./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-43_2a-drivers--scsi--ips.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_758021c0-b2ec-4041-8b59-0b9718c583b3/bin/uautomizer-AkOaLMaTGY/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758021c0-b2ec-4041-8b59-0b9718c583b3/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_758021c0-b2ec-4041-8b59-0b9718c583b3/bin/uautomizer-AkOaLMaTGY/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758021c0-b2ec-4041-8b59-0b9718c583b3/bin/uautomizer-AkOaLMaTGY/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--ips.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758021c0-b2ec-4041-8b59-0b9718c583b3/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_758021c0-b2ec-4041-8b59-0b9718c583b3/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 4a4f053d4c8e05b05b5c7887f5d3a3e872b1a59439c17cfd3f803da6611a851a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 07:36:39,491 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 07:36:39,496 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 07:36:39,557 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 07:36:39,557 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 07:36:39,559 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 07:36:39,561 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 07:36:39,564 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 07:36:39,569 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 07:36:39,570 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 07:36:39,572 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 07:36:39,574 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 07:36:39,574 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 07:36:39,576 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 07:36:39,578 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 07:36:39,581 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 07:36:39,582 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 07:36:39,593 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 07:36:39,600 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 07:36:39,608 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 07:36:39,610 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 07:36:39,616 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 07:36:39,618 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 07:36:39,619 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 07:36:39,623 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 07:36:39,624 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 07:36:39,625 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 07:36:39,626 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 07:36:39,636 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 07:36:39,638 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 07:36:39,639 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 07:36:39,640 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 07:36:39,642 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 07:36:39,643 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 07:36:39,646 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 07:36:39,646 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 07:36:39,647 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 07:36:39,647 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 07:36:39,647 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 07:36:39,652 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 07:36:39,653 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 07:36:39,655 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758021c0-b2ec-4041-8b59-0b9718c583b3/bin/uautomizer-AkOaLMaTGY/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 07:36:39,691 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 07:36:39,692 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 07:36:39,692 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 07:36:39,692 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 07:36:39,694 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 07:36:39,694 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 07:36:39,694 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 07:36:39,695 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 07:36:39,695 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 07:36:39,695 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 07:36:39,695 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 07:36:39,696 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 07:36:39,696 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 07:36:39,696 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 07:36:39,696 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 07:36:39,697 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 07:36:39,697 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 07:36:39,697 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 07:36:39,698 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 07:36:39,698 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 07:36:39,698 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 07:36:39,698 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 07:36:39,699 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 07:36:39,699 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 07:36:39,699 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 07:36:39,699 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 07:36:39,700 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 07:36:39,700 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 07:36:39,700 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 07:36:39,701 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_758021c0-b2ec-4041-8b59-0b9718c583b3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758021c0-b2ec-4041-8b59-0b9718c583b3/bin/uautomizer-AkOaLMaTGY Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4a4f053d4c8e05b05b5c7887f5d3a3e872b1a59439c17cfd3f803da6611a851a [2021-11-07 07:36:39,998 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 07:36:40,027 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 07:36:40,030 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 07:36:40,031 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 07:36:40,032 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 07:36:40,033 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758021c0-b2ec-4041-8b59-0b9718c583b3/bin/uautomizer-AkOaLMaTGY/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--ips.ko-entry_point.cil.out.i [2021-11-07 07:36:40,147 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758021c0-b2ec-4041-8b59-0b9718c583b3/bin/uautomizer-AkOaLMaTGY/data/6f9b80c3f/786fcce368c1463e9b4ec4c963f309d6/FLAGa0578db2d [2021-11-07 07:36:41,319 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 07:36:41,321 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758021c0-b2ec-4041-8b59-0b9718c583b3/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--ips.ko-entry_point.cil.out.i [2021-11-07 07:36:41,380 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758021c0-b2ec-4041-8b59-0b9718c583b3/bin/uautomizer-AkOaLMaTGY/data/6f9b80c3f/786fcce368c1463e9b4ec4c963f309d6/FLAGa0578db2d [2021-11-07 07:36:41,550 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758021c0-b2ec-4041-8b59-0b9718c583b3/bin/uautomizer-AkOaLMaTGY/data/6f9b80c3f/786fcce368c1463e9b4ec4c963f309d6 [2021-11-07 07:36:41,552 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 07:36:41,554 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 07:36:41,557 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 07:36:41,557 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 07:36:41,561 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 07:36:41,562 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:36:41" (1/1) ... [2021-11-07 07:36:41,563 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60f3c4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:36:41, skipping insertion in model container [2021-11-07 07:36:41,564 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:36:41" (1/1) ... [2021-11-07 07:36:41,572 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 07:36:41,761 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 07:36:45,709 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_758021c0-b2ec-4041-8b59-0b9718c583b3/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--ips.ko-entry_point.cil.out.i[368085,368098] [2021-11-07 07:36:45,789 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 07:36:45,955 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 07:36:47,016 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_758021c0-b2ec-4041-8b59-0b9718c583b3/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--ips.ko-entry_point.cil.out.i[368085,368098] [2021-11-07 07:36:47,023 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 07:36:47,169 INFO L208 MainTranslator]: Completed translation [2021-11-07 07:36:47,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:36:47 WrapperNode [2021-11-07 07:36:47,170 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 07:36:47,172 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 07:36:47,172 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 07:36:47,172 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 07:36:47,180 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:36:47" (1/1) ... [2021-11-07 07:36:47,356 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:36:47" (1/1) ... [2021-11-07 07:36:48,925 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 07:36:48,936 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 07:36:48,945 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 07:36:48,945 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 07:36:48,966 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:36:47" (1/1) ... [2021-11-07 07:36:48,967 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:36:47" (1/1) ... [2021-11-07 07:36:49,665 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:36:47" (1/1) ... [2021-11-07 07:36:49,666 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:36:47" (1/1) ... [2021-11-07 07:36:50,957 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:36:47" (1/1) ... [2021-11-07 07:36:51,239 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:36:47" (1/1) ... [2021-11-07 07:36:51,313 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:36:47" (1/1) ... [2021-11-07 07:36:51,524 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 07:36:51,525 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 07:36:51,526 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 07:36:51,526 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 07:36:51,528 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:36:47" (1/1) ... [2021-11-07 07:36:51,538 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 07:36:51,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758021c0-b2ec-4041-8b59-0b9718c583b3/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:36:51,571 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758021c0-b2ec-4041-8b59-0b9718c583b3/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 07:36:51,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758021c0-b2ec-4041-8b59-0b9718c583b3/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 07:36:51,631 INFO L130 BoogieDeclarations]: Found specification of procedure ips_done [2021-11-07 07:36:51,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_done [2021-11-07 07:36:51,632 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 07:36:51,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 07:36:51,633 INFO L130 BoogieDeclarations]: Found specification of procedure ips_send_cmd [2021-11-07 07:36:51,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_send_cmd [2021-11-07 07:36:51,634 INFO L130 BoogieDeclarations]: Found specification of procedure ips_intr_copperhead [2021-11-07 07:36:51,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_intr_copperhead [2021-11-07 07:36:51,634 INFO L130 BoogieDeclarations]: Found specification of procedure ips_hainit [2021-11-07 07:36:51,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_hainit [2021-11-07 07:36:51,635 INFO L130 BoogieDeclarations]: Found specification of procedure ips_wait [2021-11-07 07:36:51,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_wait [2021-11-07 07:36:51,635 INFO L130 BoogieDeclarations]: Found specification of procedure ips_readwrite_page5 [2021-11-07 07:36:51,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_readwrite_page5 [2021-11-07 07:36:51,635 INFO L130 BoogieDeclarations]: Found specification of procedure ips_flush_and_reset [2021-11-07 07:36:51,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_flush_and_reset [2021-11-07 07:36:51,636 INFO L130 BoogieDeclarations]: Found specification of procedure ips_send_wait [2021-11-07 07:36:51,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_send_wait [2021-11-07 07:36:51,636 INFO L130 