./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--gadget--pch_udc.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be860879-c0b6-4aa5-abca-35a4e50b8370/bin/uautomizer-AkOaLMaTGY/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be860879-c0b6-4aa5-abca-35a4e50b8370/bin/uautomizer-AkOaLMaTGY/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be860879-c0b6-4aa5-abca-35a4e50b8370/bin/uautomizer-AkOaLMaTGY/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be860879-c0b6-4aa5-abca-35a4e50b8370/bin/uautomizer-AkOaLMaTGY/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--gadget--pch_udc.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be860879-c0b6-4aa5-abca-35a4e50b8370/bin/uautomizer-AkOaLMaTGY/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be860879-c0b6-4aa5-abca-35a4e50b8370/bin/uautomizer-AkOaLMaTGY --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 b84718ab53315b4fb0ea63ba4ff58d4e41800b214902f4639c5f6698ca2778b0 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 08:22:08,378 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 08:22:08,384 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 08:22:08,445 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 08:22:08,447 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 08:22:08,452 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 08:22:08,454 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 08:22:08,460 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 08:22:08,464 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 08:22:08,471 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 08:22:08,472 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 08:22:08,474 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 08:22:08,475 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 08:22:08,479 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 08:22:08,482 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 08:22:08,492 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 08:22:08,494 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 08:22:08,496 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 08:22:08,499 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 08:22:08,509 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 08:22:08,511 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 08:22:08,513 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 08:22:08,517 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 08:22:08,518 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 08:22:08,530 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 08:22:08,531 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 08:22:08,531 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 08:22:08,534 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 08:22:08,535 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 08:22:08,537 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 08:22:08,538 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 08:22:08,540 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 08:22:08,542 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 08:22:08,544 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 08:22:08,546 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 08:22:08,546 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 08:22:08,547 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 08:22:08,548 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 08:22:08,548 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 08:22:08,550 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 08:22:08,550 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 08:22:08,552 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be860879-c0b6-4aa5-abca-35a4e50b8370/bin/uautomizer-AkOaLMaTGY/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 08:22:08,609 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 08:22:08,612 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 08:22:08,613 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 08:22:08,613 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 08:22:08,616 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 08:22:08,616 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 08:22:08,617 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 08:22:08,617 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 08:22:08,617 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 08:22:08,618 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 08:22:08,619 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 08:22:08,620 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 08:22:08,620 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 08:22:08,620 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 08:22:08,621 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 08:22:08,621 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 08:22:08,621 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 08:22:08,622 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 08:22:08,622 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 08:22:08,622 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 08:22:08,622 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 08:22:08,623 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 08:22:08,623 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 08:22:08,623 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 08:22:08,624 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 08:22:08,624 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 08:22:08,624 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 08:22:08,625 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 08:22:08,625 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 08:22:08,627 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_be860879-c0b6-4aa5-abca-35a4e50b8370/bin/uautomizer-AkOaLMaTGY/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be860879-c0b6-4aa5-abca-35a4e50b8370/bin/uautomizer-AkOaLMaTGY Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b84718ab53315b4fb0ea63ba4ff58d4e41800b214902f4639c5f6698ca2778b0 [2021-11-07 08:22:09,027 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 08:22:09,058 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 08:22:09,062 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 08:22:09,064 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 08:22:09,065 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 08:22:09,067 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be860879-c0b6-4aa5-abca-35a4e50b8370/bin/uautomizer-AkOaLMaTGY/../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--gadget--pch_udc.ko-entry_point.cil.out.i [2021-11-07 08:22:09,154 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be860879-c0b6-4aa5-abca-35a4e50b8370/bin/uautomizer-AkOaLMaTGY/data/93aee71ff/42888f747352449b912f178d09509531/FLAG214cebb68 [2021-11-07 08:22:10,214 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 08:22:10,215 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be860879-c0b6-4aa5-abca-35a4e50b8370/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--gadget--pch_udc.ko-entry_point.cil.out.i [2021-11-07 08:22:10,266 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be860879-c0b6-4aa5-abca-35a4e50b8370/bin/uautomizer-AkOaLMaTGY/data/93aee71ff/42888f747352449b912f178d09509531/FLAG214cebb68 [2021-11-07 08:22:10,600 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be860879-c0b6-4aa5-abca-35a4e50b8370/bin/uautomizer-AkOaLMaTGY/data/93aee71ff/42888f747352449b912f178d09509531 [2021-11-07 08:22:10,603 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 08:22:10,606 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 08:22:10,608 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 08:22:10,608 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 08:22:10,613 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 08:22:10,614 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:22:10" (1/1) ... [2021-11-07 08:22:10,616 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@380dc911 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:22:10, skipping insertion in model container [2021-11-07 08:22:10,616 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:22:10" (1/1) ... [2021-11-07 08:22:10,626 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 08:22:10,767 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 08:22:11,342 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [1724] [2021-11-07 08:22:11,345 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [1725-1726] [2021-11-07 08:22:11,643 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_be860879-c0b6-4aa5-abca-35a4e50b8370/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--gadget--pch_udc.ko-entry_point.cil.out.i[57371,57384] [2021-11-07 08:22:12,876 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 08:22:12,909 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 08:22:12,985 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [1724] [2021-11-07 08:22:12,986 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [1725-1726] [2021-11-07 08:22:13,015 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_be860879-c0b6-4aa5-abca-35a4e50b8370/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--gadget--pch_udc.ko-entry_point.cil.out.i[57371,57384] [2021-11-07 08:22:13,483 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 08:22:13,668 INFO L208 MainTranslator]: Completed translation [2021-11-07 08:22:13,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:22:13 WrapperNode [2021-11-07 08:22:13,669 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 08:22:13,671 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 08:22:13,671 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 08:22:13,671 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 08:22:13,680 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:22:13" (1/1) ... [2021-11-07 08:22:13,801 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:22:13" (1/1) ... [2021-11-07 08:22:18,760 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 08:22:18,761 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 08:22:18,761 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 08:22:18,761 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 08:22:18,772 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:22:13" (1/1) ... [2021-11-07 08:22:18,773 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:22:13" (1/1) ... [2021-11-07 08:22:20,017 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:22:13" (1/1) ... [2021-11-07 08:22:20,028 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:22:13" (1/1) ... [2021-11-07 08:22:22,761 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:22:13" (1/1) ... [2021-11-07 08:22:23,154 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:22:13" (1/1) ... [2021-11-07 08:22:23,297 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:22:13" (1/1) ... [2021-11-07 08:22:23,947 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 08:22:23,960 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 08:22:23,961 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 08:22:23,961 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 08:22:23,964 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:22:13" (1/1) ... [2021-11-07 08:22:23,973 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 08:22:23,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be860879-c0b6-4aa5-abca-35a4e50b8370/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:22:24,003 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be860879-c0b6-4aa5-abca-35a4e50b8370/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 08:22:24,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be860879-c0b6-4aa5-abca-35a4e50b8370/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 08:22:24,072 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 08:22:24,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 08:22:24,073 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 08:22:24,073 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 08:22:24,073 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 08:22:24,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 08:22:24,073 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-07 08:22:24,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-07 08:22:24,074 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 08:22:24,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 08:22:24,074 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 08:22:24,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 08:22:24,075 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-07 08:22:24,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-07 08:22:24,075 INFO L130 BoogieDeclarations]: Found specification of procedure pch_vbus_gpio_work_fall [2021-11-07 08:22:24,075 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_vbus_gpio_work_fall [2021-11-07 08:22:24,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 08:22:24,076 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 08:22:24,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 08:23:52,381 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 08:23:52,381 INFO L299 CfgBuilder]: Removed 25657 assume(true) statements. [2021-11-07 08:23:52,401 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:23:52 BoogieIcfgContainer [2021-11-07 08:23:52,401 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 08:23:52,404 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 08:23:52,404 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 08:23:52,409 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 08:23:52,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:22:10" (1/3) ... [2021-11-07 08:23:52,410 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79d1e39e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:23:52, skipping insertion in model container [2021-11-07 08:23:52,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:22:13" (2/3) ... [2021-11-07 08:23:52,411 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79d1e39e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:23:52, skipping insertion in model container [2021-11-07 08:23:52,411 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:23:52" (3/3) ... [2021-11-07 08:23:52,414 INFO L111 