./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test15-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test15-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d2e5061cdab54d9faeb4b87debefa6d4cd511c313e4ad95bcaf137fbc78127a3 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 05:51:11,472 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 05:51:11,474 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 05:51:11,542 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 05:51:11,543 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 05:51:11,549 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 05:51:11,551 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 05:51:11,556 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 05:51:11,559 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 05:51:11,568 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 05:51:11,570 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 05:51:11,572 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 05:51:11,573 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 05:51:11,576 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 05:51:11,579 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 05:51:11,585 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 05:51:11,587 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 05:51:11,588 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 05:51:11,591 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 05:51:11,601 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 05:51:11,604 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 05:51:11,606 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 05:51:11,610 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 05:51:11,611 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 05:51:11,619 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 05:51:11,619 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 05:51:11,620 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 05:51:11,621 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 05:51:11,622 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 05:51:11,623 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 05:51:11,624 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 05:51:11,625 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 05:51:11,626 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 05:51:11,627 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 05:51:11,629 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 05:51:11,629 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 05:51:11,630 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 05:51:11,630 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 05:51:11,631 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 05:51:11,632 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 05:51:11,633 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 05:51:11,634 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-20 05:51:11,662 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 05:51:11,662 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 05:51:11,663 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 05:51:11,663 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 05:51:11,664 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 05:51:11,664 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 05:51:11,665 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 05:51:11,665 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 05:51:11,666 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 05:51:11,666 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 05:51:11,666 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 05:51:11,667 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-20 05:51:11,667 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 05:51:11,667 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 05:51:11,667 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 05:51:11,668 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-20 05:51:11,668 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-20 05:51:11,668 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-20 05:51:11,669 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 05:51:11,669 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-20 05:51:11,669 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 05:51:11,669 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 05:51:11,670 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 05:51:11,670 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 05:51:11,670 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 05:51:11,671 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 05:51:11,671 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 05:51:11,671 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 05:51:11,671 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 05:51:11,672 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 05:51:11,672 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 05:51:11,672 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_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d2e5061cdab54d9faeb4b87debefa6d4cd511c313e4ad95bcaf137fbc78127a3 [2021-11-20 05:51:12,062 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 05:51:12,113 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 05:51:12,116 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 05:51:12,117 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 05:51:12,119 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 05:51:12,120 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/ldv-memsafety/memleaks_test15-2.i [2021-11-20 05:51:12,206 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/data/0772fd40d/2b092ee36e8e4142bac258d44f67bb29/FLAGa3cafd35b [2021-11-20 05:51:12,921 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 05:51:12,922 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/sv-benchmarks/c/ldv-memsafety/memleaks_test15-2.i [2021-11-20 05:51:12,959 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/data/0772fd40d/2b092ee36e8e4142bac258d44f67bb29/FLAGa3cafd35b [2021-11-20 05:51:13,105 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/data/0772fd40d/2b092ee36e8e4142bac258d44f67bb29 [2021-11-20 05:51:13,109 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 05:51:13,110 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 05:51:13,112 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 05:51:13,112 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 05:51:13,121 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 05:51:13,122 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:51:13" (1/1) ... [2021-11-20 05:51:13,123 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22784c9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:51:13, skipping insertion in model container [2021-11-20 05:51:13,124 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:51:13" (1/1) ... [2021-11-20 05:51:13,131 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 05:51:13,210 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 05:51:13,821 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:51:13,843 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-20 05:51:13,844 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1e51a9f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:51:13, skipping insertion in model container [2021-11-20 05:51:13,844 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 05:51:13,845 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-20 05:51:13,847 INFO L158 Benchmark]: Toolchain (without parser) took 735.31ms. Allocated memory is still 107.0MB. Free memory was 65.9MB in the beginning and 76.8MB in the end (delta: -10.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-20 05:51:13,848 INFO L158 Benchmark]: CDTParser took 0.41ms. Allocated memory is still 107.0MB. Free memory is still 84.0MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 05:51:13,849 INFO L158 Benchmark]: CACSL2BoogieTranslator took 732.61ms. Allocated memory is still 107.0MB. Free memory was 65.7MB in the beginning and 76.8MB in the end (delta: -11.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-20 05:51:13,850 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41ms. Allocated memory is still 107.0MB. Free memory is still 84.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 732.61ms. Allocated memory is still 107.0MB. Free memory was 65.7MB in the beginning and 76.8MB in the end (delta: -11.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test15-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d2e5061cdab54d9faeb4b87debefa6d4cd511c313e4ad95bcaf137fbc78127a3 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 05:51:16,430 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 05:51:16,433 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 05:51:16,511 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 05:51:16,512 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 05:51:16,514 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 05:51:16,517 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 05:51:16,520 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 05:51:16,523 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 05:51:16,524 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 05:51:16,526 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 05:51:16,528 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 05:51:16,529 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 05:51:16,530 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 05:51:16,532 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 05:51:16,534 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 05:51:16,536 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 05:51:16,537 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 05:51:16,540 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 05:51:16,544 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 05:51:16,546 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 05:51:16,548 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 05:51:16,550 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 05:51:16,552 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 05:51:16,557 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 05:51:16,557 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 05:51:16,558 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 05:51:16,560 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 05:51:16,560 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 05:51:16,562 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 05:51:16,563 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 05:51:16,564 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 05:51:16,565 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 05:51:16,566 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 05:51:16,568 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 05:51:16,568 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 05:51:16,569 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 05:51:16,570 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 05:51:16,571 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 05:51:16,572 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 05:51:16,573 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 05:51:16,575 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-20 05:51:16,609 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 05:51:16,613 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 05:51:16,614 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 05:51:16,615 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 05:51:16,617 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 05:51:16,617 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 05:51:16,619 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 05:51:16,619 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 05:51:16,620 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 05:51:16,620 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 05:51:16,622 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 05:51:16,622 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-20 05:51:16,622 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 05:51:16,623 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 05:51:16,623 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 05:51:16,623 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-20 05:51:16,624 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-20 05:51:16,624 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-20 05:51:16,625 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 05:51:16,625 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-20 05:51:16,625 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-20 05:51:16,626 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-20 05:51:16,626 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 05:51:16,626 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 05:51:16,627 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 05:51:16,627 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 05:51:16,627 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 05:51:16,628 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 05:51:16,628 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 05:51:16,628 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 05:51:16,629 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-20 05:51:16,629 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-20 05:51:16,630 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 05:51:16,630 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 05:51:16,630 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d2e5061cdab54d9faeb4b87debefa6d4cd511c313e4ad95bcaf137fbc78127a3 [2021-11-20 05:51:17,159 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 05:51:17,205 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 05:51:17,208 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 05:51:17,210 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 05:51:17,211 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 05:51:17,213 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/ldv-memsafety/memleaks_test15-2.i [2021-11-20 05:51:17,291 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/data/ca28d6745/e538d2a9ac4141bd87c478498782ee76/FLAGd424dca11 [2021-11-20 05:51:18,134 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 05:51:18,135 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/sv-benchmarks/c/ldv-memsafety/memleaks_test15-2.i [2021-11-20 05:51:18,164 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/data/ca28d6745/e538d2a9ac4141bd87c478498782ee76/FLAGd424dca11 [2021-11-20 05:51:18,309 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/data/ca28d6745/e538d2a9ac4141bd87c478498782ee76 [2021-11-20 05:51:18,312 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 05:51:18,319 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 05:51:18,321 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 05:51:18,321 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 05:51:18,333 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 05:51:18,334 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:51:18" (1/1) ... [2021-11-20 05:51:18,335 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31355823 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:51:18, skipping insertion in model container [2021-11-20 05:51:18,336 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:51:18" (1/1) ... [2021-11-20 05:51:18,356 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 05:51:18,441 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 05:51:19,103 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:51:19,137 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-20 05:51:19,158 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 05:51:19,264 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:51:19,296 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 05:51:19,354 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:51:19,412 INFO L208 MainTranslator]: Completed translation [2021-11-20 05:51:19,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:51:19 WrapperNode [2021-11-20 05:51:19,413 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 05:51:19,415 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 05:51:19,415 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 05:51:19,415 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 05:51:19,425 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:51:19" (1/1) ... [2021-11-20 05:51:19,457 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:51:19" (1/1) ... [2021-11-20 05:51:19,518 INFO L137 Inliner]: procedures = 176, calls = 104, calls flagged for inlining = 31, calls inlined = 14, statements flattened = 171 [2021-11-20 05:51:19,519 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 05:51:19,519 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 05:51:19,520 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 05:51:19,520 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 05:51:19,531 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:51:19" (1/1) ... [2021-11-20 05:51:19,531 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:51:19" (1/1) ... [2021-11-20 05:51:19,538 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:51:19" (1/1) ... [2021-11-20 05:51:19,538 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:51:19" (1/1) ... [2021-11-20 05:51:19,555 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:51:19" (1/1) ... [2021-11-20 05:51:19,558 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:51:19" (1/1) ... [2021-11-20 05:51:19,562 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:51:19" (1/1) ... [2021-11-20 05:51:19,568 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 05:51:19,569 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 05:51:19,569 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 05:51:19,569 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 05:51:19,570 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:51:19" (1/1) ... [2021-11-20 05:51:19,579 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 05:51:19,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:51:19,616 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 05:51:19,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 05:51:19,677 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-20 05:51:19,677 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-20 05:51:19,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-20 05:51:19,678 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 05:51:19,678 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 05:51:19,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 05:51:19,679 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_hid_set_drvdata [2021-11-20 05:51:19,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_hid_set_drvdata [2021-11-20 05:51:19,679 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 05:51:19,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-20 05:51:19,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-20 05:51:19,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 05:51:19,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-20 05:51:19,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 05:51:19,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 05:51:19,897 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 05:51:19,904 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 05:51:20,681 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 05:51:20,694 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 05:51:20,694 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-20 05:51:20,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:51:20 BoogieIcfgContainer [2021-11-20 05:51:20,698 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 05:51:20,701 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 05:51:20,702 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 05:51:20,706 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 05:51:20,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 05:51:18" (1/3) ... [2021-11-20 05:51:20,708 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e5d05fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:51:20, skipping insertion in model container [2021-11-20 05:51:20,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:51:19" (2/3) ... [2021-11-20 05:51:20,709 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e5d05fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:51:20, skipping insertion in model container [2021-11-20 05:51:20,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:51:20" (3/3) ... [2021-11-20 05:51:20,718 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test15-2.i [2021-11-20 05:51:20,729 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 05:51:20,729 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 50 error locations. [2021-11-20 05:51:20,828 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 05:51:20,849 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=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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 [2021-11-20 05:51:20,851 INFO L340 AbstractCegarLoop]: Starting to check reachability of 50 error locations. [2021-11-20 05:51:20,881 INFO L276 IsEmpty]: Start isEmpty. Operand has 135 states, 77 states have (on average 1.7922077922077921) internal successors, (138), 127 states have internal predecessors, (138), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-20 05:51:20,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-20 05:51:20,895 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:51:20,897 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:51:20,898 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr47ASSERT_VIOLATIONMEMORY_LEAK === [ldv_hid_set_drvdataErr0REQUIRES_VIOLATION, ldv_hid_set_drvdataErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION (and 47 more)] === [2021-11-20 05:51:20,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:51:20,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1983254393, now seen corresponding path program 1 times [2021-11-20 05:51:20,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:51:20,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1804947245] [2021-11-20 05:51:20,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:51:20,923 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:51:20,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:51:20,930 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:51:20,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-20 05:51:21,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:21,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 05:51:21,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:51:21,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:51:21,213 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:51:21,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:51:21,301 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:51:21,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1804947245] [2021-11-20 05:51:21,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1804947245] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:51:21,304 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:51:21,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-20 05:51:21,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826360035] [2021-11-20 05:51:21,308 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:51:21,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 05:51:21,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:51:21,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 05:51:21,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:51:21,361 INFO L87 Difference]: Start difference. First operand has 135 states, 77 states have (on average 1.7922077922077921) internal successors, (138), 127 states have internal predecessors, (138), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 05:51:21,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:51:21,563 INFO L93 Difference]: Finished difference Result 257 states and 287 transitions. [2021-11-20 05:51:21,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 05:51:21,569 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-11-20 05:51:21,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:51:21,599 INFO L225 Difference]: With dead ends: 257 [2021-11-20 05:51:21,599 INFO L226 Difference]: Without dead ends: 253 [2021-11-20 05:51:21,602 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:51:21,612 INFO L933 BasicCegarLoop]: 145 mSDtfsCounter, 124 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 567 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:51:21,613 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 567 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 05:51:21,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2021-11-20 05:51:21,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 137. [2021-11-20 05:51:21,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 79 states have (on average 1.759493670886076) internal successors, (139), 128 states have internal predecessors, (139), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2021-11-20 05:51:21,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 152 transitions. [2021-11-20 05:51:21,691 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 152 transitions. Word has length 11 [2021-11-20 05:51:21,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:51:21,692 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 152 transitions. [2021-11-20 05:51:21,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 05:51:21,692 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 152 transitions. [2021-11-20 05:51:21,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-20 05:51:21,694 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:51:21,694 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:51:21,712 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-20 05:51:21,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:51:21,909 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr47ASSERT_VIOLATIONMEMORY_LEAK === [ldv_hid_set_drvdataErr0REQUIRES_VIOLATION, ldv_hid_set_drvdataErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION (and 47 more)] === [2021-11-20 05:51:21,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:51:21,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1095750712, now seen corresponding path program 1 times [2021-11-20 05:51:21,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:51:21,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1783175297] [2021-11-20 05:51:21,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:51:21,911 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:51:21,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:51:21,913 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:51:21,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-20 05:51:22,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:22,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 05:51:22,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:51:22,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:51:22,114 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:51:22,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:51:22,203 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:51:22,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1783175297] [2021-11-20 05:51:22,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1783175297] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:51:22,204 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:51:22,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-20 05:51:22,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576662679] [2021-11-20 05:51:22,205 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:51:22,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 05:51:22,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:51:22,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 05:51:22,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:51:22,208 INFO L87 Difference]: Start difference. First operand 137 states and 152 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 05:51:22,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:51:22,781 INFO L93 Difference]: Finished difference Result 226 states and 251 transitions. [2021-11-20 05:51:22,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 05:51:22,782 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-11-20 05:51:22,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:51:22,785 INFO L225 Difference]: With dead ends: 226 [2021-11-20 05:51:22,785 INFO L226 Difference]: Without dead ends: 224 [2021-11-20 05:51:22,786 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:51:22,787 INFO L933 BasicCegarLoop]: 208 mSDtfsCounter, 92 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-20 05:51:22,788 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 440 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-20 05:51:22,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2021-11-20 05:51:22,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 133. [2021-11-20 05:51:22,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 76 states have (on average 1.7763157894736843) internal successors, (135), 125 states have internal predecessors, (135), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-20 05:51:22,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 145 transitions. [2021-11-20 05:51:22,807 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 145 transitions. Word has length 11 [2021-11-20 05:51:22,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:51:22,808 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 145 transitions. [2021-11-20 05:51:22,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 05:51:22,809 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 145 transitions. [2021-11-20 05:51:22,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-20 05:51:22,810 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:51:22,810 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:51:22,829 