./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--scsi--st.ko-ldv_main0.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b2fefad-9ba1-41dd-818d-6cbd4901dbc4/bin/uautomizer-tBqnrhUYjU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b2fefad-9ba1-41dd-818d-6cbd4901dbc4/bin/uautomizer-tBqnrhUYjU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b2fefad-9ba1-41dd-818d-6cbd4901dbc4/bin/uautomizer-tBqnrhUYjU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b2fefad-9ba1-41dd-818d-6cbd4901dbc4/bin/uautomizer-tBqnrhUYjU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--scsi--st.ko-ldv_main0.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b2fefad-9ba1-41dd-818d-6cbd4901dbc4/bin/uautomizer-tBqnrhUYjU/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b2fefad-9ba1-41dd-818d-6cbd4901dbc4/bin/uautomizer-tBqnrhUYjU --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 2eef4809e0fb5b801f2479dfde07a6f5e1ac3784201f878d167f0654e03bdeae --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-02 22:05:27,014 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 22:05:27,018 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 22:05:27,071 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 22:05:27,072 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 22:05:27,074 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 22:05:27,076 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 22:05:27,078 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 22:05:27,081 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 22:05:27,082 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 22:05:27,083 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 22:05:27,085 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 22:05:27,086 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 22:05:27,087 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 22:05:27,089 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 22:05:27,091 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 22:05:27,092 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 22:05:27,094 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 22:05:27,097 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 22:05:27,100 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 22:05:27,102 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 22:05:27,104 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 22:05:27,105 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 22:05:27,107 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 22:05:27,111 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 22:05:27,111 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 22:05:27,112 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 22:05:27,113 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 22:05:27,114 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 22:05:27,115 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 22:05:27,116 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 22:05:27,117 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 22:05:27,118 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 22:05:27,120 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 22:05:27,121 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 22:05:27,122 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 22:05:27,123 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 22:05:27,123 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 22:05:27,124 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 22:05:27,125 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 22:05:27,126 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 22:05:27,127 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b2fefad-9ba1-41dd-818d-6cbd4901dbc4/bin/uautomizer-tBqnrhUYjU/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-02 22:05:27,153 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 22:05:27,153 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 22:05:27,153 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 22:05:27,154 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 22:05:27,155 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 22:05:27,155 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 22:05:27,156 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 22:05:27,156 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 22:05:27,156 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 22:05:27,156 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 22:05:27,157 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 22:05:27,157 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 22:05:27,157 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 22:05:27,158 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 22:05:27,158 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 22:05:27,158 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 22:05:27,158 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 22:05:27,159 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 22:05:27,159 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 22:05:27,159 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:05:27,160 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 22:05:27,160 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 22:05:27,160 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 22:05:27,160 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 22:05:27,161 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 22:05:27,161 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 22:05:27,161 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 22:05:27,161 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 22:05:27,162 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 22:05:27,162 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_8b2fefad-9ba1-41dd-818d-6cbd4901dbc4/bin/uautomizer-tBqnrhUYjU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b2fefad-9ba1-41dd-818d-6cbd4901dbc4/bin/uautomizer-tBqnrhUYjU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2eef4809e0fb5b801f2479dfde07a6f5e1ac3784201f878d167f0654e03bdeae [2021-11-02 22:05:27,439 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 22:05:27,475 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 22:05:27,477 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 22:05:27,479 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 22:05:27,481 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 22:05:27,482 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b2fefad-9ba1-41dd-818d-6cbd4901dbc4/bin/uautomizer-tBqnrhUYjU/../../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--scsi--st.ko-ldv_main0.cil.out.i [2021-11-02 22:05:27,562 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b2fefad-9ba1-41dd-818d-6cbd4901dbc4/bin/uautomizer-tBqnrhUYjU/data/0c087cb50/3ad39631f8c44d0dac8d86b2f4923049/FLAG6181f72da [2021-11-02 22:05:28,568 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 22:05:28,569 