./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--misc--ftdi-elan.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a00f5fbe-a9e2-498b-a23c-714c1b040780/bin/uautomizer-tBqnrhUYjU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a00f5fbe-a9e2-498b-a23c-714c1b040780/bin/uautomizer-tBqnrhUYjU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a00f5fbe-a9e2-498b-a23c-714c1b040780/bin/uautomizer-tBqnrhUYjU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a00f5fbe-a9e2-498b-a23c-714c1b040780/bin/uautomizer-tBqnrhUYjU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--misc--ftdi-elan.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a00f5fbe-a9e2-498b-a23c-714c1b040780/bin/uautomizer-tBqnrhUYjU/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a00f5fbe-a9e2-498b-a23c-714c1b040780/bin/uautomizer-tBqnrhUYjU --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 2753d752216607180728226381b5a5c2bb1273cd3c02dbf53b55cd0db95c4306 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-02 22:31:38,157 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 22:31:38,159 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 22:31:38,195 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 22:31:38,196 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 22:31:38,198 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 22:31:38,200 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 22:31:38,202 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 22:31:38,205 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 22:31:38,206 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 22:31:38,208 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 22:31:38,209 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 22:31:38,210 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 22:31:38,212 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 22:31:38,217 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 22:31:38,219 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 22:31:38,221 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 22:31:38,222 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 22:31:38,225 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 22:31:38,228 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 22:31:38,230 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 22:31:38,243 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 22:31:38,245 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 22:31:38,246 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 22:31:38,250 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 22:31:38,251 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 22:31:38,251 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 22:31:38,256 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 22:31:38,257 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 22:31:38,259 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 22:31:38,261 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 22:31:38,262 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 22:31:38,264 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 22:31:38,265 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 22:31:38,267 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 22:31:38,267 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 22:31:38,268 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 22:31:38,269 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 22:31:38,269 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 22:31:38,270 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 22:31:38,271 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 22:31:38,272 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a00f5fbe-a9e2-498b-a23c-714c1b040780/bin/uautomizer-tBqnrhUYjU/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-02 22:31:38,328 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 22:31:38,328 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 22:31:38,329 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 22:31:38,329 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 22:31:38,341 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 22:31:38,341 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 22:31:38,341 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 22:31:38,342 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 22:31:38,342 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 22:31:38,342 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 22:31:38,342 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 22:31:38,343 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 22:31:38,343 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 22:31:38,343 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 22:31:38,343 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 22:31:38,343 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 22:31:38,344 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 22:31:38,344 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 22:31:38,344 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 22:31:38,344 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:31:38,345 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 22:31:38,345 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 22:31:38,345 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 22:31:38,345 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 22:31:38,345 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 22:31:38,346 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 22:31:38,346 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 22:31:38,346 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 22:31:38,346 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 22:31:38,346 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_a00f5fbe-a9e2-498b-a23c-714c1b040780/bin/uautomizer-tBqnrhUYjU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a00f5fbe-a9e2-498b-a23c-714c1b040780/bin/uautomizer-tBqnrhUYjU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2753d752216607180728226381b5a5c2bb1273cd3c02dbf53b55cd0db95c4306 [2021-11-02 22:31:38,675 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 22:31:38,717 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 22:31:38,720 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 22:31:38,722 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 22:31:38,724 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 22:31:38,725 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a00f5fbe-a9e2-498b-a23c-714c1b040780/bin/uautomizer-tBqnrhUYjU/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--misc--ftdi-elan.ko-entry_point.cil.out.i [2021-11-02 22:31:38,804 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a00f5fbe-a9e2-498b-a23c-714c1b040780/bin/uautomizer-tBqnrhUYjU/data/66d8677d0/f571f14e28b2475fae23f2f4d0580b7b/FLAG4b273a5d2 [2021-11-02 22:31:39,851 