BoogieDeclarations]: Found specification of procedure ips_intr_morpheus [2021-11-07 07:36:51,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_intr_morpheus [2021-11-07 07:36:51,637 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 07:36:51,637 INFO L130 BoogieDeclarations]: Found specification of procedure ips_queue_lck [2021-11-07 07:36:51,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_queue_lck [2021-11-07 07:36:51,637 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 07:36:51,637 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 07:36:51,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 07:36:51,638 INFO L130 BoogieDeclarations]: Found specification of procedure ips_release [2021-11-07 07:36:51,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_release [2021-11-07 07:36:51,638 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-11-07 07:36:51,638 INFO L130 BoogieDeclarations]: Found specification of procedure ips_isinit_morpheus [2021-11-07 07:36:51,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_isinit_morpheus [2021-11-07 07:36:51,639 INFO L130 BoogieDeclarations]: Found specification of procedure ips_next [2021-11-07 07:36:51,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_next [2021-11-07 07:36:51,639 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-07 07:36:51,639 INFO L130 BoogieDeclarations]: Found specification of procedure ips_clear_adapter [2021-11-07 07:36:51,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_clear_adapter [2021-11-07 07:36:51,640 INFO L130 BoogieDeclarations]: Found specification of procedure ips_flash_bios [2021-11-07 07:36:51,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_flash_bios [2021-11-07 07:36:51,640 INFO L130 BoogieDeclarations]: Found specification of procedure ips_read_subsystem_parameters [2021-11-07 07:36:51,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_read_subsystem_parameters [2021-11-07 07:36:51,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-07 07:36:51,641 INFO L130 BoogieDeclarations]: Found specification of procedure ips_write_driver_status [2021-11-07 07:36:51,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_write_driver_status [2021-11-07 07:36:51,641 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 07:36:51,642 INFO L130 BoogieDeclarations]: Found specification of procedure ips_init_phase2 [2021-11-07 07:36:51,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_init_phase2 [2021-11-07 07:36:51,642 INFO L130 BoogieDeclarations]: Found specification of procedure ips_read_adapter_status [2021-11-07 07:36:51,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_read_adapter_status [2021-11-07 07:36:51,643 INFO L130 BoogieDeclarations]: Found specification of procedure ips_init_phase1 [2021-11-07 07:36:51,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_init_phase1 [2021-11-07 07:36:51,643 INFO L130 BoogieDeclarations]: Found specification of procedure ipsintr_done [2021-11-07 07:36:51,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ipsintr_done [2021-11-07 07:36:51,644 INFO L130 BoogieDeclarations]: Found specification of procedure ips_insert_device [2021-11-07 07:36:51,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_insert_device [2021-11-07 07:36:51,644 INFO L130 BoogieDeclarations]: Found specification of procedure ips_read_config [2021-11-07 07:36:51,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_read_config [2021-11-07 07:36:51,644 INFO L130 BoogieDeclarations]: Found specification of procedure ips_ffdc_reset [2021-11-07 07:36:51,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_ffdc_reset [2021-11-07 07:36:51,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 07:36:51,646 INFO L130 BoogieDeclarations]: Found specification of procedure ips_make_passthru [2021-11-07 07:36:51,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_make_passthru [2021-11-07 07:36:51,648 INFO L130 BoogieDeclarations]: Found specification of procedure ips_reset_copperhead_memio [2021-11-07 07:36:51,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_reset_copperhead_memio [2021-11-07 07:36:51,648 INFO L130 BoogieDeclarations]: Found specification of procedure ips_eh_reset [2021-11-07 07:36:51,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_eh_reset [2021-11-07 07:36:51,649 INFO L130 BoogieDeclarations]: Found specification of procedure __ips_eh_reset [2021-11-07 07:36:51,649 INFO L138 BoogieDeclarations]: Found implementation of procedure __ips_eh_reset [2021-11-07 07:36:51,649 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 07:36:51,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 07:36:51,650 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-07 07:36:51,650 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-07 07:36:51,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-07 07:36:51,651 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-07 07:36:51,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-07 07:36:51,652 INFO L130 BoogieDeclarations]: Found specification of procedure ips_remove_device [2021-11-07 07:36:51,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_remove_device [2021-11-07 07:36:51,653 INFO L130 BoogieDeclarations]: Found specification of procedure ips_queue [2021-11-07 07:36:51,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_queue [2021-11-07 07:36:51,653 INFO L130 BoogieDeclarations]: Found specification of procedure ips_reset_morpheus [2021-11-07 07:36:51,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_reset_morpheus [2021-11-07 07:36:51,654 INFO L130 BoogieDeclarations]: Found specification of procedure ips_ffdc_time [2021-11-07 07:36:51,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_ffdc_time [2021-11-07 07:36:51,654 INFO L130 BoogieDeclarations]: Found specification of procedure ips_get_bios_version [2021-11-07 07:36:51,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_get_bios_version [2021-11-07 07:36:51,655 INFO L130 BoogieDeclarations]: Found specification of procedure ips_reset_copperhead [2021-11-07 07:36:51,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_reset_copperhead [2021-11-07 07:36:51,655 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-07 07:36:51,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-07 07:36:51,656 INFO L130 BoogieDeclarations]: Found specification of procedure ips_flash_copperhead [2021-11-07 07:36:51,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ips_flash_copperhead [2021-11-07 07:36:51,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 07:36:51,657 