./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-commit-tester/m0_drivers-usb-gadget-g_printer-ko--106_1a--2b9ec6c-1.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_1626b3d2-3a64-498b-ae8a-740874156efe/bin/uautomizer-AkOaLMaTGY/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1626b3d2-3a64-498b-ae8a-740874156efe/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_1626b3d2-3a64-498b-ae8a-740874156efe/bin/uautomizer-AkOaLMaTGY/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1626b3d2-3a64-498b-ae8a-740874156efe/bin/uautomizer-AkOaLMaTGY/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-commit-tester/m0_drivers-usb-gadget-g_printer-ko--106_1a--2b9ec6c-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1626b3d2-3a64-498b-ae8a-740874156efe/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_1626b3d2-3a64-498b-ae8a-740874156efe/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 cb8f0ebb3c2471fcffc912ab6e7b9ec5c4e0cbee8604050053df01c587aed5a7 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 08:05:31,670 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 08:05:31,673 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 08:05:31,709 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 08:05:31,710 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 08:05:31,711 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 08:05:31,713 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 08:05:31,716 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 08:05:31,719 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 08:05:31,720 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 08:05:31,722 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 08:05:31,723 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 08:05:31,724 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 08:05:31,725 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 08:05:31,727 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 08:05:31,729 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 08:05:31,731 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 08:05:31,732 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 08:05:31,735 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 08:05:31,738 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 08:05:31,741 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 08:05:31,743 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 08:05:31,745 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 08:05:31,753 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 08:05:31,757 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 08:05:31,758 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 08:05:31,758 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 08:05:31,759 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 08:05:31,760 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 08:05:31,761 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 08:05:31,762 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 08:05:31,763 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 08:05:31,764 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 08:05:31,765 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 08:05:31,766 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 08:05:31,767 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 08:05:31,768 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 08:05:31,774 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 08:05:31,776 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 08:05:31,777 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 08:05:31,778 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 08:05:31,778 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1626b3d2-3a64-498b-ae8a-740874156efe/bin/uautomizer-AkOaLMaTGY/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 08:05:31,844 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 08:05:31,844 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 08:05:31,845 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 08:05:31,845 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 08:05:31,850 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 08:05:31,850 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 08:05:31,851 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 08:05:31,851 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 08:05:31,851 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 08:05:31,851 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 08:05:31,852 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 08:05:31,852 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 08:05:31,852 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 08:05:31,852 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 08:05:31,852 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 08:05:31,852 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 08:05:31,853 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 08:05:31,853 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 08:05:31,853 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 08:05:31,853 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 08:05:31,854 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 08:05:31,854 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 08:05:31,854 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 08:05:31,854 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 08:05:31,854 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 08:05:31,855 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 08:05:31,855 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 08:05:31,855 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 08:05:31,855 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 08:05:31,855 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_1626b3d2-3a64-498b-ae8a-740874156efe/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1626b3d2-3a64-498b-ae8a-740874156efe/bin/uautomizer-AkOaLMaTGY Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cb8f0ebb3c2471fcffc912ab6e7b9ec5c4e0cbee8604050053df01c587aed5a7 [2021-11-07 08:05:32,156 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 08:05:32,177 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 08:05:32,180 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 08:05:32,181 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 08:05:32,182 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 08:05:32,183 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1626b3d2-3a64-498b-ae8a-740874156efe/bin/uautomizer-AkOaLMaTGY/../../sv-benchmarks/c/ldv-commit-tester/m0_drivers-usb-gadget-g_printer-ko--106_1a--2b9ec6c-1.i [2021-11-07 08:05:32,262 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1626b3d2-3a64-498b-ae8a-740874156efe/bin/uautomizer-AkOaLMaTGY/data/dc289df35/03411695db9c4c9e9e61aaecaa5cdee6/FLAGaf67908f3 [2021-11-07 08:05:33,019 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 08:05:33,020 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1626b3d2-3a64-498b-ae8a-740874156efe/sv-benchmarks/c/ldv-commit-tester/m0_drivers-usb-gadget-g_printer-ko--106_1a--2b9ec6c-1.i [2021-11-07 08:05:33,077 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1626b3d2-3a64-498b-ae8a-740874156efe/bin/uautomizer-AkOaLMaTGY/data/dc289df35/03411695db9c4c9e9e61aaecaa5cdee6/FLAGaf67908f3 [2021-11-07 08:05:33,119 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1626b3d2-3a64-498b-ae8a-740874156efe/bin/uautomizer-AkOaLMaTGY/data/dc289df35/03411695db9c4c9e9e61aaecaa5cdee6 [2021-11-07 08:05:33,124 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 08:05:33,126 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 08:05:33,130 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 08:05:33,130 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 08:05:33,134 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 08:05:33,135 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:05:33" (1/1) ... [2021-11-07 08:05:33,138 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13437ad1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:05:33, skipping insertion in model container [2021-11-07 08:05:33,138 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:05:33" (1/1) ... [2021-11-07 08:05:33,148 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 08:05:33,285 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 08:05:34,801 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_1626b3d2-3a64-498b-ae8a-740874156efe/sv-benchmarks/c/ldv-commit-tester/m0_drivers-usb-gadget-g_printer-ko--106_1a--2b9ec6c-1.i[158757,158770] [2021-11-07 08:05:34,833 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 08:05:34,870 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 08:05:35,306 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_1626b3d2-3a64-498b-ae8a-740874156efe/sv-benchmarks/c/ldv-commit-tester/m0_drivers-usb-gadget-g_printer-ko--106_1a--2b9ec6c-1.i[158757,158770] [2021-11-07 08:05:35,326 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 08:05:35,427 INFO L208 MainTranslator]: Completed translation [2021-11-07 08:05:35,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:05:35 WrapperNode [2021-11-07 08:05:35,428 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 08:05:35,431 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 08:05:35,431 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 08:05:35,431 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 08:05:35,440 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:05:35" (1/1) ... [2021-11-07 08:05:35,538 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:05:35" (1/1) ... [2021-11-07 08:05:37,384 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 08:05:37,388 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 08:05:37,388 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 08:05:37,388 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 08:05:37,413 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:05:35" (1/1) ... [2021-11-07 08:05:37,413 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:05:35" (1/1) ... [2021-11-07 08:05:37,958 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:05:35" (1/1) ... [2021-11-07 08:05:37,973 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:05:35" (1/1) ... [2021-11-07 08:05:39,409 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:05:35" (1/1) ... [2021-11-07 08:05:39,728 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:05:35" (1/1) ... [2021-11-07 08:05:39,864 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:05:35" (1/1) ... [2021-11-07 08:05:40,417 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 08:05:40,419 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 08:05:40,419 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 08:05:40,420 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 08:05:40,422 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:05:35" (1/1) ... [2021-11-07 08:05:40,639 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 08:05:40,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1626b3d2-3a64-498b-ae8a-740874156efe/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:05:40,722 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1626b3d2-3a64-498b-ae8a-740874156efe/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 08:05:40,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1626b3d2-3a64-498b-ae8a-740874156efe/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 08:05:40,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-07 08:05:40,856 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 08:05:40,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 08:05:40,857 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 08:05:40,858 INFO L130 BoogieDeclarations]: Found specification of procedure printer_soft_reset [2021-11-07 08:05:40,858 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_soft_reset [2021-11-07 08:05:40,858 INFO L130 BoogieDeclarations]: Found specification of procedure set_printer_interface [2021-11-07 08:05:40,858 INFO L138 BoogieDeclarations]: Found implementation of procedure set_printer_interface [2021-11-07 08:05:40,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 08:05:40,859 INFO L130 BoogieDeclarations]: Found specification of procedure set_interface [2021-11-07 08:05:40,859 INFO L138 BoogieDeclarations]: Found implementation of procedure set_interface [2021-11-07 08:05:40,859 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 08:05:40,859 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-11-07 08:05:40,859 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_alloc_notrace [2021-11-07 08:05:40,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 08:05:40,860 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 08:05:40,860 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-07 08:05:40,860 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_enable [2021-11-07 08:05:40,860 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_enable [2021-11-07 08:05:40,860 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 08:05:40,860 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 08:05:40,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 08:05:40,861 INFO L130 BoogieDeclarations]: Found specification of procedure printer_setup [2021-11-07 08:05:40,861 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_setup [2021-11-07 08:05:40,861 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-07 08:05:40,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-07 08:05:40,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 08:05:40,862 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-07 08:05:40,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 08:05:40,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 08:06:50,134 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 08:06:50,134 INFO L299 CfgBuilder]: Removed 13433 assume(true) statements. [2021-11-07 08:06:50,147 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:06:50 BoogieIcfgContainer [2021-11-07 08:06:50,147 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 08:06:50,149 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 08:06:50,149 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 08:06:50,153 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 08:06:50,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:05:33" (1/3) ... [2021-11-07 08:06:50,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b8d5955 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:06:50, skipping insertion in model container [2021-11-07 08:06:50,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:05:35" (2/3) ... [2021-11-07 