eAbstractionObserver]: Analyzing ICFG 43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--gadget--pch_udc.ko-entry_point.cil.out.i [2021-11-07 08:23:52,420 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 08:23:52,421 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 56 error locations. [2021-11-07 08:23:52,558 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 08:23:52,566 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 [2021-11-07 08:23:52,566 INFO L340 AbstractCegarLoop]: Starting to check reachability of 56 error locations. [2021-11-07 08:23:52,857 INFO L276 IsEmpty]: Start isEmpty. Operand has 16354 states, 16279 states have (on average 1.3000798574851036) internal successors, (21164), 16336 states have internal predecessors, (21164), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-07 08:23:52,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-07 08:23:52,867 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:23:52,868 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] [2021-11-07 08:23:52,869 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 53 more)] === [2021-11-07 08:23:52,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:23:52,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1183988152, now seen corresponding path program 1 times [2021-11-07 08:23:52,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:23:52,889 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385559263] [2021-11-07 08:23:52,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:23:52,891 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:23:53,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:23:54,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:23:54,043 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:23:54,045 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385559263] [2021-11-07 08:23:54,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385559263] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:23:54,047 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:23:54,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:23:54,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963306053] [2021-11-07 08:23:54,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:23:54,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:23:54,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:23:54,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:23:54,135 INFO L87 Difference]: Start difference. First operand has 16354 states, 16279 states have (on average 1.3000798574851036) internal successors, (21164), 16336 states have internal predecessors, (21164), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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) [2021-11-07 08:23:55,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:23:55,981 INFO L93 Difference]: Finished difference Result 48047 states and 62272 transitions. [2021-11-07 08:23:55,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:23:55,984 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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 23 [2021-11-07 08:23:55,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:23:56,262 INFO L225 Difference]: With dead ends: 48047 [2021-11-07 08:23:56,262 INFO L226 Difference]: Without dead ends: 31308 [2021-11-07 08:23:56,324 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 [2021-11-07 08:23:56,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31308 states. [2021-11-07 08:23:57,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31308 to 31193. [2021-11-07 08:23:57,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31193 states, 31101 states have (on average 1.2749429278801325) internal successors, (39652), 31158 states have internal predecessors, (39652), 32 states have call successors, (32), 4 states have call predecessors, (32), 4 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2021-11-07 08:23:58,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31193 states to 31193 states and 39716 transitions. [2021-11-07 08:23:58,015 INFO L78 Accepts]: Start accepts. Automaton has 31193 states and 39716 transitions. Word has length 23 [2021-11-07 08:23:58,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:23:58,016 INFO L470 AbstractCegarLoop]: Abstraction has 31193 states and 39716 transitions. [2021-11-07 08:23:58,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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) [2021-11-07 08:23:58,017 INFO L276 IsEmpty]: Start isEmpty. Operand 31193 states and 39716 transitions. [2021-11-07 08:23:58,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-07 08:23:58,020 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:23:58,020 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] [2021-11-07 08:23:58,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 08:23:58,021 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 53 more)] === [2021-11-07 08:23:58,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:23:58,022 INFO L85 PathProgramCache]: Analyzing trace with hash 696380445, now seen corresponding path program 1 times [2021-11-07 08:23:58,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:23:58,023 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934972432] [2021-11-07 08:23:58,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:23:58,023 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:23:58,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:23:58,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:23:58,294 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:23:58,294 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934972432] [2021-11-07 08:23:58,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934972432] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:23:58,295 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:23:58,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:23:58,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025930341] [2021-11-07 08:23:58,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:23:58,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:23:58,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:23:58,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:23:58,298 INFO L87 Difference]: Start difference. First operand 31193 states and 39716 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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) [2021-11-07 08:24:00,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:24:00,853 INFO L93 Difference]: Finished difference Result 91959 states and 117028 transitions. [2021-11-07 08:24:00,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:24:00,854 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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 23 [2021-11-07 08:24:00,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:24:01,170 INFO L225 Difference]: With dead ends: 91959 [2021-11-07 08:24:01,170 INFO L226 Difference]: Without dead ends: 60785 [2021-11-07 08:24:01,259 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 [2021-11-07 08:24:01,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60785 states. [2021-11-07 