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-11-07 07:36:51,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-11-07 07:36:51,658 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-07 07:36:51,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 07:36:51,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 07:46:33,131 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 07:46:33,131 INFO L299 CfgBuilder]: Removed 6298 assume(true) statements. [2021-11-07 07:46:33,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:46:33 BoogieIcfgContainer [2021-11-07 07:46:33,142 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 07:46:33,144 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 07:46:33,144 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 07:46:33,147 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 07:46:33,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 07:36:41" (1/3) ... [2021-11-07 07:46:33,150 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70a33eec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:46:33, skipping insertion in model container [2021-11-07 07:46:33,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:36:47" (2/3) ... [2021-11-07 07:46:33,150 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70a33eec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:46:33, skipping insertion in model container [2021-11-07 07:46:33,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:46:33" (3/3) ... [2021-11-07 07:46:33,152 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--ips.ko-entry_point.cil.out.i [2021-11-07 07:46:33,159 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 07:46:33,159 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-07 07:46:33,249 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 07:46:33,256 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 07:46:33,256 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-07 07:46:33,480 INFO L276 IsEmpty]: Start isEmpty. Operand has 8778 states, 8605 states have (on average 1.47472399767577) internal successors, (12690), 8616 states have internal predecessors, (12690), 128 states have call successors, (128), 39 states have call predecessors, (128), 39 states have return successors, (128), 128 states have call predecessors, (128), 128 states have call successors, (128) [2021-11-07 07:46:33,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-07 07:46:33,501 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:46:33,501 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, 1] [2021-11-07 07:46:33,502 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ips_init_phase1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ips_queue_lckErr0ASSERT_VIOLATIONERROR_FUNCTION, ips_init_phase1Err0ASSERT_VIOLATIONERROR_FUNCTION, ips_init_phase1Err1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 07:46:33,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:46:33,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1609733912, now seen corresponding path program 1 times [2021-11-07 07:46:33,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:46:33,523 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780480249] [2021-11-07 07:46:33,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:46:33,525 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:46:34,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:46:34,992 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 07:46:34,994 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:46:34,995 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780480249] [2021-11-07 07:46:34,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780480249] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:46:34,996 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:46:35,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 07:46:35,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267502108] [2021-11-07 07:46:35,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 07:46:35,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:46:35,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 07:46:35,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 07:46:35,053 INFO L87 Difference]: Start difference. First operand has 8778 states, 8605 states have (on average 1.47472399767577) internal successors, (12690), 8616 states have internal predecessors, (12690), 128 states have call successors, (128), 39 states have call predecessors, (128), 39 states have return successors, (128), 128 states have call predecessors, (128), 128 states have call successors, (128) Second operand has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:46:35,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:46:35,667 INFO L93 Difference]: Finished difference Result 17528 states and 25983 transitions. [2021-11-07 07:46:35,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 07:46:35,669 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-07 07:46:35,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:46:35,775 INFO L225 Difference]: With dead ends: 17528 [2021-11-07 07:46:35,775 INFO L226 Difference]: Without dead ends: 8466 [2021-11-07 07:46:35,902 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 [2021-11-07 07:46:35,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8466 states. [2021-11-07 07:46:36,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8466 to 8466. [2021-11-07 07:46:36,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8466 states, 8294 states have (on average 1.4475524475524475) internal successors, (12006), 8304 states have internal predecessors, (12006), 128 states have call successors, (128), 39 states have call predecessors, (128), 39 states have return successors, (128), 128 states have call predecessors, (128), 128 states have call successors, (128) [2021-11-07 07:46:36,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8466 states to 8466 states and 12262 transitions. [2021-11-07 07:46:36,418 INFO L78 Accepts]: Start accepts. Automaton has 8466 states and 12262 transitions. Word has length 64 [2021-11-07 07:46:36,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:46:36,418 INFO L470 AbstractCegarLoop]: Abstraction has 8466 states and 12262 transitions. [2021-11-07 07:46:36,419 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:46:36,420 INFO L276 IsEmpty]: Start isEmpty. Operand 8466 states and 12262 transitions. [2021-11-07 07:46:36,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-07 07:46:36,431 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:46:36,432 