./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--iio--accel--kxcjk-1013.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_f48ea219-1f5f-4cc1-829d-d8f1ec6e247d/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f48ea219-1f5f-4cc1-829d-d8f1ec6e247d/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_f48ea219-1f5f-4cc1-829d-d8f1ec6e247d/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f48ea219-1f5f-4cc1-829d-d8f1ec6e247d/bin/uautomizer-wIGwrQj20G/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--iio--accel--kxcjk-1013.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f48ea219-1f5f-4cc1-829d-d8f1ec6e247d/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_f48ea219-1f5f-4cc1-829d-d8f1ec6e247d/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 3e9c6ba87a54868dec599f719996df2badd1b08d2641eaf7156cfe2e5d004f90 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 12:36:02,893 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 12:36:02,896 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 12:36:02,955 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 12:36:02,955 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 12:36:02,961 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 12:36:02,963 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 12:36:02,967 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 12:36:02,970 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 12:36:02,977 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 12:36:02,978 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 12:36:02,980 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 12:36:02,981 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 12:36:02,984 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 12:36:02,987 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 12:36:02,992 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 12:36:02,994 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 12:36:02,996 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 12:36:02,999 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 12:36:03,008 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 12:36:03,010 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 12:36:03,012 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 12:36:03,015 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 12:36:03,016 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 12:36:03,026 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 12:36:03,027 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 12:36:03,027 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 12:36:03,030 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 12:36:03,030 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 12:36:03,032 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 12:36:03,033 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 12:36:03,034 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 12:36:03,037 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 12:36:03,038 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 12:36:03,040 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 12:36:03,040 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 12:36:03,041 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 12:36:03,041 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 12:36:03,042 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 12:36:03,043 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 12:36:03,044 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 12:36:03,045 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f48ea219-1f5f-4cc1-829d-d8f1ec6e247d/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-23 12:36:03,091 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 12:36:03,092 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 12:36:03,093 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 12:36:03,093 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 12:36:03,101 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 12:36:03,101 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 12:36:03,101 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 12:36:03,102 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 12:36:03,102 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 12:36:03,102 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 12:36:03,103 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 12:36:03,104 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 12:36:03,104 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 12:36:03,104 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 12:36:03,104 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 12:36:03,104 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 12:36:03,105 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 12:36:03,105 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 12:36:03,105 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 12:36:03,106 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 12:36:03,106 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 12:36:03,106 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 12:36:03,106 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 12:36:03,107 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 12:36:03,107 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 12:36:03,107 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 12:36:03,107 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 12:36:03,108 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 12:36:03,108 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 12:36:03,109 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_f48ea219-1f5f-4cc1-829d-d8f1ec6e247d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f48ea219-1f5f-4cc1-829d-d8f1ec6e247d/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3e9c6ba87a54868dec599f719996df2badd1b08d2641eaf7156cfe2e5d004f90 [2021-11-23 12:36:03,438 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 12:36:03,476 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 12:36:03,479 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 12:36:03,480 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 12:36:03,482 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 12:36:03,483 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f48ea219-1f5f-4cc1-829d-d8f1ec6e247d/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--iio--accel--kxcjk-1013.ko-entry_point.cil.out.i [2021-11-23 12:36:03,564 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f48ea219-1f5f-4cc1-829d-d8f1ec6e247d/bin/uautomizer-wIGwrQj20G/data/e5a21718e/3766a1747ccf423ea2716c6bce72191f/FLAGd90c0f8bc [2021-11-23 12:36:04,585 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 12:36:04,586 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f48ea219-1f5f-4cc1-829d-d8f1ec6e247d/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--iio--accel--kxcjk-1013.ko-entry_point.cil.out.i [2021-11-23 12:36:04,646 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f48ea219-1f5f-4cc1-829d-d8f1ec6e247d/bin/uautomizer-wIGwrQj20G/data/e5a21718e/3766a1747ccf423ea2716c6bce72191f/FLAGd90c0f8bc [2021-11-23 12:36:05,022 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f48ea219-1f5f-4cc1-829d-d8f1ec6e247d/bin/uautomizer-wIGwrQj20G/data/e5a21718e/3766a1747ccf423ea2716c6bce72191f [2021-11-23 12:36:05,024 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 12:36:05,026 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 