08:24:03,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60785 to 60664. [2021-11-07 08:24:03,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60664 states, 60536 states have (on average 1.274183956653892) internal successors, (77134), 60595 states have internal predecessors, (77134), 64 states have call successors, (64), 8 states have call predecessors, (64), 8 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2021-11-07 08:24:04,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60664 states to 60664 states and 77262 transitions. [2021-11-07 08:24:04,011 INFO L78 Accepts]: Start accepts. Automaton has 60664 states and 77262 transitions. Word has length 23 [2021-11-07 08:24:04,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:24:04,013 INFO L470 AbstractCegarLoop]: Abstraction has 60664 states and 77262 transitions. [2021-11-07 08:24:04,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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) [2021-11-07 08:24:04,017 INFO L276 IsEmpty]: Start isEmpty. Operand 60664 states and 77262 transitions. [2021-11-07 08:24:04,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-07 08:24:04,033 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:24:04,033 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:24:04,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 08:24:04,036 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 53 more)] === [2021-11-07 08:24:04,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:24:04,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1619446590, now seen corresponding path program 1 times [2021-11-07 08:24:04,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:24:04,044 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192195139] [2021-11-07 08:24:04,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:24:04,045 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:24:04,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:24:04,424 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 08:24:04,424 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:24:04,424 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192195139] [2021-11-07 08:24:04,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192195139] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:24:04,425 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:24:04,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 08:24:04,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987083566] [2021-11-07 08:24:04,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:24:04,427 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:24:04,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:24:04,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:24:04,429 INFO L87 Difference]: Start difference. First operand 60664 states and 77262 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 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) [2021-11-07 08:24:06,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:24:06,644 INFO L93 Difference]: Finished difference Result 63939 states and 81512 transitions. [2021-11-07 08:24:06,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:24:06,645 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 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 47 [2021-11-07 08:24:06,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:24:07,170 INFO L225 Difference]: With dead ends: 63939 [2021-11-07 08:24:07,171 INFO L226 Difference]: Without dead ends: 63831 [2021-11-07 08:24:07,187 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 [2021-11-07 08:24:07,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63831 states. [2021-11-07 08:24:09,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63831 to 63831. [2021-11-07 08:24:09,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63831 states, 63751 states have (on average 1.2725447443961664) internal successors, (81126), 63762 states have internal predecessors, (81126), 64 states have call successors, (64), 8 states have call predecessors, (64), 8 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2021-11-07 08:24:09,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63831 states to 63831 states and 81254 transitions. [2021-11-07 08:24:09,973 INFO L78 Accepts]: Start accepts. Automaton has 63831 states and 81254 transitions. Word has length 47 [2021-11-07 08:24:09,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:24:09,974 INFO L470 AbstractCegarLoop]: Abstraction has 63831 states and 81254 transitions. [2021-11-07 08:24:09,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 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) [2021-11-07 08:24:09,975 INFO L276 IsEmpty]: Start isEmpty. Operand 63831 states and 81254 transitions. [2021-11-07 08:24:10,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-07 08:24:10,000 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:24:10,001 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:24:10,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 08:24:10,002 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 53 more)] === [2021-11-07 08:24:10,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:24:10,003 INFO L85 PathProgramCache]: Analyzing trace with hash 227871648, now seen corresponding path program 1 times [2021-11-07 08:24:10,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:24:10,004 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292923653] [2021-11-07 08:24:10,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:24:10,004 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:24:10,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:24:10,317 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 08:24:10,317 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:24:10,318 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292923653] [2021-11-07 08:24:10,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292923653] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:24:10,318 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:24:10,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:24:10,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231089868] [2021-11-07 08:24:10,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:24:10,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:24:10,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:24:10,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:24:10,321 INFO L87 Difference]: Start difference. First operand 63831 states and 81254 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2021-11-07 08:24:12,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:24:12,534 INFO L93 Difference]: Finished difference Result 127647 states and 162492 transitions. [2021-11-07 08:24:12,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:24:12,535 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 [2021-11-07 08:24:12,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:24:12,792 INFO L225 Difference]: With dead ends: 127647 [2021-11-07 08:24:12,792 INFO L226 Difference]: Without dead ends: 63835 [2021-11-07 08:24:12,907 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 [2021-11-07 08:24:13,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63835 