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, 1] [2021-11-07 07:46:36,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 07:46:36,433 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ips_init_phase1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ips_queue_lckErr0ASSERT_VIOLATIONERROR_FUNCTION, ips_init_phase1Err0ASSERT_VIOLATIONERROR_FUNCTION, ips_init_phase1Err1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 07:46:36,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:46:36,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1609001254, now seen corresponding path program 1 times [2021-11-07 07:46:36,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:46:36,437 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400648168] [2021-11-07 07:46:36,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:46:36,437 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:46:36,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:46:37,315 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 07:46:37,316 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:46:37,316 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400648168] [2021-11-07 07:46:37,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400648168] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:46:37,317 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:46:37,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 07:46:37,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581700961] [2021-11-07 07:46:37,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:46:37,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:46:37,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:46:37,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:46:37,322 INFO L87 Difference]: Start difference. First operand 8466 states and 12262 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, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:46:38,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:46:38,313 INFO L93 Difference]: Finished difference Result 25059 states and 36338 transitions. [2021-11-07 07:46:38,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:46:38,314 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, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-07 07:46:38,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:46:38,489 INFO L225 Difference]: With dead ends: 25059 [2021-11-07 07:46:38,489 INFO L226 Difference]: Without dead ends: 16637 [2021-11-07 07:46:38,550 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 07:46:38,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16637 states. [2021-11-07 07:46:39,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16637 to 16626. [2021-11-07 07:46:39,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16626 states, 16289 states have (on average 1.4493216280925778) internal successors, (23608), 16305 states have internal predecessors, (23608), 254 states have call successors, (254), 78 states have call predecessors, (254), 78 states have return successors, (254), 254 states have call predecessors, (254), 254 states have call successors, (254) [2021-11-07 07:46:39,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16626 states to 16626 states and 24116 transitions. [2021-11-07 07:46:39,211 INFO L78 Accepts]: Start accepts. Automaton has 16626 states and 24116 transitions. Word has length 64 [2021-11-07 07:46:39,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:46:39,212 INFO L470 AbstractCegarLoop]: Abstraction has 16626 states and 24116 transitions. [2021-11-07 07:46:39,212 INFO L471 AbstractCegarLoop]: INTERPOLANT 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, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:46:39,212 INFO L276 IsEmpty]: Start isEmpty. Operand 16626 states and 24116 transitions. [2021-11-07 07:46:39,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-07 07:46:39,233 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:46:39,233 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:46:39,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 07:46:39,234 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ips_queue_lckErr0ASSERT_VIOLATIONERROR_FUNCTION === [ips_queue_lckErr0ASSERT_VIOLATIONERROR_FUNCTION, ips_init_phase1Err0ASSERT_VIOLATIONERROR_FUNCTION, ips_init_phase1Err1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 07:46:39,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:46:39,235 INFO L85 PathProgramCache]: Analyzing trace with hash 81393114, now seen corresponding path program 1 times [2021-11-07 07:46:39,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:46:39,235 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746493188] [2021-11-07 07:46:39,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:46:39,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:46:39,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:46:39,998 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 07:46:39,999 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:46:39,999 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746493188] [2021-11-07 07:46:39,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746493188] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:46:40,000 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:46:40,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 07:46:40,000 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093393771] [2021-11-07 07:46:40,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:46:40,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:46:40,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:46:40,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:46:40,002 INFO L87 Difference]: Start difference. First operand 16626 states and 24116 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:46:41,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:46:41,471 INFO L93 Difference]: Finished difference Result 48632 states and 71092 transitions. [2021-11-07 07:46:41,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:46:41,472 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2021-11-07 07:46:41,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:46:41,703 INFO L225 Difference]: With dead ends: 48632 [2021-11-07 07:46:41,703 INFO L226 Difference]: Without dead ends: 32050 [2021-11-07 07:46:41,806 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 07:46:41,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32050 