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b2fefad-9ba1-41dd-818d-6cbd4901dbc4/sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--scsi--st.ko-ldv_main0.cil.out.i [2021-11-02 22:05:28,633 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b2fefad-9ba1-41dd-818d-6cbd4901dbc4/bin/uautomizer-tBqnrhUYjU/data/0c087cb50/3ad39631f8c44d0dac8d86b2f4923049/FLAG6181f72da [2021-11-02 22:05:28,988 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b2fefad-9ba1-41dd-818d-6cbd4901dbc4/bin/uautomizer-tBqnrhUYjU/data/0c087cb50/3ad39631f8c44d0dac8d86b2f4923049 [2021-11-02 22:05:28,991 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 22:05:28,992 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 22:05:28,994 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 22:05:28,995 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 22:05:29,002 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 22:05:29,004 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:05:28" (1/1) ... [2021-11-02 22:05:29,005 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17170c81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:05:29, skipping insertion in model container [2021-11-02 22:05:29,023 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:05:28" (1/1) ... [2021-11-02 22:05:29,031 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 22:05:29,164 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 22:05:31,535 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b2fefad-9ba1-41dd-818d-6cbd4901dbc4/sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--scsi--st.ko-ldv_main0.cil.out.i[269371,269384] [2021-11-02 22:05:31,670 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:05:31,718 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 22:05:32,266 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b2fefad-9ba1-41dd-818d-6cbd4901dbc4/sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--scsi--st.ko-ldv_main0.cil.out.i[269371,269384] [2021-11-02 22:05:32,284 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:05:32,398 INFO L208 MainTranslator]: Completed translation [2021-11-02 22:05:32,398 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:05:32 WrapperNode [2021-11-02 22:05:32,398 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 22:05:32,401 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 22:05:32,401 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 22:05:32,401 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 22:05:32,409 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:05:32" (1/1) ... [2021-11-02 22:05:32,561 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:05:32" (1/1) ... [2021-11-02 22:05:34,623 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 22:05:34,624 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 22:05:34,625 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 22:05:34,625 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 22:05:34,634 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:05:32" (1/1) ... [2021-11-02 22:05:34,634 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:05:32" (1/1) ... [2021-11-02 22:05:35,297 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:05:32" (1/1) ... [2021-11-02 22:05:35,297 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:05:32" (1/1) ... [2021-11-02 22:05:36,956 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:05:32" (1/1) ... [2021-11-02 22:05:37,492 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:05:32" (1/1) ... [2021-11-02 22:05:37,828 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:05:32" (1/1) ... [2021-11-02 22:05:38,397 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 22:05:38,414 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 22:05:38,415 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 22:05:38,416 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 22:05:38,418 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:05:32" (1/1) ... [2021-11-02 22:05:38,431 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:05:38,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b2fefad-9ba1-41dd-818d-6cbd4901dbc4/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:05:38,488 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b2fefad-9ba1-41dd-818d-6cbd4901dbc4/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-02 22:05:38,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b2fefad-9ba1-41dd-818d-6cbd4901dbc4/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-02 22:05:38,642 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-02 22:05:38,642 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-02 22:05:38,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-02 22:05:38,643 INFO L130 BoogieDeclarations]: Found specification of procedure st_int_ioctl [2021-11-02 22:05:38,643 INFO L138 BoogieDeclarations]: Found implementation of procedure st_int_ioctl [2021-11-02 22:05:38,643 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 22:05:38,644 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-02 22:05:38,644 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-11-02 22:05:38,644 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 22:05:38,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-02 22:05:38,644 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-02 22:05:38,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-02 22:05:38,644 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-02 22:05:38,645 INFO L130 BoogieDeclarations]: Found specification of procedure enlarge_buffer [2021-11-02 22:05:38,645 INFO L138 BoogieDeclarations]: Found implementation of procedure enlarge_buffer [2021-11-02 22:05:38,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-02 22:05:38,645 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 22:05:38,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 22:05:38,645 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-02 22:05:38,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 22:05:38,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 22:05:38,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 22:06:41,907 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 22:06:41,907 INFO L299 CfgBuilder]: Removed 7466 assume(true) statements. [2021-11-02 22:06:41,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:06:41 BoogieIcfgContainer [2021-11-02 22:06:41,921 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 22:06:41,923 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 22:06:41,923 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 22:06:41,927 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 22:06:41,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 10:05:28" (1/3) ... [2021-11-02 22:06:41,928 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@174be6ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:06:41, skipping insertion in model container [2021-11-02 22:06:41,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:05:32" (2/3) ... [2021-11-02 22:06:41,929 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@174be6ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:06:41, skipping insertion in model container [2021-11-02 22:06:41,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:06:41" (3/3) ... [2021-11-02 22:06:41,931 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.8-rc1-32_7a-drivers--scsi--st.ko-ldv_main0.cil.out.i [2021-11-02 22:06:41,937 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 22:06:41,937 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 21 error locations. [2021-11-02 22:06:42,036 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 22:06:42,043 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 [2021-11-02 22:06:42,044 INFO L340 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2021-11-02 22:06:42,226 INFO L276 IsEmpty]: Start isEmpty. Operand has 11083 states, 11030 states have (on average 1.4948322756119674) internal successors, (16488), 11051 states have internal predecessors, (16488), 29 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2021-11-02 22:06:42,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-02 22:06:42,230 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:06:42,231 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:06:42,232 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2021-11-02 22:06:42,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:06:42,237 INFO L85 PathProgramCache]: Analyzing trace with hash -576168751, now seen corresponding path program 1 times [2021-11-02 22:06:42,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:06:42,246 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331277611] [2021-11-02 22:06:42,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:06:42,247 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:06:42,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:06:42,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:06:42,973 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:06:42,974 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331277611] [2021-11-02 22:06:42,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331277611] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:06:42,976 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:06:42,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 22:06:42,979 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256780688] [2021-11-02 22:06:42,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:06:42,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:06:43,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:06:43,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:06:43,043 INFO L87 Difference]: Start difference. First operand has 11083 states, 11030 states have (on average 1.4948322756119674) internal successors, (16488), 11051 states have internal predecessors, (16488), 29 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 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) [2021-11-02 22:06:43,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:06:43,813 INFO L93 Difference]: Finished difference Result 22162 states and 33116 transitions. [2021-11-02 22:06:43,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:06:43,815 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 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 12 [2021-11-02 22:06:43,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:06:43,922 INFO L225 Difference]: With dead ends: 22162 [2021-11-02 22:06:43,922 INFO L226 Difference]: Without dead ends: 11079 [2021-11-02 22:06:44,158 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:06:44,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11079 states. [2021-11-02 22:06:44,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11079 to 11079. [2021-11-02 22:06:44,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11079 states, 11027 states have (on average 1.4746531241498142) internal successors, (16261), 11047 states have internal predecessors, (16261), 29 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2021-11-02 22:06:44,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11079 states to 11079 states and 16319 transitions. [2021-11-02 22:06:44,701 INFO L78 Accepts]: Start accepts. Automaton has 11079 states and 16319 transitions. Word has length 12 [2021-11-02 22:06:44,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:06:44,702 INFO L470 AbstractCegarLoop]: Abstraction has 11079 states and 16319 transitions. [2021-11-02 22:06:44,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 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) [2021-11-02 22:06:44,703 INFO L276 IsEmpty]: Start isEmpty. Operand 11079 states and 16319 transitions. [2021-11-02 22:06:44,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-02 22:06:44,704 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:06:44,704 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:06:44,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 22:06:44,705 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2021-11-02 22:06:44,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:06:44,706 INFO L85 PathProgramCache]: Analyzing trace with hash 103889619, now seen corresponding path program 1 times [2021-11-02 22:06:44,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:06:44,707 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223109732] [2021-11-02 22:06:44,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:06:44,707 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:06:44,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:06:44,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:06:44,956 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:06:44,956 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223109732] [2021-11-02 22:06:44,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223109732] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:06:44,956 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:06:44,958 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:06:44,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398724668] [2021-11-02 22:06:44,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:06:44,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:06:44,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:06:44,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:06:44,962 INFO L87 Difference]: Start difference. First operand 11079 states and 16319 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2021-11-02 22:06:47,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:06:47,609 INFO L93 Difference]: Finished difference Result 11079 states and 16319 transitions. [2021-11-02 22:06:47,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:06:47,610 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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 12 [2021-11-02 22:06:47,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:06:47,693 INFO L225 Difference]: With dead ends: 11079 [2021-11-02 22:06:47,694 INFO L226 Difference]: Without dead ends: 11077 [2021-11-02 22:06:47,701 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:06:47,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11077 states. [2021-11-02 