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-20 05:51:23,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:51:23,023 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_FREE === [ldv_hid_set_drvdataErr0REQUIRES_VIOLATION, ldv_hid_set_drvdataErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION (and 47 more)] === [2021-11-20 05:51:23,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:51:23,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1690514833, now seen corresponding path program 1 times [2021-11-20 05:51:23,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:51:23,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [135232947] [2021-11-20 05:51:23,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:51:23,025 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:51:23,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:51:23,027 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:51:23,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-20 05:51:23,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:23,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 05:51:23,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:51:23,216 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 05:51:23,216 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:51:23,301 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 05:51:23,302 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:51:23,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [135232947] [2021-11-20 05:51:23,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [135232947] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:51:23,302 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:51:23,302 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-20 05:51:23,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634379021] [2021-11-20 05:51:23,303 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:51:23,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 05:51:23,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:51:23,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 05:51:23,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:51:23,305 INFO L87 Difference]: Start difference. First operand 133 states and 145 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 05:51:23,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:51:23,478 INFO L93 Difference]: Finished difference Result 250 states and 276 transitions. [2021-11-20 05:51:23,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 05:51:23,479 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2021-11-20 05:51:23,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:51:23,483 INFO L225 Difference]: With dead ends: 250 [2021-11-20 05:51:23,483 INFO L226 Difference]: Without dead ends: 250 [2021-11-20 05:51:23,483 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:51:23,492 INFO L933 BasicCegarLoop]: 249 mSDtfsCounter, 118 mSDsluCounter, 621 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 870 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 05:51:23,498 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 870 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 05:51:23,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-11-20 05:51:23,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 137. [2021-11-20 05:51:23,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 79 states have (on average 1.7468354430379747) internal successors, (138), 128 states have internal predecessors, (138), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2021-11-20 05:51:23,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 151 transitions. [2021-11-20 05:51:23,531 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 151 transitions. Word has length 17 [2021-11-20 05:51:23,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:51:23,531 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 151 transitions. [2021-11-20 05:51:23,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 05:51:23,532 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 151 transitions. [2021-11-20 05:51:23,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-20 05:51:23,533 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:51:23,533 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:51:23,557 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-20 05:51:23,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:51:23,747 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_FREE === [ldv_hid_set_drvdataErr0REQUIRES_VIOLATION, ldv_hid_set_drvdataErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION (and 47 more)] === [2021-11-20 05:51:23,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:51:23,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1719143984, now seen corresponding path program 1 times [2021-11-20 05:51:23,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:51:23,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1588170234] [2021-11-20 05:51:23,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:51:23,749 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:51:23,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:51:23,750 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:51:23,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-20 05:51:23,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:23,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 05:51:23,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:51:23,897 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 05:51:23,897 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:51:23,975 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 05:51:23,976 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:51:23,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1588170234] [2021-11-20 05:51:23,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1588170234] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:51:23,977 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 05:51:23,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-11-20 05:51:23,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524593178] [2021-11-20 05:51:23,977 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 05:51:23,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 05:51:23,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:51:23,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 05:51:23,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:51:23,979 INFO L87 Difference]: Start difference. First operand 137 states and 151 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 05:51:24,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:51:24,024 INFO L93 Difference]: Finished difference Result 136 states and 150 transitions. [2021-11-20 05:51:24,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 05:51:24,025 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2021-11-20 05:51:24,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:51:24,026 INFO L225 Difference]: With dead ends: 136 [2021-11-20 05:51:24,027 INFO L226 Difference]: Without dead ends: 136 [2021-11-20 05:51:24,027 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:51:24,029 INFO L933 BasicCegarLoop]: 137 mSDtfsCounter, 118 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:51:24,029 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [121 Valid, 423 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 05:51:24,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-11-20 05:51:24,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2021-11-20 05:51:24,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 79 states have (on average 1.7341772151898733) internal successors, (137), 127 states have internal predecessors, (137), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2021-11-20 05:51:24,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 150 transitions. [2021-11-20 05:51:24,043 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 150 transitions. Word has length 17 [2021-11-20 05:51:24,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:51:24,044 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 150 transitions. [2021-11-20 05:51:24,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 05:51:24,045 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 150 transitions. [2021-11-20 05:51:24,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-20 05:51:24,056 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:51:24,056 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:51:24,082 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-20 05:51:24,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:51:24,271 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_FREE === [ldv_hid_set_drvdataErr0REQUIRES_VIOLATION, ldv_hid_set_drvdataErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION (and 47 more)] === [2021-11-20 05:51:24,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:51:24,272 INFO L85 PathProgramCache]: Analyzing trace with hash 1753856167, now seen corresponding path program 1 times [2021-11-20 05:51:24,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:51:24,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1370828102] [2021-11-20 05:51:24,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:51:24,273 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:51:24,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:51:24,274 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:51:24,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-20 05:51:24,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:24,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 05:51:24,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:51:24,738 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:51:24,738 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:51:24,917 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 05:51:24,917 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:51:24,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1370828102] [2021-11-20 05:51:24,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1370828102] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:51:24,918 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 05:51:24,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 9 [2021-11-20 05:51:24,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042073155] [2021-11-20 05:51:24,918 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 05:51:24,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 05:51:24,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:51:24,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 05:51:24,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-11-20 05:51:24,920 INFO L87 Difference]: Start difference. First operand 136 states and 150 transitions. Second operand has 10 states, 9 states have (on average 3.0) internal successors, (27), 8 states have internal predecessors, (27), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-20 05:51:25,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:51:25,297 INFO L93 Difference]: Finished difference Result 257 states and 286 transitions. [2021-11-20 05:51:25,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-20 05:51:25,298 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.0) internal successors, (27), 8 states have internal predecessors, (27), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 18 [2021-11-20 05:51:25,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:51:25,301 INFO L225 Difference]: With dead ends: 257 [2021-11-20 05:51:25,301 INFO L226 Difference]: Without dead ends: 257 [2021-11-20 05:51:25,301 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-11-20 05:51:25,302 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 722 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 732 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 37 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 05:51:25,303 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [732 Valid, 469 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 123 Invalid, 0 Unknown, 37 Unchecked, 0.3s Time] [2021-11-20 05:51:25,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2021-11-20 05:51:25,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 142. [2021-11-20 05:51:25,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 84 states have (on average 1.6904761904761905) internal successors, (142), 131 states have internal predecessors, (142), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (10), 7 states have call predecessors, (10), 6 states have call successors, (10) [2021-11-20 05:51:25,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 158 transitions. [2021-11-20 05:51:25,335 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 158 transitions. Word has length 18 [2021-11-20 05:51:25,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:51:25,336 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 158 transitions. [2021-11-20 05:51:25,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.0) internal successors, (27), 8 states have internal predecessors, (27), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-20 05:51:25,337 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 158 transitions. [2021-11-20 05:51:25,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-20 05:51:25,340 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:51:25,340 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:51:25,357 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-20 05:51:25,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:51:25,554 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_FREE === [ldv_hid_set_drvdataErr0REQUIRES_VIOLATION, ldv_hid_set_drvdataErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION (and 47 more)] === [2021-11-20 05:51:25,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:51:25,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1465033454, now seen corresponding path program 1 times [2021-11-20 05:51:25,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:51:25,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1618993510] [2021-11-20 05:51:25,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:51:25,556 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:51:25,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:51:25,557 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:51:25,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-20 05:51:25,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:25,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 05:51:25,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:51:25,683 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 05:51:25,795 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:51:25,796 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:51:26,071 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:51:26,071 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:51:26,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1618993510] [2021-11-20 05:51:26,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1618993510] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:51:26,072 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 05:51:26,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2021-11-20 05:51:26,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054758172] [2021-11-20 05:51:26,073 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 05:51:26,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 05:51:26,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:51:26,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 05:51:26,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-20 05:51:26,080 INFO L87 Difference]: Start difference. First operand 142 states and 158 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-20 05:51:26,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:51:26,562 INFO L93 Difference]: Finished difference Result 187 states and 209 transitions. [2021-11-20 05:51:26,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 05:51:26,563 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 19 [2021-11-20 05:51:26,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:51:26,565 INFO L225 Difference]: With dead ends: 187 [2021-11-20 05:51:26,565 INFO L226 Difference]: Without dead ends: 187 [2021-11-20 05:51:26,565 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 4 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-20 05:51:26,567 INFO L933 BasicCegarLoop]: 113 mSDtfsCounter, 82 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 88 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-20 05:51:26,567 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 415 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 219 Invalid, 0 Unknown, 88 Unchecked, 0.5s Time] [2021-11-20 05:51:26,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2021-11-20 05:51:26,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 147. [2021-11-20 05:51:26,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 89 states have (on average 1.6629213483146068) internal successors, (148), 135 states have internal predecessors, (148), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (10), 8 states have call predecessors, (10), 6 states have call successors, (10) [2021-11-20 05:51:26,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 164 transitions. [2021-11-20 05:51:26,577 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 164 transitions. Word has length 19 [2021-11-20 05:51:26,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:51:26,577 INFO L470 AbstractCegarLoop]: Abstraction has 147 states and 164 transitions. [2021-11-20 05:51:26,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-20 05:51:26,578 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 164 transitions. [2021-11-20 05:51:26,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-20 05:51:26,586 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:51:26,587 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:51:26,607 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-20 05:51:26,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:51:26,801 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_FREE === [ldv_hid_set_drvdataErr0REQUIRES_VIOLATION, ldv_hid_set_drvdataErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION (and 47 more)] === [2021-11-20 05:51:26,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:51:26,802 INFO L85 PathProgramCache]: Analyzing trace with hash 42518355, now seen corresponding path program 1 times [2021-11-20 05:51:26,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:51:26,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1200755605] [2021-11-20 05:51:26,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:51:26,803 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:51:26,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:51:26,804 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:51:26,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-20 05:51:26,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:26,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-20 05:51:26,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:51:26,982 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:51:26,983 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:51:27,093 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 05:51:27,094 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:51:27,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1200755605] [2021-11-20 05:51:27,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1200755605] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-20 05:51:27,095 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 05:51:27,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2021-11-20 05:51:27,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532770799] [2021-11-20 05:51:27,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:51:27,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 05:51:27,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:51:27,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 05:51:27,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:51:27,097 INFO L87 Difference]: Start difference. First operand 147 states and 164 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 05:51:27,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:51:27,143 INFO L93 Difference]: Finished difference Result 144 states and 157 transitions. [2021-11-20 05:51:27,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 05:51:27,144 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 19 [2021-11-20 05:51:27,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:51:27,146 INFO L225 Difference]: With dead ends: 144 [2021-11-20 05:51:27,146 INFO L226 Difference]: Without dead ends: 142 [2021-11-20 05:51:27,146 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:51:27,147 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 0 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:51:27,148 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 566 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 05:51:27,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2021-11-20 05:51:27,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2021-11-20 05:51:27,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 85 states have (on average 1.6823529411764706) internal successors, (143), 132 states have internal predecessors, (143), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2021-11-20 05:51:27,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 155 transitions. [2021-11-20 05:51:27,157 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 155 transitions. Word has length 19 [2021-11-20 05:51:27,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:51:27,157 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 155 transitions. [2021-11-20 05:51:27,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 05:51:27,158 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 155 transitions. [2021-11-20 05:51:27,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-20 05:51:27,159 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:51:27,159 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:51:27,173 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-20 05:51:27,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:51:27,373 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ldv_hid_set_drvdataErr0REQUIRES_VIOLATION, ldv_hid_set_drvdataErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION (and 47 more)] === [2021-11-20 05:51:27,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:51:27,374 INFO L85 PathProgramCache]: Analyzing trace with hash 204799578, now seen corresponding path program 1 times [2021-11-20 05:51:27,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:51:27,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [864668111] [2021-11-20 05:51:27,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:51:27,374 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:51:27,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:51:27,376 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:51:27,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-20 05:51:27,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:27,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-20 05:51:27,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:51:27,488 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 05:51:27,617 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-20 05:51:27,618 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 23 [2021-11-20 05:51:27,647 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 05:51:27,647 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:51:27,918 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 05:51:27,918 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:51:27,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [864668111] [2021-11-20 05:51:27,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [864668111] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:51:27,919 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 05:51:27,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2021-11-20 05:51:27,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365034221] [2021-11-20 05:51:27,920 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 05:51:27,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 05:51:27,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:51:27,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 05:51:27,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-20 05:51:27,922 INFO L87 Difference]: Start difference. First operand 142 states and 155 transitions. Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 2 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-20 05:51:28,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:51:28,399 INFO L93 Difference]: Finished difference Result 186 states and 203 transitions. [2021-11-20 05:51:28,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 05:51:28,400 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 2 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 22 [2021-11-20 05:51:28,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:51:28,402 INFO L225 Difference]: With dead ends: 186 [2021-11-20 05:51:28,402 INFO L226 Difference]: Without dead ends: 186 [2021-11-20 05:51:28,403 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 30 SyntacticMatches, 6 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-20 05:51:28,404 INFO L933 BasicCegarLoop]: 105 mSDtfsCounter, 103 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 85 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-20 05:51:28,404 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 402 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 215 Invalid, 0 Unknown, 85 Unchecked, 0.4s Time] [2021-11-20 05:51:28,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2021-11-20 05:51:28,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 162. [2021-11-20 05:51:28,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 105 states have (on average 1.6666666666666667) internal successors, (175), 150 states have internal predecessors, (175), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2021-11-20 05:51:28,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 189 transitions. [2021-11-20 05:51:28,414 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 189 transitions. Word has length 22 [2021-11-20 05:51:28,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:51:28,414 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 189 transitions. [2021-11-20 05:51:28,415 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 2 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-20 05:51:28,415 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 189 transitions. [2021-11-20 05:51:28,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-20 05:51:28,416 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:51:28,416 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:51:28,434 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-20 05:51:28,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:51:28,630 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ldv_hid_set_drvdataErr0REQUIRES_VIOLATION, ldv_hid_set_drvdataErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION (and 47 more)] === [2021-11-20 05:51:28,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:51:28,631 INFO L85 PathProgramCache]: Analyzing trace with hash 204799579, now seen corresponding path program 1 times [2021-11-20 05:51:28,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:51:28,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [715841751] [2021-11-20 05:51:28,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:51:28,632 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:51:28,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:51:28,633 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:51:28,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-20 05:51:28,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:28,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-20 05:51:28,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:51:28,804 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 05:51:28,814 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 05:51:31,150 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-20 05:51:31,150 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2021-11-20 05:51:31,165 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 05:51:31,166 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 26 [2021-11-20 05:51:31,208 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 05:51:31,208 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:51:42,618 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 29 [2021-11-20 05:51:42,753 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 05:51:42,754 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:51:42,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [715841751] [2021-11-20 05:51:42,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [715841751] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:51:42,754 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 05:51:42,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-11-20 05:51:42,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031666729] [2021-11-20 05:51:42,755 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 05:51:42,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-20 05:51:42,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:51:42,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-20 05:51:42,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=198, Unknown=4, NotChecked=0, Total=240 [2021-11-20 05:51:42,756 INFO L87 Difference]: Start difference. First operand 162 states and 189 transitions. Second operand has 16 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 12 states have internal predecessors, (25), 3 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2021-11-20 05:51:48,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:51:48,362 INFO L93 Difference]: Finished difference Result 338 states and 378 transitions. [2021-11-20 05:51:48,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 05:51:48,363 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 12 states have internal predecessors, (25), 