states. [2021-11-07 07:46:42,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32050 to 31989. [2021-11-07 07:46:42,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31989 states, 31343 states have (on average 1.4511693201033724) internal successors, (45484), 31366 states have internal predecessors, (45484), 485 states have call successors, (485), 152 states have call predecessors, (485), 156 states have return successors, (970), 494 states have call predecessors, (970), 485 states have call successors, (970) [2021-11-07 07:46:43,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31989 states to 31989 states and 46939 transitions. [2021-11-07 07:46:43,085 INFO L78 Accepts]: Start accepts. Automaton has 31989 states and 46939 transitions. Word has length 81 [2021-11-07 07:46:43,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:46:43,087 INFO L470 AbstractCegarLoop]: Abstraction has 31989 states and 46939 transitions. [2021-11-07 07:46:43,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:46:43,087 INFO L276 IsEmpty]: Start isEmpty. Operand 31989 states and 46939 transitions. [2021-11-07 07:46:43,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-07 07:46:43,106 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:46:43,106 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, 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 07:46:43,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 07:46:43,107 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ips_init_phase1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ips_queue_lckErr0ASSERT_VIOLATIONERROR_FUNCTION, ips_init_phase1Err0ASSERT_VIOLATIONERROR_FUNCTION, ips_init_phase1Err1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 07:46:43,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:46:43,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1365929328, now seen corresponding path program 1 times [2021-11-07 07:46:43,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:46:43,108 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847885402] [2021-11-07 07:46:43,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:46:43,109 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:46:43,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:46:43,823 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 07:46:43,827 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:46:43,827 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847885402] [2021-11-07 07:46:43,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847885402] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:46:43,828 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:46:43,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 07:46:43,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306046933] [2021-11-07 07:46:43,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 07:46:43,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:46:43,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 07:46:43,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:46:43,834 INFO L87 Difference]: Start difference. First operand 31989 states and 46939 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:46:47,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:46:47,736 INFO L93 Difference]: Finished difference Result 63940 states and 93839 transitions. [2021-11-07 07:46:47,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 07:46:47,737 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2021-11-07 07:46:47,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:46:47,923 INFO L225 Difference]: With dead ends: 63940 [2021-11-07 07:46:47,923 INFO L226 Difference]: Without dead ends: 31979 [2021-11-07 07:46:48,117 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 07:46:48,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31979 states. [2021-11-07 07:46:48,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31979 to 31979. [2021-11-07 07:46:48,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31979 states, 31333 states have (on average 1.4511218204448983) internal successors, (45468), 31356 states have internal predecessors, (45468), 485 states have call successors, (485), 152 states have call predecessors, (485), 156 states have return successors, (970), 494 states have call predecessors, (970), 485 states have call successors, (970) [2021-11-07 07:46:49,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31979 states to 31979 states and 46923 transitions. [2021-11-07 07:46:49,295 INFO L78 Accepts]: Start accepts. Automaton has 31979 states and 46923 transitions. Word has length 83 [2021-11-07 07:46:49,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:46:49,299 INFO L470 AbstractCegarLoop]: Abstraction has 31979 states and 46923 transitions. [2021-11-07 07:46:49,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:46:49,299 INFO L276 IsEmpty]: Start isEmpty. Operand 31979 states and 46923 transitions. [2021-11-07 07:46:49,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-07 07:46:49,323 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:46:49,323 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, 1, 1, 1, 1, 1, 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 07:46:49,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 07:46:49,324 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ips_init_phase1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ips_queue_lckErr0ASSERT_VIOLATIONERROR_FUNCTION, ips_init_phase1Err0ASSERT_VIOLATIONERROR_FUNCTION, ips_init_phase1Err1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 07:46:49,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:46:49,325 INFO L85 PathProgramCache]: Analyzing trace with hash 849014434, now seen corresponding path program 1 times [2021-11-07 07:46:49,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:46:49,326 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247689656] [2021-11-07 07:46:49,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:46:49,326 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:46:49,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:46:49,943 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 07:46:49,943 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:46:49,944 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247689656] [2021-11-07 07:46:49,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247689656] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:46:49,944 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:46:49,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 