states. [2021-11-07 08:24:15,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63835 to 63835. [2021-11-07 08:24:15,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63835 states, 63755 states have (on average 1.2725276448905969) internal successors, (81130), 63766 states have internal predecessors, (81130), 64 states have call successors, (64), 8 states have call predecessors, (64), 8 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2021-11-07 08:24:15,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63835 states to 63835 states and 81258 transitions. [2021-11-07 08:24:15,638 INFO L78 Accepts]: Start accepts. Automaton has 63835 states and 81258 transitions. Word has length 59 [2021-11-07 08:24:15,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:24:15,640 INFO L470 AbstractCegarLoop]: Abstraction has 63835 states and 81258 transitions. [2021-11-07 08:24:15,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2021-11-07 08:24:15,640 INFO L276 IsEmpty]: Start isEmpty. Operand 63835 states and 81258 transitions. [2021-11-07 08:24:15,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-07 08:24:15,667 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:24:15,667 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:24:15,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 08:24:15,668 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 53 more)] === [2021-11-07 08:24:15,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:24:15,669 INFO L85 PathProgramCache]: Analyzing trace with hash -783245602, now seen corresponding path program 1 times [2021-11-07 08:24:15,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:24:15,670 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394042643] [2021-11-07 08:24:15,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:24:15,670 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:24:15,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:24:15,983 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 08:24:15,983 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:24:15,984 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394042643] [2021-11-07 08:24:15,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394042643] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:24:15,984 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:24:15,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:24:15,985 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47226009] [2021-11-07 08:24:15,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:24:15,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:24:15,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:24:15,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:24:15,988 INFO L87 Difference]: Start difference. First operand 63835 states and 81258 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2021-11-07 08:24:18,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:24:18,554 INFO L93 Difference]: Finished difference Result 127655 states and 162500 transitions. [2021-11-07 08:24:18,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:24:18,555 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 [2021-11-07 08:24:18,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:24:18,804 INFO L225 Difference]: With dead ends: 127655 [2021-11-07 08:24:18,804 INFO L226 Difference]: Without dead ends: 63839 [2021-11-07 08:24:18,925 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 [2021-11-07 08:24:19,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63839 states. [2021-11-07 08:24:21,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63839 to 63839. [2021-11-07 08:24:21,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63839 states, 63759 states have (on average 1.2725105475305447) internal successors, (81134), 63770 states have internal predecessors, (81134), 64 states have call successors, (64), 8 states have call predecessors, (64), 8 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2021-11-07 08:24:21,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63839 states to 63839 states and 81262 transitions. [2021-11-07 08:24:21,633 INFO L78 Accepts]: Start accepts. Automaton has 63839 states and 81262 transitions. Word has length 59 [2021-11-07 08:24:21,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:24:21,633 INFO L470 AbstractCegarLoop]: Abstraction has 63839 states and 81262 transitions. [2021-11-07 08:24:21,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2021-11-07 08:24:21,634 INFO L276 IsEmpty]: Start isEmpty. Operand 63839 states and 81262 transitions. [2021-11-07 08:24:21,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-07 08:24:21,658 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:24:21,660 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:24:21,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 08:24:21,668 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 53 more)] === [2021-11-07 08:24:21,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:24:21,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1592592228, now seen corresponding path program 1 times [2021-11-07 08:24:21,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:24:21,671 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080217966] [2021-11-07 08:24:21,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:24:21,671 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:24:21,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:24:21,987 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 08:24:21,988 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:24:21,988 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080217966] [2021-11-07 08:24:21,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080217966] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:24:21,989 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:24:21,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:24:21,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330168785] [2021-11-07 08:24:21,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:24:21,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:24:21,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:24:21,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:24:21,992 INFO L87 Difference]: Start difference. First operand 63839 states and 81262 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2021-11-07 08:24:24,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:24:24,494 INFO L93 Difference]: Finished difference Result 127661 states and 162504 transitions. [2021-11-07 08:24:24,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:24:24,494 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 [2021-11-07 08:24:24,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:24:24,683 INFO L225 Difference]: With dead ends: 127661 [2021-11-07 08:24:24,683 INFO L226 Difference]: Without dead ends: 63841 [2021-11-07 08:24:24,784 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 [2021-11-07 08:24:24,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63841 states. [2021-11-07 08:24:26,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63841 to 63841. [2021-11-07 