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 22:31:39,853 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a00f5fbe-a9e2-498b-a23c-714c1b040780/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--misc--ftdi-elan.ko-entry_point.cil.out.i [2021-11-02 22:31:39,925 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a00f5fbe-a9e2-498b-a23c-714c1b040780/bin/uautomizer-tBqnrhUYjU/data/66d8677d0/f571f14e28b2475fae23f2f4d0580b7b/FLAG4b273a5d2 [2021-11-02 22:31:40,125 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a00f5fbe-a9e2-498b-a23c-714c1b040780/bin/uautomizer-tBqnrhUYjU/data/66d8677d0/f571f14e28b2475fae23f2f4d0580b7b [2021-11-02 22:31:40,128 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 22:31:40,129 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 22:31:40,154 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 22:31:40,154 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 22:31:40,168 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 22:31:40,170 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:31:40" (1/1) ... [2021-11-02 22:31:40,172 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46c1278c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:31:40, skipping insertion in model container [2021-11-02 22:31:40,173 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:31:40" (1/1) ... [2021-11-02 22:31:40,183 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 22:31:40,415 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 22:31:43,564 WARN L228 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_a00f5fbe-a9e2-498b-a23c-714c1b040780/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--misc--ftdi-elan.ko-entry_point.cil.out.i[277173,277186] [2021-11-02 22:31:43,837 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:31:43,893 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 22:31:44,441 WARN L228 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_a00f5fbe-a9e2-498b-a23c-714c1b040780/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--misc--ftdi-elan.ko-entry_point.cil.out.i[277173,277186] [2021-11-02 22:31:44,462 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:31:44,646 INFO L208 MainTranslator]: Completed translation [2021-11-02 22:31:44,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:31:44 WrapperNode [2021-11-02 22:31:44,647 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 22:31:44,679 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 22:31:44,679 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 22:31:44,679 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 22:31:44,689 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:31:44" (1/1) ... [2021-11-02 22:31:44,816 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:31:44" (1/1) ... [2021-11-02 22:31:48,638 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 22:31:48,639 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 22:31:48,639 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 22:31:48,639 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 22:31:48,659 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:31:44" (1/1) ... [2021-11-02 22:31:48,659 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:31:44" (1/1) ... [2021-11-02 22:31:49,206 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:31:44" (1/1) ... [2021-11-02 22:31:49,207 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:31:44" (1/1) ... [2021-11-02 22:31:50,911 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:31:44" (1/1) ... [2021-11-02 22:31:51,383 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:31:44" (1/1) ... [2021-11-02 22:31:51,493 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:31:44" (1/1) ... [2021-11-02 22:31:51,853 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 22:31:51,855 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 22:31:51,856 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 22:31:51,857 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 22:31:51,858 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:31:44" (1/1) ... [2021-11-02 22:31:51,865 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:31:51,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a00f5fbe-a9e2-498b-a23c-714c1b040780/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:31:51,894 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a00f5fbe-a9e2-498b-a23c-714c1b040780/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-02 22:31:51,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a00f5fbe-a9e2-498b-a23c-714c1b040780/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-02 22:31:51,942 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2021-11-02 22:31:51,942 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2021-11-02 22:31:51,942 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_status_work [2021-11-02 22:31:51,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_status_work [2021-11-02 22:31:51,944 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_response_cancel_work [2021-11-02 22:31:51,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_response_cancel_work [2021-11-02 22:31:51,944 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 22:31:51,944 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-02 22:31:51,944 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-11-02 22:31:51,944 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_1 [2021-11-02 22:31:51,945 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_1 [2021-11-02 22:31:51,945 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_status_cancel_work [2021-11-02 22:31:51,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_status_cancel_work [2021-11-02 22:31:51,945 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 22:31:51,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-02 22:31:51,945 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_command_cancel_work [2021-11-02 22:31:51,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_command_cancel_work [2021-11-02 22:31:51,946 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_command_requeue_work [2021-11-02 22:31:51,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_command_requeue_work [2021-11-02 22:31:51,946 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_gone_away [2021-11-02 22:31:51,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_gone_away [2021-11-02 22:31:51,946 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_respond_work [2021-11-02 22:31:51,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_respond_work [2021-11-02 22:31:51,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-02 22:31:51,947 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_status_requeue_work [2021-11-02 22:31:51,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_status_requeue_work [2021-11-02 22:31:51,947 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-02 22:31:51,947 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_disconnect [2021-11-02 22:31:51,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_disconnect [2021-11-02 22:31:51,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-02 22:31:51,948 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2021-11-02 22:31:51,948 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2021-11-02 22:31:51,948 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_flush_workqueue_89 [2021-11-02 22:31:51,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_flush_workqueue_89 [2021-11-02 22:31:51,948 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_flush_workqueue_88 [2021-11-02 22:31:51,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_flush_workqueue_88 [2021-11-02 22:31:51,949 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_flush_workqueue_87 [2021-11-02 22:31:51,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_flush_workqueue_87 [2021-11-02 22:31:51,949 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_command_work [2021-11-02 22:31:51,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_command_work [2021-11-02 22:31:51,949 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_elan_put_kref [2021-11-02 22:31:51,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_elan_put_kref [2021-11-02 22:31:51,950 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 22:31:51,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 22:31:51,951 INFO L130 BoogieDeclarations]: Found specification of procedure ftdi_response_requeue_work [2021-11-02 22:31:51,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ftdi_response_requeue_work [2021-11-02 22:31:51,951 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-02 22:31:51,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-02 22:31:51,952 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_all_1 [2021-11-02 22:31:51,952 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_all_1 [2021-11-02 22:31:51,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 22:31:51,952 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 22:31:51,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 22:36:57,721 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 22:36:57,721 INFO L299 CfgBuilder]: Removed 22583 assume(true) statements. [2021-11-02 22:36:57,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:36:57 BoogieIcfgContainer [2021-11-02 22:36:57,742 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 22:36:57,744 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 22:36:57,745 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 22:36:57,748 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 22:36:57,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 10:31:40" (1/3) ... [2021-11-02 22:36:57,750 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1500e83d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:36:57, skipping insertion in model container [2021-11-02 22:36:57,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:31:44" (2/3) ... [2021-11-02 22:36:57,750 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1500e83d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:36:57, skipping insertion in model container [2021-11-02 22:36:57,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:36:57" (3/3) ... [2021-11-02 22:36:57,752 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--usb--misc--ftdi-elan.ko-entry_point.cil.out.i [2021-11-02 22:36:57,758 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 22:36:57,758 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1162 error locations. [2021-11-02 22:36:57,871 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 22:36:57,877 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 [2021-11-02 22:36:57,877 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1162 error locations. [2021-11-02 22:36:58,200 INFO L276 IsEmpty]: Start isEmpty. Operand has 20900 states, 19648 states have (on average 1.4550590390879479) internal successors, (28589), 20826 states have internal predecessors, (28589), 69 states have call successors, (69), 20 states have call predecessors, (69), 20 states have return successors, (69), 61 states have call predecessors, (69), 69 states have call successors, (69) [2021-11-02 22:36:58,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-02 22:36:58,212 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:36:58,212 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:36:58,213 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ftdi_elan_respond_workErr0ASSERT_VIOLATIONERROR_FUNCTION, ftdi_elan_respond_workErr1ASSERT_VIOLATIONERROR_FUNCTION, ftdi_elan_respond_workErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1159 more)] === [2021-11-02 22:36:58,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:36:58,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1333993543, now seen corresponding path program 1 times [2021-11-02 22:36:58,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:36:58,229 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184221068] [2021-11-02 22:36:58,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:36:58,231 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:36:58,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:36:59,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:36:59,058 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:36:59,059 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184221068] [2021-11-02 22:36:59,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184221068] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:36:59,060 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:36:59,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 22:36:59,063 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387391291] [2021-11-02 22:36:59,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-02 22:36:59,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:36:59,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-02 22:36:59,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 22:36:59,146 INFO L87 Difference]: Start difference. First operand has 20900 states, 19648 states have (on average 1.4550590390879479) internal successors, (28589), 20826 states have internal predecessors, (28589), 69 states have call successors, (69), 20 states have call predecessors, (69), 20 states have return successors, (69), 61 states have call predecessors, (69), 69 states have call successors, (69) Second operand has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:37:00,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:37:00,629 INFO L93 Difference]: Finished difference Result 41796 states and 57518 transitions. [2021-11-02 22:37:00,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-02 22:37:00,632 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-11-02 22:37:00,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:37:00,816 INFO L225 Difference]: With dead ends: 41796 [2021-11-02 