22:06:48,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11077 to 11077. [2021-11-02 22:06:48,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11077 states, 11026 states have (on average 1.4746054779611826) internal successors, (16259), 11045 states have internal predecessors, (16259), 29 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2021-11-02 22:06:48,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11077 states to 11077 states and 16317 transitions. [2021-11-02 22:06:48,364 INFO L78 Accepts]: Start accepts. Automaton has 11077 states and 16317 transitions. Word has length 12 [2021-11-02 22:06:48,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:06:48,364 INFO L470 AbstractCegarLoop]: Abstraction has 11077 states and 16317 transitions. [2021-11-02 22:06:48,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2021-11-02 22:06:48,366 INFO L276 IsEmpty]: Start isEmpty. Operand 11077 states and 16317 transitions. [2021-11-02 22:06:48,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-02 22:06:48,369 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:06:48,369 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:06:48,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 22:06:48,370 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2021-11-02 22:06:48,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:06:48,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1074350623, now seen corresponding path program 1 times [2021-11-02 22:06:48,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:06:48,373 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496677619] [2021-11-02 22:06:48,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:06:48,380 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:06:48,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:06:48,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:06:48,667 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:06:48,668 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496677619] [2021-11-02 22:06:48,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496677619] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:06:48,669 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:06:48,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:06:48,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586883326] [2021-11-02 22:06:48,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:06:48,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:06:48,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:06:48,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:06:48,672 INFO L87 Difference]: Start difference. First operand 11077 states and 16317 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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) [2021-11-02 22:06:51,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:06:51,808 INFO L93 Difference]: Finished difference Result 33119 states and 48813 transitions. [2021-11-02 22:06:51,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:06:51,808 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 13 [2021-11-02 22:06:51,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:06:51,919 INFO L225 Difference]: With dead ends: 33119 [2021-11-02 22:06:51,919 INFO L226 Difference]: Without dead ends: 22074 [2021-11-02 22:06:51,952 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:06:51,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22074 states. [2021-11-02 22:06:52,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22074 to 22046. [2021-11-02 22:06:52,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22046 states, 21964 states have (on average 1.4751411400473502) internal successors, (32400), 21983 states have internal predecessors, (32400), 58 states have call successors, (58), 4 states have call predecessors, (58), 4 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2021-11-02 22:06:52,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22046 states to 22046 states and 32516 transitions. [2021-11-02 22:06:52,892 INFO L78 Accepts]: Start accepts. Automaton has 22046 states and 32516 transitions. Word has length 13 [2021-11-02 22:06:52,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:06:52,892 INFO L470 AbstractCegarLoop]: Abstraction has 22046 states and 32516 transitions. [2021-11-02 22:06:52,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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) [2021-11-02 22:06:52,893 INFO L276 IsEmpty]: Start isEmpty. Operand 22046 states and 32516 transitions. [2021-11-02 22:06:52,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-02 22:06:52,894 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:06:52,894 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:06:52,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-02 22:06:52,895 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2021-11-02 22:06:52,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:06:52,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1054907549, now seen corresponding path program 1 times [2021-11-02 22:06:52,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:06:52,897 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611479441] [2021-11-02 22:06:52,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:06:52,897 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:06:53,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:06:53,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:06:53,166 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:06:53,171 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611479441] [2021-11-02 22:06:53,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611479441] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:06:53,172 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:06:53,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:06:53,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901388244] [2021-11-02 22:06:53,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:06:53,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:06:53,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:06:53,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:06:53,175 INFO L87 Difference]: Start difference. First operand 22046 states and 32516 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2021-11-02 22:06:55,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:06:55,986 INFO L93 Difference]: Finished difference Result 22046 states and 32516 transitions. [2021-11-02 22:06:55,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:06:55,986 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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 14 [2021-11-02 22:06:55,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:06:56,065 INFO L225 Difference]: With dead ends: 22046 [2021-11-02 22:06:56,066 INFO L226 Difference]: Without dead ends: 22044 [2021-11-02 22:06:56,075 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:06:56,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22044 states. [2021-11-02 22:06:56,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22044 