08:06:50,155 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b8d5955 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:06:50, skipping insertion in model container [2021-11-07 08:06:50,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:06:50" (3/3) ... [2021-11-07 08:06:50,157 INFO L111 eAbstractionObserver]: Analyzing ICFG m0_drivers-usb-gadget-g_printer-ko--106_1a--2b9ec6c-1.i [2021-11-07 08:06:50,163 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 08:06:50,164 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2021-11-07 08:06:50,264 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 08:06:50,271 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 08:06:50,272 INFO L340 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2021-11-07 08:06:50,502 INFO L276 IsEmpty]: Start isEmpty. Operand has 11338 states, 11302 states have (on average 1.423376393558662) internal successors, (16087), 11321 states have internal predecessors, (16087), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-07 08:06:50,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-07 08:06:50,506 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:06:50,507 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:06:50,508 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 08:06:50,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:06:50,514 INFO L85 PathProgramCache]: Analyzing trace with hash 1003863478, now seen corresponding path program 1 times [2021-11-07 08:06:50,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:06:50,525 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77744660] [2021-11-07 08:06:50,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:06:50,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:06:51,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:06:51,372 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 08:06:51,373 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:06:51,373 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77744660] [2021-11-07 08:06:51,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77744660] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:06:51,375 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:06:51,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 08:06:51,378 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549997213] [2021-11-07 08:06:51,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:06:51,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:06:51,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:06:51,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:06:51,443 INFO L87 Difference]: Start difference. First operand has 11338 states, 11302 states have (on average 1.423376393558662) internal successors, (16087), 11321 states have internal predecessors, (16087), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 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 08:06:52,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:06:52,614 INFO L93 Difference]: Finished difference Result 29868 states and 41662 transitions. [2021-11-07 08:06:52,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:06:52,616 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2021-11-07 08:06:52,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:06:52,789 INFO L225 Difference]: With dead ends: 29868 [2021-11-07 08:06:52,790 INFO L226 Difference]: Without dead ends: 18529 [2021-11-07 08:06:52,874 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 08:06:52,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18529 states. [2021-11-07 08:06:54,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18529 to 18523. [2021-11-07 08:06:54,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18523 states, 18479 states have (on average 1.3693381676497647) internal successors, (25304), 18490 states have internal predecessors, (25304), 20 states have call successors, (20), 12 states have call predecessors, (20), 12 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-07 08:06:54,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18523 states to 18523 states and 25344 transitions. [2021-11-07 08:06:54,187 INFO L78 Accepts]: Start accepts. Automaton has 18523 states and 25344 transitions. Word has length 8 [2021-11-07 08:06:54,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:06:54,188 INFO L470 AbstractCegarLoop]: Abstraction has 18523 states and 25344 transitions. [2021-11-07 08:06:54,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 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 08:06:54,190 INFO L276 IsEmpty]: Start isEmpty. Operand 18523 states and 25344 transitions. [2021-11-07 08:06:54,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-07 08:06:54,191 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:06:54,191 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:06:54,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 08:06:54,193 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 08:06:54,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:06:54,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1055016019, now seen corresponding path program 1 times [2021-11-07 08:06:54,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:06:54,199 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44989018] [2021-11-07 08:06:54,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:06:54,201 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:06:54,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:06:54,576 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 08:06:54,577 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:06:54,578 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44989018] [2021-11-07 08:06:54,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44989018] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:06:54,579 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:06:54,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 08:06:54,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034994916] [2021-11-07 08:06:54,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:06:54,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:06:54,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:06:54,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:06:54,585 INFO L87 Difference]: Start difference. First operand 18523 states and 25344 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 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 08:06:55,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:06:55,633 INFO L93 Difference]: Finished difference Result 46242 states and 63288 transitions. [2021-11-07 08:06:55,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:06:55,635 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2021-11-07 08:06:55,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:06:55,884 INFO L225 Difference]: With dead ends: 46242 [2021-11-07 08:06:55,884 INFO L226 Difference]: Without dead ends: 37009 [2021-11-07 08:06:55,928 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 08:06:55,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37009 states. [2021-11-07 08:06:57,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37009 to 27787. [2021-11-07 08:06:57,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27787 states, 27728 states have (on average 1.3692296595499134) internal