11-20 06:14:05,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25912 to 25912. [2021-11-20 06:14:05,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25912 states, 18186 states have (on average 1.3918948641812383) internal successors, (25313), 18707 states have internal predecessors, (25313), 6652 states have call successors, (6652), 1074 states have call predecessors, (6652), 1073 states have return successors, (6648), 6569 states have call predecessors, (6648), 6648 states have call successors, (6648) [2021-11-20 06:14:05,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25912 states to 25912 states and 38613 transitions. [2021-11-20 06:14:05,598 INFO L78 Accepts]: Start accepts. Automaton has 25912 states and 38613 transitions. Word has length 30 [2021-11-20 06:14:05,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:14:05,598 INFO L470 AbstractCegarLoop]: Abstraction has 25912 states and 38613 transitions. [2021-11-20 06:14:05,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 06:14:05,599 INFO L276 IsEmpty]: Start isEmpty. Operand 25912 states and 38613 transitions. [2021-11-20 06:14:05,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-20 06:14:05,604 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:14:05,605 INFO L514 BasicCegarLoop]: 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] [2021-11-20 06:14:05,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-20 06:14:05,605 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:14:05,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:14:05,606 INFO L85 PathProgramCache]: Analyzing trace with hash -951145106, now seen corresponding path program 1 times [2021-11-20 06:14:05,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:14:05,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16383492] [2021-11-20 06:14:05,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:14:05,606 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:14:05,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:14:06,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-20 06:14:06,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:14:06,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:14:06,127 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:14:06,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16383492] [2021-11-20 06:14:06,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16383492] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:14:06,127 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:14:06,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 06:14:06,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213792591] [2021-11-20 06:14:06,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:14:06,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:14:06,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:14:06,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:14:06,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:14:06,129 INFO L87 Difference]: Start difference. First operand 25912 states and 38613 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 06:14:07,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:14:07,285 INFO L93 Difference]: Finished difference Result 40287 states and 59265 transitions. [2021-11-20 06:14:07,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:14:07,286 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2021-11-20 06:14:07,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:14:07,476 INFO L225 Difference]: With dead ends: 40287 [2021-11-20 06:14:07,476 INFO L226 Difference]: Without dead ends: 40283 [2021-11-20 06:14:07,497 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:14:07,499 INFO L933 BasicCegarLoop]: 5455 mSDtfsCounter, 4844 mSDsluCounter, 2979 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4844 SdHoareTripleChecker+Valid, 8434 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:14:07,499 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4844 Valid, 8434 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:14:07,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40283 states. [2021-11-20 06:14:09,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40283 to 40281. [2021-11-20 06:14:09,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40281 states, 28147 states have (on average 1.3720467545386719) internal successors, (38619), 28925 states have internal predecessors, (38619), 10318 states have call successors, (10318), 1816 states have call predecessors, (10318), 1815 states have return successors, (10316), 10202 states have call predecessors, (10316), 10316 states have call successors, (10316) [2021-11-20 06:14:09,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40281 states to 40281 states and 59253 transitions. [2021-11-20 06:14:09,683 INFO L78 Accepts]: Start accepts. Automaton has 40281 states and 59253 transitions. Word has length 31 [2021-11-20 06:14:09,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:14:09,684 INFO L470 AbstractCegarLoop]: Abstraction has 40281 states and 59253 transitions. [2021-11-20 06:14:09,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 06:14:09,684 INFO L276 IsEmpty]: Start isEmpty. Operand 40281 states and 59253 transitions. [2021-11-20 06:14:09,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-20 06:14:09,688 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:14:09,689 INFO L514 BasicCegarLoop]: 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] [2021-11-20 06:14:09,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-20 06:14:09,689 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:14:09,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:14:09,690 INFO L85 PathProgramCache]: Analyzing trace with hash 577796391, now seen corresponding path program 1 times [2021-11-20 06:14:09,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:14:09,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950180845] [2021-11-20 06:14:09,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:14:09,692 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:14:09,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:14:09,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-20 06:14:09,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:14:09,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:14:09,952 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:14:09,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950180845] [2021-11-20 06:14:09,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950180845] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:14:09,953 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:14:09,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 06:14:09,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339819610] [2021-11-20 06:14:09,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:14:09,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:14:09,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:14:09,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:14:09,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:14:09,955 INFO L87 Difference]: Start difference. First operand 40281 states and 59253 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 06:14:11,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:14:11,107 INFO L93 Difference]: Finished difference Result 40283 states and 59254 transitions. [2021-11-20 06:14:11,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:14:11,114 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 32 [2021-11-20 06:14:11,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:14:11,482 INFO L225 Difference]: With dead ends: 40283 [2021-11-20 06:14:11,482 INFO L226 Difference]: Without dead ends: 40191 [2021-11-20 06:14:11,510 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:14:11,511 INFO L933 BasicCegarLoop]: 4899 mSDtfsCounter, 4873 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4873 