12:36:05,027 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 12:36:05,028 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 12:36:05,032 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 12:36:05,033 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:36:05" (1/1) ... [2021-11-23 12:36:05,034 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25feeb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:36:05, skipping insertion in model container [2021-11-23 12:36:05,034 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:36:05" (1/1) ... [2021-11-23 12:36:05,042 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 12:36:05,185 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 12:36:07,106 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_f48ea219-1f5f-4cc1-829d-d8f1ec6e247d/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--iio--accel--kxcjk-1013.ko-entry_point.cil.out.i[206964,206977] [2021-11-23 12:36:07,159 WARN L610 FunctionHandler]: implicit declaration of function ldv_xmalloc [2021-11-23 12:36:07,171 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 12:36:07,290 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 12:36:07,682 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_f48ea219-1f5f-4cc1-829d-d8f1ec6e247d/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--iio--accel--kxcjk-1013.ko-entry_point.cil.out.i[206964,206977] [2021-11-23 12:36:07,693 WARN L610 FunctionHandler]: implicit declaration of function ldv_xmalloc [2021-11-23 12:36:07,697 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 12:36:07,917 INFO L208 MainTranslator]: Completed translation [2021-11-23 12:36:07,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:36:07 WrapperNode [2021-11-23 12:36:07,919 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 12:36:07,920 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 12:36:07,920 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 12:36:07,921 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 12:36:07,930 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:36:07" (1/1) ... [2021-11-23 12:36:08,038 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:36:07" (1/1) ... [2021-11-23 12:36:08,519 INFO L137 Inliner]: procedures = 217, calls = 1318, calls flagged for inlining = 378, calls inlined = 927, statements flattened = 12853 [2021-11-23 12:36:08,520 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 12:36:08,521 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 12:36:08,521 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 12:36:08,521 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 12:36:08,531 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:36:07" (1/1) ... [2021-11-23 12:36:08,531 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:36:07" (1/1) ... [2021-11-23 12:36:08,744 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:36:07" (1/1) ... [2021-11-23 12:36:08,745 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:36:07" (1/1) ... [2021-11-23 12:36:08,919 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:36:07" (1/1) ... [2021-11-23 12:36:08,975 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:36:07" (1/1) ... [2021-11-23 12:36:09,010 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:36:07" (1/1) ... [2021-11-23 12:36:09,066 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 12:36:09,068 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 12:36:09,068 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 12:36:09,068 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 12:36:09,070 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:36:07" (1/1) ... [2021-11-23 12:36:09,080 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 12:36:09,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f48ea219-1f5f-4cc1-829d-d8f1ec6e247d/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:36:09,174 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f48ea219-1f5f-4cc1-829d-d8f1ec6e247d/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 12:36:09,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f48ea219-1f5f-4cc1-829d-d8f1ec6e247d/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 12:36:09,245 INFO L130 BoogieDeclarations]: Found specification of procedure __cmpxchg_wrong_size [2021-11-23 12:36:09,245 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 12:36:09,245 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 12:36:09,245 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-23 12:36:09,246 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 12:36:09,246 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 12:36:09,246 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-23 12:36:09,246 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 12:36:09,246 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 12:36:09,246 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 12:36:09,247 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 12:36:09,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 12:36:09,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 12:36:09,247 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 12:36:09,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 12:36:10,007 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 12:36:10,009 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 12:36:39,873 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 12:36:39,915 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 12:36:39,916 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-23 12:36:39,922 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:36:39 BoogieIcfgContainer [2021-11-23 12:36:39,922 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 12:36:39,926 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 12:36:39,926 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 12:36:39,930 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 12:36:39,930 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 12:36:05" (1/3) ... [2021-11-23 12:36:39,931 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@424041e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:36:39, skipping insertion in model container [2021-11-23 12:36:39,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:36:07" (2/3) ... [2021-11-23 12:36:39,931 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@424041e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:36:39, skipping insertion in model container [2021-11-23 12:36:39,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:36:39" (3/3) ... [2021-11-23 12:36:39,933 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--iio--accel--kxcjk-1013.ko-entry_point.cil.out.i [2021-11-23 12:36:39,944 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 12:36:39,944 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 12:36:39,999 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 12:36:40,006 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 12:36:40,007 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 12:36:40,068 INFO L276 IsEmpty]: Start isEmpty. Operand has 2098 states, 2096 states have (on average 1.4260496183206106) internal successors, (2989), 2097 states have internal predecessors, (2989), 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 12:36:40,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-11-23 12:36:40,092 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:36:40,093 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:36:40,094 