successors, (37966), 27738 states have internal predecessors, (37966), 30 states have call successors, (30), 18 states have call predecessors, (30), 18 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2021-11-07 08:06:57,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27787 states to 27787 states and 38026 transitions. [2021-11-07 08:06:57,791 INFO L78 Accepts]: Start accepts. Automaton has 27787 states and 38026 transitions. Word has length 9 [2021-11-07 08:06:57,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:06:57,793 INFO L470 AbstractCegarLoop]: Abstraction has 27787 states and 38026 transitions. [2021-11-07 08:06:57,793 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 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 08:06:57,793 INFO L276 IsEmpty]: Start isEmpty. Operand 27787 states and 38026 transitions. [2021-11-07 08:06:57,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-07 08:06:57,802 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:06:57,802 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:06:57,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 08:06:57,803 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 08:06:57,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:06:57,804 INFO L85 PathProgramCache]: Analyzing trace with hash 746265207, now seen corresponding path program 1 times [2021-11-07 08:06:57,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:06:57,806 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893250220] [2021-11-07 08:06:57,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:06:57,809 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:06:57,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:06:58,093 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 08:06:58,093 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:06:58,094 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893250220] [2021-11-07 08:06:58,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893250220] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:06:58,094 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:06:58,094 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 08:06:58,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913858287] [2021-11-07 08:06:58,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:06:58,095 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:06:58,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:06:58,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:06:58,097 INFO L87 Difference]: Start difference. First operand 27787 states and 38026 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 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 08:06:59,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:06:59,529 INFO L93 Difference]: Finished difference Result 64742 states and 88619 transitions. [2021-11-07 08:06:59,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:06:59,529 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 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 18 [2021-11-07 08:06:59,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:06:59,806 INFO L225 Difference]: With dead ends: 64742 [2021-11-07 08:06:59,806 INFO L226 Difference]: Without dead ends: 55505 [2021-11-07 08:06:59,858 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 08:06:59,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55505 states. [2021-11-07 08:07:01,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55505 to 27844. [2021-11-07 08:07:01,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27844 states, 27786 states have (on average 1.3688548189735839) internal successors, (38035), 27795 states have internal predecessors, (38035), 30 states have call successors, (30), 18 states have call predecessors, (30), 18 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2021-11-07 08:07:01,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27844 states to 27844 states and 38095 transitions. [2021-11-07 08:07:01,449 INFO L78 Accepts]: Start accepts. Automaton has 27844 states and 38095 transitions. Word has length 18 [2021-11-07 08:07:01,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:07:01,449 INFO L470 AbstractCegarLoop]: Abstraction has 27844 states and 38095 transitions. [2021-11-07 08:07:01,450 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 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 08:07:01,450 INFO L276 IsEmpty]: Start isEmpty. Operand 27844 states and 38095 transitions. [2021-11-07 08:07:01,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-07 08:07:01,452 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:07:01,452 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] [2021-11-07 08:07:01,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 08:07:01,452 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 08:07:01,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:07:01,455 INFO L85 PathProgramCache]: Analyzing trace with hash -2026520274, now seen corresponding path program 1 times [2021-11-07 08:07:01,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:07:01,456 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303940810] [2021-11-07 08:07:01,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:07:01,456 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:07:02,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:07:03,308 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 08:07:03,308 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:07:03,308 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303940810] [2021-11-07 08:07:03,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303940810] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:07:03,309 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:07:03,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-07 08:07:03,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231281251] [2021-11-07 08:07:03,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 08:07:03,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:07:03,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 08:07:03,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-07 08:07:03,311 INFO L87 Difference]: Start difference. First operand 27844 states and 38095 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 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 08:07:07,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:07:07,926 INFO L93 Difference]: Finished difference Result 92276 states and 125801 transitions. [2021-11-07 08:07:07,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-07 08:07:07,927 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 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 20 [2021-11-07 08:07:07,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:07:08,252 INFO L225 Difference]: With dead ends: 92276 [2021-11-07 08:07:08,253 INFO L226 Difference]: Without dead ends: 64534 [2021-11-07 08:07:08,333 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=107, Invalid=235, Unknown=0, NotChecked=0, Total=342 [2021-11-07 08:07:08,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64534 states. [2021-11-07 08:07:10,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64534 to 27854. [2021-11-07 08:07:10,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27854 states, 27796 states have (on average 