SdHoareTripleChecker+Valid, 4899 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:14:11,512 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4873 Valid, 4899 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:14:11,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40191 states. [2021-11-20 06:14:13,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40191 to 40191. [2021-11-20 06:14:13,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40191 states, 28098 states have (on average 1.3718414122001565) internal successors, (38546), 28868 states have internal predecessors, (38546), 10285 states have call successors, (10285), 1808 states have call predecessors, (10285), 1807 states have return successors, (10284), 10177 states have call predecessors, (10284), 10284 states have call successors, (10284) [2021-11-20 06:14:13,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40191 states to 40191 states and 59115 transitions. [2021-11-20 06:14:13,522 INFO L78 Accepts]: Start accepts. Automaton has 40191 states and 59115 transitions. Word has length 32 [2021-11-20 06:14:13,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:14:13,523 INFO L470 AbstractCegarLoop]: Abstraction has 40191 states and 59115 transitions. [2021-11-20 06:14:13,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 06:14:13,523 INFO L276 IsEmpty]: Start isEmpty. Operand 40191 states and 59115 transitions. [2021-11-20 06:14:13,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-20 06:14:13,548 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:14:13,548 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-20 06:14:13,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-20 06:14:13,548 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:14:13,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:14:13,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1062285101, now seen corresponding path program 1 times [2021-11-20 06:14:13,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:14:13,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830682933] [2021-11-20 06:14:13,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:14:13,550 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:14:13,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:14:13,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-20 06:14:13,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:14:13,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-20 06:14:13,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:14:13,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-20 06:14:13,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:14:13,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-20 06:14:13,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:14:13,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:14:13,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:14:13,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-20 06:14:13,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:14:13,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-11-20 06:14:13,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:14:13,963 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:14:13,963 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:14:13,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830682933] [2021-11-20 06:14:13,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830682933] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:14:13,964 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:14:13,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 06:14:13,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103965207] [2021-11-20 06:14:13,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:14:13,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 06:14:13,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:14:13,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 06:14:13,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:14:13,967 INFO L87 Difference]: Start difference. First operand 40191 states and 59115 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-20 06:14:23,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:14:23,217 INFO L93 Difference]: Finished difference Result 108621 states and 161333 transitions. [2021-11-20 06:14:23,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 06:14:23,218 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 75 [2021-11-20 06:14:23,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:14:23,593 INFO L225 Difference]: With dead ends: 108621 [2021-11-20 06:14:23,593 INFO L226 Difference]: Without dead ends: 68433 [2021-11-20 06:14:23,763 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:14:23,764 INFO L933 BasicCegarLoop]: 9327 mSDtfsCounter, 5705 mSDsluCounter, 9185 mSDsCounter, 0 mSdLazyCounter, 2858 mSolverCounterSat, 1859 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6525 SdHoareTripleChecker+Valid, 18512 SdHoareTripleChecker+Invalid, 4717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1859 IncrementalHoareTripleChecker+Valid, 2858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2021-11-20 06:14:23,764 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6525 Valid, 18512 Invalid, 4717 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1859 Valid, 2858 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2021-11-20 06:14:23,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68433 states. [2021-11-20 06:14:27,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68433 to 59224. [2021-11-20 06:14:27,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59224 states, 41416 states have (on average 1.372416457407765) internal successors, (56840), 42552 states have internal predecessors, (56840), 15153 states have call successors, (15153), 2655 states have call predecessors, (15153), 2654 states have return successors, (15152), 14994 states have call predecessors, (15152), 15152 states have call successors, (15152) [2021-11-20 06:14:27,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59224 states to 59224 states and 87145 transitions. [2021-11-20 06:14:27,316 INFO L78 Accepts]: Start accepts. Automaton has 59224 states and 87145 transitions. Word has length 75 [2021-11-20 06:14:27,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:14:27,317 INFO L470 AbstractCegarLoop]: Abstraction has 59224 states and 87145 transitions. [2021-11-20 06:14:27,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-20 06:14:27,317 INFO L276 IsEmpty]: Start isEmpty. Operand 59224 states and 87145 transitions. [2021-11-20 06:14:27,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-20 06:14:27,342 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:14:27,342 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1] [2021-11-20 06:14:27,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-20 06:14:27,343 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:14:27,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:14:27,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1878818405, now seen corresponding path program 1 times [2021-11-20 06:14:27,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:14:27,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701496254] [2021-11-20 06:14:27,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:14:27,344 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:14:27,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:14:27,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-20 06:14:27,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:14:27,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-20 06:14:27,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:14:27,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-20 06:14:27,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:14:27,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-20 06:14:27,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:14:27,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:14:27,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:14:27,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-20 06:14:27,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:14:27,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-11-20 06:14:27,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:14:27,685 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:14:27,686 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:14:27,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701496254] [2021-11-20 06:14:27,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701496254] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:14:27,686 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:14:27,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 06:14:27,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505130750] [2021-11-20 06:14:27,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:14:27,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 06:14:27,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:14:27,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 06:14:27,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:14:27,688 INFO L87 Difference]: Start difference. First operand 59224 states and 87145 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-20 06:14:37,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:14:37,403 INFO L93 Difference]: Finished difference Result 159432 states and 236929 transitions. [2021-11-20 06:14:37,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 06:14:37,403 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 79 [2021-11-20 06:14:37,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:14:37,936 INFO L225 Difference]: With dead ends: 159432 [2021-11-20 06:14:37,936 INFO L226 Difference]: Without dead ends: 100211 [2021-11-20 06:14:38,147 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:14:38,147 INFO L933 BasicCegarLoop]: 9360 mSDtfsCounter, 5727 mSDsluCounter, 9261 mSDsCounter, 0 mSdLazyCounter, 2858 mSolverCounterSat, 1848 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6547 SdHoareTripleChecker+Valid, 18621 SdHoareTripleChecker+Invalid, 4706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1848 IncrementalHoareTripleChecker+Valid, 2858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:14:38,148 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6547 Valid, 18621 Invalid, 4706 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1848 Valid, 2858 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2021-11-20 06:14:38,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100211 states. [2021-11-20 06:14:42,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100211 to 86716. [2021-11-20 06:14:42,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86716 states, 60662 states have (on average 1.3732484916422143) internal successors, (83304), 62328 states have internal predecessors, (83304), 22185 states have call successors, (22185), 3869 states have call predecessors, (22185), 3868 states have return successors, (22184), 21952 states have call predecessors, (22184), 22184 states have call successors, (22184) [2021-11-20 06:14:42,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86716 states to 86716 states and 127673 transitions. [2021-11-20 06:14:42,977 INFO L78 Accepts]: Start accepts. Automaton has 86716 states and 127673 transitions. Word has length 79 [2021-11-20 06:14:42,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:14:42,978 INFO L470 AbstractCegarLoop]: Abstraction has 86716 states and 127673 transitions. [2021-11-20 06:14:42,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-20 06:14:42,978 INFO L276 IsEmpty]: Start isEmpty. Operand 86716 states and 127673 transitions. [2021-11-20 06:14:42,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-20 06:14:42,997 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:14:42,997 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-20 06:14:42,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-20 06:14:42,997 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:14:42,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:14:42,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1311107985, now seen corresponding path program 1 times [2021-11-20 06:14:42,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:14:42,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436853255] [2021-11-20 06:14:42,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:14:42,999 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:14:43,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:14:43,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-20 06:14:43,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:14:43,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-20 06:14:43,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:14:43,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-20 06:14:43,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:14:43,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-20 06:14:43,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:14:43,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:14:43,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:14:43,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-20 06:14:43,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:14:43,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-20 06:14:43,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:14:43,294 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:14:43,294 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:14:43,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436853255] [2021-11-20 06:14:43,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436853255] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:14:43,295 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:14:43,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 06:14:43,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193629818] [2021-11-20 06:14:43,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:14:43,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 06:14:43,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:14:43,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 06:14:43,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:14:43,297 INFO L87 Difference]: Start difference. First operand 86716 states and 127673 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-20 06:14:53,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:14:53,933 INFO L93 Difference]: Finished difference Result 232160 states and 345280 transitions. [2021-11-20 06:14:53,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 06:14:53,933 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 77 [2021-11-20 06:14:53,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:14:54,696 INFO L225 Difference]: With dead ends: 232160 [2021-11-20 06:14:54,696 INFO L226 Difference]: Without dead ends: 145447 [2021-11-20 06:14:55,288 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:14:55,289 INFO L933 BasicCegarLoop]: 9372 mSDtfsCounter, 5696 mSDsluCounter, 9221 mSDsCounter, 0 mSdLazyCounter, 2858 mSolverCounterSat, 1847 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6518 SdHoareTripleChecker+Valid, 18593 SdHoareTripleChecker+Invalid, 4705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1847 IncrementalHoareTripleChecker+Valid, 2858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2021-11-20 06:14:55,289 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6518 Valid, 18593 Invalid, 4705 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1847 Valid, 2858 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2021-11-20 06:14:55,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145447 states.