./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 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/ldv-memsafety/memleaks_test15-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 0.2.2-?-6c24879 [2022-07-12 18:52:50,834 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 18:52:50,835 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 18:52:50,867 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 18:52:50,868 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 18:52:50,869 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 18:52:50,870 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 18:52:50,871 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 18:52:50,873 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 18:52:50,879 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 18:52:50,880 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 18:52:50,881 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 18:52:50,882 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 18:52:50,883 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 18:52:50,884 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 18:52:50,886 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 18:52:50,886 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 18:52:50,887 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 18:52:50,888 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 18:52:50,892 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 18:52:50,893 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 18:52:50,894 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 18:52:50,894 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 18:52:50,895 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 18:52:50,896 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 18:52:50,900 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 18:52:50,901 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 18:52:50,901 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 18:52:50,902 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 18:52:50,902 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 18:52:50,903 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 18:52:50,903 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 18:52:50,904 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 18:52:50,905 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 18:52:50,905 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 18:52:50,905 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 18:52:50,906 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 18:52:50,906 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 18:52:50,906 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 18:52:50,906 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 18:52:50,907 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 18:52:50,908 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 18:52:50,909 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-07-12 18:52:50,931 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 18:52:50,931 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 18:52:50,931 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 18:52:50,932 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 18:52:50,932 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 18:52:50,932 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 18:52:50,933 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 18:52:50,933 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 18:52:50,933 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 18:52:50,934 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 18:52:50,934 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 18:52:50,934 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-12 18:52:50,934 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 18:52:50,934 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 18:52:50,934 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 18:52:50,934 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-07-12 18:52:50,935 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-07-12 18:52:50,935 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-07-12 18:52:50,935 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 18:52:50,935 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-12 18:52:50,935 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 18:52:50,935 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 18:52:50,935 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 18:52:50,936 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 18:52:50,936 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 18:52:50,936 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 18:52:50,936 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 18:52:50,936 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 18:52:50,936 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 18:52:50,936 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 18:52:50,937 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d2e5061cdab54d9faeb4b87debefa6d4cd511c313e4ad95bcaf137fbc78127a3 [2022-07-12 18:52:51,106 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 18:52:51,122 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 18:52:51,125 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 18:52:51,126 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 18:52:51,126 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 18:52:51,127 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test15-2.i [2022-07-12 18:52:51,199 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1691fac4f/506412223d6345eca44877bb04d72378/FLAGeab0e826c [2022-07-12 18:52:51,583 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 18:52:51,583 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test15-2.i [2022-07-12 18:52:51,605 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1691fac4f/506412223d6345eca44877bb04d72378/FLAGeab0e826c [2022-07-12 18:52:51,621 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1691fac4f/506412223d6345eca44877bb04d72378 [2022-07-12 18:52:51,623 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 18:52:51,624 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 18:52:51,625 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 18:52:51,625 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 18:52:51,627 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 18:52:51,627 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 06:52:51" (1/1) ... [2022-07-12 18:52:51,628 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d7283fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:52:51, skipping insertion in model container [2022-07-12 18:52:51,628 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 06:52:51" (1/1) ... [2022-07-12 18:52:51,632 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 18:52:51,664 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 18:52:51,956 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 18:52:51,969 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2022-07-12 18:52:51,970 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@73a5b5ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:52:51, skipping insertion in model container [2022-07-12 18:52:51,970 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 18:52:51,971 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-07-12 18:52:51,973 INFO L158 Benchmark]: Toolchain (without parser) took 347.53ms. Allocated memory was 83.9MB in the beginning and 113.2MB in the end (delta: 29.4MB). Free memory was 49.2MB in the beginning and 83.2MB in the end (delta: -34.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-12 18:52:51,973 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 83.9MB. Free memory is still 41.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 18:52:51,974 INFO L158 Benchmark]: CACSL2BoogieTranslator took 346.00ms. Allocated memory was 83.9MB in the beginning and 113.2MB in the end (delta: 29.4MB). Free memory was 48.9MB in the beginning and 83.2MB in the end (delta: -34.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-12 18:52:51,976 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 83.9MB. Free memory is still 41.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 346.00ms. Allocated memory was 83.9MB in the beginning and 113.2MB in the end (delta: 29.4MB). Free memory was 48.9MB in the beginning and 83.2MB in the end (delta: -34.3MB). 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 of different sizes 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=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/ldv-memsafety/memleaks_test15-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 0.2.2-?-6c24879 [2022-07-12 18:52:53,424 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 18:52:53,427 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 18:52:53,456 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 18:52:53,456 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 18:52:53,457 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 18:52:53,458 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 18:52:53,464 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 18:52:53,466 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 18:52:53,470 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 18:52:53,472 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 18:52:53,476 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 18:52:53,476 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 18:52:53,478 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 18:52:53,480 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 18:52:53,482 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 18:52:53,483 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 18:52:53,484 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 18:52:53,485 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 18:52:53,488 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 18:52:53,491 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 18:52:53,492 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 18:52:53,493 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 18:52:53,494 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 18:52:53,494 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 18:52:53,497 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 18:52:53,498 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 18:52:53,498 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 18:52:53,499 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 18:52:53,499 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 18:52:53,500 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 18:52:53,500 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 18:52:53,501 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 18:52:53,502 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 18:52:53,502 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 18:52:53,503 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 18:52:53,504 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 18:52:53,504 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 18:52:53,504 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 18:52:53,504 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 18:52:53,505 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 18:52:53,506 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 18:52:53,506 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-07-12 18:52:53,522 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 18:52:53,522 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 18:52:53,522 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 18:52:53,523 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 18:52:53,523 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 18:52:53,523 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 18:52:53,524 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 18:52:53,524 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 18:52:53,524 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 18:52:53,524 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 18:52:53,524 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 18:52:53,524 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-12 18:52:53,525 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 18:52:53,525 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 18:52:53,525 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 18:52:53,525 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-07-12 18:52:53,525 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-07-12 18:52:53,525 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-07-12 18:52:53,525 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 18:52:53,526 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-12 18:52:53,526 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-12 18:52:53,526 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-12 18:52:53,526 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 18:52:53,526 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 18:52:53,526 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 18:52:53,526 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 18:52:53,527 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 18:52:53,527 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 18:52:53,527 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 18:52:53,527 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 18:52:53,527 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-12 18:52:53,527 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-12 18:52:53,527 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-12 18:52:53,528 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d2e5061cdab54d9faeb4b87debefa6d4cd511c313e4ad95bcaf137fbc78127a3 [2022-07-12 18:52:53,774 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 18:52:53,791 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 18:52:53,794 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 18:52:53,795 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 18:52:53,795 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 18:52:53,797 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test15-2.i [2022-07-12 18:52:53,840 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e87c4bbd/d60f635127dc4b97944f91a732a1cfd0/FLAG7daf4ce97 [2022-07-12 18:52:54,254 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 18:52:54,255 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test15-2.i [2022-07-12 18:52:54,266 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e87c4bbd/d60f635127dc4b97944f91a732a1cfd0/FLAG7daf4ce97 [2022-07-12 18:52:54,277 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e87c4bbd/d60f635127dc4b97944f91a732a1cfd0 [2022-07-12 18:52:54,279 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 18:52:54,280 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 18:52:54,282 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 18:52:54,282 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 18:52:54,284 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 18:52:54,285 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 06:52:54" (1/1) ... [2022-07-12 18:52:54,286 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53a797e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:52:54, skipping insertion in model container [2022-07-12 18:52:54,286 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 06:52:54" (1/1) ... [2022-07-12 18:52:54,290 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 18:52:54,328 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 18:52:54,571 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 18:52:54,590 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-07-12 18:52:54,599 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 18:52:54,640 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 18:52:54,645 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 18:52:54,687 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 18:52:54,739 INFO L208 MainTranslator]: Completed translation [2022-07-12 18:52:54,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:52:54 WrapperNode [2022-07-12 18:52:54,740 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 18:52:54,741 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 18:52:54,741 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 18:52:54,741 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 18:52:54,746 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:52:54" (1/1) ... [2022-07-12 18:52:54,771 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:52:54" (1/1) ... [2022-07-12 18:52:54,789 INFO L137 Inliner]: procedures = 176, calls = 104, calls flagged for inlining = 31, calls inlined = 14, statements flattened = 171 [2022-07-12 18:52:54,791 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 18:52:54,791 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 18:52:54,792 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 18:52:54,792 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 18:52:54,797 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:52:54" (1/1) ... [2022-07-12 18:52:54,798 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:52:54" (1/1) ... [2022-07-12 18:52:54,803 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:52:54" (1/1) ... [2022-07-12 18:52:54,804 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:52:54" (1/1) ... [2022-07-12 18:52:54,812 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:52:54" (1/1) ... [2022-07-12 18:52:54,814 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:52:54" (1/1) ... [2022-07-12 18:52:54,815 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:52:54" (1/1) ... [2022-07-12 18:52:54,818 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 18:52:54,818 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 18:52:54,818 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 18:52:54,818 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 18:52:54,819 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:52:54" (1/1) ... [2022-07-12 18:52:54,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 18:52:54,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 18:52:54,846 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 18:52:54,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 18:52:54,871 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-07-12 18:52:54,871 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-12 18:52:54,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-12 18:52:54,871 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-12 18:52:54,871 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 18:52:54,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-12 18:52:54,872 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_hid_set_drvdata [2022-07-12 18:52:54,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_hid_set_drvdata [2022-07-12 18:52:54,872 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-12 18:52:54,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-07-12 18:52:54,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-07-12 18:52:54,872 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 18:52:54,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-12 18:52:54,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 18:52:54,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 18:52:55,003 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 18:52:55,005 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 18:52:55,404 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 18:52:55,411 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 18:52:55,412 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-12 18:52:55,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 06:52:55 BoogieIcfgContainer [2022-07-12 18:52:55,413 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 18:52:55,415 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 18:52:55,415 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 18:52:55,417 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 18:52:55,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 06:52:54" (1/3) ... [2022-07-12 18:52:55,418 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d1b2dcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 06:52:55, skipping insertion in model container [2022-07-12 18:52:55,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:52:54" (2/3) ... [2022-07-12 18:52:55,418 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d1b2dcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 06:52:55, skipping insertion in model container [2022-07-12 18:52:55,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 06:52:55" (3/3) ... [2022-07-12 18:52:55,421 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test15-2.i [2022-07-12 18:52:55,430 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 18:52:55,430 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 50 error locations. [2022-07-12 18:52:55,470 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 18:52:55,474 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@70f8c6c1, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3219599c [2022-07-12 18:52:55,474 INFO L358 AbstractCegarLoop]: Starting to check reachability of 50 error locations. [2022-07-12 18:52:55,477 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) [2022-07-12 18:52:55,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-12 18:52:55,482 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 18:52:55,482 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 18:52:55,483 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr47ASSERT_VIOLATIONMEMORY_LEAK === [ldv_hid_set_drvdataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_hid_set_drvdataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-07-12 18:52:55,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 18:52:55,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1983254393, now seen corresponding path program 1 times [2022-07-12 18:52:55,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 18:52:55,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2090298512] [2022-07-12 18:52:55,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 18:52:55,494 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 18:52:55,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 18:52:55,496 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 18:52:55,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-12 18:52:55,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 18:52:55,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-12 18:52:55,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 18:52:55,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 18:52:55,627 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 18:52:55,627 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 18:52:55,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2090298512] [2022-07-12 18:52:55,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2090298512] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 18:52:55,629 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 18:52:55,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 18:52:55,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767831008] [2022-07-12 18:52:55,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 18:52:55,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 18:52:55,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 18:52:55,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 18:52:55,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 18:52:55,660 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) [2022-07-12 18:52:55,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 18:52:55,814 INFO L93 Difference]: Finished difference Result 257 states and 287 transitions. [2022-07-12 18:52:55,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 18:52:55,816 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 [2022-07-12 18:52:55,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 18:52:55,828 INFO L225 Difference]: With dead ends: 257 [2022-07-12 18:52:55,828 INFO L226 Difference]: Without dead ends: 253 [2022-07-12 18:52:55,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 18:52:55,836 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 124 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 568 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 18:52:55,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 568 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 18:52:55,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2022-07-12 18:52:55,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 137. [2022-07-12 18:52:55,883 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) [2022-07-12 18:52:55,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 152 transitions. [2022-07-12 18:52:55,887 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 152 transitions. Word has length 11 [2022-07-12 18:52:55,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 18:52:55,888 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 152 transitions. [2022-07-12 18:52:55,888 INFO L496 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) [2022-07-12 18:52:55,888 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 152 transitions. [2022-07-12 18:52:55,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-12 18:52:55,890 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 18:52:55,890 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 18:52:55,896 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-07-12 18:52:56,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 18:52:56,097 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr47ASSERT_VIOLATIONMEMORY_LEAK === [ldv_hid_set_drvdataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_hid_set_drvdataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-07-12 18:52:56,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 18:52:56,097 INFO L85 PathProgramCache]: Analyzing trace with hash -1095750712, now seen corresponding path program 1 times [2022-07-12 18:52:56,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 18:52:56,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [395695847] [2022-07-12 18:52:56,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 18:52:56,098 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 18:52:56,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 18:52:56,100 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 18:52:56,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-12 18:52:56,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 18:52:56,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-12 18:52:56,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 18:52:56,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 18:52:56,175 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 18:52:56,175 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 18:52:56,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [395695847] [2022-07-12 18:52:56,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [395695847] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 18:52:56,175 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 18:52:56,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 18:52:56,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557991706] [2022-07-12 18:52:56,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 18:52:56,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 18:52:56,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 18:52:56,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 18:52:56,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 18:52:56,177 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) [2022-07-12 18:52:56,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 18:52:56,447 INFO L93 Difference]: Finished difference Result 226 states and 251 transitions. [2022-07-12 18:52:56,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 18:52:56,448 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 [2022-07-12 18:52:56,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 18:52:56,449 INFO L225 Difference]: With dead ends: 226 [2022-07-12 18:52:56,449 INFO L226 Difference]: Without dead ends: 224 [2022-07-12 18:52:56,449 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 18:52:56,450 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 92 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 18:52:56,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 440 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 18:52:56,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2022-07-12 18:52:56,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 133. [2022-07-12 18:52:56,455 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) [2022-07-12 18:52:56,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 145 transitions. [2022-07-12 18:52:56,456 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 145 transitions. Word has length 11 [2022-07-12 18:52:56,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 18:52:56,456 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 145 transitions. [2022-07-12 18:52:56,456 INFO L496 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) [2022-07-12 18:52:56,456 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 145 transitions. [2022-07-12 18:52:56,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-07-12 18:52:56,457 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 18:52:56,457 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 18:52:56,476 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-12 18:52:56,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 18:52:56,658 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_FREE === [ldv_hid_set_drvdataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_hid_set_drvdataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-07-12 18:52:56,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 18:52:56,658 INFO L85 PathProgramCache]: Analyzing trace with hash 1690514833, now seen corresponding path program 1 times [2022-07-12 18:52:56,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 18:52:56,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [730711623] [2022-07-12 18:52:56,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 18:52:56,659 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 18:52:56,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 18:52:56,660 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 18:52:56,664 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-12 18:52:56,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 18:52:56,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-12 18:52:56,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 18:52:56,725 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 18:52:56,725 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 18:52:56,725 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 18:52:56,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [730711623] [2022-07-12 18:52:56,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [730711623] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 18:52:56,726 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 18:52:56,726 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 18:52:56,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895055107] [2022-07-12 18:52:56,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 18:52:56,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 18:52:56,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 18:52:56,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 18:52:56,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 18:52:56,727 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) [2022-07-12 18:52:56,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 18:52:56,804 INFO L93 Difference]: Finished difference Result 250 states and 276 transitions. [2022-07-12 18:52:56,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 18:52:56,805 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 [2022-07-12 18:52:56,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 18:52:56,806 INFO L225 Difference]: With dead ends: 250 [2022-07-12 18:52:56,806 INFO L226 Difference]: Without dead ends: 250 [2022-07-12 18:52:56,806 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 18:52:56,807 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 119 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 531 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 18:52:56,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 531 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 18:52:56,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2022-07-12 18:52:56,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 137. [2022-07-12 18:52:56,812 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) [2022-07-12 18:52:56,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 151 transitions. [2022-07-12 18:52:56,812 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 151 transitions. Word has length 17 [2022-07-12 18:52:56,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 18:52:56,813 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 151 transitions. [2022-07-12 18:52:56,813 INFO L496 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) [2022-07-12 18:52:56,813 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 151 transitions. [2022-07-12 18:52:56,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-07-12 18:52:56,813 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 18:52:56,814 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 18:52:56,822 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-07-12 18:52:57,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 18:52:57,020 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_FREE === [ldv_hid_set_drvdataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_hid_set_drvdataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-07-12 18:52:57,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 18:52:57,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1719143984, now seen corresponding path program 1 times [2022-07-12 18:52:57,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 18:52:57,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [655891245] [2022-07-12 18:52:57,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 18:52:57,021 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 18:52:57,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 18:52:57,022 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 18:52:57,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-12 18:52:57,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 18:52:57,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-12 18:52:57,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 18:52:57,085 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 18:52:57,085 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 18:52:57,107 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 18:52:57,108 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 18:52:57,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [655891245] [2022-07-12 18:52:57,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [655891245] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 18:52:57,108 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 18:52:57,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2022-07-12 18:52:57,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508504200] [2022-07-12 18:52:57,109 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 18:52:57,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 18:52:57,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 18:52:57,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 18:52:57,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 18:52:57,110 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) [2022-07-12 18:52:57,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 18:52:57,134 INFO L93 Difference]: Finished difference Result 136 states and 150 transitions. [2022-07-12 18:52:57,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 18:52:57,135 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 [2022-07-12 18:52:57,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 18:52:57,136 INFO L225 Difference]: With dead ends: 136 [2022-07-12 18:52:57,136 INFO L226 Difference]: Without dead ends: 136 [2022-07-12 18:52:57,136 INFO L412 NwaCegarLoop]: 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 [2022-07-12 18:52:57,137 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 118 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 18:52:57,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 420 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 18:52:57,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2022-07-12 18:52:57,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2022-07-12 18:52:57,152 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) [2022-07-12 18:52:57,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 150 transitions. [2022-07-12 18:52:57,153 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 150 transitions. Word has length 17 [2022-07-12 18:52:57,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 18:52:57,153 INFO L495 AbstractCegarLoop]: Abstraction has 136 states and 150 transitions. [2022-07-12 18:52:57,153 INFO L496 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) [2022-07-12 18:52:57,154 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 150 transitions. [2022-07-12 18:52:57,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-12 18:52:57,154 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 18:52:57,154 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 18:52:57,162 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-07-12 18:52:57,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 18:52:57,363 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_FREE === [ldv_hid_set_drvdataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_hid_set_drvdataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-07-12 18:52:57,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 18:52:57,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1753856167, now seen corresponding path program 1 times [2022-07-12 18:52:57,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 18:52:57,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1013232022] [2022-07-12 18:52:57,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 18:52:57,364 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 18:52:57,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 18:52:57,367 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 18:52:57,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-07-12 18:52:57,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 18:52:57,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-12 18:52:57,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 18:52:57,563 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 18:52:57,563 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 18:52:57,631 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 18:52:57,631 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 18:52:57,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1013232022] [2022-07-12 18:52:57,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1013232022] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 18:52:57,631 