1.3687221182904015) internal successors, (38045), 27805 states have internal predecessors, (38045), 30 states have call successors, (30), 18 states have call predecessors, (30), 18 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2021-11-07 08:07:10,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27854 states to 27854 states and 38105 transitions. [2021-11-07 08:07:10,454 INFO L78 Accepts]: Start accepts. Automaton has 27854 states and 38105 transitions. Word has length 20 [2021-11-07 08:07:10,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:07:10,454 INFO L470 AbstractCegarLoop]: Abstraction has 27854 states and 38105 transitions. [2021-11-07 08:07:10,455 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 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 08:07:10,455 INFO L276 IsEmpty]: Start isEmpty. Operand 27854 states and 38105 transitions. [2021-11-07 08:07:10,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-07 08:07:10,458 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:07:10,458 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 08:07:10,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 08:07:10,459 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 08:07:10,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:07:10,460 INFO L85 PathProgramCache]: Analyzing trace with hash -672145171, now seen corresponding path program 1 times [2021-11-07 08:07:10,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:07:10,461 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087328620] [2021-11-07 08:07:10,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:07:10,462 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:07:14,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:07:14,811 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 08:07:14,811 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:07:14,811 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087328620] [2021-11-07 08:07:14,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087328620] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:07:14,812 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:07:14,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-07 08:07:14,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503081352] [2021-11-07 08:07:14,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 08:07:14,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:07:14,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 08:07:14,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-11-07 08:07:14,814 INFO L87 Difference]: Start difference. First operand 27854 states and 38105 transitions. Second operand has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 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 08:07:20,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:07:20,536 INFO L93 Difference]: Finished difference Result 74742 states and 101747 transitions. [2021-11-07 08:07:20,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-07 08:07:20,537 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 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 08:07:20,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:07:20,784 INFO L225 Difference]: With dead ends: 74742 [2021-11-07 08:07:20,784 INFO L226 Difference]: Without dead ends: 65525 [2021-11-07 08:07:20,815 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=356, Invalid=976, Unknown=0, NotChecked=0, Total=1332 [2021-11-07 08:07:20,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65525 states. [2021-11-07 08:07:23,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65525 to 27844. [2021-11-07 08:07:23,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27844 states, 27786 states have (on average 1.3688188296264305) internal successors, (38034), 27795 states have internal predecessors, (38034), 30 states have call successors, (30), 18 states have call predecessors, (30), 18 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2021-11-07 08:07:23,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27844 states to 27844 states and 38094 transitions. [2021-11-07 08:07:23,368 INFO L78 Accepts]: Start accepts. Automaton has 27844 states and 38094 transitions. Word has length 23 [2021-11-07 08:07:23,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:07:23,375 INFO L470 AbstractCegarLoop]: Abstraction has 27844 states and 38094 transitions. [2021-11-07 08:07:23,375 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 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 08:07:23,376 INFO L276 IsEmpty]: Start isEmpty. Operand 27844 states and 38094 transitions. [2021-11-07 08:07:23,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-07 08:07:23,382 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:07:23,382 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] [2021-11-07 08:07:23,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 08:07:23,383 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 08:07:23,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:07:23,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1084968097, now seen corresponding path program 1 times [2021-11-07 08:07:23,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:07:23,386 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095599759] [2021-11-07 08:07:23,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:07:23,386 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:07:23,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:07:24,270 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 08:07:24,271 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:07:24,271 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095599759] [2021-11-07 08:07:24,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095599759] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:07:24,271 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:07:24,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-07 08:07:24,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138653714] [2021-11-07 08:07:24,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-07 08:07:24,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:07:24,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-07 08:07:24,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2021-11-07 08:07:24,274 INFO L87 Difference]: Start difference. First operand 27844 states and 38094 transitions. Second operand has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 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 08:07:33,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:07:33,454 INFO L93 Difference]: Finished difference Result 81654 states and 111640 transitions. [2021-11-07 08:07:33,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-07 08:07:33,456 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 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 25 [2021-11-07 08:07:33,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:07:33,701 INFO L225 Difference]: With dead ends: 81654 [2021-11-07 08:07:33,701 INFO L226 Difference]: Without dead ends: 72440 [2021-11-07 08:07:33,740 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=234, Invalid=578, Unknown=0, NotChecked=0, Total=812 [2021-11-07 08:07:33,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72440 states. [2021-11-07 