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:36:40,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:36:40,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1671558264, now seen corresponding path program 1 times [2021-11-23 12:36:40,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:36:40,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199317426] [2021-11-23 12:36:40,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:36:40,111 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:36:40,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:36:41,004 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 12:36:41,004 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:36:41,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199317426] [2021-11-23 12:36:41,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199317426] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:36:41,006 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:36:41,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 12:36:41,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852220605] [2021-11-23 12:36:41,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:36:41,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 12:36:41,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:36:41,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 12:36:41,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 12:36:41,082 INFO L87 Difference]: Start difference. First operand has 2098 states, 2096 states have (on average 1.4260496183206106) internal successors, (2989), 2097 states have internal predecessors, (2989), 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 2 states, 2 states have (on average 60.0) internal successors, (120), 2 states have internal predecessors, (120), 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 12:36:41,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:36:41,265 INFO L93 Difference]: Finished difference Result 4191 states and 5972 transitions. [2021-11-23 12:36:41,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 12:36:41,268 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 60.0) internal successors, (120), 2 states have internal predecessors, (120), 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 120 [2021-11-23 12:36:41,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:36:41,304 INFO L225 Difference]: With dead ends: 4191 [2021-11-23 12:36:41,305 INFO L226 Difference]: Without dead ends: 2074 [2021-11-23 12:36:41,317 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 12:36:41,323 INFO L933 BasicCegarLoop]: 2962 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2962 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:36:41,324 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 2962 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:36:41,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2074 states. [2021-11-23 12:36:41,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2074 to 2074. [2021-11-23 12:36:41,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2074 states, 2073 states have (on average 1.4085865894838399) internal successors, (2920), 2073 states have internal predecessors, (2920), 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 12:36:41,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2074 states to 2074 states and 2920 transitions. [2021-11-23 12:36:41,499 INFO L78 Accepts]: Start accepts. Automaton has 2074 states and 2920 transitions. Word has length 120 [2021-11-23 12:36:41,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:36:41,501 INFO L470 AbstractCegarLoop]: Abstraction has 2074 states and 2920 transitions. [2021-11-23 12:36:41,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 60.0) internal successors, (120), 2 states have internal predecessors, (120), 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 12:36:41,501 INFO L276 IsEmpty]: Start isEmpty. Operand 2074 states and 2920 transitions. [2021-11-23 12:36:41,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-11-23 12:36:41,508 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:36:41,508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:36:41,509 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 12:36:41,509 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:36:41,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:36:41,513 INFO L85 PathProgramCache]: Analyzing trace with hash 2011218074, now seen corresponding path program 1 times [2021-11-23 12:36:41,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:36:41,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308321687] [2021-11-23 12:36:41,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:36:41,514 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:36:41,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:36:41,996 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 12:36:41,997 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:36:41,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308321687] [2021-11-23 12:36:41,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308321687] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:36:41,998 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:36:41,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:36:41,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312793933] [2021-11-23 12:36:41,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:36:42,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:36:42,000 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:36:42,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:36:42,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:36:42,002 INFO L87 Difference]: Start difference. First operand 2074 states and 2920 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 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 12:36:44,107 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 12:36:44,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:36:44,506 INFO L93 Difference]: Finished difference Result 5987 states and 8489 transitions. [2021-11-23 12:36:44,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:36:44,507 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 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 120 [2021-11-23 12:36:44,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:36:44,537 INFO L225 Difference]: With dead ends: 5987 [2021-11-23 12:36:44,537 INFO L226 Difference]: Without dead ends: 4014 [2021-11-23 12:36:44,543 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 12:36:44,545 INFO L933 BasicCegarLoop]: 2917 mSDtfsCounter, 2754 mSDsluCounter, 2906 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2754 SdHoareTripleChecker+Valid, 5823 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-23 12:36:44,546 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2754 Valid, 5823 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2021-11-23 12:36:44,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4014 states. [2021-11-23 12:36:44,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4014 to 4014. [2021-11-23 12:36:44,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4014 states, 4013 states have (on average 1.4166459008223273) internal successors, (5685), 4013 states have internal predecessors, (5685), 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 12:36:44,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4014 states to 4014 states and 5685 transitions. [2021-11-23 12:36:44,709 INFO L78 Accepts]: Start accepts. Automaton has 4014 states and 5685 transitions. Word has length 120 [2021-11-23 12:36:44,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:36:44,710 INFO L470 AbstractCegarLoop]: Abstraction has 4014 states and 5685 transitions. [2021-11-23 12:36:44,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 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 12:36:44,711 INFO L276 IsEmpty]: Start isEmpty. Operand 4014 states and 5685 transitions. [2021-11-23 12:36:44,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-23 12:36:44,715 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:36:44,715 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:36:44,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 12:36:44,716 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:36:44,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:36:44,717 INFO L85 PathProgramCache]: Analyzing trace with hash 2081144320, now seen corresponding path program 1 times [2021-11-23 12:36:44,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:36:44,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038431251] [2021-11-23 12:36:44,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:36:44,718 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:36:44,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:36:45,265 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 12:36:45,265 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:36:45,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038431251] [2021-11-23 12:36:45,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038431251] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:36:45,266 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:36:45,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 12:36:45,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485692125] [2021-11-23 12:36:45,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:36:45,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:36:45,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:36:45,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:36:45,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:36:45,276 INFO L87 Difference]: Start difference. First operand 4014 states and 5685 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 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 12:36:45,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:36:45,528 INFO L93 Difference]: Finished difference Result 7927 states and 11251 transitions. [2021-11-23 12:36:45,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:36:45,529 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 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 123 [2021-11-23 12:36:45,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:36:45,587 INFO L225 Difference]: With dead ends: 7927 [2021-11-23 12:36:45,588 INFO L226 Difference]: Without dead ends: 7921 [2021-11-23 12:36:45,595 INFO L932 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 [2021-11-23 12:36:45,601 INFO L933 BasicCegarLoop]: 2930 mSDtfsCounter, 2796 mSDsluCounter, 2799 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2796 SdHoareTripleChecker+Valid, 5729 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:36:45,605 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2796 Valid, 5729 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:36:45,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7921 states. [2021-11-23 12:36:45,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7921 to 7921. [2021-11-23 12:36:46,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7921 states, 7920 states have (on average 1.419570707070707) internal successors, (11243), 7920 states have internal predecessors, (11243), 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 12:36:46,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7921 states to 7921 states and 11243 transitions. [2021-11-23 12:36:46,057 INFO L78 Accepts]: Start accepts. Automaton has 7921 states and 11243 transitions. Word has length 123 [2021-11-23 12:36:46,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:36:46,058 INFO L470 AbstractCegarLoop]: Abstraction has 7921 states and 11243 transitions. [2021-11-23 12:36:46,058 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 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 12:36:46,058 INFO L276 IsEmpty]: Start isEmpty. Operand 7921 states and 11243 transitions. [2021-11-23 12:36:46,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-11-23 12:36:46,074 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:36:46,075 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 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, 1, 1] [2021-11-23 12:36:46,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 12:36:46,076 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:36:46,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:36:46,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1345176758, now seen corresponding path program 1 times [2021-11-23 12:36:46,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:36:46,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348294133] [2021-11-23 12:36:46,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:36:46,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:36:46,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:36:46,466 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:36:46,466 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:36:46,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348294133] [2021-11-23 12:36:46,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348294133] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:36:46,467 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:36:46,467 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:36:46,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290622112] [2021-11-23 12:36:46,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:36:46,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:36:46,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:36:46,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:36:46,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:36:46,479 INFO L87 Difference]: Start difference. First operand 7921 states and 11243 transitions. Second operand has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 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 12:36:47,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:36:47,059 INFO L93 Difference]: Finished difference Result 22579 states and 32200 transitions. [2021-11-23 12:36:47,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:36:47,060 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 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 184 [2021-11-23 12:36:47,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:36:47,161 INFO L225 Difference]: With dead ends: 22579 [2021-11-23 12:36:47,161 INFO L226 Difference]: Without dead ends: 14759 [2021-11-23 12:36:47,178 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 12:36:47,179 INFO L933 BasicCegarLoop]: 2928 mSDtfsCounter, 2569 mSDsluCounter, 2792 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2569 SdHoareTripleChecker+Valid, 5720 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:36:47,179 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2569 Valid, 5720 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:36:47,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14759 states. [2021-11-23 