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 18:52:57,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 9 [2022-07-12 18:52:57,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360781672] [2022-07-12 18:52:57,631 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 18:52:57,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 18:52:57,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 18:52:57,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 18:52:57,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-07-12 18:52:57,632 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) [2022-07-12 18:52:57,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 18:52:57,788 INFO L93 Difference]: Finished difference Result 257 states and 286 transitions. [2022-07-12 18:52:57,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 18:52:57,788 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 [2022-07-12 18:52:57,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 18:52:57,789 INFO L225 Difference]: With dead ends: 257 [2022-07-12 18:52:57,789 INFO L226 Difference]: Without dead ends: 257 [2022-07-12 18:52:57,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-12 18:52:57,791 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 482 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 492 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 48 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 18:52:57,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [492 Valid, 469 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 126 Invalid, 0 Unknown, 48 Unchecked, 0.1s Time] [2022-07-12 18:52:57,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2022-07-12 18:52:57,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 142. [2022-07-12 18:52:57,795 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) [2022-07-12 18:52:57,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 158 transitions. [2022-07-12 18:52:57,796 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 158 transitions. Word has length 18 [2022-07-12 18:52:57,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 18:52:57,796 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 158 transitions. [2022-07-12 18:52:57,796 INFO L496 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) [2022-07-12 18:52:57,796 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 158 transitions. [2022-07-12 18:52:57,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-12 18:52:57,796 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 18:52:57,796 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 18:52:57,813 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-07-12 18:52:58,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 18:52:58,003 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_FREE === [ldv_hid_set_drvdataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_hid_set_drvdataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-07-12 18:52:58,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 18:52:58,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1465033454, now seen corresponding path program 1 times [2022-07-12 18:52:58,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 18:52:58,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1508411432] [2022-07-12 18:52:58,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 18:52:58,005 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 18:52:58,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 18:52:58,006 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 18:52:58,007 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-07-12 18:52:58,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 18:52:58,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-12 18:52:58,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 18:52:58,087 INFO L390 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 [2022-07-12 18:52:58,133 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 18:52:58,134 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 18:52:58,211 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 18:52:58,211 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 18:52:58,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1508411432] [2022-07-12 18:52:58,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1508411432] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 18:52:58,211 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 18:52:58,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2022-07-12 18:52:58,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404347677] [2022-07-12 18:52:58,212 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 18:52:58,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 18:52:58,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 18:52:58,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 18:52:58,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 18:52:58,213 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) [2022-07-12 18:52:58,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 18:52:58,535 INFO L93 Difference]: Finished difference Result 210 states and 233 transitions. [2022-07-12 18:52:58,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 18:52:58,536 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 [2022-07-12 18:52:58,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 18:52:58,536 INFO L225 Difference]: With dead ends: 210 [2022-07-12 18:52:58,536 INFO L226 Difference]: Without dead ends: 210 [2022-07-12 18:52:58,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 18:52:58,537 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 110 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 80 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 18:52:58,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 520 Invalid, 447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 357 Invalid, 0 Unknown, 80 Unchecked, 0.3s Time] [2022-07-12 18:52:58,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2022-07-12 18:52:58,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 156. [2022-07-12 18:52:58,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 97 states have (on average 1.711340206185567) internal successors, (166), 143 states have internal predecessors, (166), 7 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (12), 9 states have call predecessors, (12), 7 states have call successors, (12) [2022-07-12 18:52:58,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 185 transitions. [2022-07-12 18:52:58,541 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 185 transitions. Word has length 19 [2022-07-12 18:52:58,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 18:52:58,541 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 185 transitions. [2022-07-12 18:52:58,541 INFO L496 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) [2022-07-12 18:52:58,541 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 185 transitions. [2022-07-12 18:52:58,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-12 18:52:58,551 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 18:52:58,551 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 18:52:58,564 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-07-12 18:52:58,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 18:52:58,755 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_FREE === [ldv_hid_set_drvdataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_hid_set_drvdataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-07-12 18:52:58,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 18:52:58,756 INFO L85 PathProgramCache]: Analyzing trace with hash 42518355, now seen corresponding path program 1 times [2022-07-12 18:52:58,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 18:52:58,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1736262537] [2022-07-12 18:52:58,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 18:52:58,756 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 18:52:58,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 18:52:58,757 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 18:52:58,758 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-07-12 18:52:58,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 18:52:58,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-12 18:52:58,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 18:52:58,820 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 18:52:58,820 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 18:52:58,820 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 18:52:58,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1736262537] [2022-07-12 18:52:58,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1736262537] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 18:52:58,821 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 18:52:58,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 18:52:58,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980671078] [2022-07-12 18:52:58,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 18:52:58,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 18:52:58,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 18:52:58,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 18:52:58,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 18:52:58,822 INFO L87 Difference]: Start difference. First operand 156 states and 185 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) [2022-07-12 18:52:58,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 18:52:58,850 INFO L93 Difference]: Finished difference Result 153 states and 178 transitions. [2022-07-12 18:52:58,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 18:52:58,850 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 [2022-07-12 18:52:58,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 18:52:58,851 INFO L225 Difference]: With dead ends: 153 [2022-07-12 18:52:58,851 INFO L226 Difference]: Without dead ends: 151 [2022-07-12 18:52:58,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 18:52:58,852 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 0 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 563 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 18:52:58,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 563 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 18:52:58,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2022-07-12 18:52:58,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2022-07-12 18:52:58,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 93 states have (on average 1.7311827956989247) internal successors, (161), 140 states have internal predecessors, (161), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (9), 7 states have call predecessors, (9), 6 states have call successors, (9) [2022-07-12 18:52:58,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 176 transitions. [2022-07-12 18:52:58,856 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 176 transitions. Word has length 19 [2022-07-12 18:52:58,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 18:52:58,856 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 176 transitions. [2022-07-12 18:52:58,856 INFO L496 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) [2022-07-12 18:52:58,856 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 176 transitions. [2022-07-12 18:52:58,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-07-12 18:52:58,857 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 18:52:58,857 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 18:52:58,866 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-07-12 18:52:59,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 18:52:59,062 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_hid_set_drvdataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_hid_set_drvdataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-07-12 18:52:59,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 18:52:59,063 INFO L85 PathProgramCache]: Analyzing trace with hash 204799578, now seen corresponding path program 1 times [2022-07-12 18:52:59,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 18:52:59,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [5301408] [2022-07-12 18:52:59,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 18:52:59,063 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 18:52:59,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 18:52:59,064 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 18:52:59,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-07-12 18:52:59,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 18:52:59,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-12 18:52:59,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 18:52:59,120 INFO L390 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 [2022-07-12 18:52:59,176 INFO L356 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2022-07-12 18:52:59,177 INFO L390 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 12 treesize of output 17 [2022-07-12 18:52:59,186 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 18:52:59,187 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 18:52:59,303 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 18:52:59,303 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 18:52:59,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [5301408] [2022-07-12 18:52:59,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [5301408] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 18:52:59,303 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 18:52:59,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2022-07-12 18:52:59,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660972523] [2022-07-12 18:52:59,304 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 18:52:59,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 18:52:59,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 18:52:59,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 18:52:59,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-12 18:52:59,304 INFO L87 Difference]: Start difference. First operand 151 states and 176 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) [2022-07-12 18:52:59,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 18:52:59,595 INFO L93 Difference]: Finished difference Result 188 states and 214 transitions. [2022-07-12 18:52:59,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 18:52:59,595 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 [2022-07-12 18:52:59,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 18:52:59,596 INFO L225 Difference]: With dead ends: 188 [2022-07-12 18:52:59,597 INFO L226 Difference]: Without dead ends: 188 [2022-07-12 18:52:59,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-07-12 18:52:59,597 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 107 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 97 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 18:52:59,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 443 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 286 Invalid, 0 Unknown, 97 Unchecked, 0.3s Time] [2022-07-12 18:52:59,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2022-07-12 18:52:59,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 166. [2022-07-12 18:52:59,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 110 states have (on average 1.7) internal successors, (187), 154 states have internal predecessors, (187), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (9), 8 states have call predecessors, (9), 6 states have call successors, (9) [2022-07-12 18:52:59,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 202 transitions. [2022-07-12 18:52:59,601 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 202 transitions. Word has length 22 [2022-07-12 18:52:59,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 18:52:59,602 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 202 transitions. [2022-07-12 18:52:59,602 INFO L496 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) [2022-07-12 18:52:59,602 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 202 transitions. [2022-07-12 18:52:59,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-07-12 18:52:59,607 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 18:52:59,607 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 18:52:59,616 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-07-12 18:52:59,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 18:52:59,814 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_hid_set_drvdataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_hid_set_drvdataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-07-12 18:52:59,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 18:52:59,815 INFO L85 PathProgramCache]: Analyzing trace with hash 204799579, now seen corresponding path program 1 times [2022-07-12 18:52:59,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 18:52:59,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1646533579] [2022-07-12 18:52:59,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 18:52:59,815 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 18:52:59,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 18:52:59,816 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 18:52:59,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-07-12 18:52:59,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 18:52:59,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-12 18:52:59,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 18:52:59,890 INFO L390 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 [2022-07-12 18:52:59,893 INFO L390 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 [2022-07-12 18:53:02,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 18:53:02,030 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 14 [2022-07-12 18:53:02,062 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-12 18:53:02,063 INFO L390 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 12 treesize of output 12 [2022-07-12 18:53:02,082 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-12 18:53:02,082 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 18:53:06,316 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 18:53:06,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1646533579] [2022-07-12 18:53:06,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1646533579] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 18:53:06,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [874244389] [2022-07-12 18:53:06,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 18:53:06,317 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-07-12 18:53:06,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2022-07-12 18:53:06,332 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-07-12 18:53:06,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2022-07-12 18:53:06,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 18:53:06,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-12 18:53:06,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 18:53:06,438 INFO L390 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 [2022-07-12 18:53:06,443 INFO L390 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 [2022-07-12 18:53:08,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 18:53:08,528 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 14 [2022-07-12 18:53:08,535 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-12 18:53:08,536 INFO L390 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 12 treesize of output 12 [2022-07-12 18:53:08,539 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-12 18:53:08,540 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 18:53:08,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [874244389] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 18:53:08,673 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 18:53:08,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2022-07-12 18:53:08,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144131940] [2022-07-12 18:53:08,673 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 18:53:08,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 18:53:08,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 18:53:08,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 18:53:08,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=85, Unknown=2, NotChecked=0, Total=110 [2022-07-12 18:53:08,674 INFO L87 Difference]: Start difference. First operand 166 states and 202 transitions. Second operand has 9 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 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) [2022-07-12 18:53:09,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 18:53:09,428 INFO L93 Difference]: Finished difference Result 304 states and 351 transitions. [2022-07-12 18:53:09,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 18:53:09,429 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 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 [2022-07-12 18:53:09,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 18:53:09,430 INFO L225 Difference]: With dead ends: 304 [2022-07-12 18:53:09,430 INFO L226 Difference]: Without dead ends: 304 [2022-07-12 18:53:09,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=32, Invalid=122, Unknown=2, NotChecked=0, Total=156 [2022-07-12 18:53:09,430 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 247 mSDsluCounter, 781 mSDsCounter, 0 mSdLazyCounter, 627 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 974 SdHoareTripleChecker+Invalid, 768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 116 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-12 18:53:09,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 974 Invalid, 768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 627 Invalid, 0 Unknown, 116 Unchecked, 0.7s Time] [2022-07-12 18:53:09,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2022-07-12 18:53:09,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 237. [2022-07-12 18:53:09,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 179 states have (on average 1.7094972067039107) internal successors, (306), 223 states have internal predecessors, (306), 8 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (11), 10 states have call predecessors, (11), 8 states have call successors, (11) [2022-07-12 18:53:09,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 325 transitions. [2022-07-12 18:53:09,436 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 325 transitions. Word has length 22 [2022-07-12 18:53:09,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 18:53:09,436 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 325 transitions. [2022-07-12 18:53:09,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 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) [2022-07-12 18:53:09,436 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 325 transitions. [2022-07-12 18:53:09,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-07-12 18:53:09,436 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 18:53:09,437 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 18:53:09,441 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2022-07-12 18:53:09,644 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-07-12 18:53:09,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 18:53:09,839 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr47ASSERT_VIOLATIONMEMORY_LEAK === [ldv_hid_set_drvdataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_hid_set_drvdataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-07-12 18:53:09,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 18:53:09,839 INFO L85 PathProgramCache]: Analyzing trace with hash 852130837, now seen corresponding path program 1 times [2022-07-12 18:53:09,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 18:53:09,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [360977031] [2022-07-12 18:53:09,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 18:53:09,839 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 18:53:09,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 18:53:09,840 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 18:53:09,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-07-12 18:53:09,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 18:53:09,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-12 18:53:09,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 18:53:10,024 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 18:53:10,024 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 18:53:14,124 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 18:53:14,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [360977031] [2022-07-12 18:53:14,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [360977031] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 18:53:14,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [186700455] [2022-07-12 18:53:14,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 18:53:14,124 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-07-12 18:53:14,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2022-07-12 18:53:14,125 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-07-12 18:53:14,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2022-07-12 18:53:14,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 18:53:14,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-12 18:53:14,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 18:53:14,352 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 18:53:14,352 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 18:53:18,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [186700455] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 18:53:18,449 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 18:53:18,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2022-07-12 18:53:18,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128841538] [2022-07-12 18:53:18,449 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 18:53:18,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-12 18:53:18,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 18:53:18,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-12 18:53:18,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=166, Unknown=2, NotChecked=0, Total=210 [2022-07-12 18:53:18,449 INFO L87 Difference]: Start difference. First operand 237 states and 325 transitions. Second operand has 12 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-12 18:53:18,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 18:53:18,640 INFO L93 Difference]: Finished difference Result 245 states and 331 transitions. [2022-07-12 18:53:18,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 18:53:18,641 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 21 [2022-07-12 18:53:18,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 18:53:18,642 INFO L225 Difference]: With dead ends: 245 [2022-07-12 18:53:18,642 INFO L226 Difference]: Without dead ends: 238 [2022-07-12 18:53:18,642 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 52 SyntacticMatches, 5 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=50, Invalid=220, Unknown=2, NotChecked=0, Total=272 [2022-07-12 18:53:18,642 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 15 mSDsluCounter, 568 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 704 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 251 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 18:53:18,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 704 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 105 Invalid, 0 Unknown, 251 Unchecked, 0.2s Time] [2022-07-12 18:53:18,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2022-07-12 18:53:18,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2022-07-12 18:53:18,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 179 states have (on average 1.7039106145251397) internal successors, (305), 223 states have internal predecessors, (305), 8 states have call successors, (8), 4 states have call predecessors, (8), 5 states have return successors, (11), 10 states have call predecessors, (11), 8 states have call successors, (11) [2022-07-12 18:53:18,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 324 transitions. [2022-07-12 18:53:18,647 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 324 transitions. Word has length 21 [2022-07-12 18:53:18,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 18:53:18,647 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 324 transitions. [2022-07-12 18:53:18,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-12 18:53:18,647 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 324 transitions. [2022-07-12 18:53:18,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-07-12 18:53:18,647 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 18:53:18,647 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 18:53:18,650 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2022-07-12 18:53:18,854 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-07-12 18:53:19,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 18:53:19,048 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_hid_set_drvdataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_hid_set_drvdataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-07-12 18:53:19,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 18:53:19,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1592151781, now seen corresponding path program 1 times [2022-07-12 18:53:19,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 18:53:19,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1387430085] [2022-07-12 18:53:19,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 18:53:19,049 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 18:53:19,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 18:53:19,050 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 18:53:19,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-07-12 18:53:19,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 18:53:19,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-12 18:53:19,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 18:53:19,128 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 18:53:19,128 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 18:53:19,128 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 18:53:19,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1387430085] [2022-07-12 18:53:19,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1387430085] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 18:53:19,128 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 18:53:19,129 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 18:53:19,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92350308] [2022-07-12 18:53:19,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 18:53:19,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 18:53:19,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 18:53:19,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 18:53:19,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 18:53:19,130 INFO L87 Difference]: Start difference. First operand 238 states and 324 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) [2022-07-12 18:53:19,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 18:53:19,163 INFO L93 Difference]: Finished difference Result 151 states and 171 transitions. [2022-07-12 18:53:19,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 18:53:19,163 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 [2022-07-12 18:53:19,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 18:53:19,164 INFO L225 Difference]: With dead ends: 151 [2022-07-12 18:53:19,164 INFO L226 Difference]: Without dead ends: 147 [2022-07-12 18:53:19,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 18:53:19,164 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 0 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 522 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 18:53:19,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 522 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 18:53:19,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2022-07-12 18:53:19,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2022-07-12 18:53:19,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 98 states have (on average 1.5918367346938775) internal successors, (156), 137 states have internal predecessors, (156), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-07-12 18:53:19,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 167 transitions. [2022-07-12 18:53:19,174 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 167 transitions. Word has length 22 [2022-07-12 18:53:19,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 18:53:19,174 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 167 transitions. [2022-07-12 18:53:19,174 INFO L496 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) [2022-07-12 18:53:19,174 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 167 transitions. [2022-07-12 18:53:19,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-07-12 18:53:19,176 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 18:53:19,176 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 18:53:19,183 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-07-12 18:53:19,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 18:53:19,383 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE === [ldv_hid_set_drvdataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_hid_set_drvdataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-07-12 18:53:19,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 18:53:19,383 INFO L85 PathProgramCache]: Analyzing trace with hash 2097726863, now seen corresponding path program 1 times [2022-07-12 18:53:19,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 18:53:19,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1442823115] [2022-07-12 18:53:19,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 18:53:19,383 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 18:53:19,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 18:53:19,384 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 18:53:19,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-07-12 18:53:19,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 18:53:19,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-12 18:53:19,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 18:53:19,457 INFO L390 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 [2022-07-12 18:53:19,470 INFO L390 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 [2022-07-12 18:53:19,481 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-12 18:53:19,481 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 18:53:19,481 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 18:53:19,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1442823115] [2022-07-12 18:53:19,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1442823115] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 18:53:19,482 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 18:53:19,482 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 18:53:19,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399104822] [2022-07-12 18:53:19,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 18:53:19,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 18:53:19,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 18:53:19,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 18:53:19,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 18:53:19,483 INFO L87 Difference]: Start difference. First operand 147 states and 167 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) [2022-07-12 18:53:19,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 18:53:19,630 INFO L93 Difference]: Finished difference Result 155 states and 175 transitions. [2022-07-12 18:53:19,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 18:53:19,631 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 [2022-07-12 18:53:19,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 18:53:19,632 INFO L225 Difference]: With dead ends: 155 [2022-07-12 18:53:19,632 INFO L226 Difference]: Without dead ends: 155 [2022-07-12 18:53:19,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-12 18:53:19,632 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 5 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 648 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 18:53:19,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 648 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 18:53:19,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2022-07-12 18:53:19,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 151. [2022-07-12 18:53:19,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 102 states have (on average 1.5686274509803921) internal successors, (160), 140 states have internal predecessors, (160), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-07-12 18:53:19,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 171 transitions. [2022-07-12 18:53:19,635 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 171 transitions. Word has length 27 [2022-07-12 18:53:19,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 18:53:19,636 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 171 transitions. [2022-07-12 18:53:19,636 INFO L496 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) [2022-07-12 18:53:19,636 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 171 transitions. [2022-07-12 18:53:19,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-07-12 18:53:19,636 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 18:53:19,636 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 18:53:19,649 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-07-12 18:53:19,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 18:53:19,837 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_hid_set_drvdataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_hid_set_drvdataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-07-12 18:53:19,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 18:53:19,837 INFO L85 PathProgramCache]: Analyzing trace with hash 2097724533, now seen corresponding path program 1 times [2022-07-12 18:53:19,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 18:53:19,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [510205029] [2022-07-12 18:53:19,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 18:53:19,838 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 18:53:19,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 18:53:19,840 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 18:53:19,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-07-12 18:53:19,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 18:53:19,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-12 18:53:19,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 18:53:19,916 INFO L390 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 [2022-07-12 18:53:19,945 INFO L390 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 [2022-07-12 18:53:19,951 INFO L390 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 [2022-07-12 18:53:19,985 INFO L390 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 19 treesize of output 7 [2022-07-12 18:53:19,995 INFO L390 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 9 [2022-07-12 18:53:20,011 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-12 18:53:20,011 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 18:53:20,011 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 18:53:20,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [510205029] [2022-07-12 18:53:20,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [510205029] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 18:53:20,011 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 18:53:20,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 18:53:20,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921674331] [2022-07-12 18:53:20,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 18:53:20,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 18:53:20,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 18:53:20,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 18:53:20,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 18:53:20,012 INFO L87 Difference]: Start difference. First operand 151 states and 171 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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) [2022-07-12 18:53:20,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 18:53:20,347 INFO L93 Difference]: Finished difference Result 155 states and 175 transitions. [2022-07-12 18:53:20,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 18:53:20,347 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), 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 [2022-07-12 18:53:20,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 18:53:20,348 INFO L225 Difference]: With dead ends: 155 [2022-07-12 18:53:20,348 INFO L226 Difference]: Without dead ends: 155 [2022-07-12 18:53:20,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-12 18:53:20,348 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 8 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 18:53:20,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 641 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 18:53:20,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2022-07-12 18:53:20,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 153. [2022-07-12 18:53:20,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 104 states have (on average 1.5673076923076923) internal successors, (163), 142 states have internal predecessors, (163), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-07-12 18:53:20,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 174 transitions. [2022-07-12 18:53:20,351 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 174 transitions. Word has length 27 [2022-07-12 18:53:20,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 18:53:20,351 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 174 transitions. [2022-07-12 18:53:20,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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) [2022-07-12 18:53:20,351 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 174 transitions. [2022-07-12 18:53:20,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-07-12 18:53:20,352 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 18:53:20,352 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 18:53:20,363 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-07-12 18:53:20,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 18:53:20,558 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_hid_set_drvdataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_hid_set_drvdataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-07-12 18:53:20,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 18:53:20,558 INFO L85 PathProgramCache]: Analyzing trace with hash 2097724532, now seen corresponding path program 1 times [2022-07-12 18:53:20,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 18:53:20,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1018896348] [2022-07-12 18:53:20,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 18:53:20,559 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 18:53:20,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 18:53:20,560 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 18:53:20,561 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-07-12 18:53:20,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 18:53:20,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-12 18:53:20,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 18:53:20,624 INFO L390 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 [2022-07-12 18:53:20,638 INFO L390 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 [2022-07-12 18:53:20,657 INFO L390 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 9 [2022-07-12 18:53:20,664 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-12 18:53:20,664 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 18:53:20,665 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 18:53:20,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1018896348] [2022-07-12 18:53:20,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1018896348] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 18:53:20,665 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 18:53:20,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 18:53:20,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721384635] [2022-07-12 18:53:20,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 18:53:20,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 18:53:20,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 18:53:20,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 18:53:20,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 18:53:20,666 INFO L87 Difference]: Start difference. First operand 153 states and 174 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) [2022-07-12 18:53:20,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 18:53:20,917 INFO L93 Difference]: Finished difference Result 153 states and 173 transitions. [2022-07-12 18:53:20,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 18:53:20,918 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 [2022-07-12 18:53:20,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 18:53:20,919 INFO L225 Difference]: With dead ends: 153 [2022-07-12 18:53:20,919 INFO L226 Difference]: Without dead ends: 153 [2022-07-12 18:53:20,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-12 18:53:20,920 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 2 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 18:53:20,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 477 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 18:53:20,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2022-07-12 18:53:20,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2022-07-12 18:53:20,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 104 states have (on average 1.5576923076923077) internal successors, (162), 142 states have internal predecessors, (162), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-07-12 18:53:20,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 173 transitions. [2022-07-12 18:53:20,923 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 173 transitions. Word has length 27 [2022-07-12 18:53:20,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 18:53:20,923 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 173 transitions. [2022-07-12 18:53:20,923 INFO L496 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) [2022-07-12 18:53:20,923 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 173 transitions. [2022-07-12 18:53:20,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-07-12 18:53:20,924 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 18:53:20,924 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 18:53:20,930 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-07-12 18:53:21,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 18:53:21,131 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE === [ldv_hid_set_drvdataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_hid_set_drvdataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-07-12 18:53:21,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 18:53:21,131 INFO L85 PathProgramCache]: Analyzing trace with hash 290272400, now seen corresponding path program 1 times [2022-07-12 18:53:21,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 18:53:21,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1735547967] [2022-07-12 18:53:21,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 18:53:21,132 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 18:53:21,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 18:53:21,133 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 18:53:21,137 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-07-12 18:53:21,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 18:53:21,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-12 18:53:21,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 18:53:21,399 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-12 18:53:21,399 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 18:53:21,475 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-12 18:53:21,475 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 18:53:21,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1735547967] [2022-07-12 18:53:21,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1735547967] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 18:53:21,475 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 18:53:21,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 9 [2022-07-12 18:53:21,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857717089] [2022-07-12 18:53:21,475 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 18:53:21,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 18:53:21,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 18:53:21,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 18:53:21,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-07-12 18:53:21,476 INFO L87 Difference]: Start difference. First operand 153 states and 173 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) [2022-07-12 18:53:21,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 18:53:21,483 INFO L93 Difference]: Finished difference Result 153 states and 172 transitions. [2022-07-12 18:53:21,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 18:53:21,485 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 [2022-07-12 18:53:21,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 18:53:21,486 INFO L225 Difference]: With dead ends: 153 [2022-07-12 18:53:21,486 INFO L226 Difference]: Without dead ends: 153 [2022-07-12 18:53:21,486 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-07-12 18:53:21,486 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 10 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 583 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 34 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 18:53:21,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 583 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 34 Unchecked, 0.0s Time] [2022-07-12 18:53:21,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2022-07-12 18:53:21,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2022-07-12 18:53:21,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 104 states have (on average 1.5480769230769231) internal successors, (161), 142 states have internal predecessors, (161), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-07-12 18:53:21,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 172 transitions. [2022-07-12 18:53:21,491 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 172 transitions. Word has length 27 [2022-07-12 18:53:21,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 18:53:21,491 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 172 transitions. [2022-07-12 18:53:21,492 INFO L496 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) [2022-07-12 18:53:21,492 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 172 transitions. [2022-07-12 18:53:21,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-07-12 18:53:21,493 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 18:53:21,493 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 18:53:21,501 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-07-12 18:53:21,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 18:53:21,696 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_hid_set_drvdataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_hid_set_drvdataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-07-12 18:53:21,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 18:53:21,696 INFO L85 PathProgramCache]: Analyzing trace with hash 290270070, now seen corresponding path program 1 times [2022-07-12 18:53:21,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 18:53:21,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1816335336] [2022-07-12 18:53:21,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 18:53:21,696 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 18:53:21,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 18:53:21,697 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 18:53:21,698 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-07-12 18:53:21,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 18:53:21,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-12 18:53:21,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 18:53:21,780 INFO L390 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 [2022-07-12 18:53:21,785 INFO L390 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 [2022-07-12 18:53:21,805 INFO L390 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 19 treesize of output 7 [2022-07-12 18:53:21,826 INFO L390 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 19 treesize of output 7 [2022-07-12 18:53:21,838 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-12 18:53:21,838 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 18:53:21,838 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 18:53:21,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1816335336] [2022-07-12 18:53:21,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1816335336] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 18:53:21,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 18:53:21,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 18:53:21,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733293270] [2022-07-12 18:53:21,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 18:53:21,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 18:53:21,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 18:53:21,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 18:53:21,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 18:53:21,839 INFO L87 Difference]: Start difference. First operand 153 states and 172 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) [2022-07-12 18:53:21,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 18:53:21,974 INFO L93 Difference]: Finished difference Result 156 states and 173 transitions. [2022-07-12 18:53:21,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 18:53:21,975 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 [2022-07-12 18:53:21,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 18:53:21,976 INFO L225 Difference]: With dead ends: 156 [2022-07-12 18:53:21,976 INFO L226 Difference]: Without dead ends: 156 [2022-07-12 18:53:21,976 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-12 18:53:21,976 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 11 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 607 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 18:53:21,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 607 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 18:53:21,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2022-07-12 18:53:21,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 149. [2022-07-12 18:53:21,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 102 states have (on average 1.5294117647058822) internal successors, (156), 138 states have internal predecessors, (156), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-07-12 18:53:21,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 167 transitions. [2022-07-12 18:53:21,979 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 167 transitions. Word has length 27 [2022-07-12 18:53:21,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 18:53:21,979 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 167 transitions. [2022-07-12 18:53:21,979 INFO L496 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) [2022-07-12 18:53:21,981 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 167 transitions. [2022-07-12 18:53:21,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-07-12 18:53:21,981 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 18:53:21,981 INFO L195 NwaCegarLoop]: 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] [2022-07-12 18:53:21,991 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-07-12 18:53:22,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 18:53:22,188 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_hid_set_drvdataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_hid_set_drvdataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-07-12 18:53:22,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 18:53:22,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1573614037, now seen corresponding path program 1 times [2022-07-12 18:53:22,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 18:53:22,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1171886349] [2022-07-12 18:53:22,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 18:53:22,189 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 18:53:22,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 18:53:22,190 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 18:53:22,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-07-12 18:53:22,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 18:53:22,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-12 18:53:22,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 18:53:22,261 INFO L390 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 [2022-07-12 18:53:22,314 INFO L356 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-07-12 18:53:22,314 INFO L390 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 18 treesize of output 25 [2022-07-12 18:53:24,351 INFO L356 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2022-07-12 18:53:24,352 INFO L390 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 12 treesize of output 17 [2022-07-12 18:53:24,380 INFO L390 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 [2022-07-12 18:53:24,416 INFO L390 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 11 treesize of output 5 [2022-07-12 18:53:24,426 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 2 refuted. 2 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 18:53:24,426 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 18:53:24,956 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-12 18:53:24,956 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 18:53:24,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1171886349] [2022-07-12 18:53:24,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1171886349] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 18:53:24,956 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 18:53:24,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 10 [2022-07-12 18:53:24,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737823097] [2022-07-12 18:53:24,957 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 18:53:24,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 18:53:24,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 18:53:24,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 18:53:24,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=84, Unknown=1, NotChecked=0, Total=110 [2022-07-12 18:53:24,958 INFO L87 Difference]: Start difference. First operand 149 states and 167 transitions. Second operand has 11 states, 10 states have (on average 3.0) internal successors, (30), 9 states have internal predecessors, (30), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 18:53:29,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 18:53:29,440 INFO L93 Difference]: Finished difference Result 172 states and 184 transitions. [2022-07-12 18:53:29,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 18:53:29,441 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.0) internal successors, (30), 9 states have internal predecessors, (30), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 29 [2022-07-12 18:53:29,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 18:53:29,442 INFO L225 Difference]: With dead ends: 172 [2022-07-12 18:53:29,442 INFO L226 Difference]: Without dead ends: 172 [2022-07-12 18:53:29,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 38 SyntacticMatches, 9 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=36, Invalid=118, Unknown=2, NotChecked=0, Total=156 [2022-07-12 18:53:29,442 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 94 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 664 SdHoareTripleChecker+Invalid, 522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 68 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 18:53:29,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 664 Invalid, 522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 450 Invalid, 0 Unknown, 68 Unchecked, 0.4s Time] [2022-07-12 18:53:29,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2022-07-12 18:53:29,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 148. [2022-07-12 18:53:29,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 102 states have (on average 1.5196078431372548) internal successors, (155), 137 states have internal predecessors, (155), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-07-12 18:53:29,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 166 transitions. [2022-07-12 18:53:29,445 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 166 transitions. Word has length 29 [2022-07-12 18:53:29,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 18:53:29,446 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 166 transitions. [2022-07-12 18:53:29,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.0) internal successors, (30), 9 states have internal predecessors, (30), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 18:53:29,446 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 166 transitions. [2022-07-12 18:53:29,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-07-12 18:53:29,446 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 18:53:29,446 INFO L195 NwaCegarLoop]: 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] [2022-07-12 18:53:29,454 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Ended with exit code 0 [2022-07-12 18:53:29,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 18:53:29,653 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_hid_set_drvdataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_hid_set_drvdataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-07-12 18:53:29,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 18:53:29,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1573614038, now seen corresponding path program 1 times [2022-07-12 18:53:29,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 18:53:29,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [611742676] [2022-07-12 18:53:29,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 18:53:29,654 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 18:53:29,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 18:53:29,655 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 18:53:29,656 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-07-12 18:53:29,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 18:53:29,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 25 conjunts are in the unsatisfiable core [2022-07-12 18:53:29,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 18:53:29,745 INFO L390 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 [2022-07-12 18:53:29,750 INFO L390 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 [2022-07-12 18:53:29,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 18:53:29,855 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 14 [2022-07-12 18:53:29,869 INFO L356 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-07-12 18:53:29,870 INFO L390 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 18 treesize of output 25 [2022-07-12 18:53:29,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 18:53:29,946 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 14 [2022-07-12 18:53:29,958 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-12 18:53:29,959 INFO L390 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 12 treesize of output 12 [2022-07-12 18:53:30,029 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 18:53:30,029 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 18:53:30,289 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 18:53:30,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [611742676] [2022-07-12 18:53:30,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [611742676] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 18:53:30,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [698369842] [2022-07-12 18:53:30,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 18:53:30,290 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-07-12 18:53:30,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2022-07-12 18:53:30,291 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-07-12 18:53:30,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2022-07-12 18:53:30,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 18:53:30,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 25 conjunts are in the unsatisfiable core [2022-07-12 18:53:30,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 18:53:30,427 INFO L390 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 [2022-07-12 18:53:30,432 INFO L390 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 [2022-07-12 18:53:30,511 INFO L356 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-07-12 18:53:30,511 INFO L390 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 18 treesize of output 25 [2022-07-12 18:53:30,516 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 14 [2022-07-12 18:53:30,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 18:53:30,583 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 14 [2022-07-12 18:53:30,591 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-12 18:53:30,591 INFO L390 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 12 treesize of output 12 [2022-07-12 18:53:30,615 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 18:53:30,615 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 18:53:34,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [698369842] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 18:53:34,811 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 18:53:34,811 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2022-07-12 18:53:34,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72481622] [2022-07-12 18:53:34,812 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 18:53:34,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 18:53:34,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 18:53:34,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 18:53:34,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-07-12 18:53:34,812 INFO L87 Difference]: Start difference. First operand 148 states and 166 transitions. Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 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) [2022-07-12 18:53:35,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 18:53:35,271 INFO L93 Difference]: Finished difference Result 171 states and 183 transitions. [2022-07-12 18:53:35,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 18:53:35,271 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 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 29 [2022-07-12 18:53:35,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 18:53:35,272 INFO L225 Difference]: With dead ends: 171 [2022-07-12 18:53:35,272 INFO L226 Difference]: Without dead ends: 171 [2022-07-12 18:53:35,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 59 SyntacticMatches, 5 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-07-12 18:53:35,273 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 151 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 174 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 18:53:35,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 460 Invalid, 571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 385 Invalid, 0 Unknown, 174 Unchecked, 0.4s Time] [2022-07-12 18:53:35,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2022-07-12 18:53:35,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 147. [2022-07-12 18:53:35,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 102 states have (on average 1.5098039215686274) internal successors, (154), 136 states have internal predecessors, (154), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-07-12 18:53:35,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 165 transitions. [2022-07-12 18:53:35,276 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 165 transitions. Word has length 29 [2022-07-12 18:53:35,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 18:53:35,276 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 165 transitions. [2022-07-12 18:53:35,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 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) [2022-07-12 18:53:35,276 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 165 transitions. [2022-07-12 18:53:35,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-07-12 18:53:35,276 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 18:53:35,277 INFO L195 NwaCegarLoop]: 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] [2022-07-12 18:53:35,286 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (22)] Ended with exit code 0 [2022-07-12 18:53:35,485 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-07-12 18:53:35,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 18:53:35,679 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_hid_set_drvdataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_hid_set_drvdataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-07-12 18:53:35,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 18:53:35,679 INFO L85 PathProgramCache]: Analyzing trace with hash 414602102, now seen corresponding path program 1 times [2022-07-12 18:53:35,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 18:53:35,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [607245207] [2022-07-12 18:53:35,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 18:53:35,680 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 18:53:35,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 18:53:35,681 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 18:53:35,682 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-07-12 18:53:35,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 18:53:35,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-12 18:53:35,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 18:53:35,765 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-12 18:53:35,765 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 18:53:35,765 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 18:53:35,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [607245207] [2022-07-12 18:53:35,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [607245207] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 18:53:35,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 18:53:35,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 18:53:35,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271909762] [2022-07-12 18:53:35,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 18:53:35,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 18:53:35,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 18:53:35,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 18:53:35,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 18:53:35,767 INFO L87 Difference]: Start difference. First operand 147 states and 165 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) [2022-07-12 18:53:35,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 18:53:35,910 INFO L93 Difference]: Finished difference Result 170 states and 182 transitions. [2022-07-12 18:53:35,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 18:53:35,911 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 [2022-07-12 18:53:35,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 18:53:35,911 INFO L225 Difference]: With dead ends: 170 [2022-07-12 18:53:35,911 INFO L226 Difference]: Without dead ends: 170 [2022-07-12 18:53:35,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 18:53:35,912 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 155 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 18:53:35,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 203 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 18:53:35,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2022-07-12 18:53:35,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 146. [2022-07-12 18:53:35,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 102 states have (on average 1.5) internal successors, (153), 135 states have internal predecessors, (153), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-07-12 18:53:35,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 164 transitions. [2022-07-12 18:53:35,915 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 164 transitions. Word has length 31 [2022-07-12 18:53:35,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 18:53:35,915 INFO L495 AbstractCegarLoop]: Abstraction has 146 states and 164 transitions. [2022-07-12 18:53:35,915 INFO L496 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) [2022-07-12 18:53:35,916 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 164 transitions. [2022-07-12 18:53:35,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-07-12 18:53:35,916 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 18:53:35,916 INFO L195 NwaCegarLoop]: 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] [2022-07-12 18:53:35,924 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-07-12 18:53:36,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 18:53:36,123 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_hid_set_drvdataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_hid_set_drvdataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-07-12 18:53:36,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 18:53:36,123 INFO L85 PathProgramCache]: Analyzing trace with hash 414602103, now seen corresponding path program 1 times [2022-07-12 18:53:36,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 18:53:36,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1995774320] [2022-07-12 18:53:36,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 18:53:36,123 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 18:53:36,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 18:53:36,124 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 18:53:36,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-07-12 18:53:36,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 18:53:36,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-12 18:53:36,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 18:53:36,252 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-12 18:53:36,252 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 18:53:36,335 INFO L390 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 [2022-07-12 18:53:36,472 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-12 18:53:36,472 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 18:53:36,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1995774320] [2022-07-12 18:53:36,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1995774320] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 18:53:36,472 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 18:53:36,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2022-07-12 18:53:36,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839376465] [2022-07-12 18:53:36,472 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 18:53:36,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-12 18:53:36,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 18:53:36,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-12 18:53:36,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-07-12 18:53:36,473 INFO L87 Difference]: Start difference. First operand 146 states and 164 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) [2022-07-12 18:53:36,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 18:53:36,953 INFO L93 Difference]: Finished difference Result 152 states and 169 transitions. [2022-07-12 18:53:36,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 18:53:36,953 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 [2022-07-12 18:53:36,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 18:53:36,954 INFO L225 Difference]: With dead ends: 152 [2022-07-12 18:53:36,954 INFO L226 Difference]: Without dead ends: 152 [2022-07-12 18:53:36,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-07-12 18:53:36,955 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 388 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 18:53:36,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [388 Valid, 473 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-12 18:53:36,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2022-07-12 18:53:36,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 145. [2022-07-12 18:53:36,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 102 states have (on average 1.4901960784313726) internal successors, (152), 134 states have internal predecessors, (152), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-07-12 18:53:36,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 163 transitions. [2022-07-12 18:53:36,958 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 163 transitions. Word has length 31 [2022-07-12 18:53:36,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 18:53:36,958 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 163 transitions. [2022-07-12 18:53:36,958 INFO L496 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) [2022-07-12 18:53:36,958 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 163 transitions. [2022-07-12 18:53:36,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-07-12 18:53:36,958 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 18:53:36,959 INFO L195 NwaCegarLoop]: 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] [2022-07-12 18:53:36,967 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-07-12 18:53:37,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 18:53:37,165 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_FREE === [ldv_hid_set_drvdataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_hid_set_drvdataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-07-12 18:53:37,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 18:53:37,165 INFO L85 PathProgramCache]: Analyzing trace with hash -2015159051, now seen corresponding path program 1 times [2022-07-12 18:53:37,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 18:53:37,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [969011678] [2022-07-12 18:53:37,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 18:53:37,166 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 18:53:37,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 18:53:37,167 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 18:53:37,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-07-12 18:53:37,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 18:53:37,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 14 conjunts are in the unsatisfiable core [2022-07-12 18:53:37,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 18:53:37,241 INFO L390 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 [2022-07-12 18:53:37,292 INFO L356 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-07-12 18:53:37,292 INFO L390 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 18 treesize of output 25 [2022-07-12 18:53:37,359 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 15 treesize of output 17 [2022-07-12 18:53:37,373 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 18:53:37,373 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 18:53:37,598 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 18:53:37,598 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 18:53:37,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [969011678] [2022-07-12 18:53:37,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [969011678] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 18:53:37,598 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 18:53:37,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2022-07-12 18:53:37,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555360492] [2022-07-12 18:53:37,598 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 18:53:37,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 18:53:37,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 18:53:37,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 18:53:37,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-07-12 18:53:37,599 INFO L87 Difference]: Start difference. First operand 145 states and 163 transitions. Second operand has 11 states, 10 states have (on average 2.9) internal successors, (29), 9 states have internal predecessors, (29), 3 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-07-12 18:53:37,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 18:53:37,887 INFO L93 Difference]: Finished difference Result 172 states and 184 transitions. [2022-07-12 18:53:37,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 18:53:37,888 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.9) internal successors, (29), 9 states have internal predecessors, (29), 3 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 31 [2022-07-12 18:53:37,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 18:53:37,889 INFO L225 Difference]: With dead ends: 172 [2022-07-12 18:53:37,889 INFO L226 Difference]: Without dead ends: 172 [2022-07-12 18:53:37,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 48 SyntacticMatches, 4 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-07-12 18:53:37,889 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 91 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 83 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 18:53:37,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 436 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 273 Invalid, 0 Unknown, 83 Unchecked, 0.3s Time] [2022-07-12 18:53:37,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2022-07-12 18:53:37,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 148. [2022-07-12 18:53:37,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 105 states have (on average 1.4761904761904763) internal successors, (155), 137 states have internal predecessors, (155), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-07-12 18:53:37,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 166 transitions. [2022-07-12 18:53:37,892 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 166 transitions. Word has length 31 [2022-07-12 18:53:37,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 18:53:37,892 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 166 transitions. [2022-07-12 18:53:37,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.9) internal successors, (29), 9 states have internal predecessors, (29), 3 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-07-12 18:53:37,893 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 166 transitions. [2022-07-12 18:53:37,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-07-12 18:53:37,893 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 18:53:37,893 INFO L195 NwaCegarLoop]: 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] [2022-07-12 18:53:37,902 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-07-12 18:53:38,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 18:53:38,107 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_hid_set_drvdataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_hid_set_drvdataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-07-12 18:53:38,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 18:53:38,108 INFO L85 PathProgramCache]: Analyzing trace with hash -999337641, now seen corresponding path program 1 times [2022-07-12 18:53:38,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 18:53:38,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2119470240] [2022-07-12 18:53:38,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 18:53:38,108 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 18:53:38,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 18:53:38,109 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 18:53:38,110 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-07-12 18:53:38,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 18:53:38,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 22 conjunts are in the unsatisfiable core [2022-07-12 18:53:38,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 18:53:38,256 INFO L390 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 [2022-07-12 18:53:38,289 INFO L390 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 9 [2022-07-12 18:53:38,308 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-12 18:53:38,309 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 18:53:38,380 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-12 18:53:38,380 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 18:53:38,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2119470240] [2022-07-12 18:53:38,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2119470240] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-12 18:53:38,380 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 18:53:38,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 13 [2022-07-12 18:53:38,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168515120] [2022-07-12 18:53:38,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 18:53:38,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 18:53:38,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 18:53:38,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 18:53:38,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-07-12 18:53:38,381 INFO L87 Difference]: Start difference. First operand 148 states and 166 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) [2022-07-12 18:53:38,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 18:53:38,792 INFO L93 Difference]: Finished difference Result 208 states and 223 transitions. [2022-07-12 18:53:38,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 18:53:38,792 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 [2022-07-12 18:53:38,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 18:53:38,793 INFO L225 Difference]: With dead ends: 208 [2022-07-12 18:53:38,793 INFO L226 Difference]: Without dead ends: 208 [2022-07-12 18:53:38,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2022-07-12 18:53:38,794 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 334 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 18:53:38,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [334 Valid, 397 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 18:53:38,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2022-07-12 18:53:38,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 147. [2022-07-12 18:53:38,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 105 states have (on average 1.4666666666666666) internal successors, (154), 136 states have internal predecessors, (154), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-07-12 18:53:38,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 165 transitions. [2022-07-12 18:53:38,797 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 165 transitions. Word has length 33 [2022-07-12 18:53:38,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 18:53:38,797 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 165 transitions. [2022-07-12 18:53:38,798 INFO L496 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) [2022-07-12 18:53:38,798 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 165 transitions. [2022-07-12 18:53:38,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-07-12 18:53:38,798 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 18:53:38,798 INFO L195 NwaCegarLoop]: 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] [2022-07-12 18:53:38,808 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-07-12 18:53:39,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 18:53:39,005 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_hid_set_drvdataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_hid_set_drvdataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-07-12 18:53:39,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 18:53:39,005 INFO L85 PathProgramCache]: Analyzing trace with hash -999337640, now seen corresponding path program 1 times [2022-07-12 18:53:39,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 18:53:39,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1767171015] [2022-07-12 18:53:39,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 18:53:39,006 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 18:53:39,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 18:53:39,007 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 18:53:39,007 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-07-12 18:53:39,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 18:53:39,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 28 conjunts are in the unsatisfiable core [2022-07-12 18:53:39,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 18:53:39,178 INFO L390 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 [2022-07-12 18:53:39,184 INFO L390 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 [2022-07-12 18:53:39,225 INFO L390 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 15 treesize of output 7 [2022-07-12 18:53:39,227 INFO L390 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 9 [2022-07-12 18:53:39,261 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-12 18:53:39,261 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 18:53:39,523 INFO L390 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 [2022-07-12 18:53:39,651 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-12 18:53:39,651 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 18:53:39,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1767171015] [2022-07-12 18:53:39,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1767171015] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 18:53:39,651 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 18:53:39,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 19 [2022-07-12 18:53:39,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536614022] [2022-07-12 18:53:39,651 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 18:53:39,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-12 18:53:39,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 18:53:39,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-12 18:53:39,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2022-07-12 18:53:39,652 INFO L87 Difference]: Start difference. First operand 147 states and 165 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) [2022-07-12 18:53:40,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 18:53:40,829 INFO L93 Difference]: Finished difference Result 202 states and 221 transitions. [2022-07-12 18:53:40,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-12 18:53:40,829 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 [2022-07-12 18:53:40,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 18:53:40,830 INFO L225 Difference]: With dead ends: 202 [2022-07-12 18:53:40,830 INFO L226 Difference]: Without dead ends: 202 [2022-07-12 18:53:40,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=113, Invalid=487, Unknown=0, NotChecked=0, Total=600 [2022-07-12 18:53:40,831 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 669 mSDsluCounter, 661 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 670 SdHoareTripleChecker+Valid, 749 SdHoareTripleChecker+Invalid, 487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-12 18:53:40,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [670 Valid, 749 Invalid, 487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-12 18:53:40,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2022-07-12 18:53:40,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 146. [2022-07-12 18:53:40,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 105 states have (on average 1.457142857142857) internal successors, (153), 135 states have internal predecessors, (153), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-07-12 18:53:40,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 164 transitions. [2022-07-12 18:53:40,834 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 164 transitions. Word has length 33 [2022-07-12 18:53:40,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 18:53:40,834 INFO L495 AbstractCegarLoop]: Abstraction has 146 states and 164 transitions. [2022-07-12 18:53:40,834 INFO L496 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) [2022-07-12 18:53:40,834 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 164 transitions. [2022-07-12 18:53:40,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-07-12 18:53:40,835 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 18:53:40,838 INFO L195 NwaCegarLoop]: 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] [2022-07-12 18:53:40,845 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-07-12 18:53:41,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 18:53:41,039 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr47ASSERT_VIOLATIONMEMORY_LEAK === [ldv_hid_set_drvdataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_hid_set_drvdataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-07-12 18:53:41,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 18:53:41,040 INFO L85 PathProgramCache]: Analyzing trace with hash 462409528, now seen corresponding path program 1 times [2022-07-12 18:53:41,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 18:53:41,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [197302135] [2022-07-12 18:53:41,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 18:53:41,040 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 18:53:41,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 18:53:41,041 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 18:53:41,042 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-07-12 18:53:41,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 18:53:41,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 20 conjunts are in the unsatisfiable core [2022-07-12 18:53:41,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 18:53:43,410 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-12 18:53:43,410 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 18:53:45,595 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 18:53:45,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [197302135] [2022-07-12 18:53:45,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [197302135] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 18:53:45,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1304031083] [2022-07-12 18:53:45,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 18:53:45,596 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-07-12 18:53:45,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2022-07-12 18:53:45,597 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-07-12 18:53:45,614 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2022-07-12 18:53:45,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 18:53:45,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 24 conjunts are in the unsatisfiable core [2022-07-12 18:53:45,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 18:54:02,372 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-12 18:54:02,373 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 18:54:06,590 INFO L390 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 13 treesize of output 11 [2022-07-12 18:54:08,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1304031083] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 18:54:08,914 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 18:54:08,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12] total 20 [2022-07-12 18:54:08,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741939370] [2022-07-12 18:54:08,915 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 18:54:08,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-12 18:54:08,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 18:54:08,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-12 18:54:08,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=782, Unknown=12, NotChecked=0, Total=930 [2022-07-12 18:54:08,916 INFO L87 Difference]: Start difference. First operand 146 states and 164 transitions. Second operand has 21 states, 17 states have (on average 2.411764705882353) internal successors, (41), 17 states have internal predecessors, (41), 6 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-07-12 18:54:09,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 18:54:09,159 INFO L93 Difference]: Finished difference Result 148 states and 165 transitions. [2022-07-12 18:54:09,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-12 18:54:09,159 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 17 states have (on average 2.411764705882353) internal successors, (41), 17 states have internal predecessors, (41), 6 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 33 [2022-07-12 18:54:09,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 18:54:09,160 INFO L225 Difference]: With dead ends: 148 [2022-07-12 18:54:09,160 INFO L226 Difference]: Without dead ends: 134 [2022-07-12 18:54:09,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 71 SyntacticMatches, 4 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 27.1s TimeCoverageRelationStatistics Valid=145, Invalid=899, Unknown=12, NotChecked=0, Total=1056 [2022-07-12 18:54:09,161 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 10 mSDsluCounter, 898 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1007 SdHoareTripleChecker+Invalid, 692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 516 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 18:54:09,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 1007 Invalid, 692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 172 Invalid, 0 Unknown, 516 Unchecked, 0.2s Time] [2022-07-12 18:54:09,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2022-07-12 18:54:09,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 132. [2022-07-12 18:54:09,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 92 states have (on average 1.5108695652173914) internal successors, (139), 123 states have internal predecessors, (139), 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) [2022-07-12 