07:46:49,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377468714] [2021-11-07 07:46:49,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:46:49,945 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:46:49,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:46:49,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:46:49,947 INFO L87 Difference]: Start difference. First operand 31979 states and 46923 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 1 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:46:51,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:46:51,900 INFO L93 Difference]: Finished difference Result 95769 states and 140547 transitions. [2021-11-07 07:46:51,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:46:51,901 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 1 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2021-11-07 07:46:51,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:46:52,290 INFO L225 Difference]: With dead ends: 95769 [2021-11-07 07:46:52,290 INFO L226 Difference]: Without dead ends: 63834 [2021-11-07 07:46:52,518 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 07:46:52,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63834 states. [2021-11-07 07:46:55,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63834 to 63824. [2021-11-07 07:46:55,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63824 states, 62541 states have (on average 1.4512719655905726) internal successors, (90764), 62583 states have internal predecessors, (90764), 966 states have call successors, (966), 304 states have call predecessors, (966), 312 states have return successors, (1932), 984 states have call predecessors, (1932), 966 states have call successors, (1932) [2021-11-07 07:46:56,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63824 states to 63824 states and 93662 transitions. [2021-11-07 07:46:56,336 INFO L78 Accepts]: Start accepts. Automaton has 63824 states and 93662 transitions. Word has length 92 [2021-11-07 07:46:56,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:46:56,336 INFO L470 AbstractCegarLoop]: Abstraction has 63824 states and 93662 transitions. [2021-11-07 07:46:56,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 1 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:46:56,337 INFO L276 IsEmpty]: Start isEmpty. Operand 63824 states and 93662 transitions. [2021-11-07 07:46:56,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-07 07:46:56,367 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:46:56,367 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, 1, 1, 1, 1, 1, 1, 1, 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 07:46:56,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 07:46:56,368 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ips_init_phase1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ips_queue_lckErr0ASSERT_VIOLATIONERROR_FUNCTION, ips_init_phase1Err0ASSERT_VIOLATIONERROR_FUNCTION, ips_init_phase1Err1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 07:46:56,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:46:56,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1943028586, now seen corresponding path program 1 times [2021-11-07 07:46:56,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:46:56,371 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513472321] [2021-11-07 07:46:56,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:46:56,372 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:46:57,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:46:57,395 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 07:46:57,396 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:46:57,396 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513472321] [2021-11-07 07:46:57,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513472321] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:46:57,402 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:46:57,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 07:46:57,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839138833] [2021-11-07 07:46:57,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:46:57,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:46:57,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:46:57,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:46:57,405 INFO L87 Difference]: Start difference. First operand 63824 states and 93662 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:47:00,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:47:00,475 INFO L93 Difference]: Finished difference Result 132228 states and 195501 transitions. [2021-11-07 07:47:00,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:47:00,475 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2021-11-07 07:47:00,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:47:01,411 INFO L225 Difference]: With dead ends: 132228 [2021-11-07 07:47:01,411 INFO L226 Difference]: Without dead ends: 68448 [2021-11-07 07:47:02,038 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 07:47:02,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68448 states. [2021-11-07 07:47:03,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68448 to 63840. [2021-11-07 07:47:03,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63840 states, 62557 states have (on average 1.4511565452307496) internal successors, (90780), 62599 states have internal predecessors, (90780), 966 states have call successors, (966), 304 states have call predecessors, (966), 312 states have return successors, (1932), 984 states have call predecessors, (1932), 966 states have call successors, (1932) [2021-11-07 07:47:04,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63840 states to 63840 states and 93678 transitions. [2021-11-07 07:47:04,335 INFO L78 Accepts]: Start accepts. Automaton has 63840 states and 93678 transitions. Word has length 92 [2021-11-07 07:47:04,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:47:04,335 INFO L470 AbstractCegarLoop]: Abstraction has 63840 states and 93678 transitions. [2021-11-07 07:47:04,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:47:04,336 INFO L276 IsEmpty]: Start isEmpty. Operand 63840 states and 93678 transitions. [2021-11-07 07:47:04,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-07 07:47:04,372 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:47:04,372 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:47:04,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 