08:07:36,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72440 to 27842. [2021-11-07 08:07:36,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27842 states, 27784 states have (on average 1.3688093866973798) internal successors, (38031), 27793 states have internal predecessors, (38031), 30 states have call successors, (30), 18 states have call predecessors, (30), 18 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2021-11-07 08:07:36,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27842 states to 27842 states and 38091 transitions. [2021-11-07 08:07:36,223 INFO L78 Accepts]: Start accepts. Automaton has 27842 states and 38091 transitions. Word has length 25 [2021-11-07 08:07:36,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:07:36,223 INFO L470 AbstractCegarLoop]: Abstraction has 27842 states and 38091 transitions. [2021-11-07 08:07:36,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 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 08:07:36,224 INFO L276 IsEmpty]: Start isEmpty. Operand 27842 states and 38091 transitions. [2021-11-07 08:07:36,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-07 08:07:36,225 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:07:36,225 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] [2021-11-07 08:07:36,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 08:07:36,225 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 08:07:36,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:07:36,226 INFO L85 PathProgramCache]: Analyzing trace with hash 2060968843, now seen corresponding path program 1 times [2021-11-07 08:07:36,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:07:36,227 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330525599] [2021-11-07 08:07:36,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:07:36,227 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:07:36,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:07:38,771 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 08:07:38,771 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:07:38,772 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330525599] [2021-11-07 08:07:38,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330525599] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:07:38,772 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:07:38,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-07 08:07:38,772 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771757642] [2021-11-07 08:07:38,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 08:07:38,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:07:38,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 08:07:38,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-11-07 08:07:38,774 INFO L87 Difference]: Start difference. First operand 27842 states and 38091 transitions. Second operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 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 08:07:42,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:07:42,173 INFO L93 Difference]: Finished difference Result 64034 states and 87565 transitions. [2021-11-07 08:07:42,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-07 08:07:42,173 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 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 26 [2021-11-07 08:07:42,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:07:42,249 INFO L225 Difference]: With dead ends: 64034 [2021-11-07 08:07:42,249 INFO L226 Difference]: Without dead ends: 36301 [2021-11-07 08:07:42,285 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=108, Invalid=234, Unknown=0, NotChecked=0, Total=342 [2021-11-07 08:07:42,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36301 states. [2021-11-07 08:07:44,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36301 to 27775. [2021-11-07 08:07:44,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27775 states, 27717 states have (on average 1.3692318793520222) internal successors, (37951), 27726 states have internal predecessors, (37951), 30 states have call successors, (30), 18 states have call predecessors, (30), 18 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2021-11-07 08:07:44,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27775 states to 27775 states and 38011 transitions. [2021-11-07 08:07:44,109 INFO L78 Accepts]: Start accepts. Automaton has 27775 states and 38011 transitions. Word has length 26 [2021-11-07 08:07:44,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:07:44,109 INFO L470 AbstractCegarLoop]: Abstraction has 27775 states and 38011 transitions. [2021-11-07 08:07:44,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 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 08:07:44,110 INFO L276 IsEmpty]: Start isEmpty. Operand 27775 states and 38011 transitions. [2021-11-07 08:07:44,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-07 08:07:44,110 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:07:44,111 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] [2021-11-07 08:07:44,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-07 08:07:44,111 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 08:07:44,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:07:44,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1106106172, now seen corresponding path program 1 times [2021-11-07 08:07:44,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:07:44,113 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140495161] [2021-11-07 08:07:44,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:07:44,114 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:07:44,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:07:44,304 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 08:07:44,304 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:07:44,305 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140495161] [2021-11-07 08:07:44,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140495161] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:07:44,305 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:07:44,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:07:44,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901680196] [2021-11-07 08:07:44,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:07:44,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:07:44,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:07:44,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:07:44,308 INFO L87 Difference]: Start difference. First operand 27775 states and 38011 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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 08:07:48,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:07:48,332 INFO L93 Difference]: Finished difference Result 36988 states and 50627 transitions. [2021-11-07 08:07:48,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:07:48,332 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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 26 [2021-11-07 08:07:48,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:07:48,401 INFO L225 Difference]: With dead ends: 36988 [2021-11-07 08:07:48,402 INFO L226 Difference]: Without dead ends: 36970 [2021-11-07 08:07:48,414 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 08:07:48,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36970 states.