3 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) Word has length 22 [2021-11-20 05:51:48,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:51:48,372 INFO L225 Difference]: With dead ends: 338 [2021-11-20 05:51:48,372 INFO L226 Difference]: Without dead ends: 338 [2021-11-20 05:51:48,373 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 13.7s TimeCoverageRelationStatistics Valid=58, Invalid=280, Unknown=4, NotChecked=0, Total=342 [2021-11-20 05:51:48,375 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 274 mSDsluCounter, 808 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 891 SdHoareTripleChecker+Invalid, 1080 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 603 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-20 05:51:48,376 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [277 Valid, 891 Invalid, 1080 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 442 Invalid, 0 Unknown, 603 Unchecked, 1.4s Time] [2021-11-20 05:51:48,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2021-11-20 05:51:48,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 254. [2021-11-20 05:51:48,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 197 states have (on average 1.6751269035532994) internal successors, (330), 240 states have internal predecessors, (330), 8 states have call successors, (8), 4 states have call predecessors, (8), 5 states have return successors, (10), 9 states have call predecessors, (10), 8 states have call successors, (10) [2021-11-20 05:51:48,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 348 transitions. [2021-11-20 05:51:48,399 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 348 transitions. Word has length 22 [2021-11-20 05:51:48,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:51:48,401 INFO L470 AbstractCegarLoop]: Abstraction has 254 states and 348 transitions. [2021-11-20 05:51:48,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 12 states have internal predecessors, (25), 3 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2021-11-20 05:51:48,401 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 348 transitions. [2021-11-20 05:51:48,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-20 05:51:48,404 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:51:48,404 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:51:48,417 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-20 05:51:48,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:51:48,617 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr47ASSERT_VIOLATIONMEMORY_LEAK === [ldv_hid_set_drvdataErr0REQUIRES_VIOLATION, ldv_hid_set_drvdataErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION (and 47 more)] === [2021-11-20 05:51:48,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:51:48,617 INFO L85 PathProgramCache]: Analyzing trace with hash 852130837, now seen corresponding path program 1 times [2021-11-20 05:51:48,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:51:48,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1789937181] [2021-11-20 05:51:48,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:51:48,618 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:51:48,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:51:48,619 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:51:48,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-20 05:51:48,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:48,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-20 05:51:48,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:51:48,965 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 05:51:48,965 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:51:55,651 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_old_#valid#1_BEFORE_CALL_6| (Array (_ BitVec 32) (_ BitVec 1))) (|v_ldv_malloc_#res.base_76| (_ BitVec 32))) (or (exists ((|v_ULTIMATE.start_entry_point_#t~ret53#1.base_35| (_ BitVec 32))) (and (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_old(#valid)| |v_ULTIMATE.start_entry_point_#t~ret53#1.base_35|)))))))))))))) (not (= (store |c_old(#valid)| |v_ULTIMATE.start_entry_point_#t~ret53#1.base_35| (_ bv0 1)) |v_ULTIMATE.start_main_old_#valid#1_BEFORE_CALL_6|)))) (= (store |c_#valid| |v_ldv_malloc_#res.base_76| (_ bv0 1)) |v_ULTIMATE.start_main_old_#valid#1_BEFORE_CALL_6|) (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ldv_malloc_#res.base_76|)))))) is different from false [2021-11-20 05:51:55,751 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2021-11-20 05:51:55,751 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:51:55,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1789937181] [2021-11-20 05:51:55,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1789937181] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:51:55,751 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 05:51:55,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 12 [2021-11-20 05:51:55,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970226322] [2021-11-20 05:51:55,752 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 05:51:55,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-20 05:51:55,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:51:55,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-20 05:51:55,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=101, Unknown=6, NotChecked=20, Total=156 [2021-11-20 05:51:55,754 INFO L87 Difference]: Start difference. First operand 254 states and 348 transitions. Second operand has 13 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-20 05:51:57,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:51:57,197 INFO L93 Difference]: Finished difference Result 327 states and 426 transitions. [2021-11-20 05:51:57,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 05:51:57,198 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 21 [2021-11-20 05:51:57,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:51:57,201 INFO L225 Difference]: With dead ends: 327 [2021-11-20 05:51:57,202 INFO L226 Difference]: Without dead ends: 322 [2021-11-20 05:51:57,202 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=35, Invalid=119, Unknown=6, NotChecked=22, Total=182 [2021-11-20 05:51:57,203 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 78 mSDsluCounter, 930 mSDsCounter, 0 mSdLazyCounter, 570 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 1105 SdHoareTripleChecker+Invalid, 904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 327 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-20 05:51:57,203 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 1105 Invalid, 904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 570 Invalid, 0 Unknown, 327 Unchecked, 1.4s Time] [2021-11-20 05:51:57,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2021-11-20 05:51:57,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 259. [2021-11-20 05:51:57,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 202 states have (on average 1.683168316831683) internal successors, (340), 244 states have internal predecessors, (340), 8 states have call successors, (8), 4 states have call predecessors, (8), 5 states have return successors, (10), 10 states have call predecessors, (10), 8 states have call successors, (10) [2021-11-20 05:51:57,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 358 transitions. [2021-11-20 05:51:57,225 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 358 transitions. Word has length 21 [2021-11-20 05:51:57,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:51:57,227 INFO L470 AbstractCegarLoop]: Abstraction has 259 states and 358 transitions. [2021-11-20 05:51:57,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-20 05:51:57,227 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 358 transitions. [2021-11-20 05:51:57,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-20 05:51:57,229 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:51:57,229 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:51:57,243 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-20 05:51:57,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:51:57,443 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ldv_hid_set_drvdataErr0REQUIRES_VIOLATION, ldv_hid_set_drvdataErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION (and 47 more)] === [2021-11-20 05:51:57,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:51:57,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1592151781, now seen corresponding path program 1 times [2021-11-20 05:51:57,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:51:57,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [561797017] [2021-11-20 05:51:57,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:51:57,444 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:51:57,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:51:57,445 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:51:57,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-20 05:51:57,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:57,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-20 05:51:57,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:51:57,635 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 05:51:57,635 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:51:57,768 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-20 05:51:57,769 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:51:57,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [561797017] [2021-11-20 05:51:57,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [561797017] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-20 05:51:57,769 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 05:51:57,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2021-11-20 05:51:57,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387700717] [2021-11-20 05:51:57,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:51:57,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 05:51:57,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:51:57,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 05:51:57,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:51:57,771 INFO L87 Difference]: Start difference. First operand 259 states and 358 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-20 05:51:57,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:51:57,834 INFO L93 Difference]: Finished difference Result 153 states and 173 transitions. [2021-11-20 05:51:57,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 05:51:57,835 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22 [2021-11-20 05:51:57,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:51:57,836 INFO L225 Difference]: With dead ends: 153 [2021-11-20 05:51:57,836 INFO L226 Difference]: Without dead ends: 147 [2021-11-20 05:51:57,836 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:51:57,837 INFO L933 BasicCegarLoop]: 135 mSDtfsCounter, 0 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 523 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:51:57,838 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 523 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 05:51:57,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-11-20 05:51:57,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 143. [2021-11-20 05:51:57,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 95 states have (on average 1.6105263157894736) internal successors, (153), 134 states have internal predecessors, (153), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-20 05:51:57,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 163 transitions. [2021-11-20 05:51:57,847 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 163 transitions. Word has length 22 [2021-11-20 05:51:57,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:51:57,847 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 163 transitions. [2021-11-20 05:51:57,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-20 05:51:57,848 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 163 transitions. [2021-11-20 05:51:57,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-20 05:51:57,853 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:51:57,854 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:51:57,875 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-20 05:51:58,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:51:58,067 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE === [ldv_hid_set_drvdataErr0REQUIRES_VIOLATION, ldv_hid_set_drvdataErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION (and 47 more)] === [2021-11-20 05:51:58,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:51:58,069 INFO L85 PathProgramCache]: Analyzing trace with hash 2097726863, now seen corresponding path program 1 times [2021-11-20 05:51:58,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:51:58,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1889471505] [2021-11-20 05:51:58,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:51:58,070 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:51:58,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:51:58,071 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:51:58,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-20 05:51:58,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:58,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 05:51:58,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:51:58,252 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-20 05:51:58,285 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 8 [2021-11-20 05:51:58,306 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-20 05:51:58,306 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:51:58,407 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-20 05:51:58,407 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:51:58,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1889471505] [2021-11-20 05:51:58,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1889471505] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:51:58,408 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:51:58,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-11-20 05:51:58,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100903887] [2021-11-20 05:51:58,408 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:51:58,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 05:51:58,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:51:58,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 05:51:58,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-20 05:51:58,410 INFO L87 Difference]: Start difference. First operand 143 states and 163 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 05:51:58,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:51:58,675 INFO L93 Difference]: Finished difference Result 153 states and 173 transitions. [2021-11-20 05:51:58,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 05:51:58,676 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 27 [2021-11-20 05:51:58,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:51:58,677 INFO L225 Difference]: With dead ends: 153 [2021-11-20 05:51:58,678 INFO L226 Difference]: Without dead ends: 153 [2021-11-20 05:51:58,678 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-20 05:51:58,679 INFO L933 BasicCegarLoop]: 129 mSDtfsCounter, 5 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 05:51:58,679 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 619 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 05:51:58,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-11-20 05:51:58,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 149. [2021-11-20 05:51:58,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 100 states have (on average 1.58) internal successors, (158), 139 states have internal predecessors, (158), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2021-11-20 05:51:58,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 169 transitions. [2021-11-20 05:51:58,687 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 169 transitions. Word has length 27 [2021-11-20 05:51:58,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:51:58,688 INFO L470 AbstractCegarLoop]: Abstraction has 149 states and 169 transitions. [2021-11-20 05:51:58,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 05:51:58,688 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 169 transitions. [2021-11-20 05:51:58,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-20 05:51:58,689 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:51:58,689 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:51:58,714 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-20 05:51:58,902 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:51:58,903 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ldv_hid_set_drvdataErr0REQUIRES_VIOLATION, ldv_hid_set_drvdataErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION (and 47 more)] === [2021-11-20 05:51:58,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:51:58,903 INFO L85 PathProgramCache]: Analyzing trace with hash 2097724533, now seen corresponding path program 1 times [2021-11-20 05:51:58,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:51:58,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [446346160] [2021-11-20 05:51:58,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:51:58,904 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:51:58,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:51:58,905 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:51:58,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-20 05:51:58,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:58,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-20 05:51:59,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:51:59,064 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 05:51:59,140 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-11-20 05:51:59,152 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-20 05:51:59,255 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2021-11-20 05:51:59,259 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-11-20 05:51:59,294 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-20 05:51:59,295 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:52:00,085 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-20 05:52:00,085 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:52:00,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [446346160] [2021-11-20 05:52:00,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [446346160] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:52:00,086 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:52:00,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-11-20 05:52:00,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331239099] [2021-11-20 05:52:00,086 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:52:00,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-20 05:52:00,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:52:00,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-20 05:52:00,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-20 05:52:00,088 INFO L87 Difference]: Start difference. First operand 149 states and 169 transitions. Second operand has 12 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 10 states have internal predecessors, (27), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-20 05:52:01,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:52:01,719 INFO L93 Difference]: Finished difference Result 153 states and 173 transitions. [2021-11-20 05:52:01,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-20 05:52:01,720 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 10 states have internal predecessors, (27), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) Word has length 27 [2021-11-20 05:52:01,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:52:01,722 INFO L225 Difference]: With dead ends: 153 [2021-11-20 05:52:01,722 INFO L226 Difference]: Without dead ends: 153 [2021-11-20 05:52:01,723 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2021-11-20 05:52:01,723 INFO L933 BasicCegarLoop]: 124 mSDtfsCounter, 15 mSDsluCounter, 673 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 797 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-20 05:52:01,724 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 797 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-20 05:52:01,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-11-20 05:52:01,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 151. [2021-11-20 05:52:01,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 102 states have (on average 1.5784313725490196) internal successors, (161), 141 states have internal predecessors, (161), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2021-11-20 05:52:01,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 172 transitions. [2021-11-20 05:52:01,731 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 172 transitions. Word has length 27 [2021-11-20 05:52:01,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:52:01,732 INFO L470 AbstractCegarLoop]: Abstraction has 151 states and 172 transitions. [2021-11-20 05:52:01,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 10 states have internal predecessors, (27), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-20 05:52:01,733 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 172 transitions. [2021-11-20 05:52:01,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-20 05:52:01,734 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:52:01,734 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:52:01,754 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-20 05:52:01,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:52:01,948 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ldv_hid_set_drvdataErr0REQUIRES_VIOLATION, ldv_hid_set_drvdataErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION (and 47 more)] === [2021-11-20 05:52:01,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:52:01,949 INFO L85 PathProgramCache]: Analyzing trace with hash 2097724532, now seen corresponding path program 1 times [2021-11-20 05:52:01,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:52:01,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [614940348] [2021-11-20 05:52:01,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:52:01,949 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:52:01,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:52:01,950 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:52:01,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-20 05:52:02,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:02,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 05:52:02,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:52:02,082 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 05:52:02,109 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2021-11-20 05:52:02,153 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-11-20 05:52:02,172 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-20 05:52:02,172 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:52:02,310 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-20 05:52:02,310 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:52:02,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [614940348] [2021-11-20 05:52:02,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [614940348] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:52:02,310 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:52:02,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-20 05:52:02,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940601577] [2021-11-20 05:52:02,311 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:52:02,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 05:52:02,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:52:02,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 05:52:02,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-20 05:52:02,312 INFO L87 Difference]: Start difference. First operand 151 states and 172 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 05:52:02,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:52:02,907 INFO L93 Difference]: Finished difference Result 151 states and 171 transitions. [2021-11-20 05:52:02,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 05:52:02,908 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 27 [2021-11-20 05:52:02,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:52:02,909 INFO L225 Difference]: With dead ends: 151 [2021-11-20 05:52:02,910 INFO L226 Difference]: Without dead ends: 151 [2021-11-20 05:52:02,910 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 45 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-20 05:52:02,911 INFO L933 BasicCegarLoop]: 130 mSDtfsCounter, 2 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-20 05:52:02,911 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 462 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-20 05:52:02,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-11-20 05:52:02,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2021-11-20 05:52:02,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 102 states have (on average 1.5686274509803921) internal successors, (160), 141 states have internal predecessors, (160), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2021-11-20 05:52:02,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 171 transitions. [2021-11-20 05:52:02,918 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 171 transitions. Word has length 27 [2021-11-20 05:52:02,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:52:02,919 INFO L470 AbstractCegarLoop]: Abstraction has 151 states and 171 transitions. [2021-11-20 05:52:02,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 05:52:02,920 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 171 transitions. [2021-11-20 05:52:02,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-20 05:52:02,920 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:52:02,921 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:52:02,933 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-20 05:52:03,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:52:03,131 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE === [ldv_hid_set_drvdataErr0REQUIRES_VIOLATION, ldv_hid_set_drvdataErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION (and 47 more)] === [2021-11-20 05:52:03,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:52:03,131 INFO L85 PathProgramCache]: Analyzing trace with hash 290272400, now seen corresponding path program 1 times [2021-11-20 05:52:03,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:52:03,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1249102746] [2021-11-20 05:52:03,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:52:03,132 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:52:03,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:52:03,133 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:52:03,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-20 05:52:03,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:03,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-20 05:52:03,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:52:03,734 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-20 05:52:03,735 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:52:03,948 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-20 05:52:03,949 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:52:03,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1249102746] [2021-11-20 05:52:03,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1249102746] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:52:03,949 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 05:52:03,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 9 [2021-11-20 05:52:03,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796317935] [2021-11-20 05:52:03,950 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 05:52:03,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 05:52:03,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:52:03,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 05:52:03,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-11-20 05:52:03,952 INFO L87 Difference]: Start difference. First operand 151 states and 171 transitions. Second operand has 10 states, 9 states have (on average 4.111111111111111) internal successors, (37), 8 states have internal predecessors, (37), 5 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2021-11-20 05:52:04,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:52:04,090 INFO L93 Difference]: Finished difference Result 193 states and 214 transitions. [2021-11-20 05:52:04,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 05:52:04,094 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.111111111111111) internal successors, (37), 8 states have internal predecessors, (37), 5 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 27 [2021-11-20 05:52:04,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:52:04,096 INFO L225 Difference]: With dead ends: 193 [2021-11-20 05:52:04,096 INFO L226 Difference]: Without dead ends: 193 [2021-11-20 05:52:04,097 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-11-20 05:52:04,097 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 97 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 794 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 75 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:52:04,098 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 794 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 58 Invalid, 0 Unknown, 75 Unchecked, 0.1s Time] [2021-11-20 05:52:04,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2021-11-20 05:52:04,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 156. [2021-11-20 05:52:04,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 106 states have (on average 1.5566037735849056) internal successors, (165), 145 states have internal predecessors, (165), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2021-11-20 05:52:04,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 176 transitions. [2021-11-20 05:52:04,110 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 176 transitions. Word has length 27 [2021-11-20 