./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--atheros--atlx--atl1.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7e70badd Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2deff6b4-ac83-4d46-9168-f03781892753/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2deff6b4-ac83-4d46-9168-f03781892753/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2deff6b4-ac83-4d46-9168-f03781892753/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2deff6b4-ac83-4d46-9168-f03781892753/bin/uautomizer-wIGwrQj20G/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--atheros--atlx--atl1.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2deff6b4-ac83-4d46-9168-f03781892753/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2deff6b4-ac83-4d46-9168-f03781892753/bin/uautomizer-wIGwrQj20G --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 a50782c14122c4e96fba85550d8baa150b55d4da62dbebbee116fe7764246c85 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 14:15:49,593 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 14:15:49,596 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 14:15:49,658 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 14:15:49,659 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 14:15:49,664 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 14:15:49,666 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 14:15:49,671 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 14:15:49,674 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 14:15:49,683 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 14:15:49,684 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 14:15:49,687 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 14:15:49,687 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 14:15:49,690 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 14:15:49,694 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 14:15:49,703 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 14:15:49,704 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 14:15:49,705 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 14:15:49,707 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 14:15:49,710 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 14:15:49,712 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 14:15:49,714 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 14:15:49,715 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 14:15:49,716 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 14:15:49,721 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 14:15:49,721 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 14:15:49,721 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 14:15:49,723 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 14:15:49,723 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 14:15:49,725 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 14:15:49,725 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 14:15:49,726 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 14:15:49,727 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 14:15:49,728 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 14:15:49,730 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 14:15:49,730 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 14:15:49,731 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 14:15:49,731 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 14:15:49,731 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 14:15:49,732 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 14:15:49,733 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 14:15:49,734 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2deff6b4-ac83-4d46-9168-f03781892753/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-23 14:15:49,782 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 14:15:49,782 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 14:15:49,783 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 14:15:49,783 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 14:15:49,792 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 14:15:49,792 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 14:15:49,792 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 14:15:49,793 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 14:15:49,793 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 14:15:49,793 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 14:15:49,795 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 14:15:49,795 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 14:15:49,795 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 14:15:49,795 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 14:15:49,796 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 14:15:49,796 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 14:15:49,796 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 14:15:49,796 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 14:15:49,797 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 14:15:49,797 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 14:15:49,797 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 14:15:49,798 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 14:15:49,798 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 14:15:49,798 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 14:15:49,798 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 14:15:49,799 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 14:15:49,799 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 14:15:49,799 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 14:15:49,799 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 14:15:49,801 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_2deff6b4-ac83-4d46-9168-f03781892753/bin/uautomizer-wIGwrQj20G/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2deff6b4-ac83-4d46-9168-f03781892753/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a50782c14122c4e96fba85550d8baa150b55d4da62dbebbee116fe7764246c85 [2021-11-23 14:15:50,121 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 14:15:50,158 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 14:15:50,160 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 14:15:50,162 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 14:15:50,165 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 14:15:50,166 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2deff6b4-ac83-4d46-9168-f03781892753/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--atheros--atlx--atl1.ko-entry_point.cil.out.i [2021-11-23 14:15:50,280 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2deff6b4-ac83-4d46-9168-f03781892753/bin/uautomizer-wIGwrQj20G/data/6b9f05584/e0b22acc17544d50a0130e0e2e02eac4/FLAG49a8e2b38 [2021-11-23 14:15:51,311 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 14:15:51,313 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2deff6b4-ac83-4d46-9168-f03781892753/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--atheros--atlx--atl1.ko-entry_point.cil.out.i [2021-11-23 14:15:51,390 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2deff6b4-ac83-4d46-9168-f03781892753/bin/uautomizer-wIGwrQj20G/data/6b9f05584/e0b22acc17544d50a0130e0e2e02eac4/FLAG49a8e2b38 [2021-11-23 14:15:51,673 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2deff6b4-ac83-4d46-9168-f03781892753/bin/uautomizer-wIGwrQj20G/data/6b9f05584/e0b22acc17544d50a0130e0e2e02eac4 [2021-11-23 14:15:51,675 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 14:15:51,676 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 14:15:51,678 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 14:15:51,678 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 14:15:51,697 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 14:15:51,697 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:15:51" (1/1) ... [2021-11-23 14:15:51,698 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36e4d0ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:15:51, skipping insertion in model container [2021-11-23 14:15:51,698 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:15:51" (1/1) ... [2021-11-23 14:15:51,704 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 14:15:51,855 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 14:15:53,518 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2deff6b4-ac83-4d46-9168-f03781892753/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--atheros--atlx--atl1.ko-entry_point.cil.out.i[198904,198917] [2021-11-23 14:15:55,336 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 14:15:55,409 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 14:15:55,636 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2deff6b4-ac83-4d46-9168-f03781892753/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--atheros--atlx--atl1.ko-entry_point.cil.out.i[198904,198917] [2021-11-23 14:15:56,021 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 14:15:56,406 INFO L208 MainTranslator]: Completed translation [2021-11-23 14:15:56,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:15:56 WrapperNode [2021-11-23 14:15:56,407 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 14:15:56,410 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 14:15:56,411 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 14:15:56,411 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 14:15:56,420 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:15:56" (1/1) ... [2021-11-23 14:15:56,604 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:15:56" (1/1) ... [2021-11-23 14:15:58,228 INFO L137 Inliner]: procedures = 398, calls = 3556, calls flagged for inlining = 837, calls inlined = 4279, statements flattened = 53886 [2021-11-23 14:15:58,247 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 14:15:58,248 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 14:15:58,248 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 14:15:58,249 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 14:15:58,265 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:15:56" (1/1) ... [2021-11-23 14:15:58,265 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:15:56" (1/1) ... [2021-11-23 14:15:58,687 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:15:56" (1/1) ... [2021-11-23 14:15:58,688 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:15:56" (1/1) ... [2021-11-23 14:15:59,796 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:15:56" (1/1) ... [2021-11-23 14:15:59,976 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:15:56" (1/1) ... [2021-11-23 14:16:00,076 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:15:56" (1/1) ... [2021-11-23 14:16:00,495 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 14:16:00,497 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 14:16:00,497 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 14:16:00,497 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 14:16:00,498 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:15:56" (1/1) ... [2021-11-23 14:16:00,519 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 14:16:00,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2deff6b4-ac83-4d46-9168-f03781892753/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 14:16:00,557 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2deff6b4-ac83-4d46-9168-f03781892753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 14:16:00,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2deff6b4-ac83-4d46-9168-f03781892753/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 14:16:00,671 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2021-11-23 14:16:00,672 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 14:16:00,672 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-23 14:16:00,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-23 14:16:00,673 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 14:16:00,673 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 14:16:00,673 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 14:16:00,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 14:16:00,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 14:16:00,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 14:16:00,674 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-23 14:16:00,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-23 14:16:00,674 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 14:16:00,675 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 14:16:00,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 14:16:00,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 14:16:00,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 14:16:01,945 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 14:16:01,954 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 14:28:36,732 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 14:28:36,786 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 14:28:36,786 INFO L301 CfgBuilder]: Removed 44 assume(true) statements. [2021-11-23 14:28:36,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:28:36 BoogieIcfgContainer [2021-11-23 14:28:36,797 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 14:28:36,799 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 14:28:36,799 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 14:28:36,802 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 14:28:36,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:15:51" (1/3) ... [2021-11-23 14:28:36,803 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c839d22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:28:36, skipping insertion in model container [2021-11-23 14:28:36,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:15:56" (2/3) ... [2021-11-23 14:28:36,804 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c839d22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:28:36, skipping insertion in model container [2021-11-23 14:28:36,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:28:36" (3/3) ... [2021-11-23 14:28:36,805 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--atheros--atlx--atl1.ko-entry_point.cil.out.i [2021-11-23 14:28:36,811 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 14:28:36,811 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 14:28:36,904 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 14:28:36,920 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 [2021-11-23 14:28:36,922 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 14:28:37,060 INFO L276 IsEmpty]: Start isEmpty. Operand has 8741 states, 8739 states have (on average 1.3636571690124728) internal successors, (11917), 8740 states have internal predecessors, (11917), 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) [2021-11-23 14:28:37,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-23 14:28:37,085 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:28:37,086 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:28:37,087 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 14:28:37,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:28:37,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1894360525, now seen corresponding path program 1 times [2021-11-23 14:28:37,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:28:37,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748927896] [2021-11-23 14:28:37,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:28:37,104 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:28:38,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:28:38,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:28:38,729 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:28:38,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748927896] [2021-11-23 14:28:38,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748927896] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:28:38,731 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:28:38,731 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 14:28:38,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262499653] [2021-11-23 14:28:38,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:28:38,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 14:28:38,737 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:28:38,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 14:28:38,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 14:28:38,803 INFO L87 Difference]: Start difference. First operand has 8741 states, 8739 states have (on average 1.3636571690124728) internal successors, (11917), 8740 states have internal predecessors, (11917), 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) Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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) [2021-11-23 14:28:40,996 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 14:28:42,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:28:42,129 INFO L93 Difference]: Finished difference Result 26104 states and 35592 transitions. [2021-11-23 14:28:42,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 14:28:42,131 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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 43 [2021-11-23 14:28:42,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:28:42,262 INFO L225 Difference]: With dead ends: 26104 [2021-11-23 14:28:42,262 INFO L226 Difference]: Without dead ends: 17216 [2021-11-23 14:28:42,292 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 14:28:42,298 INFO L933 BasicCegarLoop]: 11782 mSDtfsCounter, 11647 mSDsluCounter, 11769 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11647 SdHoareTripleChecker+Valid, 23551 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-11-23 14:28:42,300 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11647 Valid, 23551 Invalid, 15 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2021-11-23 14:28:42,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17216 states. [2021-11-23 14:28:42,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17216 to 17216. [2021-11-23 14:28:42,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17216 states, 17215 states have (on average 1.3438861458030786) internal successors, (23135), 17215 states have internal predecessors, (23135), 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) [2021-11-23 14:28:42,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17216 states to 17216 states and 23135 transitions. [2021-11-23 14:28:42,951 INFO L78 Accepts]: Start accepts. Automaton has 17216 states and 23135 transitions. Word has length 43 [2021-11-23 14:28:42,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:28:42,952 INFO L470 AbstractCegarLoop]: Abstraction has 17216 states and 23135 transitions. [2021-11-23 14:28:42,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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) [2021-11-23 14:28:42,953 INFO L276 IsEmpty]: Start isEmpty. Operand 17216 states and 23135 transitions. [2021-11-23 14:28:42,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-23 14:28:42,955 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:28:42,956 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:28:42,956 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 14:28:42,956 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 14:28:42,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:28:42,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1279393616, now seen corresponding path program 1 times [2021-11-23 14:28:42,957 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:28:42,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049587009] [2021-11-23 14:28:42,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:28:42,958 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:28:43,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:28:43,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:28:43,823 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:28:43,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049587009] [2021-11-23 14:28:43,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049587009] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:28:43,824 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:28:43,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 14:28:43,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866786468] [2021-11-23 14:28:43,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:28:43,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 14:28:43,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:28:43,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 14:28:43,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 14:28:43,826 INFO L87 Difference]: Start difference. First operand 17216 states and 23135 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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) [2021-11-23 14:28:46,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:28:46,790 INFO L93 Difference]: Finished difference Result 34373 states and 46199 transitions. [2021-11-23 14:28:46,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 14:28:46,791 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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 45 [2021-11-23 14:28:46,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:28:46,918 INFO L225 Difference]: With dead ends: 34373 [2021-11-23 14:28:46,918 INFO L226 Difference]: Without dead ends: 34366 [2021-11-23 14:28:46,932 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 14:28:46,934 INFO L933 BasicCegarLoop]: 11521 mSDtfsCounter, 11589 mSDsluCounter, 34492 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11589 SdHoareTripleChecker+Valid, 46013 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-23 14:28:46,934 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11589 Valid, 46013 Invalid, 449 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-23 14:28:46,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34366 states. [2021-11-23 14:28:47,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34366 to 34190. [2021-11-23 14:28:47,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34190 states, 34189 states have (on