to 22044. [2021-11-02 22:06:56,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22044 states, 21963 states have (on average 1.4751172426353412) internal successors, (32398), 21981 states have internal predecessors, (32398), 58 states have call successors, (58), 4 states have call predecessors, (58), 4 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2021-11-02 22:06:56,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22044 states to 22044 states and 32514 transitions. [2021-11-02 22:06:56,900 INFO L78 Accepts]: Start accepts. Automaton has 22044 states and 32514 transitions. Word has length 14 [2021-11-02 22:06:56,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:06:56,901 INFO L470 AbstractCegarLoop]: Abstraction has 22044 states and 32514 transitions. [2021-11-02 22:06:56,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2021-11-02 22:06:56,901 INFO L276 IsEmpty]: Start isEmpty. Operand 22044 states and 32514 transitions. [2021-11-02 22:06:56,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-02 22:06:56,903 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:06:56,903 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:06:56,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-02 22:06:56,903 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2021-11-02 22:06:56,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:06:56,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1657565845, now seen corresponding path program 1 times [2021-11-02 22:06:56,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:06:56,905 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168915217] [2021-11-02 22:06:56,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:06:56,906 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:06:57,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:06:57,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:06:57,145 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:06:57,146 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168915217] [2021-11-02 22:06:57,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168915217] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:06:57,146 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:06:57,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:06:57,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569144041] [2021-11-02 22:06:57,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:06:57,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:06:57,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:06:57,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:06:57,149 INFO L87 Difference]: Start difference. First operand 22044 states and 32514 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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) [2021-11-02 22:06:59,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:06:59,896 INFO L93 Difference]: Finished difference Result 22044 states and 32514 transitions. [2021-11-02 22:06:59,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:06:59,897 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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 15 [2021-11-02 22:06:59,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:06:59,966 INFO L225 Difference]: With dead ends: 22044 [2021-11-02 22:06:59,967 INFO L226 Difference]: Without dead ends: 22020 [2021-11-02 22:06:59,977 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:07:00,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22020 states. [2021-11-02 22:07:00,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22020 to 22020. [2021-11-02 22:07:00,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22020 states, 21945 states have (on average 1.4747322852586011) internal successors, (32363), 21957 states have internal predecessors, (32363), 58 states have call successors, (58), 4 states have call predecessors, (58), 4 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2021-11-02 22:07:00,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22020 states to 22020 states and 32479 transitions. [2021-11-02 22:07:00,826 INFO L78 Accepts]: Start accepts. Automaton has 22020 states and 32479 transitions. Word has length 15 [2021-11-02 22:07:00,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:07:00,827 INFO L470 AbstractCegarLoop]: Abstraction has 22020 states and 32479 transitions. [2021-11-02 22:07:00,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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) [2021-11-02 22:07:00,828 INFO L276 IsEmpty]: Start isEmpty. Operand 22020 states and 32479 transitions. [2021-11-02 22:07:00,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-02 22:07:00,838 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:07:00,838 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:07:00,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-02 22:07:00,839 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2021-11-02 22:07:00,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:07:00,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1462807932, now seen corresponding path program 1 times [2021-11-02 22:07:00,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:07:00,840 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755540841] [2021-11-02 22:07:00,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:07:00,840 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:07:00,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:07:01,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:07:01,284 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:07:01,287 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755540841] [2021-11-02 22:07:01,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755540841] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:07:01,288 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:07:01,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 22:07:01,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176174414] [2021-11-02 22:07:01,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:07:01,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:07:01,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:07:01,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:07:01,291 INFO L87 Difference]: Start difference. First operand 22020 states and 32479 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 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) [2021-11-02 22:07:03,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:07:03,344 INFO L93 Difference]: Finished difference Result 38803 states and 56946 transitions. [2021-11-02 22:07:03,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 22:07:03,345 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 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 35 [2021-11-02 22:07:03,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:07:03,448 INFO L225 Difference]: With dead ends: 38803 [2021-11-02 22:07:03,449 INFO L226 Difference]: Without dead ends: 33397 [2021-11-02 22:07:03,471 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-02 