05:52:04,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:52:04,111 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 176 transitions. [2021-11-20 05:52:04,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.111111111111111) internal successors, (37), 8 states have internal predecessors, (37), 5 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2021-11-20 05:52:04,112 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 176 transitions. [2021-11-20 05:52:04,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-20 05:52:04,112 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:52:04,113 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:52:04,131 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-20 05:52:04,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:52:04,326 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ldv_hid_set_drvdataErr0REQUIRES_VIOLATION, ldv_hid_set_drvdataErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION (and 47 more)] === [2021-11-20 05:52:04,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:52:04,327 INFO L85 PathProgramCache]: Analyzing trace with hash 290270070, now seen corresponding path program 1 times [2021-11-20 05:52:04,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:52:04,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1474845774] [2021-11-20 05:52:04,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:52:04,328 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:52:04,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:52:04,329 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:52:04,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-20 05:52:04,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:04,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-20 05:52:04,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:52:04,525 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-20 05:52:04,537 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-20 05:52:04,589 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 25 [2021-11-20 05:52:04,594 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2021-11-20 05:52:04,622 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-20 05:52:04,622 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:52:04,760 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-20 05:52:04,760 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:52:04,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1474845774] [2021-11-20 05:52:04,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1474845774] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:52:04,761 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:52:04,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-11-20 05:52:04,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620450098] [2021-11-20 05:52:04,761 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:52:04,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 05:52:04,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:52:04,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 05:52:04,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-20 05:52:04,762 INFO L87 Difference]: Start difference. First operand 156 states and 176 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 05:52:05,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:52:05,046 INFO L93 Difference]: Finished difference Result 159 states and 177 transitions. [2021-11-20 05:52:05,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 05:52:05,047 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 27 [2021-11-20 05:52:05,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:52:05,049 INFO L225 Difference]: With dead ends: 159 [2021-11-20 05:52:05,049 INFO L226 Difference]: Without dead ends: 159 [2021-11-20 05:52:05,049 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-20 05:52:05,050 INFO L933 BasicCegarLoop]: 131 mSDtfsCounter, 11 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 621 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 05:52:05,050 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 621 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 05:52:05,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-11-20 05:52:05,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 152. [2021-11-20 05:52:05,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 104 states have (on average 1.5384615384615385) internal successors, (160), 141 states have internal predecessors, (160), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2021-11-20 05:52:05,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 171 transitions. [2021-11-20 05:52:05,057 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 171 transitions. Word has length 27 [2021-11-20 05:52:05,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:52:05,058 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 171 transitions. [2021-11-20 05:52:05,058 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 05:52:05,058 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 171 transitions. [2021-11-20 05:52:05,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-20 05:52:05,059 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:52:05,060 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:52:05,079 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-20 05:52:05,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:52:05,274 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ldv_hid_set_drvdataErr0REQUIRES_VIOLATION, ldv_hid_set_drvdataErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION (and 47 more)] === [2021-11-20 05:52:05,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:52:05,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1573614037, now seen corresponding path program 1 times [2021-11-20 05:52:05,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:52:05,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [148023109] [2021-11-20 05:52:05,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:52:05,275 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:52:05,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:52:05,276 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:52:05,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-20 05:52:05,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:05,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-20 05:52:05,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:52:05,373 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 05:52:05,496 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-20 05:52:05,497 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 37 [2021-11-20 05:52:05,697 INFO L354 Elim1Store]: treesize reduction 30, result has 36.2 percent of original size [2021-11-20 05:52:05,697 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 47 [2021-11-20 05:52:05,767 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2021-11-20 05:52:05,971 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 11 [2021-11-20 05:52:06,051 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 05:52:06,051 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:52:28,936 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 4 refuted. 2 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:52:28,937 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:52:28,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [148023109] [2021-11-20 05:52:28,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [148023109] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:52:28,937 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 05:52:28,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 16 [2021-11-20 05:52:28,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608601398] [2021-11-20 05:52:28,938 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 05:52:28,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-20 05:52:28,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:52:28,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-20 05:52:28,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=209, Unknown=9, NotChecked=0, Total=272 [2021-11-20 05:52:28,940 INFO L87 Difference]: Start difference. First operand 152 states and 171 transitions. Second operand has 17 states, 16 states have (on average 2.625) internal successors, (42), 14 states have internal predecessors, (42), 4 states have call successors, (5), 4 states have call predecessors, (5), 6 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2021-11-20 05:52:29,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:52:29,162 INFO L93 Difference]: Finished difference Result 155 states and 173 transitions. [2021-11-20 05:52:29,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 05:52:29,162 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.625) internal successors, (42), 14 states have internal predecessors, (42), 4 states have call successors, (5), 4 states have call predecessors, (5), 6 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) Word has length 29 [2021-11-20 05:52:29,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:52:29,163 INFO L225 Difference]: With dead ends: 155 [2021-11-20 05:52:29,164 INFO L226 Difference]: Without dead ends: 155 [2021-11-20 05:52:29,164 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 38 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 22.6s TimeCoverageRelationStatistics Valid=63, Invalid=234, Unknown=9, NotChecked=0, Total=306 [2021-11-20 05:52:29,165 INFO L933 BasicCegarLoop]: 123 mSDtfsCounter, 20 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 525 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 209 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 05:52:29,165 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 525 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 209 Unchecked, 0.2s Time] [2021-11-20 05:52:29,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-11-20 05:52:29,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2021-11-20 05:52:29,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 107 states have (on average 1.514018691588785) internal successors, (162), 143 states have internal predecessors, (162), 5 states have call successors, (5), 5 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2021-11-20 05:52:29,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 173 transitions. [2021-11-20 05:52:29,173 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 173 transitions. Word has length 29 [2021-11-20 05:52:29,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:52:29,174 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 173 transitions. [2021-11-20 05:52:29,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.625) internal successors, (42), 14 states have internal predecessors, (42), 4 states have call successors, (5), 4 states have call predecessors, (5), 6 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2021-11-20 05:52:29,175 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 173 transitions. [2021-11-20 05:52:29,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-20 05:52:29,177 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:52:29,177 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:52:29,191 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-20 05:52:29,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:52:29,391 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ldv_hid_set_drvdataErr0REQUIRES_VIOLATION, ldv_hid_set_drvdataErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION (and 47 more)] === [2021-11-20 05:52:29,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:52:29,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1573614038, now seen corresponding path program 1 times [2021-11-20 05:52:29,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:52:29,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1778890130] [2021-11-20 05:52:29,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:52:29,392 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:52:29,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:52:29,393 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:52:29,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-20 05:52:29,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:29,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-20 05:52:29,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:52:29,523 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 05:52:29,535 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 05:52:29,857 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-20 05:52:29,857 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 40 [2021-11-20 05:52:29,892 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-20 05:52:29,893 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 39 [2021-11-20 05:52:32,229 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-20 05:52:32,230 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 49 [2021-11-20 05:52:32,255 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-11-20 05:52:32,256 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 43 [2021-11-20 05:52:32,348 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 05:52:32,348 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:52:50,973 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_entry_point_~hdev~0#1.base_BEFORE_CALL_14| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_6| (_ BitVec 32)) (|v_ldv_malloc_#res.base_152| (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ldv_malloc_#res.base_152|)))) (and (bvule (bvadd (_ bv8 32) |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_6|) (bvadd |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_6| (_ bv12 32))) (forall ((v_ldv_malloc_~size_138 (_ BitVec 32))) (bvule (bvadd |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_6| (_ bv12 32)) (select (store |c_#length| |v_ldv_malloc_#res.base_152| v_ldv_malloc_~size_138) |v_ULTIMATE.start_entry_point_~hdev~0#1.base_BEFORE_CALL_14|)))) (exists ((|v_ldv_malloc_#res.base_156| (_ BitVec 32)) (|v_ldv_malloc_#res.base_152| (_ BitVec 32))) (and (= (_ bv0 1) (bvneg (bvneg (select (store |c_old(#valid)| |v_ldv_malloc_#res.base_156| (_ bv1 1)) |v_ldv_malloc_#res.base_152|)))) (= (_ bv0 1) (bvneg (select |c_old(#valid)| |v_ldv_malloc_#res.base_156|))) (or (exists ((v_ldv_malloc_~size_142 (_ BitVec 32)) (v_ldv_malloc_~size_138 (_ BitVec 32))) (not (bvule (bvadd |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_6| (_ bv12 32)) (select (store (store |c_old(#length)| |v_ldv_malloc_#res.base_156| v_ldv_malloc_~size_142) |v_ldv_malloc_#res.base_152| v_ldv_malloc_~size_138) |v_ULTIMATE.start_entry_point_~hdev~0#1.base_BEFORE_CALL_14|)))) (not (bvule (bvadd (_ bv8 32) |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_6|) (bvadd |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_6| (_ bv12 32))))))))) is different from false [2021-11-20 05:53:25,061 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-20 05:53:25,062 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 120 treesize of output 116 [2021-11-20 05:53:25,317 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 4 refuted. 2 times theorem prover too weak. 0 trivial. 4 not checked. [2021-11-20 05:53:25,318 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:53:25,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1778890130] [2021-11-20 05:53:25,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1778890130] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:53:25,318 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 05:53:25,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 20 [2021-11-20 05:53:25,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118664602] [2021-11-20 05:53:25,321 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 05:53:25,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-20 05:53:25,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:53:25,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-20 05:53:25,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=306, Unknown=18, NotChecked=36, Total=420 [2021-11-20 05:53:25,322 INFO L87 Difference]: Start difference. First operand 155 states and 173 transitions. Second operand has 21 states, 20 states have (on average 2.15) internal successors, (43), 19 states have internal predecessors, (43), 5 states have call successors, (5), 4 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2021-11-20 05:53:58,482 WARN L227 SmtUtils]: Spent 12.20s on a formula simplification. DAG size of input: 71 DAG size of output: 31 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-20 05:53:58,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:53:58,975 INFO L93 Difference]: Finished difference Result 185 states and 196 transitions. [2021-11-20 05:53:58,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-20 05:53:58,976 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.15) internal successors, (43), 19 states have internal predecessors, (43), 5 states have call successors, (5), 4 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 29 [2021-11-20 05:53:58,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:53:58,978 INFO L225 Difference]: With dead ends: 185 [2021-11-20 05:53:58,978 INFO L226 Difference]: Without dead ends: 185 [2021-11-20 05:53:58,979 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 74.0s TimeCoverageRelationStatistics Valid=92, Invalid=439, Unknown=25, NotChecked=44, Total=600 [2021-11-20 05:53:58,980 INFO L933 BasicCegarLoop]: 86 mSDtfsCounter, 232 mSDsluCounter, 625 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 711 SdHoareTripleChecker+Invalid, 884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 700 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-20 05:53:58,980 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [234 Valid, 711 Invalid, 884 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 174 Invalid, 0 Unknown, 700 Unchecked, 0.5s Time] [2021-11-20 05:53:58,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2021-11-20 05:53:58,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 154. [2021-11-20 05:53:58,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 107 states have (on average 1.5046728971962617) internal successors, (161), 142 states have internal predecessors, (161), 5 states have call successors, (5), 5 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2021-11-20 05:53:58,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 172 transitions. [2021-11-20 05:53:58,988 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 172 transitions. Word has length 29 [2021-11-20 05:53:58,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:53:58,988 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 172 transitions. [2021-11-20 05:53:58,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.15) internal successors, (43), 19 states have internal predecessors, (43), 5 states have call successors, (5), 4 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2021-11-20 05:53:58,989 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 172 transitions. [2021-11-20 05:53:58,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-20 05:53:58,990 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:53:58,990 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:53:59,001 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-20 05:53:59,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:53:59,195 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ldv_hid_set_drvdataErr0REQUIRES_VIOLATION, ldv_hid_set_drvdataErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION (and 47 more)] === [2021-11-20 05:53:59,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:53:59,195 INFO L85 PathProgramCache]: Analyzing trace with hash 414602102, now seen corresponding path program 1 times [2021-11-20 05:53:59,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:53:59,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2004535478] [2021-11-20 05:53:59,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:53:59,196 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:53:59,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:53:59,197 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:53:59,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-20 05:53:59,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:59,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 05:53:59,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:53:59,433 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-20 05:53:59,433 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:53:59,504 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-20 05:53:59,504 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:53:59,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2004535478] [2021-11-20 05:53:59,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2004535478] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:53:59,504 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:53:59,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-20 05:53:59,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544822215] [2021-11-20 05:53:59,505 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:53:59,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 05:53:59,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:53:59,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 05:53:59,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:53:59,506 INFO L87 Difference]: Start difference. First operand 154 states and 172 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 05:53:59,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:53:59,841 INFO L93 Difference]: Finished difference Result 177 states and 189 transitions. [2021-11-20 05:53:59,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 05:53:59,841 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 31 [2021-11-20 05:53:59,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:53:59,843 INFO L225 Difference]: With dead ends: 177 [2021-11-20 05:53:59,843 INFO L226 Difference]: Without dead ends: 177 [2021-11-20 05:53:59,844 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 56 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:53:59,845 INFO L933 BasicCegarLoop]: 99 mSDtfsCounter, 155 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 05:53:59,845 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [155 Valid, 203 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 05:53:59,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2021-11-20 05:53:59,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 153. [2021-11-20 05:53:59,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 107 states have (on average 1.4953271028037383) internal successors, (160), 141 states have internal predecessors, (160), 5 states have call successors, (5), 5 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2021-11-20 05:53:59,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 171 transitions. [2021-11-20 05:53:59,853 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 171 transitions. Word has length 31 [2021-11-20 05:53:59,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:53:59,853 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 171 transitions. [2021-11-20 05:53:59,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 05:53:59,854 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 171 transitions. [2021-11-20 05:53:59,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-20 05:53:59,855 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:53:59,855 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:53:59,876 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-20 05:54:00,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:54:00,070 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ldv_hid_set_drvdataErr0REQUIRES_VIOLATION, ldv_hid_set_drvdataErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION (and 47 more)] === [2021-11-20 05:54:00,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:54:00,070 INFO L85 PathProgramCache]: Analyzing trace with hash 414602103, now seen corresponding path program 1 times [2021-11-20 05:54:00,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:54:00,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [205850571] [2021-11-20 05:54:00,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:54:00,071 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:54:00,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:54:00,073 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:54:00,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-20 05:54:00,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:00,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-20 05:54:00,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:54:00,376 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-20 05:54:00,376 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:54:00,507 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-11-20 05:54:00,830 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-20 05:54:00,831 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:54:00,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [205850571] [2021-11-20 05:54:00,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [205850571] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:54:00,831 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 05:54:00,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2021-11-20 05:54:00,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747226015] [2021-11-20 05:54:00,832 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 05:54:00,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-20 05:54:00,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:54:00,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-20 05:54:00,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-11-20 05:54:00,834 INFO L87 Difference]: Start difference. First operand 153 states and 171 transitions. Second operand has 12 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 10 states have internal predecessors, (37), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2021-11-20 05:54:01,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:54:01,880 INFO L93 Difference]: Finished difference Result 159 states and 176 transitions. [2021-11-20 05:54:01,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 05:54:01,881 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 10 states have internal predecessors, (37), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 31 [2021-11-20 05:54:01,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:54:01,883 INFO L225 Difference]: With dead ends: 159 [2021-11-20 05:54:01,883 INFO L226 Difference]: Without dead ends: 159 [2021-11-20 05:54:01,884 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-11-20 05:54:01,884 INFO L933 BasicCegarLoop]: 106 mSDtfsCounter, 277 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 632 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:54:01,885 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [277 Valid, 632 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-20 05:54:01,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-11-20 05:54:01,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 152. [2021-11-20 05:54:01,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 107 states have (on average 1.485981308411215) internal successors, (159), 140 states have internal predecessors, (159), 5 states have call successors, (5), 5 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2021-11-20 05:54:01,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 170 transitions. [2021-11-20 05:54:01,894 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 170 transitions. Word has length 31 [2021-11-20 05:54:01,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:54:01,895 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 170 transitions. [2021-11-20 05:54:01,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 10 states have internal predecessors, (37), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2021-11-20 05:54:01,895 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 170 transitions. [2021-11-20 05:54:01,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-20 05:54:01,896 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:54:01,896 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:54:01,927 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-20 05:54:02,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:54:02,115 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_FREE === [ldv_hid_set_drvdataErr0REQUIRES_VIOLATION, ldv_hid_set_drvdataErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION (and 47 more)] === [2021-11-20 05:54:02,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:54:02,115 INFO L85 PathProgramCache]: Analyzing trace with hash -2015159051, now seen corresponding path program 1 times [2021-11-20 05:54:02,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:54:02,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [411500280] [2021-11-20 05:54:02,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:54:02,116 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:54:02,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:54:02,118 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:54:02,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-20 05:54:02,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:02,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-20 05:54:02,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:54:02,211 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 05:54:02,341 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-20 05:54:02,342 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 37 [2021-11-20 05:54:02,660 INFO L354 Elim1Store]: treesize reduction 20, result has 28.6 percent of original size [2021-11-20 05:54:02,660 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 36 [2021-11-20 05:54:02,730 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 05:54:02,730 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:54:11,219 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:54:11,219 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:54:11,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [411500280] [2021-11-20 05:54:11,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [411500280] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:54:11,219 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 