08:24:26,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63841 states, 63761 states have (on average 1.2725019996549616) internal successors, (81136), 63772 states have internal predecessors, (81136), 64 states have call successors, (64), 8 states have call predecessors, (64), 8 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2021-11-07 08:24:27,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63841 states to 63841 states and 81264 transitions. [2021-11-07 08:24:27,156 INFO L78 Accepts]: Start accepts. Automaton has 63841 states and 81264 transitions. Word has length 59 [2021-11-07 08:24:27,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:24:27,157 INFO L470 AbstractCegarLoop]: Abstraction has 63841 states and 81264 transitions. [2021-11-07 08:24:27,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2021-11-07 08:24:27,160 INFO L276 IsEmpty]: Start isEmpty. Operand 63841 states and 81264 transitions. [2021-11-07 08:24:27,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-07 08:24:27,193 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:24:27,193 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:24:27,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 08:24:27,194 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 53 more)] === [2021-11-07 08:24:27,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:24:27,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1243341673, now seen corresponding path program 1 times [2021-11-07 08:24:27,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:24:27,200 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866248451] [2021-11-07 08:24:27,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:24:27,201 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:24:27,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:24:28,081 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 08:24:28,081 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:24:28,082 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866248451] [2021-11-07 08:24:28,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866248451] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:24:28,082 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:24:28,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 08:24:28,083 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357276646] [2021-11-07 08:24:28,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:24:28,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:24:28,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:24:28,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:24:28,085 INFO L87 Difference]: Start difference. First operand 63841 states and 81264 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 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) [2021-11-07 08:24:30,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:24:30,809 INFO L93 Difference]: Finished difference Result 127675 states and 162520 transitions. [2021-11-07 08:24:30,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 08:24:30,809 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 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 61 [2021-11-07 08:24:30,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:24:30,956 INFO L225 Difference]: With dead ends: 127675 [2021-11-07 08:24:30,956 INFO L226 Difference]: Without dead ends: 63853 [2021-11-07 08:24:31,046 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:24:31,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63853 states. [2021-11-07 08:24:32,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63853 to 63849. [2021-11-07 08:24:32,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63849 states, 63769 states have (on average 1.2724678135144036) internal successors, (81144), 63780 states have internal predecessors, (81144), 64 states have call successors, (64), 8 states have call predecessors, (64), 8 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2021-11-07 08:24:32,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63849 states to 63849 states and 81272 transitions. [2021-11-07 08:24:32,766 INFO L78 Accepts]: Start accepts. Automaton has 63849 states and 81272 transitions. Word has length 61 [2021-11-07 08:24:32,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:24:32,767 INFO L470 AbstractCegarLoop]: Abstraction has 63849 states and 81272 transitions. [2021-11-07 08:24:32,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 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) [2021-11-07 08:24:32,767 INFO L276 IsEmpty]: Start isEmpty. Operand 63849 states and 81272 transitions. [2021-11-07 08:24:32,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-07 08:24:32,792 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:24:32,792 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:24:32,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-07 08:24:32,793 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 53 more)] === [2021-11-07 08:24:32,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:24:32,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1057480917, now seen corresponding path program 1 times [2021-11-07 08:24:32,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:24:32,794 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157695744] [2021-11-07 08:24:32,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:24:32,795 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:24:33,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:24:34,027 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:24:34,028 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:24:34,028 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157695744] [2021-11-07 08:24:34,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157695744] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:24:34,028 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:24:34,029 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 08:24:34,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174318710] [2021-11-07 08:24:34,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 08:24:34,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:24:34,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 08:24:34,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:24:34,032 INFO L87 Difference]: Start difference. First operand 63849 states and 81272 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 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) [2021-11-07 08:24:40,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:24:40,005 INFO L93 Difference]: Finished difference Result 205450 states and 261460 transitions. [2021-11-07 08:24:40,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 08:24:40,006 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 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 [2021-11-07 08:24:40,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:24:40,725 INFO L225 Difference]: With dead ends: 205450 [2021-11-07 08:24:40,725 INFO L226 Difference]: Without dead ends: 141620 [2021-11-07 08:24:40,820 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 08:24:40,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141620 states.