12:36:47,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14759 to 14753. [2021-11-23 12:36:47,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14753 states, 14752 states have (on average 1.4280775488069415) internal successors, (21067), 14752 states have internal predecessors, (21067), 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 12:36:47,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14753 states to 14753 states and 21067 transitions. [2021-11-23 12:36:47,733 INFO L78 Accepts]: Start accepts. Automaton has 14753 states and 21067 transitions. Word has length 184 [2021-11-23 12:36:47,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:36:47,734 INFO L470 AbstractCegarLoop]: Abstraction has 14753 states and 21067 transitions. [2021-11-23 12:36:47,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 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 12:36:47,735 INFO L276 IsEmpty]: Start isEmpty. Operand 14753 states and 21067 transitions. [2021-11-23 12:36:47,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2021-11-23 12:36:47,762 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:36:47,762 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 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 12:36:47,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 12:36:47,763 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:36:47,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:36:47,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1333871032, now seen corresponding path program 1 times [2021-11-23 12:36:47,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:36:47,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624867811] [2021-11-23 12:36:47,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:36:47,765 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:36:47,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:36:48,253 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-23 12:36:48,253 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:36:48,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624867811] [2021-11-23 12:36:48,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624867811] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 12:36:48,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [151207611] [2021-11-23 12:36:48,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:36:48,255 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:36:48,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f48ea219-1f5f-4cc1-829d-d8f1ec6e247d/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:36:48,261 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f48ea219-1f5f-4cc1-829d-d8f1ec6e247d/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:36:48,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f48ea219-1f5f-4cc1-829d-d8f1ec6e247d/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 12:36:49,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:36:49,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 4130 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 12:36:49,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:36:49,935 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-23 12:36:49,935 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 12:36:49,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [151207611] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:36:49,936 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 12:36:49,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2021-11-23 12:36:49,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283088827] [2021-11-23 12:36:49,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:36:49,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:36:49,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:36:49,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:36:49,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-23 12:36:49,938 INFO L87 Difference]: Start difference. First operand 14753 states and 21067 transitions. Second operand has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 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 12:36:51,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:36:51,822 INFO L93 Difference]: Finished difference Result 71417 states and 102259 transitions. [2021-11-23 12:36:51,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 12:36:51,823 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 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 224 [2021-11-23 12:36:51,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:36:52,026 INFO L225 Difference]: With dead ends: 71417 [2021-11-23 12:36:52,034 INFO L226 Difference]: Without dead ends: 56765 [2021-11-23 12:36:52,086 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-23 12:36:52,090 INFO L933 BasicCegarLoop]: 5547 mSDtfsCounter, 10300 mSDsluCounter, 10981 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10300 SdHoareTripleChecker+Valid, 16528 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:36:52,090 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10300 Valid, 16528 Invalid, 42 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [13 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:36:52,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56765 states. [2021-11-23 12:36:53,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56765 to 14761. [2021-11-23 12:36:53,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14761 states, 14760 states have (on average 1.4278455284552845) internal successors, (21075), 14760 states have internal predecessors, (21075), 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 12:36:53,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14761 states to 14761 states and 21075 transitions. [2021-11-23 12:36:53,381 INFO L78 Accepts]: Start accepts. Automaton has 14761 states and 21075 transitions. Word has length 224 [2021-11-23 12:36:53,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:36:53,382 INFO L470 AbstractCegarLoop]: Abstraction has 14761 states and 21075 transitions. [2021-11-23 12:36:53,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 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 12:36:53,383 INFO L276 IsEmpty]: Start isEmpty. Operand 14761 states and 21075 transitions. [2021-11-23 12:36:53,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2021-11-23 12:36:53,409 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:36:53,410 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:36:53,456 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f48ea219-1f5f-4cc1-829d-d8f1ec6e247d/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 12:36:53,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f48ea219-1f5f-4cc1-829d-d8f1ec6e247d/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:36:53,632 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:36:53,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:36:53,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1499260141, now seen corresponding path program 1 times [2021-11-23 12:36:53,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:36:53,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830526758] [2021-11-23 12:36:53,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:36:53,633 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:36:53,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:36:54,202 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-23 12:36:54,203 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:36:54,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830526758] [2021-11-23 12:36:54,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830526758] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 12:36:54,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [965830240] [2021-11-23 12:36:54,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:36:54,204 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:36:54,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f48ea219-1f5f-4cc1-829d-d8f1ec6e247d/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:36:54,205 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f48ea219-1f5f-4cc1-829d-d8f1ec6e247d/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:36:54,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f48ea219-1f5f-4cc1-829d-d8f1ec6e247d/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 12:36:55,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:36:55,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 4412 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 12:36:55,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:36:55,978 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-23 12:36:55,979 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 12:36:55,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [965830240] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:36:55,979 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 12:36:55,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2021-11-23 12:36:55,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959477810] [2021-11-23 12:36:55,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:36:55,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:36:55,981 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:36:55,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:36:55,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-23 12:36:55,983 INFO L87 Difference]: Start difference. First operand 14761 states and 21075 transitions. Second operand has 4 states, 4 states have (on average 60.25) internal successors, (241), 4 states have internal predecessors, (241), 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 12:36:59,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:36:59,242 INFO L93 Difference]: Finished difference Result 69585 states and 99431 transitions. [2021-11-23 12:36:59,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 12:36:59,242 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 60.25) internal successors, (241), 4 states have internal predecessors, (241), 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 251 [2021-11-23 12:36:59,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:36:59,462 INFO L225 Difference]: With dead ends: 69585 [2021-11-23 12:36:59,462 INFO L226 Difference]: Without dead ends: 54925 [2021-11-23 12:36:59,507 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-23 12:36:59,508 INFO L933 BasicCegarLoop]: 9804 mSDtfsCounter, 5258 mSDsluCounter, 10312 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5258 SdHoareTripleChecker+Valid, 20116 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-23 12:36:59,509 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5258 Valid, 20116 Invalid, 344 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [62 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-23 12:36:59,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54925 states. [2021-11-23 12:37:00,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54925 to 14777. [2021-11-23 12:37:00,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14777 states, 14776 states have (on average 1.4273822414726585) internal successors, (21091), 14776 states have internal predecessors, (21091), 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 12:37:00,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14777 states to 14777 states and 21091 transitions. [2021-11-23 12:37:00,787 INFO L78 Accepts]: Start accepts. Automaton has 14777 states and 21091 transitions. Word has length 251 [2021-11-23 12:37:00,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:37:00,788 INFO L470 AbstractCegarLoop]: Abstraction has 14777 states and 21091 transitions. [2021-11-23 12:37:00,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.25) internal successors, (241), 4 states have internal predecessors, (241), 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 12:37:00,789 INFO L276 IsEmpty]: Start isEmpty. Operand 14777 states and 21091 transitions. [2021-11-23 12:37:00,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2021-11-23 12:37:00,817 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:37:00,818 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:37:00,865 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f48ea219-1f5f-4cc1-829d-d8f1ec6e247d/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 12:37:01,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f48ea219-1f5f-4cc1-829d-d8f1ec6e247d/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:37:01,032 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:37:01,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:37:01,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1045215145, now seen corresponding path program 1 times [2021-11-23 12:37:01,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:37:01,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512689504] [2021-11-23 12:37:01,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:37:01,033 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:37:01,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:37:01,590 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-23 12:37:01,590 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:37:01,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512689504] [2021-11-23 12:37:01,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512689504] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 12:37:01,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2058052071] [2021-11-23 12:37:01,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:37:01,591 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:37:01,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f48ea219-1f5f-4cc1-829d-d8f1ec6e247d/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:37:01,593 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f48ea219-1f5f-4cc1-829d-d8f1ec6e247d/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:37:01,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f48ea219-1f5f-4cc1-829d-d8f1ec6e247d/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 12:37:02,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:37:02,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 4470 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 12:37:02,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:37:03,353 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-23 12:37:03,353 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 12:37:03,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2058052071] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:37:03,354 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 12:37:03,354 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2021-11-23 12:37:03,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305862793] [2021-11-23 12:37:03,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:37:03,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:37:03,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:37:03,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:37:03,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-23 12:37:03,357 INFO L87 Difference]: Start difference. First operand 14777 states and 21091 transitions. Second operand has 4 states, 4 states have (on average 62.25) internal successors, (249), 4 states have internal predecessors, (249), 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 12:37:05,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:37:05,675 INFO L93 Difference]: Finished difference Result 71693 states and 102575 transitions. [2021-11-23 12:37:05,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 12:37:05,676 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 62.25) internal successors, (249), 4 states have internal predecessors, (249), 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 259 [2021-11-23 12:37:05,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:37:05,824 INFO L225 Difference]: With dead ends: 71693 [2021-11-23 12:37:05,824 INFO L226 Difference]: Without dead ends: 57017 [2021-11-23 12:37:05,858 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 259 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-23 12:37:05,859 INFO L933 BasicCegarLoop]: 10678 mSDtfsCounter, 5279 mSDsluCounter, 10970 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5279 SdHoareTripleChecker+Valid, 21648 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 12:37:05,860 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5279 Valid, 21648 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 12:37:05,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57017 states. [2021-11-23 12:37:06,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57017 to 14785. [2021-11-23 12:37:07,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14785 states, 14784 states have (on average 1.427150974025974) internal successors, (21099), 14784 states have internal predecessors, (21099), 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 12:37:07,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14785 states to 14785 states and 21099 transitions. [2021-11-23 12:37:07,047 INFO L78 Accepts]: Start accepts. Automaton has 14785 states and 21099 transitions. Word has length 259 [2021-11-23 12:37:07,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:37:07,048 INFO L470 AbstractCegarLoop]: Abstraction has 14785 states and 21099 transitions. [2021-11-23 12:37:07,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 62.25) internal successors, (249), 4 states have internal predecessors, (249), 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 12:37:07,049 INFO L276 IsEmpty]: Start isEmpty. Operand 14785 states and 21099 transitions. [2021-11-23 12:37:07,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2021-11-23 12:37:07,146 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:37:07,146 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:37:07,197 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f48ea219-1f5f-4cc1-829d-d8f1ec6e247d/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-23 12:37:07,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f48ea219-1f5f-4cc1-829d-d8f1ec6e247d/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:37:07,364 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:37:07,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:37:07,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1009622800, now seen corresponding path program 1 times [2021-11-23 12:37:07,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:37:07,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589477852] [2021-11-23 12:37:07,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:37:07,366 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:37:07,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:37:08,165 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-23 12:37:08,166 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:37:08,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589477852] [2021-11-23 12:37:08,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589477852] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 12:37:08,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330734858] [2021-11-23 12:37:08,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:37:08,167 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:37:08,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f48ea219-1f5f-4cc1-829d-d8f1ec6e247d/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:37:08,172 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f48ea219-1f5f-4cc1-829d-d8f1ec6e247d/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:37:08,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f48ea219-1f5f-4cc1-829d-d8f1ec6e247d/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-23 12:37:09,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:37:09,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 4500 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 12:37:09,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:37:10,226 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-23 12:37:10,226 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 12:37:10,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1330734858] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:37:10,227 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 12:37:10,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2021-11-23 12:37:10,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138539623] [2021-11-23 12:37:10,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:37:10,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:37:10,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:37:10,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:37:10,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:37:10,229 INFO L87 Difference]: Start difference. First operand 14785 states and 21099 transitions. Second operand has 4 states, 4 states have (on average 62.75) internal successors, (251), 4 states have internal predecessors, (251), 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 12:37:12,285 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 12:37:14,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:37:14,194 INFO L93 Difference]: Finished difference Result 44155 states and 63060 transitions. [2021-11-23 12:37:14,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:37:14,195 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 62.75) internal successors, (251), 4 states have internal predecessors, (251), 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 261 [2021-11-23 12:37:14,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:37:14,296 INFO L225 Difference]: With dead ends: 44155 [2021-11-23 12:37:14,296 INFO L226 Difference]: Without dead ends: 44149 [2021-11-23 12:37:14,315 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:37:14,316 INFO L933 BasicCegarLoop]: 5691 mSDtfsCounter, 5434 mSDsluCounter, 5808 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5434 SdHoareTripleChecker+Valid, 11499 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-23 12:37:14,316 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5434 Valid, 11499 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 55 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2021-11-23 12:37:14,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44149 states. [2021-11-23 12:37:16,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44149 to 43709. [2021-11-23 