05:54:11,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2021-11-20 05:54:11,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286688519] [2021-11-20 05:54:11,220 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 05:54:11,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-20 05:54:11,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:54:11,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-20 05:54:11,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=163, Unknown=4, NotChecked=0, Total=210 [2021-11-20 05:54:11,221 INFO L87 Difference]: Start difference. First operand 152 states and 170 transitions. Second operand has 15 states, 14 states have (on average 3.0) internal successors, (42), 12 states have internal predecessors, (42), 4 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2021-11-20 05:54:17,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:54:17,961 INFO L93 Difference]: Finished difference Result 155 states and 173 transitions. [2021-11-20 05:54:17,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-20 05:54:17,961 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.0) internal successors, (42), 12 states have internal predecessors, (42), 4 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) Word has length 31 [2021-11-20 05:54:17,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:54:17,963 INFO L225 Difference]: With dead ends: 155 [2021-11-20 05:54:17,963 INFO L226 Difference]: Without dead ends: 155 [2021-11-20 05:54:17,964 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 42 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 14.4s TimeCoverageRelationStatistics Valid=48, Invalid=187, Unknown=5, NotChecked=0, Total=240 [2021-11-20 05:54:17,964 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 13 mSDsluCounter, 597 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 712 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 186 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-20 05:54:17,965 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 712 Invalid, 508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 318 Invalid, 0 Unknown, 186 Unchecked, 0.7s Time] [2021-11-20 05:54:17,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-11-20 05:54:17,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2021-11-20 05:54:17,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 110 states have (on average 1.4727272727272727) internal successors, (162), 143 states have internal predecessors, (162), 5 states have call successors, (5), 5 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2021-11-20 05:54:17,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 173 transitions. [2021-11-20 05:54:17,972 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 173 transitions. Word has length 31 [2021-11-20 05:54:17,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:54:17,973 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 173 transitions. [2021-11-20 05:54:17,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.0) internal successors, (42), 12 states have internal predecessors, (42), 4 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2021-11-20 05:54:17,973 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 173 transitions. [2021-11-20 05:54:17,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-20 05:54:17,974 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:54:17,974 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:54:17,998 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-20 05:54:18,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:54:18,189 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATION === [ldv_hid_set_drvdataErr0REQUIRES_VIOLATION, ldv_hid_set_drvdataErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION (and 47 more)] === [2021-11-20 05:54:18,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:54:18,190 INFO L85 PathProgramCache]: Analyzing trace with hash -999337641, now seen corresponding path program 1 times [2021-11-20 05:54:18,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:54:18,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1117270023] [2021-11-20 05:54:18,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:54:18,191 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:54:18,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:54:18,192 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:54:18,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-20 05:54:18,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:18,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-20 05:54:18,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:54:18,489 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-11-20 05:54:18,583 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2021-11-20 05:54:18,644 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-20 05:54:18,644 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:54:18,902 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-20 05:54:18,903 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:54:18,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1117270023] [2021-11-20 05:54:18,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1117270023] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-20 05:54:18,903 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 05:54:18,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 13 [2021-11-20 05:54:18,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712580370] [2021-11-20 05:54:18,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:54:18,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 05:54:18,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:54:18,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 05:54:18,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-11-20 05:54:18,908 INFO L87 Difference]: Start difference. First operand 155 states and 173 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 05:54:19,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:54:19,918 INFO L93 Difference]: Finished difference Result 215 states and 230 transitions. [2021-11-20 05:54:19,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 05:54:19,919 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 33 [2021-11-20 05:54:19,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:54:19,921 INFO L225 Difference]: With dead ends: 215 [2021-11-20 05:54:19,921 INFO L226 Difference]: Without dead ends: 215 [2021-11-20 05:54:19,922 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 50 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2021-11-20 05:54:19,923 INFO L933 BasicCegarLoop]: 91 mSDtfsCounter, 334 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-20 05:54:19,923 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [334 Valid, 397 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-20 05:54:19,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2021-11-20 05:54:19,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 154. [2021-11-20 05:54:19,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 110 states have (on average 1.4636363636363636) internal successors, (161), 142 states have internal predecessors, (161), 5 states have call successors, (5), 5 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2021-11-20 05:54:19,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 172 transitions. [2021-11-20 05:54:19,931 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 172 transitions. Word has length 33 [2021-11-20 05:54:19,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:54:19,932 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 172 transitions. [2021-11-20 05:54:19,932 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 05:54:19,932 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 172 transitions. [2021-11-20 05:54:19,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-20 05:54:19,933 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:54:19,933 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:54:19,956 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-11-20 05:54:20,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:54:20,147 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ldv_hid_set_drvdataErr0REQUIRES_VIOLATION, ldv_hid_set_drvdataErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION (and 47 more)] === [2021-11-20 05:54:20,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:54:20,147 INFO L85 PathProgramCache]: Analyzing trace with hash -999337640, now seen corresponding path program 1 times [2021-11-20 05:54:20,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:54:20,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [829839840] [2021-11-20 05:54:20,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:54:20,148 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:54:20,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:54:20,150 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:54:20,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-20 05:54:20,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:20,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-20 05:54:20,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:54:20,526 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-20 05:54:20,535 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-11-20 05:54:20,680 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-11-20 05:54:20,685 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2021-11-20 05:54:20,790 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-20 05:54:20,790 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:54:21,499 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-11-20 05:54:21,789 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-20 05:54:21,789 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:54:21,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [829839840] [2021-11-20 05:54:21,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [829839840] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:54:21,790 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 05:54:21,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 19 [2021-11-20 05:54:21,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112668798] [2021-11-20 05:54:21,790 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 05:54:21,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-20 05:54:21,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:54:21,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-20 05:54:21,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2021-11-20 05:54:21,792 INFO L87 Difference]: Start difference. First operand 154 states and 172 transitions. Second operand has 20 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 17 states have internal predecessors, (41), 4 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2021-11-20 05:54:24,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:54:24,368 INFO L93 Difference]: Finished difference Result 209 states and 228 transitions. [2021-11-20 05:54:24,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-20 05:54:24,369 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 17 states have internal predecessors, (41), 4 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 33 [2021-11-20 05:54:24,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:54:24,370 INFO L225 Difference]: With dead ends: 209 [2021-11-20 05:54:24,370 INFO L226 Difference]: Without dead ends: 209 [2021-11-20 05:54:24,371 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=113, Invalid=487, Unknown=0, NotChecked=0, Total=600 [2021-11-20 05:54:24,371 INFO L933 BasicCegarLoop]: 88 mSDtfsCounter, 950 mSDsluCounter, 834 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 951 SdHoareTripleChecker+Valid, 922 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-20 05:54:24,372 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [951 Valid, 922 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-11-20 05:54:24,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2021-11-20 05:54:24,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 153. [2021-11-20 05:54:24,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 110 states have (on average 1.4545454545454546) internal successors, (160), 141 states have internal predecessors, (160), 5 states have call successors, (5), 5 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2021-11-20 05:54:24,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 171 transitions. [2021-11-20 05:54:24,379 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 171 transitions. Word has length 33 [2021-11-20 05:54:24,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:54:24,380 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 171 transitions. [2021-11-20 05:54:24,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 17 states have internal predecessors, (41), 4 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2021-11-20 05:54:24,380 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 171 transitions. [2021-11-20 05:54:24,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-20 05:54:24,381 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:54:24,381 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-20 05:54:24,407 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-11-20 05:54:24,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:54:24,595 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr47ASSERT_VIOLATIONMEMORY_LEAK === [ldv_hid_set_drvdataErr0REQUIRES_VIOLATION, ldv_hid_set_drvdataErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION (and 47 more)] === [2021-11-20 05:54:24,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:54:24,595 INFO L85 PathProgramCache]: Analyzing trace with hash 462409528, now seen corresponding path program 1 times [2021-11-20 05:54:24,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:54:24,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [231294285] [2021-11-20 05:54:24,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:54:24,596 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:54:24,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:54:24,597 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:54:24,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-20 05:54:24,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:24,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-20 05:54:24,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:54:27,366 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-20 05:54:27,367 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:54:36,096 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_old_#valid#1_BEFORE_CALL_11| (Array (_ BitVec 32) (_ BitVec 1))) (|v_ULTIMATE.start_entry_point_~hdev~0#1.base_BEFORE_CALL_22| (_ BitVec 32))) (or (= (store (store |c_#valid| |c_ldv_malloc_#res.base| (_ bv0 1)) |v_ULTIMATE.start_entry_point_~hdev~0#1.base_BEFORE_CALL_22| (_ bv0 1)) |v_ULTIMATE.start_main_old_#valid#1_BEFORE_CALL_11|) (exists ((|v_ULTIMATE.start_entry_point_#t~ret54#1.base_68| (_ BitVec 32))) (and (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_old(#valid)| |v_ULTIMATE.start_entry_point_#t~ret54#1.base_68|))))))) (not (= (store (store |c_old(#valid)| |v_ULTIMATE.start_entry_point_#t~ret54#1.base_68| (_ bv0 1)) |v_ULTIMATE.start_entry_point_~hdev~0#1.base_BEFORE_CALL_22| (_ bv0 1)) |v_ULTIMATE.start_main_old_#valid#1_BEFORE_CALL_11|)))))) is different from false [2021-11-20 05:54:36,272 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_old_#valid#1_BEFORE_CALL_11| (Array (_ BitVec 32) (_ BitVec 1))) (|v_ldv_malloc_#res.base_219| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~hdev~0#1.base_BEFORE_CALL_22| (_ BitVec 32))) (or (exists ((|v_ULTIMATE.start_entry_point_#t~ret54#1.base_68| (_ BitVec 32))) (and (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_old(#valid)| |v_ULTIMATE.start_entry_point_#t~ret54#1.base_68|))))))) (not (= (store (store |c_old(#valid)| |v_ULTIMATE.start_entry_point_#t~ret54#1.base_68| (_ bv0 1)) |v_ULTIMATE.start_entry_point_~hdev~0#1.base_BEFORE_CALL_22| (_ bv0 1)) |v_ULTIMATE.start_main_old_#valid#1_BEFORE_CALL_11|)))) (= (store (store |c_#valid| |v_ldv_malloc_#res.base_219| (_ bv0 1)) |v_ULTIMATE.start_entry_point_~hdev~0#1.base_BEFORE_CALL_22| (_ bv0 1)) |v_ULTIMATE.start_main_old_#valid#1_BEFORE_CALL_11|) (not (= (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| |v_ldv_malloc_#res.base_219|))))))) (_ bv0 1))))) is different from false [2021-11-20 05:54:36,375 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_old_#valid#1_BEFORE_CALL_11| (Array (_ BitVec 32) (_ BitVec 1))) (|v_ldv_malloc_#res.base_219| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~hdev~0#1.base_BEFORE_CALL_22| (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| |v_ldv_malloc_#res.base_219|)))))))))) (exists ((|v_ULTIMATE.start_entry_point_#t~ret54#1.base_68| (_ BitVec 32))) (and (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_old(#valid)| |v_ULTIMATE.start_entry_point_#t~ret54#1.base_68|))))))) (not (= (store (store |c_old(#valid)| |v_ULTIMATE.start_entry_point_#t~ret54#1.base_68| (_ bv0 1)) |v_ULTIMATE.start_entry_point_~hdev~0#1.base_BEFORE_CALL_22| (_ bv0 1)) |v_ULTIMATE.start_main_old_#valid#1_BEFORE_CALL_11|)))) (= (store (store |c_#valid| |v_ldv_malloc_#res.base_219| (_ bv0 1)) |v_ULTIMATE.start_entry_point_~hdev~0#1.base_BEFORE_CALL_22| (_ bv0 1)) |v_ULTIMATE.start_main_old_#valid#1_BEFORE_CALL_11|))) is different from false [2021-11-20 05:54:42,134 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_entry_point_#t~ret54#1.base_68| (_ BitVec 32)) (|v_ULTIMATE.start_main_old_#valid#1_BEFORE_CALL_12| (Array (_ BitVec 32) (_ BitVec 1)))) (or (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_entry_point_#t~ret54#1.base_68|))))) (= (store (store |c_#valid| |v_ULTIMATE.start_entry_point_#t~ret54#1.base_68| (_ bv0 1)) |c_ldv_malloc_#res.base| (_ bv0 1)) |v_ULTIMATE.start_main_old_#valid#1_BEFORE_CALL_12|) (exists ((|v_ULTIMATE.start_entry_point_#t~ret53#1.base_64| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_#t~ret54#1.base_68| (_ BitVec 32))) (let ((.cse0 (store |c_old(#valid)| |v_ULTIMATE.start_entry_point_#t~ret53#1.base_64| (_ bv1 1)))) (and (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (select .cse0 |v_ULTIMATE.start_entry_point_#t~ret54#1.base_68|)))))) (not (= |v_ULTIMATE.start_main_old_#valid#1_BEFORE_CALL_12| (store (store .cse0 |v_ULTIMATE.start_entry_point_#t~ret54#1.base_68| (_ bv0 1)) |v_ULTIMATE.start_entry_point_#t~ret53#1.base_64| (_ bv0 1)))) (= (_ bv0 1) (bvneg (bvneg (bvneg (select |c_old(#valid)| |v_ULTIMATE.start_entry_point_#t~ret53#1.base_64|)))))))))) is different from false [2021-11-20 05:54:43,100 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 10 not checked. [2021-11-20 05:54:43,100 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:54:43,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [231294285] [2021-11-20 05:54:43,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [231294285] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:54:43,100 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 05:54:43,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 14] total 21 [2021-11-20 05:54:43,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383415839] [2021-11-20 05:54:43,101 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 05:54:43,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-20 05:54:43,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:54:43,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-20 05:54:43,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=256, Unknown=12, NotChecked=140, Total=462 [2021-11-20 05:54:43,102 INFO L87 Difference]: Start difference. First operand 153 states and 171 transitions. Second operand has 22 states, 20 states have (on average 2.3) internal successors, (46), 17 states have internal predecessors, (46), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-20 05:54:44,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:54:44,666 INFO L93 Difference]: Finished difference Result 155 states and 172 transitions. [2021-11-20 05:54:44,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-20 05:54:44,667 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 2.3) internal successors, (46), 17 states have internal predecessors, (46), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 33 [2021-11-20 05:54:44,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:54:44,669 INFO L225 Difference]: With dead ends: 155 [2021-11-20 05:54:44,669 INFO L226 Difference]: Without dead ends: 141 [2021-11-20 05:54:44,669 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 17.0s TimeCoverageRelationStatistics Valid=61, Invalid=285, Unknown=12, NotChecked=148, Total=506 [2021-11-20 05:54:44,670 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 13 mSDsluCounter, 952 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1066 SdHoareTripleChecker+Invalid, 960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 525 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-20 05:54:44,670 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 1066 Invalid, 960 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 430 Invalid, 0 Unknown, 525 Unchecked, 1.3s Time] [2021-11-20 05:54:44,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-11-20 05:54:44,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2021-11-20 05:54:44,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 99 states have (on average 1.494949494949495) internal successors, (148), 130 states have internal predecessors, (148), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-20 05:54:44,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 158 transitions. [2021-11-20 05:54:44,676 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 158 transitions. Word has length 33 [2021-11-20 05:54:44,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:54:44,676 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 158 transitions. [2021-11-20 05:54:44,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 2.3) internal successors, (46), 17 states have internal predecessors, (46), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-20 05:54:44,677 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 158 transitions. [2021-11-20 05:54:44,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-20 05:54:44,677 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:54:44,677 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:54:44,695 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-11-20 05:54:44,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:54:44,891 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ldv_hid_set_drvdataErr0REQUIRES_VIOLATION, ldv_hid_set_drvdataErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION (and 47 more)] === [2021-11-20 05:54:44,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:54:44,891 INFO L85 PathProgramCache]: Analyzing trace with hash -914695768, now seen corresponding path program 1 times [2021-11-20 05:54:44,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:54:44,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1255627913] [2021-11-20 05:54:44,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:54:44,892 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:54:44,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:54:44,895 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:54:44,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-11-20 05:54:45,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:45,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 42 conjunts are in the unsatisfiable core [2021-11-20 05:54:45,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:54:45,088 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 05:54:45,306 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-20 05:54:45,306 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 35 [2021-11-20 05:54:45,544 INFO L354 Elim1Store]: treesize reduction 30, result has 45.5 percent of original size [2021-11-20 05:54:45,544 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 38 treesize of output 55 [2021-11-20 05:54:45,668 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 27 [2021-11-20 05:54:46,238 INFO L354 Elim1Store]: treesize reduction 41, result has 18.0 percent of original size [2021-11-20 05:54:46,239 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 75 treesize of output 47 [2021-11-20 05:54:46,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:54:46,405 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 59 [2021-11-20 05:54:46,463 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-20 05:54:46,858 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 114 [2021-11-20 05:54:47,260 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 05:54:47,260 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 112 treesize of output 71 [2021-11-20 05:54:47,436 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 05:54:47,437 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:55:01,488 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_1 (_ BitVec 32)) (|ULTIMATE.start_entry_point_#t~mem57#1.offset| (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse2 (bvadd (_ bv4 32) |c_ULTIMATE.start_entry_point_~intf~2#1.offset|))) (select (select (let ((.cse0 (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~intf~2#1.base|) .cse2))) (store |c_#memory_$Pointer$.base| .cse1 (store (select |c_#memory_$Pointer$.base| .cse1) (bvadd (_ bv7 32) |ULTIMATE.start_entry_point_#t~mem57#1.offset|) v_DerPreprocessor_1))))) (store .cse0 |c_ULTIMATE.start_entry_point_~hdev~0#1.base| (store (select .cse0 |c_ULTIMATE.start_entry_point_~hdev~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_entry_point_~hdev~0#1.offset|) |c_ULTIMATE.start_entry_point_~intf~2#1.base|))) |c_ULTIMATE.start_entry_point_~intf~2#1.base|) .cse2)))))))))))))) (_ bv1 1)))) is different from false [2021-11-20 05:56:00,929 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 05:56:00,929 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:56:00,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1255627913] [2021-11-20 05:56:00,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1255627913] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:56:00,930 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 05:56:00,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15] total 31 [2021-11-20 05:56:00,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001220340] [2021-11-20 05:56:00,931 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 05:56:00,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-11-20 05:56:00,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:56:00,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-11-20 05:56:00,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=812, Unknown=25, NotChecked=58, Total=992 [2021-11-20 05:56:00,934 INFO L87 Difference]: Start difference. First operand 141 states and 158 transitions. Second operand has 32 states, 31 states have (on average 1.6451612903225807) internal successors, (51), 27 states have internal predecessors, (51), 4 states have call successors, (5), 3 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2021-11-20 05:56:01,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:56:01,677 INFO L93 Difference]: Finished difference Result 140 states and 157 transitions. [2021-11-20 05:56:01,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-20 05:56:01,678 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 1.6451612903225807) internal successors, (51), 27 states have internal predecessors, (51), 4 states have call successors, (5), 3 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 34 [2021-11-20 05:56:01,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:56:01,681 INFO L225 Difference]: With dead ends: 140 [2021-11-20 05:56:01,681 INFO L226 Difference]: Without dead ends: 140 [2021-11-20 05:56:01,682 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 70.4s TimeCoverageRelationStatistics Valid=97, Invalid=812, Unknown=25, NotChecked=58, Total=992 [2021-11-20 05:56:01,684 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 4 mSDsluCounter, 1495 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1603 SdHoareTripleChecker+Invalid, 560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 464 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-20 05:56:01,684 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 1603 Invalid, 560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 95 Invalid, 0 Unknown, 464 Unchecked, 0.5s Time] [2021-11-20 05:56:01,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-11-20 05:56:01,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2021-11-20 05:56:01,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 99 states have (on average 1.4848484848484849) internal successors, (147), 129 states have internal predecessors, (147), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-20 05:56:01,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 157 transitions. [2021-11-20 05:56:01,694 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 157 transitions. Word has length 34 [2021-11-20 05:56:01,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:56:01,695 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 157 transitions. [2021-11-20 05:56:01,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 1.6451612903225807) internal successors, (51), 27 states have internal predecessors, (51), 4 states have call successors, (5), 3 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2021-11-20 05:56:01,697 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 157 transitions. [2021-11-20 05:56:01,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-20 05:56:01,698 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:56:01,698 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:56:01,721 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-11-20 05:56:01,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:56:01,915 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [ldv_hid_set_drvdataErr0REQUIRES_VIOLATION, ldv_hid_set_drvdataErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION (and 47 more)] === [2021-11-20 05:56:01,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:56:01,916 INFO L85 PathProgramCache]: Analyzing trace with hash -914695767, now seen corresponding path program 1 times [2021-11-20 05:56:01,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:56:01,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1454240428] [2021-11-20 05:56:01,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:56:01,917 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:56:01,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:56:01,919 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:56:01,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-11-20 05:56:02,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:56:02,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 49 conjunts are in the unsatisfiable core [2021-11-20 05:56:02,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:56:02,201 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 05:56:02,580 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-20 05:56:02,580 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 33 [2021-11-20 05:56:02,923 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 05:56:03,156 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-11-20 05:56:03,156 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 33 [2021-11-20 05:56:03,316 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-20 05:56:03,342 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2021-11-20 05:56:04,078 INFO L354 Elim1Store]: treesize reduction 41, result has 18.0 percent of original size [2021-11-20 05:56:04,079 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 115 treesize of output 69 [2021-11-20 05:56:04,122 INFO L354 Elim1Store]: treesize reduction 59, result has 13.2 percent of original size [2021-11-20 05:56:04,122 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 44 [2021-11-20 05:56:04,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:56:04,264 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 54 [2021-11-20 05:56:04,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:56:04,274 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 85 [2021-11-20 05:56:05,446 INFO L354 Elim1Store]: treesize reduction 30, result has 9.1 percent of original size [2021-11-20 05:56:05,447 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 102 treesize of output 54 [2021-11-20 05:56:05,480 INFO L354 Elim1Store]: treesize reduction 18, result has 14.3 percent of original size [2021-11-20 05:56:05,480 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 35 [2021-11-20 05:56:05,633 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 05:56:05,633 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:56:10,288 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_DerPreprocessor_3 (_ BitVec 32)) (|ULTIMATE.start_entry_point_#t~mem57#1.offset| (_ BitVec 32))) (let ((.cse0 (select (select (let ((.cse1 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_#t~mem57#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_#t~mem57#1.base|) (bvadd (_ bv7 32) |ULTIMATE.start_entry_point_#t~mem57#1.offset|) v_DerPreprocessor_3)))) (store .cse1 |c_ULTIMATE.start_entry_point_~hdev~0#1.base| (store (select .cse1 |c_ULTIMATE.start_entry_point_~hdev~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_entry_point_~hdev~0#1.offset|) (bvadd (_ bv8 32) |c_ULTIMATE.start_entry_point_~intf~2#1.offset|)))) |c_ULTIMATE.start_entry_point_~intf~2#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_entry_point_~intf~2#1.offset|)))) (bvule (bvadd (_ bv7 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_DerPreprocessor_3 (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (|ULTIMATE.start_entry_point_#t~mem57#1.offset| (_ BitVec 32))) (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_entry_point_~hdev~0#1.offset|)) (.cse4 (bvadd (_ bv7 32) |ULTIMATE.start_entry_point_#t~mem57#1.offset|)) (.cse5 (bvadd (_ bv4 32) |c_ULTIMATE.start_entry_point_~intf~2#1.offset|))) (bvule (bvadd (_ bv8 32) (select (select (let ((.cse2 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_#t~mem57#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_#t~mem57#1.base|) .cse4 v_DerPreprocessor_3)))) (store .cse2 |c_ULTIMATE.start_entry_point_~hdev~0#1.base| (store (select .cse2 |c_ULTIMATE.start_entry_point_~hdev~0#1.base|) .cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_entry_point_~intf~2#1.offset|)))) |c_ULTIMATE.start_entry_point_~intf~2#1.base|) .cse5)) (select |c_#length| (select (select (let ((.cse6 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_#t~mem57#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_#t~mem57#1.base|) .cse4 v_DerPreprocessor_2)))) (store .cse6 |c_ULTIMATE.start_entry_point_~hdev~0#1.base| (store (select .cse6 |c_ULTIMATE.start_entry_point_~hdev~0#1.base|) .cse3 |c_ULTIMATE.start_entry_point_~intf~2#1.base|))) |c_ULTIMATE.start_entry_point_~intf~2#1.base|) .cse5)))))) is different from false [2021-11-20 05:56:12,398 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_DerPreprocessor_3 (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (|ULTIMATE.start_entry_point_#t~mem57#1.offset| (_ BitVec 32))) (let ((.cse4 (bvadd (_ bv4 32) |c_ULTIMATE.start_entry_point_~intf~2#1.offset|))) (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_entry_point_~hdev~0#1.offset|)) (.cse2 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~intf~2#1.base|) .cse4)) (.cse3 (bvadd (_ bv7 32) |ULTIMATE.start_entry_point_#t~mem57#1.offset|))) (bvule (bvadd (select (select (let ((.cse0 (store |c_#memory_$Pointer$.offset| .cse2 (store (select |c_#memory_$Pointer$.offset| .cse2) .cse3 v_DerPreprocessor_3)))) (store .cse0 |c_ULTIMATE.start_entry_point_~hdev~0#1.base| (store (select .cse0 |c_ULTIMATE.start_entry_point_~hdev~0#1.base|) .cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_entry_point_~intf~2#1.offset|)))) |c_ULTIMATE.start_entry_point_~intf~2#1.base|) .cse4) (_ bv8 32)) (select |c_#length| (select (select (let ((.cse5 (store |c_#memory_$Pointer$.base| .cse2 (store (select |c_#memory_$Pointer$.base| .cse2) .cse3 v_DerPreprocessor_2)))) (store .cse5 |c_ULTIMATE.start_entry_point_~hdev~0#1.base| (store (select .cse5 |c_ULTIMATE.start_entry_point_~hdev~0#1.base|) .cse1 |c_ULTIMATE.start_entry_point_~intf~2#1.base|))) |c_ULTIMATE.start_entry_point_~intf~2#1.base|) .cse4)))))) (forall ((v_DerPreprocessor_3 (_ BitVec 32)) (|ULTIMATE.start_entry_point_#t~mem57#1.offset| (_ BitVec 32))) (let ((.cse6 (let ((.cse9 (bvadd (_ bv4 32) |c_ULTIMATE.start_entry_point_~intf~2#1.offset|))) (select (select (let ((.cse7 (let ((.cse8 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~intf~2#1.base|) .cse9))) (store |c_#memory_$Pointer$.offset| .cse8 (store (select |c_#memory_$Pointer$.offset| .cse8) (bvadd (_ bv7 32) |ULTIMATE.start_entry_point_#t~mem57#1.offset|) v_DerPreprocessor_3))))) (store .cse7 |c_ULTIMATE.start_entry_point_~hdev~0#1.base| (store (select .cse7 |c_ULTIMATE.start_entry_point_~hdev~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_entry_point_~hdev~0#1.offset|) (bvadd (_ bv8 32) |c_ULTIMATE.start_entry_point_~intf~2#1.offset|)))) |c_ULTIMATE.start_entry_point_~intf~2#1.base|) .cse9)))) (bvule (bvadd .cse6 (_ bv7 32)) (bvadd .cse6 (_ bv8 32)))))) is different from false [2021-11-20 05:56:18,505 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 76 [2021-11-20 05:56:22,357 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 73 [2021-11-20 05:56:44,751 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:56:44,752 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:56:44,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1454240428] [2021-11-20 05:56:44,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1454240428] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:56:44,752 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 05:56:44,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 20] total 37 [2021-11-20 05:56:44,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5625474] [2021-11-20 05:56:44,753 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 05:56:44,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-11-20 05:56:44,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:56:44,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-11-20 05:56:44,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1154, Unknown=4, NotChecked=138, Total=1406 [2021-11-20 05:56:44,755 INFO L87 Difference]: Start difference. First operand 140 states and 157 transitions. Second operand has 38 states, 37 states have (on average 1.4324324324324325) internal successors, (53), 31 states have internal predecessors, (53), 5 states have call successors, (5), 4 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2021-11-20 05:56:51,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:56:51,833 INFO L93 Difference]: Finished difference Result 139 states and 156 transitions. [2021-11-20 05:56:51,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-20 05:56:51,833 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 1.4324324324324325) internal successors, (53), 31 states have internal predecessors, (53), 5 states have call successors, (5), 4 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 34 [2021-11-20 05:56:51,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:56:51,835 INFO L225 Difference]: With dead ends: 139 [2021-11-20 05:56:51,835 INFO L226 Difference]: Without dead ends: 139 [2021-11-20 05:56:51,836 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 28.2s TimeCoverageRelationStatistics Valid=154, Invalid=1490, Unknown=4, NotChecked=158, Total=1806 [2021-11-20 05:56:51,837 INFO L933 BasicCegarLoop]: 107 mSDtfsCounter, 26 mSDsluCounter, 1777 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 1884 SdHoareTripleChecker+Invalid, 986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 608 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-20 05:56:51,837 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 1884 Invalid, 986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 375 Invalid, 0 Unknown, 608 Unchecked, 2.4s Time] [2021-11-20 05:56:51,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-11-20 05:56:51,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2021-11-20 05:56:51,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 99 states have (on average 1.4747474747474747) internal successors, (146), 128 states have internal predecessors, (146), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-20 05:56:51,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 156 transitions. [2021-11-20 05:56:51,843 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 156 transitions. Word has length 34 [2021-11-20 05:56:51,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:56:51,844 INFO L470 AbstractCegarLoop]: Abstraction has 139 states and 156 transitions. [2021-11-20 05:56:51,844 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 1.4324324324324325) internal successors, (53), 31 states have internal predecessors, (53), 5 states have call successors, (5), 4 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2021-11-20 05:56:51,844 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 156 transitions. [2021-11-20 05:56:51,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-20 05:56:51,845 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:56:51,845 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:56:51,859 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-11-20 05:56:52,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:56:52,055 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ldv_hid_set_drvdataErr0REQUIRES_VIOLATION === [ldv_hid_set_drvdataErr0REQUIRES_VIOLATION, ldv_hid_set_drvdataErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION (and 47 more)] === [2021-11-20 05:56:52,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:56:52,055 INFO L85 PathProgramCache]: Analyzing trace with hash 2008588784, now seen corresponding path program 1 times [2021-11-20 05:56:52,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:56:52,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1514180033] [2021-11-20 05:56:52,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:56:52,056 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:56:52,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:56:52,057 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:56:52,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-11-20 05:56:52,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:56:52,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-20 05:56:52,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:56:52,323 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-20 05:56:52,323 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:56:52,444 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-20 05:56:52,444 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:56:52,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1514180033] [2021-11-20 05:56:52,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1514180033] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:56:52,445 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:56:52,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-20 05:56:52,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032286646] [2021-11-20 05:56:52,445 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:56:52,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 05:56:52,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:56:52,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 05:56:52,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-20 05:56:52,447 INFO L87 Difference]: Start difference. First operand 139 states and 156 transitions. Second operand has 6 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 05:56:53,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:56:53,177 INFO L93 Difference]: Finished difference Result 162 states and 172 transitions. [2021-11-20 05:56:53,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 05:56:53,178 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 38 [2021-11-20 05:56:53,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:56:53,179 INFO L225 Difference]: With dead ends: 162 [2021-11-20 05:56:53,179 INFO L226 Difference]: Without dead ends: 162 [2021-11-20 05:56:53,180 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 68 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-20 05:56:53,181 INFO L933 BasicCegarLoop]: 89 mSDtfsCounter, 149 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-20 05:56:53,181 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [149 Valid, 327 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-20 05:56:53,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-11-20 05:56:53,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 138. [2021-11-20 05:56:53,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 99 states have (on average 1.4545454545454546) internal successors, (144), 127 states have internal predecessors, (144), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-20 05:56:53,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 154 transitions. [2021-11-20 05:56:53,187 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 154 transitions. Word has length 38 [2021-11-20 05:56:53,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:56:53,187 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 154 transitions. [2021-11-20 05:56:53,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 05:56:53,188 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 154 transitions. [2021-11-20 05:56:53,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-20 05:56:53,188 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:56:53,189 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:56:53,211 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-11-20 05:56:53,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:56:53,412 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ldv_hid_set_drvdataErr1REQUIRES_VIOLATION === [ldv_hid_set_drvdataErr0REQUIRES_VIOLATION, ldv_hid_set_drvdataErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION (and 47 more)] === [2021-11-20 05:56:53,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:56:53,413 INFO L85 PathProgramCache]: Analyzing trace with hash 2008588785, now seen corresponding path program 1 times [2021-11-20 05:56:53,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:56:53,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1663665475] [2021-11-20 05:56:53,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:56:53,415 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:56:53,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:56:53,416 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:56:53,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-11-20 05:56:53,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:56:53,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-20 05:56:53,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:56:53,951 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-20 05:56:53,951 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:56:54,602 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2021-11-20 05:56:55,328 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-20 05:56:55,328 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:56:55,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1663665475] [2021-11-20 05:56:55,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1663665475] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:56:55,328 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 05:56:55,329 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-11-20 05:56:55,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740292409] [2021-11-20 05:56:55,329 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 05:56:55,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-20 05:56:55,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:56:55,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-20 05:56:55,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2021-11-20 05:56:55,331 INFO L87 Difference]: Start difference. First operand 138 states and 154 transitions. Second operand has 16 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 12 states have internal predecessors, (49), 5 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2021-11-20 05:56:57,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:56:57,365 INFO L93 Difference]: Finished difference Result 137 states and 152 transitions. [2021-11-20 05:56:57,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 05:56:57,366 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 12 states have internal predecessors, (49), 5 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 38 [2021-11-20 05:56:57,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:56:57,368 INFO L225 Difference]: With dead ends: 137 [2021-11-20 05:56:57,368 INFO L226 Difference]: Without dead ends: 137 [2021-11-20 05:56:57,368 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2021-11-20 05:56:57,369 INFO L933 BasicCegarLoop]: 88 mSDtfsCounter, 270 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 654 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-20 05:56:57,370 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [270 Valid, 654 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-20 05:56:57,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-11-20 05:56:57,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2021-11-20 05:56:57,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 99 states have (on average 1.4343434343434343) internal successors, (142), 126 states have internal predecessors, (142), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-20 05:56:57,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 152 transitions. [2021-11-20 05:56:57,374 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 152 transitions. Word has length 38 [2021-11-20 05:56:57,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:56:57,375 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 152 transitions. [2021-11-20 05:56:57,375 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 12 states have internal predecessors, (49), 5 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2021-11-20 05:56:57,375 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 152 transitions. [2021-11-20 05:56:57,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-20 05:56:57,376 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:56:57,376 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:56:57,398 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-11-20 05:56:57,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:56:57,587 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATION === [ldv_hid_set_drvdataErr0REQUIRES_VIOLATION, ldv_hid_set_drvdataErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION (and 47 more)] === [2021-11-20 05:56:57,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:56:57,587 INFO L85 PathProgramCache]: Analyzing trace with hash 2136628835, now seen corresponding path program 1 times [2021-11-20 05:56:57,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:56:57,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1605143512] [2021-11-20 05:56:57,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:56:57,588 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:56:57,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:56:57,589 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:56:57,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-11-20 05:56:57,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:56:57,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 05:56:57,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:56:57,784 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 05:56:57,861 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-20 05:56:57,862 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:56:57,963 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-20 05:56:57,963 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:56:57,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1605143512] [2021-11-20 05:56:57,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1605143512] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:56:57,963 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:56:57,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-20 05:56:57,963 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784507057] [2021-11-20 05:56:57,963 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:56:57,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 05:56:57,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:56:57,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 05:56:57,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-20 05:56:57,965 INFO L87 Difference]: Start difference. First operand 137 states and 152 transitions. Second operand has 6 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 05:56:58,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:56:58,524 INFO L93 Difference]: Finished difference Result 207 states and 228 transitions. [2021-11-20 05:56:58,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 05:56:58,525 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 39 [2021-11-20 05:56:58,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:56:58,527 INFO L225 Difference]: With dead ends: 207 [2021-11-20 05:56:58,527 INFO L226 Difference]: Without dead ends: 207 [2021-11-20 05:56:58,527 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 69 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-20 05:56:58,528 INFO L933 BasicCegarLoop]: 117 mSDtfsCounter, 241 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-20 05:56:58,528 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [241 Valid, 344 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-20 05:56:58,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2021-11-20 05:56:58,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 133. [2021-11-20 05:56:58,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 99 states have (on average 1.393939393939394) internal successors, (138), 122 states have internal predecessors, (138), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-20 05:56:58,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 148 transitions. [2021-11-20 05:56:58,535 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 148 transitions. Word has length 39 [2021-11-20 05:56:58,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:56:58,535 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 148 transitions. [2021-11-20 05:56:58,535 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 05:56:58,536 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 148 transitions. [2021-11-20 05:56:58,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-20 05:56:58,536 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:56:58,537 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:56:58,567 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (30)] Ended with exit code 0 [2021-11-20 05:56:58,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:56:58,752 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATION === [ldv_hid_set_drvdataErr0REQUIRES_VIOLATION, ldv_hid_set_drvdataErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION (and 47 more)] === [2021-11-20 05:56:58,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:56:58,752 INFO L85 PathProgramCache]: Analyzing trace with hash 2136628836, now seen corresponding path program 1 times [2021-11-20 05:56:58,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:56:58,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1937229531] [2021-11-20 05:56:58,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:56:58,754 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:56:58,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:56:58,755 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:56:58,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-11-20 05:56:58,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:56:58,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-20 05:56:58,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:56:59,014 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 05:56:59,182 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-20 05:56:59,182 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:56:59,622 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-20 05:56:59,622 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:56:59,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1937229531] [2021-11-20 05:56:59,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1937229531] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:56:59,622 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:56:59,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-20 05:56:59,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731346468] [2021-11-20 05:56:59,623 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:56:59,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 05:56:59,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:56:59,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 05:56:59,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-20 05:56:59,624 INFO L87 Difference]: Start difference. First operand 133 states and 148 transitions. Second operand has 10 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 10 states have internal predecessors, (32), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 05:57:00,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:57:00,793 INFO L93 Difference]: Finished difference Result 235 states and 254 transitions. [2021-11-20 05:57:00,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 05:57:00,795 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 10 states have internal predecessors, (32), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 39 [2021-11-20 05:57:00,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:57:00,797 INFO L225 Difference]: With dead ends: 235 [2021-11-20 05:57:00,797 INFO L226 Difference]: Without dead ends: 235 [2021-11-20 05:57:00,797 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-11-20 05:57:00,798 INFO L933 BasicCegarLoop]: 134 mSDtfsCounter, 357 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 608 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:57:00,799 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [357 Valid, 608 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-20 05:57:00,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2021-11-20 05:57:00,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 129. [2021-11-20 05:57:00,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 99 states have (on average 1.3535353535353536) internal successors, (134), 118 states have internal predecessors, (134), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-20 05:57:00,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 144 transitions. [2021-11-20 05:57:00,805 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 144 transitions. Word has length 39 [2021-11-20 05:57:00,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:57:00,805 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 144 transitions. [2021-11-20 05:57:00,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 10 states have internal predecessors, (32), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 05:57:00,806 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 144 transitions. [2021-11-20 05:57:00,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-20 05:57:00,807 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:57:00,807 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:57:00,822 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (31)] Ended with exit code 0 [2021-11-20 05:57:01,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:57:01,022 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATION === [ldv_hid_set_drvdataErr0REQUIRES_VIOLATION, ldv_hid_set_drvdataErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION (and 47 more)] === [2021-11-20 05:57:01,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:57:01,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1932189806, now seen corresponding path program 1 times [2021-11-20 05:57:01,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:57:01,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [558265208] [2021-11-20 05:57:01,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:57:01,024 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:57:01,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:57:01,025 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:57:01,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-11-20 