07:47:04,373 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ips_init_phase1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ips_queue_lckErr0ASSERT_VIOLATIONERROR_FUNCTION, ips_init_phase1Err0ASSERT_VIOLATIONERROR_FUNCTION, ips_init_phase1Err1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 07:47:04,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:47:04,373 INFO L85 PathProgramCache]: Analyzing trace with hash 309060204, now seen corresponding path program 1 times [2021-11-07 07:47:04,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:47:04,374 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520484288] [2021-11-07 07:47:04,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:47:04,374 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:47:04,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:47:05,162 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 07:47:05,163 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:47:05,163 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520484288] [2021-11-07 07:47:05,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520484288] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:47:05,164 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:47:05,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 07:47:05,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613033164] [2021-11-07 07:47:05,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:47:05,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:47:05,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:47:05,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:47:05,169 INFO L87 Difference]: Start difference. First operand 63840 states and 93678 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 2 states have internal predecessors, (93), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:47:08,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:47:08,417 INFO L93 Difference]: Finished difference Result 123146 states and 182280 transitions. [2021-11-07 07:47:08,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:47:08,418 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 2 states have internal predecessors, (93), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-07 07:47:08,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:47:09,257 INFO L225 Difference]: With dead ends: 123146 [2021-11-07 07:47:09,257 INFO L226 Difference]: Without dead ends: 123138 [2021-11-07 07:47:09,314 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 07:47:09,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123138 states. [2021-11-07 07:47:12,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123138 to 122938. [2021-11-07 07:47:12,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122938 states, 120641 states have (on average 1.4508168864648006) internal successors, (175028), 120657 states have internal predecessors, (175028), 1692 states have call successors, (1692), 576 states have call predecessors, (1692), 600 states have return successors, (5252), 1800 states have call predecessors, (5252), 1692 states have call successors, (5252) [2021-11-07 07:47:13,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122938 states to 122938 states and 181972 transitions. [2021-11-07 07:47:13,952 INFO L78 Accepts]: Start accepts. Automaton has 122938 states and 181972 transitions. Word has length 96 [2021-11-07 07:47:13,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:47:13,953 INFO L470 AbstractCegarLoop]: Abstraction has 122938 states and 181972 transitions. [2021-11-07 07:47:13,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 2 states have internal predecessors, (93), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:47:13,954 INFO L276 IsEmpty]: Start isEmpty. Operand 122938 states and 181972 transitions. [2021-11-07 07:47:14,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-11-07 07:47:14,091 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:47:14,091 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:47:14,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-07 07:47:14,092 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ips_init_phase1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ips_queue_lckErr0ASSERT_VIOLATIONERROR_FUNCTION, ips_init_phase1Err0ASSERT_VIOLATIONERROR_FUNCTION, ips_init_phase1Err1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 07:47:14,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:47:14,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1830442181, now seen corresponding path program 1 times [2021-11-07 07:47:14,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:47:14,093 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287710236] [2021-11-07 07:47:14,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:47:14,094 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:47:14,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:47:15,170 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 07:47:15,171 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:47:15,172 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287710236] [2021-11-07 07:47:15,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287710236] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:47:15,174 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:47:15,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 07:47:15,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612337880] [2021-11-07 07:47:15,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 07:47:15,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:47:15,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 07:47:15,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:47:15,177 INFO L87 Difference]: Start difference. First operand 122938 states and 181972 transitions. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 3 states have internal predecessors, (119), 1 states have call successors, (7), 1 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:47:26,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:47:26,596 INFO L93 Difference]: Finished difference Result 383710 states and 591366 transitions. [2021-11-07 07:47:26,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 07:47:26,603 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 3 states have internal predecessors, (119), 1 states have call successors, (7), 1 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2021-11-07 07:47:26,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted.