./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/array-memsafety/array01-alloca-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a31fd051 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/array-memsafety/array01-alloca-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 c01598788c0e593641b4d52eb46aec8832108f2ffb3b67e30286093c8a1926f8 --- Real Ultimate output --- This is Ultimate 0.2.2-?-a31fd05 [2023-02-15 12:46:46,827 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 12:46:46,828 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 12:46:46,856 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 12:46:46,856 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 12:46:46,859 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 12:46:46,861 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 12:46:46,863 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 12:46:46,866 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 12:46:46,868 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 12:46:46,869 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 12:46:46,870 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 12:46:46,871 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 12:46:46,875 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 12:46:46,876 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 12:46:46,877 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 12:46:46,878 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 12:46:46,879 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 12:46:46,880 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 12:46:46,881 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 12:46:46,884 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 12:46:46,885 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 12:46:46,886 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 12:46:46,886 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 12:46:46,888 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 12:46:46,890 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 12:46:46,890 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 12:46:46,891 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 12:46:46,892 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 12:46:46,893 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 12:46:46,894 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 12:46:46,894 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 12:46:46,895 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 12:46:46,896 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 12:46:46,897 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 12:46:46,897 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 12:46:46,898 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 12:46:46,898 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 12:46:46,898 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 12:46:46,899 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 12:46:46,900 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 12:46:46,900 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-02-15 12:46:46,929 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 12:46:46,930 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 12:46:46,930 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 12:46:46,930 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 12:46:46,931 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 12:46:46,931 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 12:46:46,932 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 12:46:46,932 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 12:46:46,932 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 12:46:46,932 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 12:46:46,933 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-15 12:46:46,933 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-15 12:46:46,933 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 12:46:46,933 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-15 12:46:46,933 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 12:46:46,934 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-02-15 12:46:46,934 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-02-15 12:46:46,934 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-02-15 12:46:46,934 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 12:46:46,934 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-15 12:46:46,934 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-15 12:46:46,934 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 12:46:46,935 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 12:46:46,935 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 12:46:46,935 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 12:46:46,935 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 12:46:46,935 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 12:46:46,935 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 12:46:46,936 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-15 12:46:46,936 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-15 12:46:46,936 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 12:46:46,936 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 12:46:46,936 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 12:46:46,936 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 12:46:46,937 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c01598788c0e593641b4d52eb46aec8832108f2ffb3b67e30286093c8a1926f8 [2023-02-15 12:46:47,137 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 12:46:47,157 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 12:46:47,159 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 12:46:47,160 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 12:46:47,160 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 12:46:47,161 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/array01-alloca-2.i [2023-02-15 12:46:48,241 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 12:46:48,418 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 12:46:48,419 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/array01-alloca-2.i [2023-02-15 12:46:48,426 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd36e4fea/72f033b1bfcf4ee2af11b72918dcc39c/FLAG41b73f0f8 [2023-02-15 12:46:48,437 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd36e4fea/72f033b1bfcf4ee2af11b72918dcc39c [2023-02-15 12:46:48,441 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 12:46:48,442 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 12:46:48,443 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 12:46:48,444 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 12:46:48,446 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 12:46:48,446 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 12:46:48" (1/1) ... [2023-02-15 12:46:48,447 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b4221dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:46:48, skipping insertion in model container [2023-02-15 12:46:48,447 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 12:46:48" (1/1) ... [2023-02-15 12:46:48,452 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 12:46:48,476 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 12:46:48,662 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 12:46:48,672 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) [2023-02-15 12:46:48,672 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@a032cbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:46:48, skipping insertion in model container [2023-02-15 12:46:48,673 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 12:46:48,674 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-02-15 12:46:48,675 INFO L158 Benchmark]: Toolchain (without parser) took 232.63ms. Allocated memory is still 161.5MB. Free memory was 113.2MB in the beginning and 102.0MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-15 12:46:48,676 INFO L158 Benchmark]: CDTParser took 1.44ms. Allocated memory is still 161.5MB. Free memory was 129.9MB in the beginning and 129.8MB in the end (delta: 85.6kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 12:46:48,677 INFO L158 Benchmark]: CACSL2BoogieTranslator took 230.78ms. Allocated memory is still 161.5MB. Free memory was 113.2MB in the beginning and 102.0MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-15 12:46:48,678 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.44ms. Allocated memory is still 161.5MB. Free memory was 129.9MB in the beginning and 129.8MB in the end (delta: 85.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 230.78ms. Allocated memory is still 161.5MB. Free memory was 113.2MB in the beginning and 102.0MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 529]: 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/array-memsafety/array01-alloca-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 c01598788c0e593641b4d52eb46aec8832108f2ffb3b67e30286093c8a1926f8 --- Real Ultimate output --- This is Ultimate 0.2.2-?-a31fd05 [2023-02-15 12:46:50,375 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 12:46:50,376 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 12:46:50,400 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 12:46:50,402 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 12:46:50,403 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 12:46:50,408 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 12:46:50,409 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 12:46:50,410 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 12:46:50,414 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 12:46:50,415 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 12:46:50,415 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 12:46:50,417 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 12:46:50,419 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 12:46:50,420 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 12:46:50,422 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 12:46:50,431 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 12:46:50,434 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 12:46:50,435 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 12:46:50,436 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 12:46:50,437 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 12:46:50,450 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 12:46:50,451 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 12:46:50,451 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 12:46:50,453 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 12:46:50,453 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 12:46:50,454 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 12:46:50,455 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 12:46:50,456 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 