12:37:16,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43709 states, 43708 states have (on average 1.4297382630182118) internal successors, (62491), 43708 states have internal predecessors, (62491), 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 12:37:16,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43709 states to 43709 states and 62491 transitions. [2021-11-23 12:37:16,366 INFO L78 Accepts]: Start accepts. Automaton has 43709 states and 62491 transitions. Word has length 261 [2021-11-23 12:37:16,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:37:16,367 INFO L470 AbstractCegarLoop]: Abstraction has 43709 states and 62491 transitions. [2021-11-23 12:37:16,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 62.75) internal successors, (251), 4 states have internal predecessors, (251), 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 12:37:16,368 INFO L276 IsEmpty]: Start isEmpty. Operand 43709 states and 62491 transitions. [2021-11-23 12:37:16,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2021-11-23 12:37:16,426 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:37:16,426 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:37:16,478 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f48ea219-1f5f-4cc1-829d-d8f1ec6e247d/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-23 12:37:16,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f48ea219-1f5f-4cc1-829d-d8f1ec6e247d/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-11-23 12:37:16,652 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:37:16,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:37:16,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1827271250, now seen corresponding path program 1 times [2021-11-23 12:37:16,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:37:16,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30812249] [2021-11-23 12:37:16,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:37:16,653 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:37:16,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:37:17,266 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-23 12:37:17,267 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:37:17,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30812249] [2021-11-23 12:37:17,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30812249] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:37:17,267 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:37:17,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 12:37:17,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485648610] [2021-11-23 12:37:17,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:37:17,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 12:37:17,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:37:17,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 12:37:17,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-23 12:37:17,270 INFO L87 Difference]: Start difference. First operand 43709 states and 62491 transitions. Second operand has 7 states, 7 states have (on average 35.857142857142854) internal successors, (251), 7 states have internal predecessors, (251), 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 12:37:29,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:37:29,605 INFO L93 Difference]: Finished difference Result 298733 states and 427963 transitions. [2021-11-23 12:37:29,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 12:37:29,605 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 35.857142857142854) internal successors, (251), 7 states have internal predecessors, (251), 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 261 [2021-11-23 12:37:29,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:37:30,349 INFO L225 Difference]: With dead ends: 298733 [2021-11-23 12:37:30,350 INFO L226 Difference]: Without dead ends: 255125 [2021-11-23 12:37:30,456 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-11-23 12:37:30,457 INFO L933 BasicCegarLoop]: 8301 mSDtfsCounter, 24292 mSDsluCounter, 40892 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24292 SdHoareTripleChecker+Valid, 49193 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 12:37:30,457 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24292 Valid, 49193 Invalid, 98 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 12:37:30,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255125 states. [2021-11-23 12:37:34,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255125 to 43769. [2021-11-23 12:37:34,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43769 states, 43768 states have (on average 1.42942332297569) internal successors, (62563), 43768 states have internal predecessors, (62563), 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 12:37:35,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43769 states to 43769 states and 62563 transitions. [2021-11-23 12:37:35,008 INFO L78 Accepts]: Start accepts. Automaton has 43769 states and 62563 transitions. Word has length 261 [2021-11-23 12:37:35,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:37:35,009 INFO L470 AbstractCegarLoop]: Abstraction has 43769 states and 62563 transitions. [2021-11-23 12:37:35,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 35.857142857142854) internal successors, (251), 7 states have internal predecessors, (251), 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 12:37:35,009 INFO L276 IsEmpty]: Start isEmpty. Operand 43769 states and 62563 transitions. [2021-11-23 12:37:35,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2021-11-23 12:37:35,043 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:37:35,044 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:37:35,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-23 12:37:35,044 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:37:35,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:37:35,045 INFO L85 PathProgramCache]: Analyzing trace with hash 418308204, now seen corresponding path program 1 times [2021-11-23 12:37:35,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:37:35,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339032571] [2021-11-23 12:37:35,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:37:35,046 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:37:35,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:37:35,928 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-23 12:37:35,928 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:37:35,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339032571] [2021-11-23 12:37:35,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339032571] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:37:35,929 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:37:35,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 12:37:35,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970839074] [2021-11-23 12:37:35,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:37:35,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 12:37:35,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:37:35,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 12:37:35,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:37:35,932 INFO L87 Difference]: Start difference. First operand 43769 states and 62563 transitions. Second operand has 5 states, 5 states have (on average 50.2) internal successors, (251), 5 states have internal predecessors, (251), 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)