22:07:03,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33397 states. [2021-11-02 22:07:04,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33397 to 16903. [2021-11-02 22:07:04,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16903 states, 16840 states have (on average 1.4722684085510689) internal successors, (24793), 16852 states have internal predecessors, (24793), 46 states have call successors, (46), 4 states have call predecessors, (46), 4 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2021-11-02 22:07:04,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16903 states to 16903 states and 24885 transitions. [2021-11-02 22:07:04,399 INFO L78 Accepts]: Start accepts. Automaton has 16903 states and 24885 transitions. Word has length 35 [2021-11-02 22:07:04,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:07:04,399 INFO L470 AbstractCegarLoop]: Abstraction has 16903 states and 24885 transitions. [2021-11-02 22:07:04,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 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) [2021-11-02 22:07:04,400 INFO L276 IsEmpty]: Start isEmpty. Operand 16903 states and 24885 transitions. [2021-11-02 22:07:04,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-02 22:07:04,402 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:07:04,402 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:07:04,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-02 22:07:04,403 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2021-11-02 22:07:04,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:07:04,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1855834942, now seen corresponding path program 1 times [2021-11-02 22:07:04,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:07:04,404 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452446726] [2021-11-02 22:07:04,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:07:04,405 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:07:04,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:07:04,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:07:04,691 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:07:04,691 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452446726] [2021-11-02 22:07:04,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452446726] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:07:04,691 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:07:04,692 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:07:04,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334682677] [2021-11-02 22:07:04,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:07:04,693 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:07:04,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:07:04,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:07:04,694 INFO L87 Difference]: Start difference. First operand 16903 states and 24885 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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) [2021-11-02 22:07:07,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:07:07,886 INFO L93 Difference]: Finished difference Result 33780 states and 49732 transitions. [2021-11-02 22:07:07,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:07:07,887 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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 35 [2021-11-02 22:07:07,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:07:07,951 INFO L225 Difference]: With dead ends: 33780 [2021-11-02 22:07:07,952 INFO L226 Difference]: Without dead ends: 16909 [2021-11-02 22:07:08,000 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:07:08,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16909 states. [2021-11-02 22:07:08,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16909 to 16899. [2021-11-02 22:07:08,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16899 states, 16838 states have (on average 1.47190877776458) internal successors, (24784), 16848 states have internal predecessors, (24784), 46 states have call successors, (46), 4 states have call predecessors, (46), 4 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2021-11-02 22:07:08,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16899 states to 16899 states and 24876 transitions. [2021-11-02 22:07:08,898 INFO L78 Accepts]: Start accepts. Automaton has 16899 states and 24876 transitions. Word has length 35 [2021-11-02 22:07:08,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:07:08,899 INFO L470 AbstractCegarLoop]: Abstraction has 16899 states and 24876 transitions. [2021-11-02 22:07:08,899 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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) [2021-11-02 22:07:08,900 INFO L276 IsEmpty]: Start isEmpty. Operand 16899 states and 24876 transitions. [2021-11-02 22:07:08,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-02 22:07:08,905 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:07:08,905 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:07:08,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-02 22:07:08,905 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2021-11-02 22:07:08,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:07:08,906 INFO L85 PathProgramCache]: Analyzing trace with hash 84168741, now seen corresponding path program 1 times [2021-11-02 22:07:08,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:07:08,907 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995901468] [2021-11-02 22:07:08,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:07:08,907 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:07:09,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:07:09,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:07:09,204 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:07:09,204 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995901468] [2021-11-02 22:07:09,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995901468] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:07:09,205 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:07:09,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:07:09,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119129956] [2021-11-02 22:07:09,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:07:09,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:07:09,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:07:09,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:07:09,207 INFO L87 Difference]: Start difference. First operand 16899 states and 24876 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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) [2021-11-02 22:07:10,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:07:10,339 INFO L93 Difference]: Finished difference Result 42657 states and 62783 transitions. [2021-11-02 22:07:10,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:07:10,342 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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 37 [2021-11-02 