22:37:00,816 INFO L226 Difference]: Without dead ends: 20889 [2021-11-02 22:37:01,233 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 22:37:01,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20889 states. [2021-11-02 22:37:01,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20889 to 20889. [2021-11-02 22:37:02,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20889 states, 19638 states have (on average 1.3945921173235565) internal successors, (27387), 20815 states have internal predecessors, (27387), 69 states have call successors, (69), 20 states have call predecessors, (69), 20 states have return successors, (69), 61 states have call predecessors, (69), 69 states have call successors, (69) [2021-11-02 22:37:02,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20889 states to 20889 states and 27525 transitions. [2021-11-02 22:37:02,432 INFO L78 Accepts]: Start accepts. Automaton has 20889 states and 27525 transitions. Word has length 51 [2021-11-02 22:37:02,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:37:02,434 INFO L470 AbstractCegarLoop]: Abstraction has 20889 states and 27525 transitions. [2021-11-02 22:37:02,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:37:02,435 INFO L276 IsEmpty]: Start isEmpty. Operand 20889 states and 27525 transitions. [2021-11-02 22:37:02,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-02 22:37:02,447 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:37:02,447 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:37:02,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 22:37:02,448 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ftdi_elan_respond_workErr0ASSERT_VIOLATIONERROR_FUNCTION, ftdi_elan_respond_workErr1ASSERT_VIOLATIONERROR_FUNCTION, ftdi_elan_respond_workErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1159 more)] === [2021-11-02 22:37:02,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:37:02,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1161005581, now seen corresponding path program 1 times [2021-11-02 22:37:02,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:37:02,454 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864121197] [2021-11-02 22:37:02,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:37:02,457 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:37:02,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:37:02,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:37:02,914 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:37:02,914 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864121197] [2021-11-02 22:37:02,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864121197] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:37:02,915 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:37:02,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:37:02,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89716056] [2021-11-02 22:37:02,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:37:02,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:37:02,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:37:02,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:37:02,929 INFO L87 Difference]: Start difference. First operand 20889 states and 27525 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:37:04,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:37:04,587 INFO L93 Difference]: Finished difference Result 41757 states and 55031 transitions. [2021-11-02 22:37:04,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:37:04,588 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-11-02 22:37:04,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:37:04,802 INFO L225 Difference]: With dead ends: 41757 [2021-11-02 22:37:04,803 INFO L226 Difference]: Without dead ends: 20892 [2021-11-02 22:37:04,963 INFO L786 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 [2021-11-02 22:37:05,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20892 states. [2021-11-02 22:37:06,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20892 to 20892. [2021-11-02 22:37:06,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20892 states, 19641 states have (on average 1.3945318466473193) internal successors, (27390), 20818 states have internal predecessors, (27390), 69 states have call successors, (69), 20 states have call predecessors, (69), 20 states have return successors, (69), 61 states have call predecessors, (69), 69 states have call successors, (69) [2021-11-02 22:37:06,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20892 states to 20892 states and 27528 transitions. [2021-11-02 22:37:06,226 INFO L78 Accepts]: Start accepts. Automaton has 20892 states and 27528 transitions. Word has length 51 [2021-11-02 22:37:06,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:37:06,228 INFO L470 AbstractCegarLoop]: Abstraction has 20892 states and 27528 transitions. [2021-11-02 22:37:06,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:37:06,228 INFO L276 IsEmpty]: Start isEmpty. Operand 20892 states and 27528 transitions. [2021-11-02 22:37:06,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-02 22:37:06,234 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:37:06,235 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:37:06,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 22:37:06,235 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ftdi_elan_respond_workErr0ASSERT_VIOLATIONERROR_FUNCTION, ftdi_elan_respond_workErr1ASSERT_VIOLATIONERROR_FUNCTION, ftdi_elan_respond_workErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1159 more)] === [2021-11-02 22:37:06,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:37:06,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1179212570, now seen corresponding path program 1 times [2021-11-02 22:37:06,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:37:06,237 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784013038] [2021-11-02 22:37:06,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:37:06,237 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:37:06,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:37:06,822 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-02 22:37:06,822 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:37:06,823 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784013038] [2021-11-02 22:37:06,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784013038] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:37:06,823 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:37:06,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:37:06,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439038892] [2021-11-02 22:37:06,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:37:06,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:37:06,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:37:06,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:37:06,825 INFO L87 Difference]: Start