average 1.3446137646611482) internal successors, (45971), 34189 states have internal predecessors, (45971), 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) [2021-11-23 14:28:48,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34190 states to 34190 states and 45971 transitions. [2021-11-23 14:28:48,308 INFO L78 Accepts]: Start accepts. Automaton has 34190 states and 45971 transitions. Word has length 45 [2021-11-23 14:28:48,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:28:48,309 INFO L470 AbstractCegarLoop]: Abstraction has 34190 states and 45971 transitions. [2021-11-23 14:28:48,311 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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) [2021-11-23 14:28:48,311 INFO L276 IsEmpty]: Start isEmpty. Operand 34190 states and 45971 transitions. [2021-11-23 14:28:48,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-23 14:28:48,351 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:28:48,351 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:28:48,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 14:28:48,359 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 14:28:48,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:28:48,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1106689570, now seen corresponding path program 1 times [2021-11-23 14:28:48,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:28:48,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355416309] [2021-11-23 14:28:48,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:28:48,360 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:28:48,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:28:49,552 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 14:28:49,553 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:28:49,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355416309] [2021-11-23 14:28:49,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355416309] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:28:49,553 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:28:49,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 14:28:49,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446892324] [2021-11-23 14:28:49,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:28:49,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 14:28:49,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:28:49,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 14:28:49,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 14:28:49,555 INFO L87 Difference]: Start difference. First operand 34190 states and 45971 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 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) [2021-11-23 14:28:51,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:28:51,288 INFO L93 Difference]: Finished difference Result 94736 states and 127369 transitions. [2021-11-23 14:28:51,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 14:28:51,289 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 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 154 [2021-11-23 14:28:51,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:28:51,446 INFO L225 Difference]: With dead ends: 94736 [2021-11-23 14:28:51,447 INFO L226 Difference]: Without dead ends: 60605 [2021-11-23 14:28:51,525 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 14:28:51,534 INFO L933 BasicCegarLoop]: 11637 mSDtfsCounter, 9007 mSDsluCounter, 11499 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9007 SdHoareTripleChecker+Valid, 23136 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-23 14:28:51,537 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9007 Valid, 23136 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-23 14:28:51,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60605 states. [2021-11-23 14:28:53,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60605 to 60534. [2021-11-23 14:28:53,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60534 states, 60533 states have (on average 1.3444402226884509) internal successors, (81383), 60533 states have internal predecessors, (81383), 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) [2021-11-23 14:28:53,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60534 states to 60534 states and 81383 transitions. [2021-11-23 14:28:53,673 INFO L78 Accepts]: Start accepts. Automaton has 60534 states and 81383 transitions. Word has length 154 [2021-11-23 14:28:53,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:28:53,675 INFO L470 AbstractCegarLoop]: Abstraction has 60534 states and 81383 transitions. [2021-11-23 14:28:53,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 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) [2021-11-23 14:28:53,675 INFO L276 IsEmpty]: Start isEmpty. Operand 60534 states and 81383 transitions. [2021-11-23 14:28:53,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-11-23 14:28:53,734 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:28:53,735 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:28:53,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 14:28:53,736 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 14:28:53,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:28:53,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1163728965, now seen corresponding path program 1 times [2021-11-23 14:28:53,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:28:53,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888219405] [2021-11-23 14:28:53,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:28:53,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:28:54,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:28:54,676 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 14:28:54,676 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:28:54,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888219405] [2021-11-23 14:28:54,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888219405] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:28:54,677 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:28:54,677 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 14:28:54,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655601234] [2021-11-23 14:28:54,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:28:54,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 14:28:54,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:28:54,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 14:28:54,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 14:28:54,684 INFO L87 Difference]: Start difference. First operand 60534 states and 81383 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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) [2021-11-23 14:28:57,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:28:57,385 INFO L93 Difference]: Finished difference Result 176036 states and 236583 transitions. [2021-11-23 14:28:57,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 14:28:57,390 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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 159 [2021-11-23 14:28:57,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:28:57,703 INFO L225 Difference]: With dead ends: 176036 [2021-11-23 14:28:57,703 INFO L226 Difference]: Without dead ends: 115561 [2021-11-23 14:28:57,861 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 14:28:57,863 INFO L933 