22:07:10,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:07:10,438 INFO L225 Difference]: With dead ends: 42657 [2021-11-02 22:07:10,438 INFO L226 Difference]: Without dead ends: 25790 [2021-11-02 22:07:10,466 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:07:10,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25790 states. [2021-11-02 22:07:11,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25790 to 25770. [2021-11-02 22:07:11,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25770 states, 25693 states have (on average 1.4711789203284942) internal successors, (37799), 25703 states have internal predecessors, (37799), 62 states have call successors, (62), 4 states have call predecessors, (62), 4 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2021-11-02 22:07:11,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25770 states to 25770 states and 37923 transitions. [2021-11-02 22:07:11,865 INFO L78 Accepts]: Start accepts. Automaton has 25770 states and 37923 transitions. Word has length 37 [2021-11-02 22:07:11,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:07:11,866 INFO L470 AbstractCegarLoop]: Abstraction has 25770 states and 37923 transitions. [2021-11-02 22:07:11,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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) [2021-11-02 22:07:11,866 INFO L276 IsEmpty]: Start isEmpty. Operand 25770 states and 37923 transitions. [2021-11-02 22:07:11,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-02 22:07:11,868 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:07:11,868 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:07:11,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-02 22:07:11,869 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2021-11-02 22:07:11,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:07:11,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1675455204, now seen corresponding path program 1 times [2021-11-02 22:07:11,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:07:11,870 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248577454] [2021-11-02 22:07:11,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:07:11,870 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:07:11,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:07:12,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:07:12,117 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:07:12,117 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248577454] [2021-11-02 22:07:12,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248577454] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:07:12,117 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:07:12,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:07:12,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717530728] [2021-11-02 22:07:12,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:07:12,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:07:12,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:07:12,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:07:12,124 INFO L87 Difference]: Start difference. First operand 25770 states and 37923 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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) [2021-11-02 22:07:14,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:07:14,012 INFO L93 Difference]: Finished difference Result 75730 states and 111574 transitions. [2021-11-02 22:07:14,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:07:14,013 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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 38 [2021-11-02 22:07:14,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:07:14,166 INFO L225 Difference]: With dead ends: 75730 [2021-11-02 22:07:14,167 INFO L226 Difference]: Without dead ends: 49992 [2021-11-02 22:07:14,212 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:07:14,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49992 states. [2021-11-02 22:07:15,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49992 to 47153. [2021-11-02 22:07:15,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47153 states, 47031 states have (on average 1.472900852629117) internal successors, (69272), 47041 states have internal predecessors, (69272), 107 states have call successors, (107), 4 states have call predecessors, (107), 4 states have return successors, (107), 107 states have call predecessors, (107), 107 states have call successors, (107) [2021-11-02 22:07:16,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47153 states to 47153 states and 69486 transitions. [2021-11-02 22:07:16,253 INFO L78 Accepts]: Start accepts. Automaton has 47153 states and 69486 transitions. Word has length 38 [2021-11-02 22:07:16,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:07:16,253 INFO L470 AbstractCegarLoop]: Abstraction has 47153 states and 69486 transitions. [2021-11-02 22:07:16,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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) [2021-11-02 22:07:16,254 INFO L276 IsEmpty]: Start isEmpty. Operand 47153 states and 69486 transitions. [2021-11-02 22:07:16,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-02 22:07:16,263 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:07:16,263 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:07:16,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-02 22:07:16,265 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2021-11-02 22:07:16,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:07:16,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1335611205, now seen corresponding path program 1 times [2021-11-02 22:07:16,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:07:16,271 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555004467] [2021-11-02 22:07:16,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:07:16,271 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:07:16,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:07:16,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:07:16,545 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:07:16,545 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555004467] [2021-11-02 22:07:16,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555004467] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:07:16,546 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:07:16,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:07:16,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10841536] [2021-11-02 22:07:16,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:07:16,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:07:16,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:07:16,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:07:16,548 INFO L87 Difference]: Start difference. First operand 47153 states and 69486 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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) [2021-11-02 22:07:20,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:07:20,129 INFO L93 Difference]: Finished difference