05:57:01,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:57:01,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 05:57:01,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:57:01,321 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-20 05:57:01,322 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:57:01,423 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-20 05:57:01,423 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:57:01,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [558265208] [2021-11-20 05:57:01,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [558265208] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:57:01,424 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:57:01,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-20 05:57:01,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57249080] [2021-11-20 05:57:01,424 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:57:01,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 05:57:01,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:57:01,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 05:57:01,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:57:01,425 INFO L87 Difference]: Start difference. First operand 129 states and 144 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 05:57:01,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:57:01,486 INFO L93 Difference]: Finished difference Result 182 states and 198 transitions. [2021-11-20 05:57:01,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 05:57:01,487 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 43 [2021-11-20 05:57:01,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:57:01,488 INFO L225 Difference]: With dead ends: 182 [2021-11-20 05:57:01,488 INFO L226 Difference]: Without dead ends: 182 [2021-11-20 05:57:01,488 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-20 05:57:01,489 INFO L933 BasicCegarLoop]: 156 mSDtfsCounter, 213 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:57:01,489 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [213 Valid, 423 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 05:57:01,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-11-20 05:57:01,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 129. [2021-11-20 05:57:01,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 99 states have (on average 1.3434343434343434) internal successors, (133), 118 states have internal predecessors, (133), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-20 05:57:01,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 143 transitions. [2021-11-20 05:57:01,495 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 143 transitions. Word has length 43 [2021-11-20 05:57:01,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:57:01,495 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 143 transitions. [2021-11-20 05:57:01,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 05:57:01,496 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 143 transitions. [2021-11-20 05:57:01,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-20 05:57:01,496 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:57:01,497 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:57:01,515 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (32)] Ended with exit code 0 [2021-11-20 05:57:01,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:57:01,711 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATION === [ldv_hid_set_drvdataErr0REQUIRES_VIOLATION, ldv_hid_set_drvdataErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION (and 47 more)] === [2021-11-20 05:57:01,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:57:01,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1842074256, now seen corresponding path program 1 times [2021-11-20 05:57:01,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:57:01,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2134940731] [2021-11-20 05:57:01,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:57:01,713 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:57:01,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:57:01,714 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:57:01,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-11-20 05:57:01,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:57:01,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 05:57:01,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:57:02,088 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-20 05:57:02,088 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:57:02,214 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-20 05:57:02,214 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:57:02,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2134940731] [2021-11-20 05:57:02,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2134940731] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:57:02,215 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:57:02,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 3] imperfect sequences [] total 4 [2021-11-20 05:57:02,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522392048] [2021-11-20 05:57:02,215 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:57:02,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 05:57:02,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:57:02,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 05:57:02,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:57:02,217 INFO L87 Difference]: Start difference. First operand 129 states and 143 transitions. Second operand has 5 states, 4 states have (on average 9.25) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 05:57:02,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:57:02,552 INFO L93 Difference]: Finished difference Result 169 states and 177 transitions. [2021-11-20 05:57:02,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 05:57:02,552 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 9.25) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 47 [2021-11-20 05:57:02,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:57:02,554 INFO L225 Difference]: With dead ends: 169 [2021-11-20 05:57:02,554 INFO L226 Difference]: Without dead ends: 169 [2021-11-20 05:57:02,554 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 86 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-20 05:57:02,555 INFO L933 BasicCegarLoop]: 89 mSDtfsCounter, 122 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 24 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 05:57:02,555 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 234 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 100 Invalid, 0 Unknown, 24 Unchecked, 0.3s Time] [2021-11-20 05:57:02,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-11-20 05:57:02,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 129. [2021-11-20 05:57:02,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 99 states have (on average 1.3333333333333333) internal successors, (132), 118 states have internal predecessors, (132), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-20 05:57:02,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 142 transitions. [2021-11-20 05:57:02,561 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 142 transitions. Word has length 47 [2021-11-20 05:57:02,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:57:02,562 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 142 transitions. [2021-11-20 05:57:02,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 9.25) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 05:57:02,562 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 142 transitions. [2021-11-20 05:57:02,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-20 05:57:02,563 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:57:02,563 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:57:02,591 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (33)] Ended with exit code 0 [2021-11-20 05:57:02,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:57:02,778 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr26REQUIRES_VIOLATION === [ldv_hid_set_drvdataErr0REQUIRES_VIOLATION, ldv_hid_set_drvdataErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION (and 47 more)] === [2021-11-20 05:57:02,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:57:02,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1842074257, now seen corresponding path program 1 times [2021-11-20 05:57:02,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:57:02,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [546388654] [2021-11-20 05:57:02,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:57:02,780 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:57:02,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:57:02,781 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:57:02,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-11-20 05:57:02,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:57:02,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-20 05:57:02,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:57:03,402 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-20 05:57:03,402 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:57:03,809 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-11-20 05:57:04,178 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-20 05:57:04,178 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:57:04,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [546388654] [2021-11-20 05:57:04,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [546388654] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:57:04,179 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 05:57:04,179 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 12 [2021-11-20 05:57:04,179 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135725512] [2021-11-20 05:57:04,179 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 05:57:04,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-20 05:57:04,180 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:57:04,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-20 05:57:04,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-11-20 05:57:04,181 INFO L87 Difference]: Start difference. First operand 129 states and 142 transitions. Second operand has 13 states, 12 states have (on average 5.416666666666667) internal successors, (65), 11 states have internal predecessors, (65), 5 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2021-11-20 05:57:05,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:57:05,266 INFO L93 Difference]: Finished difference Result 149 states and 160 transitions. [2021-11-20 05:57:05,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 05:57:05,267 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 5.416666666666667) internal successors, (65), 11 states have internal predecessors, (65), 5 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) Word has length 47 [2021-11-20 05:57:05,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:57:05,268 INFO L225 Difference]: With dead ends: 149 [2021-11-20 05:57:05,269 INFO L226 Difference]: Without dead ends: 149 [2021-11-20 05:57:05,269 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 80 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-11-20 05:57:05,270 INFO L933 BasicCegarLoop]: 96 mSDtfsCounter, 313 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 586 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 14 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:57:05,270 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [314 Valid, 586 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 197 Invalid, 0 Unknown, 14 Unchecked, 1.0s Time] [2021-11-20 05:57:05,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2021-11-20 05:57:05,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 128. [2021-11-20 05:57:05,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 99 states have (on average 1.3131313131313131) internal successors, (130), 117 states have internal predecessors, (130), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-20 05:57:05,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 140 transitions. [2021-11-20 05:57:05,275 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 140 transitions. Word has length 47 [2021-11-20 05:57:05,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:57:05,275 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 140 transitions. [2021-11-20 05:57:05,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 5.416666666666667) internal successors, (65), 11 states have internal predecessors, (65), 5 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2021-11-20 05:57:05,276 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 140 transitions. [2021-11-20 05:57:05,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-20 05:57:05,277 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:57:05,277 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:57:05,300 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2021-11-20 05:57:05,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:57:05,493 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_FREE === [ldv_hid_set_drvdataErr0REQUIRES_VIOLATION, ldv_hid_set_drvdataErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION (and 47 more)] === [2021-11-20 05:57:05,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:57:05,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1269761976, now seen corresponding path program 1 times [2021-11-20 05:57:05,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:57:05,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [270726099] [2021-11-20 05:57:05,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:57:05,495 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:57:05,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:57:05,496 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:57:05,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2021-11-20 05:57:05,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:57:05,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 05:57:05,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:57:05,786 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-20 05:57:05,787 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:57:05,871 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-20 05:57:05,872 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:57:05,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [270726099] [2021-11-20 05:57:05,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [270726099] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:57:05,872 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:57:05,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-20 05:57:05,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081093651] [2021-11-20 05:57:05,872 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:57:05,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 05:57:05,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:57:05,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 05:57:05,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:57:05,873 INFO L87 Difference]: Start difference. First operand 128 states and 140 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-20 05:57:05,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:57:05,904 INFO L93 Difference]: Finished difference Result 184 states and 201 transitions. [2021-11-20 05:57:05,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 05:57:05,904 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 48 [2021-11-20 05:57:05,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:57:05,906 INFO L225 Difference]: With dead ends: 184 [2021-11-20 05:57:05,906 INFO L226 Difference]: Without dead ends: 184 [2021-11-20 05:57:05,906 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:57:05,906 INFO L933 BasicCegarLoop]: 127 mSDtfsCounter, 45 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:57:05,907 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 358 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 05:57:05,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2021-11-20 05:57:05,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 132. [2021-11-20 05:57:05,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 103 states have (on average 1.3009708737864079) internal successors, (134), 121 states have internal predecessors, (134), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-20 05:57:05,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 144 transitions. [2021-11-20 05:57:05,912 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 144 transitions. Word has length 48 [2021-11-20 05:57:05,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:57:05,913 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 144 transitions. [2021-11-20 05:57:05,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-20 05:57:05,913 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 144 transitions. [2021-11-20 05:57:05,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-20 05:57:05,914 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:57:05,914 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:57:05,930 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2021-11-20 05:57:06,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:57:06,129 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_FREE === [ldv_hid_set_drvdataErr0REQUIRES_VIOLATION, ldv_hid_set_drvdataErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION (and 47 more)] === [2021-11-20 05:57:06,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:57:06,130 INFO L85 PathProgramCache]: Analyzing trace with hash 647676343, now seen corresponding path program 1 times [2021-11-20 05:57:06,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:57:06,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [615680160] [2021-11-20 05:57:06,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:57:06,130 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:57:06,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:57:06,132 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:57:06,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2021-11-20 05:57:06,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:57:06,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 05:57:06,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:57:06,372 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-20 05:57:06,372 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:57:06,462 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-20 05:57:06,463 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:57:06,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [615680160] [2021-11-20 05:57:06,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [615680160] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:57:06,463 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:57:06,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-20 05:57:06,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321765623] [2021-11-20 05:57:06,464 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:57:06,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 05:57:06,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:57:06,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 05:57:06,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:57:06,464 INFO L87 Difference]: Start difference. First operand 132 states and 144 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-20 05:57:06,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:57:06,500 INFO L93 Difference]: Finished difference Result 211 states and 216 transitions. [2021-11-20 05:57:06,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 05:57:06,500 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 49 [2021-11-20 05:57:06,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:57:06,501 INFO L225 Difference]: With dead ends: 211 [2021-11-20 05:57:06,502 INFO L226 Difference]: Without dead ends: 211 [2021-11-20 05:57:06,502 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:57:06,503 INFO L933 BasicCegarLoop]: 109 mSDtfsCounter, 139 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:57:06,503 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [139 Valid, 338 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 05:57:06,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2021-11-20 05:57:06,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 129. [2021-11-20 05:57:06,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 100 states have (on average 1.29) internal successors, (129), 118 states have internal predecessors, (129), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-20 05:57:06,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 139 transitions. [2021-11-20 05:57:06,509 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 139 transitions. Word has length 49 [2021-11-20 05:57:06,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:57:06,510 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 139 transitions. [2021-11-20 05:57:06,510 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-20 05:57:06,510 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 139 transitions. [2021-11-20 05:57:06,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-20 05:57:06,511 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:57:06,511 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:57:06,529 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2021-11-20 05:57:06,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:57:06,726 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr27REQUIRES_VIOLATION === [ldv_hid_set_drvdataErr0REQUIRES_VIOLATION, ldv_hid_set_drvdataErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION (and 47 more)] === [2021-11-20 05:57:06,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:57:06,726 INFO L85 PathProgramCache]: Analyzing trace with hash 706837329, now seen corresponding path program 1 times [2021-11-20 05:57:06,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:57:06,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [205451255] [2021-11-20 05:57:06,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:57:06,728 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:57:06,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:57:06,729 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:57:06,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2021-11-20 05:57:06,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:57:06,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 39 conjunts are in the unsatisfiable core [2021-11-20 05:57:06,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:57:07,143 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-11-20 05:57:07,398 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-20 05:57:19,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:57:19,726 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2021-11-20 05:57:21,876 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-11-20 05:57:25,965 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-20 05:57:25,965 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:58:00,613 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-20 05:58:00,614 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:58:00,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [205451255] [2021-11-20 05:58:00,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [205451255] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-20 05:58:00,614 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 05:58:00,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [14] total 21 [2021-11-20 05:58:00,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265748181] [2021-11-20 05:58:00,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:58:00,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 05:58:00,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:58:00,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 05:58:00,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=386, Unknown=20, NotChecked=0, Total=462 [2021-11-20 05:58:00,616 INFO L87 Difference]: Start difference. First operand 129 states and 139 transitions. Second operand has 11 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-20 05:58:17,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:58:17,905 INFO L93 Difference]: Finished difference Result 172 states and 183 transitions. [2021-11-20 05:58:17,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-20 05:58:17,906 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 49 [2021-11-20 05:58:17,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:58:17,907 INFO L225 Difference]: With dead ends: 172 [2021-11-20 05:58:17,907 INFO L226 Difference]: Without dead ends: 172 [2021-11-20 05:58:17,908 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 72 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 69.2s TimeCoverageRelationStatistics Valid=96, Invalid=696, Unknown=20, NotChecked=0, Total=812 [2021-11-20 05:58:17,908 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 119 mSDsluCounter, 574 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 657 SdHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 223 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-20 05:58:17,909 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 657 Invalid, 423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 195 Invalid, 0 Unknown, 223 Unchecked, 0.6s Time] [2021-11-20 05:58:17,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2021-11-20 05:58:17,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 136. [2021-11-20 05:58:17,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 107 states have (on average 1.280373831775701) internal successors, (137), 125 states have internal predecessors, (137), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-20 05:58:17,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 147 transitions. [2021-11-20 05:58:17,914 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 147 transitions. Word has length 49 [2021-11-20 05:58:17,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:58:17,915 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 147 transitions. [2021-11-20 05:58:17,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-20 05:58:17,915 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 147 transitions. [2021-11-20 05:58:17,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-20 05:58:17,916 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:58:17,916 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:58:17,934 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2021-11-20 05:58:18,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:58:18,117 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATION === [ldv_hid_set_drvdataErr0REQUIRES_VIOLATION, ldv_hid_set_drvdataErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION (and 47 more)] === [2021-11-20 05:58:18,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:58:18,117 INFO L85 PathProgramCache]: Analyzing trace with hash 706837330, now seen corresponding path program 1 times [2021-11-20 05:58:18,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:58:18,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1078393450] [2021-11-20 05:58:18,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:58:18,118 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:58:18,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:58:18,119 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:58:18,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2021-11-20 05:58:18,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:58:18,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 46 conjunts are in the unsatisfiable core [2021-11-20 05:58:18,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:58:18,553 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-11-20 05:58:18,562 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-20 05:58:18,847 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-11-20 05:58:33,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:58:33,904 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-11-20 05:58:33,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:58:33,920 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-20 05:58:36,127 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-11-20 05:58:36,130 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2021-11-20 05:58:40,278 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-20 05:58:40,279 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:59:01,628 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_entry_point_~hdev~0#1.base_BEFORE_CALL_38| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_40| (_ BitVec 32))) (or (exists ((|v_ldv_hid_set_drvdata_ldv_dev_set_drvdata_~data#1.base_24| (_ BitVec 32)) (|v_ldv_hid_set_drvdata_ldv_dev_set_drvdata_~data#1.offset_24| (_ BitVec 32))) (not (let ((.cse0 (bvadd (_ bv4 32) |c_ldv_hid_set_drvdata_#in~hdev#1.offset|)) (.cse1 (bvadd (_ bv8 32) |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_40|))) (bvule (select (select (store |c_old(#memory_$Pointer$.offset)| |c_ldv_hid_set_drvdata_#in~hdev#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |c_ldv_hid_set_drvdata_#in~hdev#1.base|) .cse0 |v_ldv_hid_set_drvdata_ldv_dev_set_drvdata_~data#1.offset_24|)) |v_ULTIMATE.start_entry_point_~hdev~0#1.base_BEFORE_CALL_38|) .cse1) (select |c_#length| (select (select (store |c_old(#memory_$Pointer$.base)| |c_ldv_hid_set_drvdata_#in~hdev#1.base| (store (select |c_old(#memory_$Pointer$.base)| |c_ldv_hid_set_drvdata_#in~hdev#1.base|) .cse0 |v_ldv_hid_set_drvdata_ldv_dev_set_drvdata_~data#1.base_24|)) |v_ULTIMATE.start_entry_point_~hdev~0#1.base_BEFORE_CALL_38|) .cse1)))))) (and (forall ((|ldv_hid_set_drvdata_ldv_dev_set_drvdata_~data#1.base| (_ BitVec 32)) (|ldv_hid_set_drvdata_ldv_dev_set_drvdata_~data#1.offset| (_ BitVec 32))) (let ((.cse2 (bvadd (_ bv4 32) |c_ldv_hid_set_drvdata_ldv_dev_set_drvdata_~dev#1.offset|)) (.cse3 (bvadd (_ bv8 32) |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_40|))) (bvule (select (select (store |c_#memory_$Pointer$.offset| |c_ldv_hid_set_drvdata_ldv_dev_set_drvdata_~dev#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ldv_hid_set_drvdata_ldv_dev_set_drvdata_~dev#1.base|) .cse2 |ldv_hid_set_drvdata_ldv_dev_set_drvdata_~data#1.offset|)) |v_ULTIMATE.start_entry_point_~hdev~0#1.base_BEFORE_CALL_38|) .cse3) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ldv_hid_set_drvdata_ldv_dev_set_drvdata_~dev#1.base| (store (select |c_#memory_$Pointer$.base| |c_ldv_hid_set_drvdata_ldv_dev_set_drvdata_~dev#1.base|) .cse2 |ldv_hid_set_drvdata_ldv_dev_set_drvdata_~data#1.base|)) |v_ULTIMATE.start_entry_point_~hdev~0#1.base_BEFORE_CALL_38|) .cse3))))) (forall ((|ldv_hid_set_drvdata_ldv_dev_set_drvdata_~data#1.offset| (_ BitVec 32))) (let ((.cse4 (select (select (store |c_#memory_$Pointer$.offset| |c_ldv_hid_set_drvdata_ldv_dev_set_drvdata_~dev#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ldv_hid_set_drvdata_ldv_dev_set_drvdata_~dev#1.base|) (bvadd (_ bv4 32) |c_ldv_hid_set_drvdata_ldv_dev_set_drvdata_~dev#1.offset|) |ldv_hid_set_drvdata_ldv_dev_set_drvdata_~data#1.offset|)) |v_ULTIMATE.start_entry_point_~hdev~0#1.base_BEFORE_CALL_38|) (bvadd (_ bv8 32) |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_40|)))) (bvule (bvadd .cse4 (_ bv4294967292 32)) .cse4)))) (exists ((|v_ldv_hid_set_drvdata_ldv_dev_set_drvdata_~data#1.offset_24| (_ BitVec 32))) (not (let ((.cse5 (select (select (store |c_old(#memory_$Pointer$.offset)| |c_ldv_hid_set_drvdata_#in~hdev#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |c_ldv_hid_set_drvdata_#in~hdev#1.base|) (bvadd (_ bv4 32) |c_ldv_hid_set_drvdata_#in~hdev#1.offset|) |v_ldv_hid_set_drvdata_ldv_dev_set_drvdata_~data#1.offset_24|)) |v_ULTIMATE.start_entry_point_~hdev~0#1.base_BEFORE_CALL_38|) (bvadd (_ bv8 32) |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_40|)))) (bvule (bvadd (_ bv4294967292 32) .cse5) .cse5)))))) is different from false [2021-11-20 05:59:03,991 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_entry_point_~hdev~0#1.base_BEFORE_CALL_38| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_40| (_ BitVec 32))) (or (and (forall ((|ldv_hid_set_drvdata_ldv_dev_set_drvdata_~data#1.offset| (_ BitVec 32))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ldv_hid_set_drvdata_#in~hdev#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ldv_hid_set_drvdata_#in~hdev#1.base|) (bvadd (_ bv4 32) |c_ldv_hid_set_drvdata_#in~hdev#1.offset|) |ldv_hid_set_drvdata_ldv_dev_set_drvdata_~data#1.offset|)) |v_ULTIMATE.start_entry_point_~hdev~0#1.base_BEFORE_CALL_38|) (bvadd (_ bv8 32) |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_40|)))) (bvule (bvadd (_ bv4294967292 32) .cse0) .cse0))) (forall ((|ldv_hid_set_drvdata_ldv_dev_set_drvdata_~data#1.base| (_ BitVec 32)) (|ldv_hid_set_drvdata_ldv_dev_set_drvdata_~data#1.offset| (_ BitVec 32))) (let ((.cse1 (bvadd (_ bv4 32) |c_ldv_hid_set_drvdata_#in~hdev#1.offset|)) (.cse2 (bvadd (_ bv8 32) |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_40|))) (bvule (select (select (store |c_#memory_$Pointer$.offset| |c_ldv_hid_set_drvdata_#in~hdev#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ldv_hid_set_drvdata_#in~hdev#1.base|) .cse1 |ldv_hid_set_drvdata_ldv_dev_set_drvdata_~data#1.offset|)) |v_ULTIMATE.start_entry_point_~hdev~0#1.base_BEFORE_CALL_38|) .cse2) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ldv_hid_set_drvdata_#in~hdev#1.base| (store (select |c_#memory_$Pointer$.base| |c_ldv_hid_set_drvdata_#in~hdev#1.base|) .cse1 |ldv_hid_set_drvdata_ldv_dev_set_drvdata_~data#1.base|)) |v_ULTIMATE.start_entry_point_~hdev~0#1.base_BEFORE_CALL_38|) .cse2)))))) (exists ((|v_ldv_hid_set_drvdata_ldv_dev_set_drvdata_~data#1.base_24| (_ BitVec 32)) (|v_ldv_hid_set_drvdata_ldv_dev_set_drvdata_~data#1.offset_24| (_ BitVec 32))) (not (let ((.cse3 (bvadd (_ bv4 32) |c_ldv_hid_set_drvdata_#in~hdev#1.offset|)) (.cse4 (bvadd (_ bv8 32) |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_40|))) (bvule (select (select (store |c_old(#memory_$Pointer$.offset)| |c_ldv_hid_set_drvdata_#in~hdev#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |c_ldv_hid_set_drvdata_#in~hdev#1.base|) .cse3 |v_ldv_hid_set_drvdata_ldv_dev_set_drvdata_~data#1.offset_24|)) |v_ULTIMATE.start_entry_point_~hdev~0#1.base_BEFORE_CALL_38|) .cse4) (select |c_#length| (select (select (store |c_old(#memory_$Pointer$.base)| |c_ldv_hid_set_drvdata_#in~hdev#1.base| (store (select |c_old(#memory_$Pointer$.base)| |c_ldv_hid_set_drvdata_#in~hdev#1.base|) .cse3 |v_ldv_hid_set_drvdata_ldv_dev_set_drvdata_~data#1.base_24|)) |v_ULTIMATE.start_entry_point_~hdev~0#1.base_BEFORE_CALL_38|) .cse4)))))) (exists ((|v_ldv_hid_set_drvdata_ldv_dev_set_drvdata_~data#1.offset_24| (_ BitVec 32))) (not (let ((.cse5 (select (select (store |c_old(#memory_$Pointer$.offset)| |c_ldv_hid_set_drvdata_#in~hdev#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |c_ldv_hid_set_drvdata_#in~hdev#1.base|) (bvadd (_ bv4 32) |c_ldv_hid_set_drvdata_#in~hdev#1.offset|) |v_ldv_hid_set_drvdata_ldv_dev_set_drvdata_~data#1.offset_24|)) |v_ULTIMATE.start_entry_point_~hdev~0#1.base_BEFORE_CALL_38|) (bvadd (_ bv8 32) |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_40|)))) (bvule (bvadd (_ bv4294967292 32) .cse5) .cse5)))))) is different from false [2021-11-20 05:59:08,644 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-11-20 05:59:13,205 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-20 05:59:13,205 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:59:13,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1078393450] [2021-11-20 05:59:13,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1078393450] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:59:13,206 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 05:59:13,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 27 [2021-11-20 05:59:13,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715026531] [2021-11-20 05:59:13,206 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 05:59:13,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-20 05:59:13,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:59:13,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-20 05:59:13,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=563, Unknown=18, NotChecked=98, Total=756 [2021-11-20 05:59:13,208 INFO L87 Difference]: Start difference. First operand 136 states and 147 transitions. Second operand has 28 states, 27 states have (on average 2.5555555555555554) internal successors, (69), 23 states have internal predecessors, (69), 6 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (8), 8 states have call predecessors, (8), 6 states have call successors, (8) [2021-11-20 05:59:37,087 WARN L227 SmtUtils]: Spent 7.01s on a formula simplification. DAG size of input: 67 DAG size of output: 19 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-20 05:59:52,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:59:52,153 INFO L93 Difference]: Finished difference Result 197 states and 206 transitions. [2021-11-20 05:59:52,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-20 05:59:52,154 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 2.5555555555555554) internal successors, (69), 23 states have internal predecessors, (69), 6 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (8), 8 states have call predecessors, (8), 6 states have call successors, (8) Word has length 49 [2021-11-20 05:59:52,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:59:52,156 INFO L225 Difference]: With dead ends: 197 [2021-11-20 05:59:52,156 INFO L226 Difference]: Without dead ends: 197 [2021-11-20 05:59:52,157 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 69 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 2 IntricatePredicates, 2 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 88.3s TimeCoverageRelationStatistics Valid=177, Invalid=1071, Unknown=20, NotChecked=138, Total=1406 [2021-11-20 05:59:52,157 INFO L933 BasicCegarLoop]: 102 mSDtfsCounter, 325 mSDsluCounter, 1479 mSDsCounter, 0 mSdLazyCounter, 746 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 1581 SdHoareTripleChecker+Invalid, 1297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 540 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-11-20 05:59:52,158 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [327 Valid, 1581 Invalid, 1297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 746 Invalid, 0 Unknown, 540 Unchecked, 2.8s Time] [2021-11-20 05:59:52,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2021-11-20 05:59:52,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 136. [2021-11-20 05:59:52,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 107 states have (on average 1.2710280373831775) internal successors, (136), 125 states have internal predecessors, (136), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-20 05:59:52,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 146 transitions. [2021-11-20 05:59:52,162 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 146 transitions. Word has length 49 [2021-11-20 05:59:52,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:59:52,163 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 146 transitions. [2021-11-20 05:59:52,163 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 2.5555555555555554) internal successors, (69), 23 states have internal predecessors, (69), 6 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (8), 8 states have call predecessors, (8), 6 states have call successors, (8) [2021-11-20 05:59:52,164 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 146 transitions. [2021-11-20 05:59:52,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-20 05:59:52,164 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:59:52,165 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:59:52,175 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2021-11-20 05:59:52,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:59:52,367 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr29REQUIRES_VIOLATION === [ldv_hid_set_drvdataErr0REQUIRES_VIOLATION, ldv_hid_set_drvdataErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION (and 47 more)] === [2021-11-20 05:59:52,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:59:52,368 INFO L85 PathProgramCache]: Analyzing trace with hash 437120825, now seen corresponding path program 1 times [2021-11-20 05:59:52,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:59:52,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [212835203] [2021-11-20 05:59:52,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:59:52,369 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:59:52,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:59:52,370 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:59:52,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2021-11-20 05:59:52,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:59:52,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 70 conjunts are in the unsatisfiable core [2021-11-20 05:59:52,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:59:52,607 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 05:59:52,824 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-20 05:59:52,824 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 34 [2021-11-20 05:59:53,169 INFO L354 Elim1Store]: treesize reduction 30, result has 45.5 percent of original size [2021-11-20 05:59:53,170 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 53 [2021-11-20 05:59:53,324 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 27 [2021-11-20 05:59:53,862 INFO L354 Elim1Store]: treesize reduction 41, result has 18.0 percent of original size [2021-11-20 05:59:53,862 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 49 [2021-11-20 05:59:54,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:59:54,045 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 60 [2021-11-20 05:59:54,082 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-20 05:59:55,041 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 05:59:55,041 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 109 treesize of output 76 [2021-11-20 05:59:55,053 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 69 [2021-11-20 06:00:16,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:00:16,535 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 06:00:16,557 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-20 06:00:16,558 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 105 treesize of output 72 [2021-11-20 06:00:16,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:00:16,598 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-20 06:00:19,179 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 118 treesize of output 110 [2021-11-20 06:00:23,714 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 06:00:23,715 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 108 treesize of output 67 [2021-11-20 06:00:26,011 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 06:00:26,011 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:00:52,857 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 69 [2021-11-20 06:01:38,775 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_4 (_ BitVec 32)) (|v_ldv_hid_set_drvdata_ldv_dev_set_drvdata_~data#1.base_28| (_ BitVec 32)) (|ULTIMATE.start_entry_point_#t~mem57#1.offset| (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse4 (bvadd (_ bv4 32) |c_ULTIMATE.start_entry_point_~intf~2#1.offset|))) (select (let ((.cse0 (let ((.cse3 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~intf~2#1.base|) .cse4))) (store |c_#memory_$Pointer$.base| .cse3 (store (select |c_#memory_$Pointer$.base| .cse3) (bvadd (_ bv7 32) |ULTIMATE.start_entry_point_#t~mem57#1.offset|) v_DerPreprocessor_4)))) (.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_entry_point_~hdev~0#1.offset|))) (let ((.cse1 (store (store (select .cse0 |c_ULTIMATE.start_entry_point_~hdev~0#1.base|) .cse2 |c_ULTIMATE.start_entry_point_~intf~2#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_entry_point_~hdev~0#1.offset|) |v_ldv_hid_set_drvdata_ldv_dev_set_drvdata_~data#1.base_28|))) (select (store .cse0 |c_ULTIMATE.start_entry_point_~hdev~0#1.base| .cse1) (select .cse1 .cse2)))) .cse4))))))))))))))))) (_ bv1 1)))) is different from false [2021-11-20 06:01:55,036 WARN L227 SmtUtils]: Spent 16.19s on a formula simplification. DAG size of input: 46 DAG size of output: 32 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-20 06:01:55,037 INFO L354 Elim1Store]: treesize reduction 80, result has 39.4 percent of original size [2021-11-20 06:01:55,038 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 71690 treesize of output 39437 [2021-11-20 06:01:55,442 INFO L354 Elim1Store]: treesize reduction 20, result has 59.2 percent of original size [2021-11-20 06:01:55,443 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 39829 treesize of output 37679 [2021-11-20 06:01:55,803 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:01:55,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [212835203] [2021-11-20 06:01:55,804 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-20 06:01:55,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1403451539] [2021-11-20 06:01:55,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:01:55,804 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-20 06:01:55,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/cvc4 [2021-11-20 06:01:55,808 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-20 06:01:55,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/cvc4 --incremental --print-success --lang smt (40)] Waiting until timeout for monitored process [2021-11-20 06:01:56,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:01:56,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 69 conjunts are in the unsatisfiable core [2021-11-20 06:01:56,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:01:56,331 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 06:01:56,463 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-20 06:01:56,464 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 36 [2021-11-20 06:01:56,672 INFO L354 Elim1Store]: treesize reduction 30, result has 45.5 percent of original size [2021-11-20 06:01:56,673 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 40 treesize of output 57 [2021-11-20 06:01:56,809 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 27 [2021-11-20 06:01:57,148 INFO L354 Elim1Store]: treesize reduction 41, result has 18.0 percent of original size [2021-11-20 06:01:57,148 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 75 treesize of output 47 [2021-11-20 06:01:57,265 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-20 06:01:57,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:01:57,281 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 59 [2021-11-20 06:02:00,254 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 06:02:00,254 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 68 [2021-11-20 06:02:00,261 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 61 [2021-11-20 06:02:01,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:02:01,035 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-20 06:02:01,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:02:01,160 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 06:02:01,183 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-20 06:02:01,184 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 108 treesize of output 75 [2021-11-20 06:02:01,674 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 118 treesize of output 110 [2021-11-20 06:02:01,914 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 06:02:01,914 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 108 treesize of output 67 [2021-11-20 06:02:04,147 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 06:02:04,147 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:02:15,516 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 69 [2021-11-20 06:02:17,593 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_5 (_ BitVec 32)) (|v_ldv_hid_set_drvdata_ldv_dev_set_drvdata_~data#1.base_28| (_ BitVec 32)) (|ULTIMATE.start_entry_point_#t~mem57#1.offset| (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_#t~mem57#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_#t~mem57#1.base|) (bvadd (_ bv7 32) |ULTIMATE.start_entry_point_#t~mem57#1.offset|) v_DerPreprocessor_5))) (.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_entry_point_~hdev~0#1.offset|))) (let ((.cse1 (store (store (select .cse0 |c_ULTIMATE.start_entry_point_~hdev~0#1.base|) .cse2 |c_ULTIMATE.start_entry_point_~intf~2#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_entry_point_~hdev~0#1.offset|) |v_ldv_hid_set_drvdata_ldv_dev_set_drvdata_~data#1.base_28|))) (select (store .cse0 |c_ULTIMATE.start_entry_point_~hdev~0#1.base| .cse1) (select .cse1 .cse2)))) (bvadd (_ bv4 32) |c_ULTIMATE.start_entry_point_~intf~2#1.offset|))))))))))))))) (_ bv1 1)))) is different from false [2021-11-20 06:02:19,639 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_5 (_ BitVec 32)) (|v_ldv_hid_set_drvdata_ldv_dev_set_drvdata_~data#1.base_28| (_ BitVec 32)) (|ULTIMATE.start_entry_point_#t~mem57#1.offset| (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse4 (bvadd (_ bv4 32) |c_ULTIMATE.start_entry_point_~intf~2#1.offset|))) (select (let ((.cse0 (let ((.cse3 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~intf~2#1.base|) .cse4))) (store |c_#memory_$Pointer$.base| .cse3 (store (select |c_#memory_$Pointer$.base| .cse3) (bvadd (_ bv7 32) |ULTIMATE.start_entry_point_#t~mem57#1.offset|) v_DerPreprocessor_5)))) (.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_entry_point_~hdev~0#1.offset|))) (let ((.cse1 (store (store (select .cse0 |c_ULTIMATE.start_entry_point_~hdev~0#1.base|) .cse2 |c_ULTIMATE.start_entry_point_~intf~2#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_entry_point_~hdev~0#1.offset|) |v_ldv_hid_set_drvdata_ldv_dev_set_drvdata_~data#1.base_28|))) (select (store .cse0 |c_ULTIMATE.start_entry_point_~hdev~0#1.base| .cse1) (select .cse1 .cse2)))) .cse4))))))))))))))) (_ bv1 1)))) is different from false [2021-11-20 06:02:35,974 WARN L227 SmtUtils]: Spent 16.27s on a formula simplification. DAG size of input: 46 DAG size of output: 28 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-20 06:02:35,975 INFO L354 Elim1Store]: treesize reduction 80, result has 39.4 percent of original size [2021-11-20 06:02:35,975 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 17322 treesize of output 9357 [2021-11-20 06:02:36,087 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 06:02:36,088 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 9493 treesize of output 8953 [2021-11-20 06:02:36,153 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-20 06:02:36,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [321231070] [2021-11-20 06:02:36,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:02:36,154 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:02:36,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:02:36,173 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:02:36,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2021-11-20 06:02:36,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:02:36,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 62 conjunts are in the unsatisfiable core [2021-11-20 06:02:36,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:02:36,287 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 06:02:36,600 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 06:02:36,601 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 21 [2021-11-20 06:02:39,252 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-20 06:02:39,265 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-20 06:02:41,655 INFO L354 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2021-11-20 06:02:41,655 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 24 [2021-11-20 06:04:02,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:04:02,263 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 67 [2021-11-20 06:04:02,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:04:02,295 INFO L354 Elim1Store]: treesize reduction 75, result has 16.7 percent of original size [2021-11-20 06:04:02,296 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 61 treesize of output 60 [2021-11-20 06:04:03,122 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 42 [2021-11-20 06:04:03,723 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 06:04:03,723 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 22 [2021-11-20 06:04:03,834 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 06:04:03,834 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:04:13,596 INFO L354 Elim1Store]: treesize reduction 5, result has 91.1 percent of original size [2021-11-20 06:04:13,597 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 72 treesize of output 71 [2021-11-20 06:04:18,412 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-11-20 06:04:18,413 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 1592 treesize of output 1474 [2021-11-20 06:04:18,465 INFO L354 Elim1Store]: treesize reduction 26, result has 13.3 percent of original size [2021-11-20 06:04:18,466 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1494 treesize of output 1378 [2021-11-20 06:04:18,512 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 752 treesize of output 704 [2021-11-20 06:04:25,489 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 06:04:25,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [321231070] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:04:25,490 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 06:04:25,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 41 [2021-11-20 06:04:25,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849851301] [2021-11-20 06:04:25,490 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 06:04:25,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2021-11-20 06:04:25,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:04:25,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-11-20 06:04:25,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=3569, Unknown=77, NotChecked=372, Total=4290 [2021-11-20 06:04:25,494 INFO L87 Difference]: Start difference. First operand 136 states and 146 transitions. Second operand has 42 states, 41 states have (on average 1.829268292682927) internal successors, (75), 36 states have internal predecessors, (75), 7 states have call successors, (7), 5 states have call predecessors, (7), 6 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2021-11-20 06:04:46,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:04:46,482 INFO L93 Difference]: Finished difference Result 198 states and 204 transitions. [2021-11-20 06:04:46,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-20 06:04:46,483 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 1.829268292682927) internal successors, (75), 36 states have internal predecessors, (75), 7 states have call successors, (7), 5 states have call predecessors, (7), 6 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) Word has length 50 [2021-11-20 06:04:46,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:04:46,484 INFO L225 Difference]: With dead ends: 198 [2021-11-20 06:04:46,484 INFO L226 Difference]: Without dead ends: 198 [2021-11-20 06:04:46,486 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 172 SyntacticMatches, 16 SemanticMatches, 79 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 2100 ImplicationChecksByTransitivity, 243.1s TimeCoverageRelationStatistics Valid=453, Invalid=5481, Unknown=84, NotChecked=462, Total=6480 [2021-11-20 06:04:46,487 INFO L933 BasicCegarLoop]: 135 mSDtfsCounter, 169 mSDsluCounter, 2926 mSDsCounter, 0 mSdLazyCounter, 1175 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 3061 SdHoareTripleChecker+Invalid, 1899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 705 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:04:46,487 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [169 Valid, 3061 Invalid, 1899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1175 Invalid, 0 Unknown, 705 Unchecked, 3.1s Time] [2021-11-20 06:04:46,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-11-20 06:04:46,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 137. [2021-11-20 06:04:46,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 108 states have (on average 1.2777777777777777) internal successors, (138), 126 states have internal predecessors, (138), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-20 06:04:46,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 148 transitions. [2021-11-20 06:04:46,492 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 148 transitions. Word has length 50 [2021-11-20 06:04:46,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:04:46,493 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 148 transitions. [2021-11-20 06:04:46,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 1.829268292682927) internal successors, (75), 36 states have internal predecessors, (75), 7 states have call successors, (7), 5 states have call predecessors, (7), 6 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2021-11-20 06:04:46,493 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 148 transitions. [2021-11-20 06:04:46,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-20 06:04:46,494 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:04:46,494 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:04:46,537 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2021-11-20 06:04:46,732 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2021-11-20 06:04:46,925 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/cvc4 --incremental --print-success --lang smt (40)] Forceful destruction successful, exit code 0 [2021-11-20 06:04:47,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/cvc4 --incremental --print-success --lang smt [2021-11-20 06:04:47,123 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATION === [ldv_hid_set_drvdataErr0REQUIRES_VIOLATION, ldv_hid_set_drvdataErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION (and 47 more)] === [2021-11-20 06:04:47,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:04:47,123 INFO L85 PathProgramCache]: Analyzing trace with hash 437120826, now seen corresponding path program 1 times [2021-11-20 06:04:47,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:04:47,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1445828300] [2021-11-20 06:04:47,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:04:47,124 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:04:47,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:04:47,125 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:04:47,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d86f25b5-31d5-4784-8304-afa60dbdb9d5/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2021-11-20 06:04:47,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:04:47,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 77 conjunts are in the unsatisfiable core [2021-11-20 06:04:47,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:04:47,378 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 06:04:47,601 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-20 06:04:47,602 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 34 [2021-11-20 06:04:47,860 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 06:04:47,988 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-11-20 06:04:47,989 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 40 [2021-11-20 06:04:48,112 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-20 06:04:48,126 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2021-11-20 06:04:48,591 INFO L354 Elim1Store]: treesize reduction 41, result has 18.0 percent of original size [2021-11-20 06:04:48,591 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 115 treesize of output 69 [2021-11-20 06:04:48,621 INFO L354 Elim1Store]: treesize reduction 59, result has 13.2 percent of original size [2021-11-20 06:04:48,621 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 44 [2021-11-20 06:04:48,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:04:48,707 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 54 [2021-11-20 06:04:48,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:04:48,713 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 85 [2021-11-20 06:04:49,615 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 06:04:49,615 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 35 [2021-11-20 06:04:49,622 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 06:04:49,623 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 24