BasicCegarLoop]: 14250 mSDtfsCounter, 10684 mSDsluCounter, 11547 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10684 SdHoareTripleChecker+Valid, 25797 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 14:28:57,864 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10684 Valid, 25797 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 14:28:57,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115561 states. [2021-11-23 14:29:00,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115561 to 115502. [2021-11-23 14:29:00,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115502 states, 115501 states have (on average 1.3436680201903013) internal successors, (155195), 115501 states have internal predecessors, (155195), 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) [2021-11-23 14:29:01,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115502 states to 115502 states and 155195 transitions. [2021-11-23 14:29:01,210 INFO L78 Accepts]: Start accepts. Automaton has 115502 states and 155195 transitions. Word has length 159 [2021-11-23 14:29:01,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:29:01,210 INFO L470 AbstractCegarLoop]: Abstraction has 115502 states and 155195 transitions. [2021-11-23 14:29:01,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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) [2021-11-23 14:29:01,211 INFO L276 IsEmpty]: Start isEmpty. Operand 115502 states and 155195 transitions. [2021-11-23 14:29:01,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-11-23 14:29:01,327 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:29:01,328 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:29:01,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 14:29:01,328 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 14:29:01,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:29:01,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1579425598, now seen corresponding path program 1 times [2021-11-23 14:29:01,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:29:01,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095192417] [2021-11-23 14:29:01,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:29:01,330 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:29:01,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:29:02,052 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 14:29:02,052 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:29:02,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095192417] [2021-11-23 14:29:02,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095192417] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:29:02,052 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:29:02,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 14:29:02,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552292337] [2021-11-23 14:29:02,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:29:02,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 14:29:02,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:29:02,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 14:29:02,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 14:29:02,054 INFO L87 Difference]: Start difference. First operand 115502 states and 155195 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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) [2021-11-23 14:29:06,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:29:06,893 INFO L93 Difference]: Finished difference Result 307048 states and 411961 transitions. [2021-11-23 14:29:06,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 14:29:06,894 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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 159 [2021-11-23 14:29:06,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:29:07,205 INFO L225 Difference]: With dead ends: 307048 [2021-11-23 14:29:07,206 INFO L226 Difference]: Without dead ends: 191605 [2021-11-23 14:29:07,329 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 14:29:07,330 INFO L933 BasicCegarLoop]: 15178 mSDtfsCounter, 8220 mSDsluCounter, 11505 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8220 SdHoareTripleChecker+Valid, 26683 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-23 14:29:07,330 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8220 Valid, 26683 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-23 14:29:07,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191605 states. [2021-11-23 14:29:11,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191605 to 191598. [2021-11-23 14:29:12,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191598 states, 191597 states have (on average 1.3403915510159345) internal successors, (256815), 191597 states have internal predecessors, (256815), 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) [2021-11-23 14:29:12,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191598 states to 191598 states and 256815 transitions. [2021-11-23 14:29:12,688 INFO L78 Accepts]: Start accepts. Automaton has 191598 states and 256815 transitions. Word has length 159 [2021-11-23 14:29:12,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:29:12,689 INFO L470 AbstractCegarLoop]: Abstraction has 191598 states and 256815 transitions. [2021-11-23 14:29:12,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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) [2021-11-23 14:29:12,690 INFO L276 IsEmpty]: Start isEmpty. Operand 191598 states and 256815 transitions. [2021-11-23 14:29:12,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-11-23 14:29:12,843 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:29:12,843 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:29:12,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 14:29:12,844 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 14:29:12,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:29:12,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1390363736, now seen corresponding path program 1 times [2021-11-23 14:29:12,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:29:12,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336148121] [2021-11-23 14:29:12,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:29:12,846 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:29:13,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:29:13,612 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 14:29:13,613 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:29:13,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336148121] [2021-11-23 14:29:13,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336148121] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:29:13,613 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:29:13,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 14:29:13,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938628784] [2021-11-23 14:29:13,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:29:13,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 14:29:13,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:29:13,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 14:29:13,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 14:29:13,615 INFO L87 Difference]: Start difference. First operand 191598 states and 256815 transitions. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 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)