difference. First operand 20892 states and 27528 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:37:08,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:37:08,032 INFO L93 Difference]: Finished difference Result 41757 states and 55028 transitions. [2021-11-02 22:37:08,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:37:08,033 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-11-02 22:37:08,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:37:08,231 INFO L225 Difference]: With dead ends: 41757 [2021-11-02 22:37:08,231 INFO L226 Difference]: Without dead ends: 20893 [2021-11-02 22:37:08,639 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:37:08,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20893 states. [2021-11-02 22:37:09,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20893 to 20893. [2021-11-02 22:37:09,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20893 states, 19642 states have (on average 1.394511760513186) internal successors, (27391), 20819 states have internal predecessors, (27391), 69 states have call successors, (69), 20 states have call predecessors, (69), 20 states have return successors, (69), 61 states have call predecessors, (69), 69 states have call successors, (69) [2021-11-02 22:37:09,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20893 states to 20893 states and 27529 transitions. [2021-11-02 22:37:09,343 INFO L78 Accepts]: Start accepts. Automaton has 20893 states and 27529 transitions. Word has length 54 [2021-11-02 22:37:09,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:37:09,344 INFO L470 AbstractCegarLoop]: Abstraction has 20893 states and 27529 transitions. [2021-11-02 22:37:09,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:37:09,345 INFO L276 IsEmpty]: Start isEmpty. Operand 20893 states and 27529 transitions. [2021-11-02 22:37:09,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-02 22:37:09,348 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:37:09,348 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:37:09,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-02 22:37:09,349 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ftdi_elan_respond_workErr0ASSERT_VIOLATIONERROR_FUNCTION, ftdi_elan_respond_workErr1ASSERT_VIOLATIONERROR_FUNCTION, ftdi_elan_respond_workErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1159 more)] === [2021-11-02 22:37:09,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:37:09,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1605894831, now seen corresponding path program 1 times [2021-11-02 22:37:09,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:37:09,350 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224207266] [2021-11-02 22:37:09,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:37:09,351 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:37:09,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:37:09,896 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-02 22:37:09,896 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:37:09,902 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224207266] [2021-11-02 22:37:09,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224207266] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:37:09,902 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:37:09,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:37:09,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330320908] [2021-11-02 22:37:09,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:37:09,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:37:09,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:37:09,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:37:09,904 INFO L87 Difference]: Start difference. First operand 20893 states and 27529 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:37:11,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:37:11,785 INFO L93 Difference]: Finished difference Result 62433 states and 82275 transitions. [2021-11-02 22:37:11,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:37:11,785 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-11-02 22:37:11,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:37:12,041 INFO L225 Difference]: With dead ends: 62433 [2021-11-02 22:37:12,043 INFO L226 Difference]: Without dead ends: 41582 [2021-11-02 22:37:12,189 INFO L786 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 [2021-11-02 22:37:12,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41582 states. [2021-11-02 22:37:13,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41582 to 39255. [2021-11-02 22:37:13,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39255 states, 37929 states have (on average 1.4071554747027342) internal successors, (53372), 39121 states have internal predecessors, (53372), 124 states have call successors, (124), 40 states have call predecessors, (124), 40 states have return successors, (124), 108 states have call predecessors, (124), 124 states have call successors, (124) [2021-11-02 22:37:14,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39255 states to 39255 states and 53620 transitions. [2021-11-02 22:37:14,303 INFO L78 Accepts]: Start accepts. Automaton has 39255 states and 53620 transitions. Word has length 55 [2021-11-02 22:37:14,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:37:14,303 INFO L470 AbstractCegarLoop]: Abstraction has 39255 states and 53620 transitions. [2021-11-02 22:37:14,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:37:14,305 INFO L276 IsEmpty]: Start isEmpty. Operand 39255 states and 53620 transitions. [2021-11-02 22:37:14,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-02 22:37:14,307 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:37:14,308 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:37:14,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-02 22:37:14,308 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ftdi_elan_status_workErr0ASSERT_VIOLATIONERROR_FUNCTION === [ftdi_elan_respond_workErr0ASSERT_VIOLATIONERROR_FUNCTION, ftdi_elan_respond_workErr1ASSERT_VIOLATIONERROR_FUNCTION, ftdi_elan_respond_workErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1159 more)] === [2021-11-02 22:37:14,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:37:14,309 INFO L85 PathProgramCache]: Analyzing trace with hash -384333489, now seen corresponding path program 1 times [2021-11-02 22:37:14,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:37:14,309 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238132347] [2021-11-02 22:37:14,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:37:14,310 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:37:14,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:37:14,685 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-02 22:37:14,686 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:37:14,690 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238132347] [2021-11-02 