Result 47153 states and 69486 transitions. [2021-11-02 22:07:20,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:07:20,130 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 39 [2021-11-02 22:07:20,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:07:20,232 INFO L225 Difference]: With dead ends: 47153 [2021-11-02 22:07:20,232 INFO L226 Difference]: Without dead ends: 47143 [2021-11-02 22:07:20,243 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:07:20,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47143 states. [2021-11-02 22:07:21,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47143 to 47143. [2021-11-02 22:07:21,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47143 states, 47026 states have (on average 1.4725258367711478) internal successors, (69247), 47031 states have internal predecessors, (69247), 107 states have call successors, (107), 4 states have call predecessors, (107), 4 states have return successors, (107), 107 states have call predecessors, (107), 107 states have call successors, (107) [2021-11-02 22:07:21,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47143 states to 47143 states and 69461 transitions. [2021-11-02 22:07:21,894 INFO L78 Accepts]: Start accepts. Automaton has 47143 states and 69461 transitions. Word has length 39 [2021-11-02 22:07:21,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:07:21,895 INFO L470 AbstractCegarLoop]: Abstraction has 47143 states and 69461 transitions. [2021-11-02 22:07:21,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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) [2021-11-02 22:07:21,895 INFO L276 IsEmpty]: Start isEmpty. Operand 47143 states and 69461 transitions. [2021-11-02 22:07:21,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-02 22:07:21,898 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:07:21,898 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:07:21,898 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-02 22:07:21,899 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2021-11-02 22:07:21,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:07:21,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1117073061, now seen corresponding path program 1 times [2021-11-02 22:07:21,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:07:21,900 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422740288] [2021-11-02 22:07:21,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:07:21,900 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:07:21,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:07:22,106 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:07:22,106 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:07:22,106 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422740288] [2021-11-02 22:07:22,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422740288] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:07:22,107 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:07:22,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 22:07:22,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884393418] [2021-11-02 22:07:22,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:07:22,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:07:22,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:07:22,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:07:22,109 INFO L87 Difference]: Start difference. First operand 47143 states and 69461 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:07:26,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:07:26,024 INFO L93 Difference]: Finished difference Result 99424 states and 145784 transitions. [2021-11-02 22:07:26,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 22:07:26,025 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-02 22:07:26,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:07:26,238 INFO L225 Difference]: With dead ends: 99424 [2021-11-02 22:07:26,238 INFO L226 Difference]: Without dead ends: 90392 [2021-11-02 22:07:26,278 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-02 22:07:26,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90392 states. [2021-11-02 22:07:28,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90392 to 47139. [2021-11-02 22:07:28,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47139 states, 47022 states have (on average 1.4724809663561738) internal successors, (69239), 47027 states have internal predecessors, (69239), 107 states have call successors, (107), 4 states have call predecessors, (107), 4 states have return successors, (107), 107 states have call predecessors, (107), 107 states have call successors, (107) [2021-11-02 22:07:28,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47139 states to 47139 states and 69453 transitions. [2021-11-02 22:07:28,853 INFO L78 Accepts]: Start accepts. Automaton has 47139 states and 69453 transitions. Word has length 43 [2021-11-02 22:07:28,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:07:28,853 INFO L470 AbstractCegarLoop]: Abstraction has 47139 states and 69453 transitions. [2021-11-02 22:07:28,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:07:28,854 INFO L276 IsEmpty]: Start isEmpty. Operand 47139 states and 69453 transitions. [2021-11-02 22:07:28,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-02 22:07:28,872 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:07:28,872 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:07:28,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-02 22:07:28,873 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2021-11-02 22:07:28,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:07:28,873 INFO L85 PathProgramCache]: Analyzing trace with hash 2077007777, now seen corresponding path program 1 times [2021-11-02 22:07:28,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:07:28,874 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281984478] [2021-11-02 22:07:28,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:07:28,874 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:07:28,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:07:29,090 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:07:29,091 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:07:29,091 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281984478] [2021-11-02 22:07:29,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281984478] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:07:29,091 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:07:29,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 22:07:29,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918838954] [2021-11-02 22:07:29,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:07:29,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:07:29,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:07:29,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:07:29,094 INFO L87 Difference]: Start difference. First operand 47139 states and 69453 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 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)