18:54:09,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 149 transitions. [2022-07-12 18:54:09,163 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 149 transitions. Word has length 33 [2022-07-12 18:54:09,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 18:54:09,163 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 149 transitions. [2022-07-12 18:54:09,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 17 states have (on average 2.411764705882353) internal successors, (41), 17 states have internal predecessors, (41), 6 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-07-12 18:54:09,164 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 149 transitions. [2022-07-12 18:54:09,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-07-12 18:54:09,164 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 18:54:09,164 INFO L195 NwaCegarLoop]: 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] [2022-07-12 18:54:09,179 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (29)] Forceful destruction successful, exit code 0 [2022-07-12 18:54:09,371 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-07-12 18:54:09,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 18:54:09,565 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_hid_set_drvdataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_hid_set_drvdataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-07-12 18:54:09,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 18:54:09,565 INFO L85 PathProgramCache]: Analyzing trace with hash -914695768, now seen corresponding path program 1 times [2022-07-12 18:54:09,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 18:54:09,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [383624657] [2022-07-12 18:54:09,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 18:54:09,565 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 18:54:09,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 18:54:09,566 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 18:54:09,567 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-07-12 18:54:09,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 18:54:09,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 51 conjunts are in the unsatisfiable core [2022-07-12 18:54:09,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 18:54:09,680 INFO L390 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 [2022-07-12 18:54:09,773 INFO L356 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-07-12 18:54:09,773 INFO L390 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 18 treesize of output 25 [2022-07-12 18:54:09,884 INFO L356 Elim1Store]: treesize reduction 30, result has 45.5 percent of original size [2022-07-12 18:54:09,884 INFO L390 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 24 treesize of output 41 [2022-07-12 18:54:09,939 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 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 [2022-07-12 18:54:10,161 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-12 18:54:10,162 INFO L390 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 44 treesize of output 43 [2022-07-12 18:54:10,206 INFO L390 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 [2022-07-12 18:54:10,212 INFO L390 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 39 treesize of output 30 [2022-07-12 18:54:10,334 INFO L390 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 15 treesize of output 7 [2022-07-12 18:54:10,452 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 18:54:10,452 INFO L390 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 72 treesize of output 31 [2022-07-12 18:54:10,509 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 18:54:10,509 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 18:54:10,933 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_408 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select |c_#valid| (let ((.cse1 (bvadd (_ bv4 32) |c_ULTIMATE.start_entry_point_~intf~2#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~intf~2#1.base|) .cse1) v_ArrVal_408))) (store .cse0 |c_ULTIMATE.start_entry_point_~hdev~0#1.base| (store (select .cse0 |c_ULTIMATE.start_entry_point_~hdev~0#1.base|) (bvadd |c_ULTIMATE.start_entry_point_~hdev~0#1.offset| (_ bv8 32)) |c_ULTIMATE.start_entry_point_~intf~2#1.base|))) |c_ULTIMATE.start_entry_point_~intf~2#1.base|) .cse1))) (_ bv1 1))) is different from false [2022-07-12 18:54:10,958 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 18:54:10,958 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 38 [2022-07-12 18:54:10,976 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 18:54:10,976 INFO L390 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 180 treesize of output 178 [2022-07-12 18:54:10,982 INFO L390 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 198 treesize of output 182 [2022-07-12 18:54:10,998 INFO L390 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 108 treesize of output 100 [2022-07-12 18:54:11,452 INFO L390 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 424 treesize of output 396 [2022-07-12 18:54:26,675 WARN L233 SmtUtils]: Spent 12.14s on a formula simplification. DAG size of input: 54 DAG size of output: 17 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-12 18:54:26,676 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 18:54:26,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [383624657] [2022-07-12 18:54:26,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [383624657] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 18:54:26,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [430496445] [2022-07-12 18:54:26,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 18:54:26,676 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-07-12 18:54:26,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2022-07-12 18:54:26,677 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-07-12 18:54:26,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (31)] Waiting until timeout for monitored process [2022-07-12 18:54:26,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 18:54:26,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 52 conjunts are in the unsatisfiable core [2022-07-12 18:54:26,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 18:54:26,841 INFO L390 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 [2022-07-12 18:54:26,885 INFO L356 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-07-12 18:54:26,886 INFO L390 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 18 treesize of output 25 [2022-07-12 18:54:26,950 INFO L356 Elim1Store]: treesize reduction 30, result has 45.5 percent of original size [2022-07-12 18:54:26,950 INFO L390 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 24 treesize of output 41 [2022-07-12 18:54:26,973 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 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 [2022-07-12 18:54:27,076 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-12 18:54:27,076 INFO L390 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 44 treesize of output 43 [2022-07-12 18:54:27,114 INFO L390 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 39 treesize of output 30 [2022-07-12 18:54:27,129 INFO L390 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 [2022-07-12 18:54:27,159 INFO L390 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 15 treesize of output 7 [2022-07-12 18:54:27,204 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 18:54:27,204 INFO L390 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 72 treesize of output 31 [2022-07-12 18:54:27,254 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 18:54:27,254 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 18:54:27,411 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 18:54:27,412 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 38 [2022-07-12 18:54:27,422 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 18:54:27,423 INFO L390 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 180 treesize of output 178 [2022-07-12 18:54:27,428 INFO L390 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 198 treesize of output 182 [2022-07-12 18:54:27,443 INFO L390 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 108 treesize of output 100 [2022-07-12 18:54:27,685 INFO L390 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 235 treesize of output 219 [2022-07-12 18:54:30,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [430496445] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 18:54:30,089 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 18:54:30,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2022-07-12 18:54:30,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404978165] [2022-07-12 18:54:30,089 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 18:54:30,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-12 18:54:30,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 18:54:30,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-12 18:54:30,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=624, Unknown=4, NotChecked=50, Total=756 [2022-07-12 18:54:30,090 INFO L87 Difference]: Start difference. First operand 132 states and 149 transitions. Second operand has 18 states, 17 states have (on average 1.588235294117647) internal successors, (27), 15 states have internal predecessors, (27), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-12 18:54:31,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 18:54:31,019 INFO L93 Difference]: Finished difference Result 131 states and 148 transitions. [2022-07-12 18:54:31,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-12 18:54:31,019 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.588235294117647) internal successors, (27), 15 states have internal predecessors, (27), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 34 [2022-07-12 18:54:31,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 18:54:31,020 INFO L225 Difference]: With dead ends: 131 [2022-07-12 18:54:31,020 INFO L226 Difference]: Without dead ends: 131 [2022-07-12 18:54:31,021 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 64 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 18.5s TimeCoverageRelationStatistics Valid=123, Invalid=807, Unknown=4, NotChecked=58, Total=992 [2022-07-12 18:54:31,023 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 23 mSDsluCounter, 681 mSDsCounter, 0 mSdLazyCounter, 470 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 169 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 18:54:31,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 784 Invalid, 650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 470 Invalid, 0 Unknown, 169 Unchecked, 0.5s Time] [2022-07-12 18:54:31,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2022-07-12 18:54:31,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2022-07-12 18:54:31,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 92 states have (on average 1.5) internal successors, (138), 122 states have internal predecessors, (138), 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) [2022-07-12 18:54:31,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 148 transitions. [2022-07-12 18:54:31,029 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 148 transitions. Word has length 34 [2022-07-12 18:54:31,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 18:54:31,029 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 148 transitions. [2022-07-12 18:54:31,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.588235294117647) internal successors, (27), 15 states have internal predecessors, (27), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-12 18:54:31,030 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 148 transitions. [2022-07-12 18:54:31,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-07-12 18:54:31,030 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 18:54:31,030 INFO L195 NwaCegarLoop]: 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] [2022-07-12 18:54:31,045 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2022-07-12 18:54:31,239 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (31)] Forceful destruction successful, exit code 0 [2022-07-12 18:54:31,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3,31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2022-07-12 18:54:31,437 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_hid_set_drvdataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_hid_set_drvdataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2022-07-12 18:54:31,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 18:54:31,438 INFO L85 PathProgramCache]: Analyzing trace with hash -914695767, now seen corresponding path program 1 times [2022-07-12 18:54:31,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 18:54:31,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1101490056] [2022-07-12 18:54:31,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 18:54:31,438 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 18:54:31,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 18:54:31,439 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 18:54:31,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-07-12 18:54:31,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 18:54:31,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 60 conjunts are in the unsatisfiable core [2022-07-12 18:54:31,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 18:54:31,549 INFO L390 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 [2022-07-12 18:54:31,616 INFO L356 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-07-12 18:54:31,616 INFO L390 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 18 treesize of output 25 [2022-07-12 18:54:31,686 INFO L390 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 [2022-07-12 18:54:31,735 INFO L356 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-07-12 18:54:31,735 INFO L390 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 18 treesize of output 20 [2022-07-12 18:54:31,780 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 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 [2022-07-12 18:54:31,791 INFO L390 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 [2022-07-12 18:54:31,976 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-12 18:54:31,976 INFO L390 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 56 treesize of output 53 [2022-07-12 18:54:31,982 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-07-12 18:54:32,028 INFO L390 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 39 treesize of output 30 [2022-07-12 18:54:32,033 INFO L390 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 27 treesize of output 26 [2022-07-12 18:54:32,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 18:54:32,337 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-12 18:54:32,340 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 18:54:32,340 INFO L390 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 95 treesize of output 47 [2022-07-12 18:54:32,351 INFO L356 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-07-12 18:54:32,351 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 18 [2022-07-12 18:54:32,391 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-12 18:54:32,391 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 18:54:33,284 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_480 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (let ((.cse1 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_#t~mem57#1.base| v_ArrVal_480))) (store .cse1 |c_ULTIMATE.start_entry_point_~hdev~0#1.base| (store (select .cse1 |c_ULTIMATE.start_entry_point_~hdev~0#1.base|) (bvadd |c_ULTIMATE.start_entry_point_~hdev~0#1.offset| (_ bv8 32)) (bvadd (_ bv8 32) |c_ULTIMATE.start_entry_point_~intf~2#1.offset|)))) |c_ULTIMATE.start_entry_point_~intf~2#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_entry_point_~intf~2#1.offset|)))) (bvule (bvadd .cse0 (_ bv7 32)) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_480 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_481 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (bvadd |c_ULTIMATE.start_entry_point_~hdev~0#1.offset| (_ bv8 32))) (.cse4 (bvadd (_ bv4 32) |c_ULTIMATE.start_entry_point_~intf~2#1.offset|))) (bvule (bvadd (_ bv8 32) (select (select (let ((.cse2 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_#t~mem57#1.base| v_ArrVal_480))) (store .cse2 |c_ULTIMATE.start_entry_point_~hdev~0#1.base| (store (select .cse2 |c_ULTIMATE.start_entry_point_~hdev~0#1.base|) .cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_entry_point_~intf~2#1.offset|)))) |c_ULTIMATE.start_entry_point_~intf~2#1.base|) .cse4)) (select |c_#length| (select (select (let ((.cse5 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_#t~mem57#1.base| v_ArrVal_481))) (store .cse5 |c_ULTIMATE.start_entry_point_~hdev~0#1.base| (store (select .cse5 |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|) .cse4)))))) is different from false [2022-07-12 18:54:33,334 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_480 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_481 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (bvadd (_ bv4 32) |c_ULTIMATE.start_entry_point_~intf~2#1.offset|))) (let ((.cse1 (bvadd |c_ULTIMATE.start_entry_point_~hdev~0#1.offset| (_ bv8 32))) (.cse2 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~intf~2#1.base|) .cse3))) (bvule (bvadd (select (select (let ((.cse0 (store |c_#memory_$Pointer$.offset| .cse2 v_ArrVal_480))) (store .cse0 |c_ULTIMATE.start_entry_point_~hdev~0#1.base| (store (select .cse0 |c_ULTIMATE.start_entry_point_~hdev~0#1.base|) .cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_entry_point_~intf~2#1.offset|)))) |c_ULTIMATE.start_entry_point_~intf~2#1.base|) .cse3) (_ bv8 32)) (select |c_#length| (select (select (let ((.cse4 (store |c_#memory_$Pointer$.base| .cse2 v_ArrVal_481))) (store .cse4 |c_ULTIMATE.start_entry_point_~hdev~0#1.base| (store (select .cse4 |c_ULTIMATE.start_entry_point_~hdev~0#1.base|) .cse1 |c_ULTIMATE.start_entry_point_~intf~2#1.base|))) |c_ULTIMATE.start_entry_point_~intf~2#1.base|) .cse3)))))) (forall ((v_ArrVal_480 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (let ((.cse7 (bvadd (_ bv4 32) |c_ULTIMATE.start_entry_point_~intf~2#1.offset|))) (select (select (let ((.cse6 (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~intf~2#1.base|) .cse7) v_ArrVal_480))) (store .cse6 |c_ULTIMATE.start_entry_point_~hdev~0#1.base| (store (select .cse6 |c_ULTIMATE.start_entry_point_~hdev~0#1.base|) (bvadd |c_ULTIMATE.start_entry_point_~hdev~0#1.offset| (_ bv8 32)) (bvadd (_ bv8 32) |c_ULTIMATE.start_entry_point_~intf~2#1.offset|)))) |c_ULTIMATE.start_entry_point_~intf~2#1.base|) .cse7)))) (bvule (bvadd .cse5 (_ bv7 32)) (bvadd .cse5 (_ bv8 32)))))) is different from false [2022-07-12 18:54:33,414 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 18:54:33,414 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 93 treesize of output 84 [2022-07-12 18:54:33,425 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 18:54:33,425 INFO L390 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 64 [2022-07-12 18:54:33,446 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 18:54:33,446 INFO L390 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 776 treesize of output 766 [2022-07-12 18:54:33,495 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 18:54:33,495 INFO L390 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 8192 treesize of output 7942 [2022-07-12 18:54:33,528 INFO L390 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 9494 treesize of output 8982 [2022-07-12 18:54:33,572 INFO L390 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 10822 treesize of output 10182 [2022-07-12 18:54:33,746 INFO L390 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 6166 treesize of output 5846