22:37:14,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238132347] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:37:14,690 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:37:14,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 22:37:14,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310950308] [2021-11-02 22:37:14,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:37:14,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:37:14,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:37:14,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:37:14,695 INFO L87 Difference]: Start difference. First operand 39255 states and 53620 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 2 states have internal predecessors, (57), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:37:20,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:37:20,151 INFO L93 Difference]: Finished difference Result 39255 states and 53620 transitions. [2021-11-02 22:37:20,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:37:20,152 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 2 states have internal predecessors, (57), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2021-11-02 22:37:20,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:37:20,293 INFO L225 Difference]: With dead ends: 39255 [2021-11-02 22:37:20,294 INFO L226 Difference]: Without dead ends: 38478 [2021-11-02 22:37:20,322 INFO L786 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 [2021-11-02 22:37:20,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38478 states. [2021-11-02 22:37:21,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38478 to 38478. [2021-11-02 22:37:21,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38478 states, 37540 states have (on average 1.3907298881193393) internal successors, (52208), 38344 states have internal predecessors, (52208), 124 states have call successors, (124), 40 states have call predecessors, (124), 40 states have return successors, (124), 108 states have call predecessors, (124), 124 states have call successors, (124) [2021-11-02 22:37:22,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38478 states to 38478 states and 52456 transitions. [2021-11-02 22:37:22,160 INFO L78 Accepts]: Start accepts. Automaton has 38478 states and 52456 transitions. Word has length 58 [2021-11-02 22:37:22,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:37:22,163 INFO L470 AbstractCegarLoop]: Abstraction has 38478 states and 52456 transitions. [2021-11-02 22:37:22,163 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 2 states have internal predecessors, (57), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:37:22,164 INFO L276 IsEmpty]: Start isEmpty. Operand 38478 states and 52456 transitions. [2021-11-02 22:37:22,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-02 22:37:22,166 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:37:22,167 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:37:22,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-02 22:37:22,167 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ftdi_elan_respond_workErr0ASSERT_VIOLATIONERROR_FUNCTION, ftdi_elan_respond_workErr1ASSERT_VIOLATIONERROR_FUNCTION, ftdi_elan_respond_workErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1159 more)] === [2021-11-02 22:37:22,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:37:22,168 INFO L85 PathProgramCache]: Analyzing trace with hash -426463599, now seen corresponding path program 1 times [2021-11-02 22:37:22,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:37:22,168 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75388980] [2021-11-02 22:37:22,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:37:22,169 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:37:22,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:37:22,499 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-02 22:37:22,499 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:37:22,500 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75388980] [2021-11-02 22:37:22,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75388980] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:37:22,500 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:37:22,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 22:37:22,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098402735] [2021-11-02 22:37:22,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:37:22,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:37:22,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:37:22,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:37:22,503 INFO L87 Difference]: Start difference. First operand 38478 states and 52456 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 2 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:37:23,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:37:23,692 INFO L93 Difference]: Finished difference Result 38478 states and 52456 transitions. [2021-11-02 22:37:23,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:37:23,693 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 2 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-11-02 22:37:23,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:37:23,808 INFO L225 Difference]: With dead ends: 38478 [2021-11-02 22:37:23,808 INFO L226 Difference]: Without dead ends: 38472 [2021-11-02 22:37:23,821 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:37:23,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38472 states. [2021-11-02 22:37:24,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38472 to 38472. [2021-11-02 22:37:24,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38472 states, 37537 states have (on average 1.3906545541732158) internal successors, (52201), 38338 states have internal predecessors, (52201), 124 states have call successors, (124), 40 states have call predecessors, (124), 40 states have return successors, (124), 108 states have call predecessors, (124), 124 states have call successors, (124) [2021-11-02 22:37:25,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38472 states to 38472 states and 52449 transitions. [2021-11-02 22:37:25,224 INFO L78 Accepts]: Start accepts. Automaton has 38472 states and 52449 transitions. Word has length 59 [2021-11-02 22:37:25,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:37:25,225 INFO L470 AbstractCegarLoop]: Abstraction has 38472 states and 52449 transitions. [2021-11-02 22:37:25,225 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 2 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:37:25,225 INFO L276 IsEmpty]: Start isEmpty. Operand 38472 states and 52449 transitions. [2021-11-02 22:37:25,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-02 22:37:25,228 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:37:25,228 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:37:25,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-02 22:37:25,229 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ftdi_elan_respond_workErr0ASSERT_VIOLATIONERROR_FUNCTION, ftdi_elan_respond_workErr1ASSERT_VIOLATIONERROR_FUNCTION, ftdi_elan_respond_workErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1159 more)] === [2021-11-02 22:37:25,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:37:25,230 INFO L85 PathProgramCache]: Analyzing trace with hash -335395155, now seen corresponding path program 1 times [2021-11-02 22:37:25,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:37:25,230 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053060016] [2021-11-02 22:37:25,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:37:25,230 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:37:25,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:37:25,520 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-02 22:37:25,521 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:37:25,521 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053060016] [2021-11-02 22:37:25,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053060016] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:37:25,521 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:37:25,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 22:37:25,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415870899] [2021-11-02 22:37:25,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:37:25,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:37:25,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:37:25,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:37:25,523 INFO L87 Difference]: Start difference. First operand 38472 states and 52449 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:37:26,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:37:26,798 INFO L93 Difference]: Finished difference Result 38472 states and 52449 transitions. [2021-11-02 22:37:26,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:37:26,799 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-11-02 22:37:26,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:37:26,921 INFO L225 Difference]: With dead ends: 38472 [2021-11-02 22:37:26,922 INFO L226 Difference]: Without dead ends: 38470 [2021-11-02 22:37:26,935 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:37:27,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38470 states. [2021-11-02 22:37:28,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38470 to 38470. [2021-11-02 22:37:28,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38470 states, 37536 states have (on average 1.3906383205456097) internal successors, (52199), 38336 states have internal predecessors, (52199), 124 states have call successors, (124), 40 states have call predecessors, (124), 40 states have return successors, (124), 108 states have call predecessors, (124), 124 states have call successors, (124) [2021-11-02 22:37:28,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38470 states to 38470 states and 52447 transitions. [2021-11-02 22:37:28,595 INFO L78 Accepts]: Start accepts. Automaton has 38470 states and 52447 transitions. Word has length 60 [2021-11-02 22:37:28,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:37:28,597 INFO L470 AbstractCegarLoop]: Abstraction has 38470 states and 52447 transitions. [2021-11-02 22:37:28,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:37:28,597 INFO L276 IsEmpty]: Start isEmpty. Operand 38470 states and 52447 transitions. [2021-11-02 22:37:28,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-02 22:37:28,600 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:37:28,600 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:37:28,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-02 22:37:28,601 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ftdi_elan_respond_workErr0ASSERT_VIOLATIONERROR_FUNCTION, ftdi_elan_respond_workErr1ASSERT_VIOLATIONERROR_FUNCTION, ftdi_elan_respond_workErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1159 more)] === [2021-11-02 22:37:28,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:37:28,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1807240677, now seen corresponding path program 1 times [2021-11-02 22:37:28,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:37:28,602 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48162988] [2021-11-02 22:37:28,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:37:28,602 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:37:28,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:37:28,892 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-02 22:37:28,892 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:37:28,893 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48162988] [2021-11-02 22:37:28,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48162988] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:37:28,893 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:37:28,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 22:37:28,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664676166] [2021-11-02 22:37:28,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:37:28,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:37:28,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:37:28,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:37:28,895 INFO L87 Difference]: Start difference. First operand 38470 states and 52447 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 2 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:37:30,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:37:30,152 INFO L93 Difference]: Finished difference Result 38470 states and 52447 transitions. [2021-11-02 22:37:30,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:37:30,153 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 2 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-11-02 22:37:30,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:37:30,475 INFO L225 Difference]: With dead ends: 38470 [2021-11-02 22:37:30,475 INFO L226 Difference]: Without dead ends: 38468 [2021-11-02 22:37:30,485 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:37:30,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38468 states. [2021-11-02 22:37:31,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38468 to 38468. [2021-11-02 22:37:31,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38468 states, 37535 states have (on average 1.3906220860530172) internal successors, (52197), 38334 states have internal predecessors, (52197), 124 states have call successors, (124), 40 states have call predecessors, (124), 40 states have return successors, (124), 108 states have call predecessors, (124), 124 states have call successors, (124) [2021-11-02 22:37:32,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38468 states to 38468 states and 52445 transitions. [2021-11-02 22:37:32,154 INFO L78 Accepts]: Start accepts. Automaton has 38468 states and 52445 transitions. Word has length 61 [2021-11-02 22:37:32,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:37:32,155 INFO L470 AbstractCegarLoop]: Abstraction has 38468 states and 52445 transitions. [2021-11-02 22:37:32,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 2 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:37:32,156 INFO L276 IsEmpty]: Start isEmpty. Operand 38468 states and 52445 transitions. [2021-11-02 22:37:32,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-02 22:37:32,159 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:37:32,159 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:37:32,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-02 22:37:32,160 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ftdi_elan_respond_workErr0ASSERT_VIOLATIONERROR_FUNCTION, ftdi_elan_respond_workErr1ASSERT_VIOLATIONERROR_FUNCTION, ftdi_elan_respond_workErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1159 more)] === [2021-11-02 22:37:32,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:37:32,161 INFO L85 PathProgramCache]: Analyzing trace with hash -189811593, now seen corresponding path program 1 times [2021-11-02 22:37:32,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:37:32,163 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286552825] [2021-11-02 22:37:32,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:37:32,164 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:37:32,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:37:32,437 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-02 22:37:32,437 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:37:32,438 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286552825] [2021-11-02 22:37:32,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286552825] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:37:32,438 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:37:32,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 22:37:32,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219053865] [2021-11-02 22:37:32,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:37:32,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:37:32,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:37:32,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:37:32,444 INFO L87 Difference]: Start difference. First operand 38468 states and 52445 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:37:33,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:37:33,758 INFO L93 Difference]: Finished difference Result 38468 states and 52445 transitions. [2021-11-02 22:37:33,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:37:33,759 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-11-02 22:37:33,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:37:33,859 INFO L225 Difference]: With dead ends: 38468 [2021-11-02 22:37:33,860 INFO L226 Difference]: Without dead ends: 38460 [2021-11-02 22:37:33,882 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:37:33,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38460 states. [2021-11-02 22:37:35,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38460 to 38460. [2021-11-02 22:37:35,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38460 states, 37528 states have (on average 1.3906416542315072) internal successors, (52188), 38327 states have internal predecessors, (52188), 124 states have call successors, (124), 40 states have call predecessors, (124), 40 states have return successors, (123), 107 states have call predecessors, (123), 123 states have call successors, (123) [2021-11-02 22:37:35,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38460 states to 38460 states and 52435 transitions. [2021-11-02 22:37:35,692 INFO L78 Accepts]: Start accepts. Automaton has 38460 states and 52435 transitions. Word has length 62 [2021-11-02 22:37:35,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:37:35,693 INFO L470 AbstractCegarLoop]: Abstraction has 38460 states and 52435 transitions. [2021-11-02 22:37:35,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:37:35,693 INFO L276 IsEmpty]: Start isEmpty. Operand 38460 states and 52435 transitions. [2021-11-02 22:37:35,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-02 22:37:35,697 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:37:35,697 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:37:35,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-02 22:37:35,697 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ftdi_elan_status_workErr2ASSERT_VIOLATIONERROR_FUNCTION === [ftdi_elan_respond_workErr0ASSERT_VIOLATIONERROR_FUNCTION, ftdi_elan_respond_workErr1ASSERT_VIOLATIONERROR_FUNCTION, ftdi_elan_respond_workErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1159 more)] === [2021-11-02 22:37:35,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:37:35,698 INFO L85 PathProgramCache]: Analyzing trace with hash 304718260, now seen corresponding path program 1 times [2021-11-02 22:37:35,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:37:35,698 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303986305] [2021-11-02 22:37:35,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:37:35,699 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:37:35,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:37:35,909 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-02 22:37:35,909 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:37:35,910 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303986305] [2021-11-02 22:37:35,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303986305] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:37:35,910 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:37:35,910 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:37:35,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954287628] [2021-11-02 22:37:35,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:37:35,911 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:37:35,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:37:35,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:37:35,913 INFO L87 Difference]: Start difference. First operand 38460 states and 52435 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:37:42,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:37:42,630 INFO L93 Difference]: Finished difference Result 38460 states and 52435 transitions. [2021-11-02 22:37:42,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:37:42,631 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-02 22:37:42,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:37:42,717 INFO L225 Difference]: With dead ends: 38460 [2021-11-02 22:37:42,717 INFO L226 Difference]: Without dead ends: 36928 [2021-11-02 22:37:42,741 INFO L786 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 [2021-11-02 22:37:42,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36928 states.