12:46:50,457 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 12:46:50,457 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 12:46:50,458 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 12:46:50,459 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 12:46:50,460 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 12:46:50,461 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 12:46:50,461 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 12:46:50,462 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 12:46:50,462 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 12:46:50,462 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 12:46:50,463 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 12:46:50,463 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 12:46:50,464 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-02-15 12:46:50,489 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 12:46:50,490 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 12:46:50,490 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 12:46:50,491 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 12:46:50,491 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 12:46:50,491 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 12:46:50,492 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 12:46:50,492 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 12:46:50,493 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 12:46:50,493 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 12:46:50,493 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-15 12:46:50,493 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-15 12:46:50,494 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 12:46:50,494 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-15 12:46:50,494 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 12:46:50,494 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-02-15 12:46:50,494 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-02-15 12:46:50,494 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-02-15 12:46:50,494 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 12:46:50,495 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-15 12:46:50,495 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-02-15 12:46:50,495 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-02-15 12:46:50,495 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-15 12:46:50,495 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 12:46:50,495 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 12:46:50,495 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 12:46:50,496 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 12:46:50,496 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 12:46:50,496 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 12:46:50,496 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 12:46:50,496 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-02-15 12:46:50,496 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-02-15 12:46:50,497 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 12:46:50,497 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 12:46:50,497 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 12:46:50,497 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-02-15 12:46:50,497 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 12:46:50,497 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c01598788c0e593641b4d52eb46aec8832108f2ffb3b67e30286093c8a1926f8 [2023-02-15 12:46:50,751 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 12:46:50,768 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 12:46:50,771 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 12:46:50,772 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 12:46:50,772 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 12:46:50,773 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/array01-alloca-2.i [2023-02-15 12:46:51,909 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 12:46:52,151 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 12:46:52,151 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/array01-alloca-2.i [2023-02-15 12:46:52,158 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91bdf43a0/1cda0f31b564421083271fdf13823891/FLAG57ecd18a7 [2023-02-15 12:46:52,167 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91bdf43a0/1cda0f31b564421083271fdf13823891 [2023-02-15 12:46:52,168 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 12:46:52,169 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 12:46:52,170 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 12:46:52,170 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 12:46:52,173 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 12:46:52,173 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 12:46:52" (1/1) ... [2023-02-15 12:46:52,176 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f2c0635 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:46:52, skipping insertion in model container [2023-02-15 12:46:52,176 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 12:46:52" (1/1) ... [2023-02-15 12:46:52,181 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 12:46:52,205 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 12:46:52,387 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 12:46:52,403 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-02-15 12:46:52,410 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 12:46:52,432 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 12:46:52,441 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 12:46:52,478 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 12:46:52,506 INFO L208 MainTranslator]: Completed translation [2023-02-15 12:46:52,506 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:46:52 WrapperNode [2023-02-15 12:46:52,506 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 12:46:52,507 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 12:46:52,508 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 12:46:52,508 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 12:46:52,512 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:46:52" (1/1) ... [2023-02-15 12:46:52,537 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:46:52" (1/1) ... [2023-02-15 12:46:52,549 INFO L138 Inliner]: procedures = 117, calls = 9, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 55 [2023-02-15 12:46:52,550 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 12:46:52,550 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 12:46:52,550 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 12:46:52,550 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 12:46:52,556 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:46:52" (1/1) ... [2023-02-15 12:46:52,557 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:46:52" (1/1) ... [2023-02-15 12:46:52,559 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:46:52" (1/1) ... [2023-02-15 12:46:52,561 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:46:52" (1/1) ... [2023-02-15 12:46:52,567 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:46:52" (1/1) ... [2023-02-15 12:46:52,575 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:46:52" (1/1) ... [2023-02-15 12:46:52,578 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:46:52" (1/1) ... [2023-02-15 12:46:52,581 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:46:52" (1/1) ... [2023-02-15 12:46:52,583 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 12:46:52,587 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 12:46:52,587 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 12:46:52,587 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 12:46:52,588 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:46:52" (1/1) ... [2023-02-15 12:46:52,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 12:46:52,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 12:46:52,617 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) [2023-02-15 12:46:52,630 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 [2023-02-15 12:46:52,653 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-02-15 12:46:52,653 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-15 12:46:52,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-15 12:46:52,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-02-15 12:46:52,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 12:46:52,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 12:46:52,724 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 12:46:52,726 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 12:46:52,910 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 12:46:52,914 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 12:46:52,915 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2023-02-15 12:46:52,916 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 12:46:52 BoogieIcfgContainer [2023-02-15 12:46:52,916 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 12:46:52,918 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-15 12:46:52,918 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-15 12:46:52,920 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-15 12:46:52,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 12:46:52" (1/3) ... [2023-02-15 12:46:52,921 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4acb1190 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 12:46:52, skipping insertion in model container [2023-02-15 12:46:52,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:46:52" (2/3) ... [2023-02-15 12:46:52,921 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4acb1190 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 12:46:52, skipping insertion in model container [2023-02-15 12:46:52,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 12:46:52" (3/3) ... [2023-02-15 12:46:52,923 INFO L112 eAbstractionObserver]: Analyzing ICFG array01-alloca-2.i [2023-02-15 12:46:52,961 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-15 12:46:52,961 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2023-02-15 12:46:52,999 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-15 12:46:53,004 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=PETRI_NET, 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=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6afccb9a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-15 12:46:53,005 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-02-15 12:46:53,007 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 21 states have (on average 1.7619047619047619) internal successors, (37), 30 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:46:53,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-15 12:46:53,011 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:46:53,012 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-15 12:46:53,012 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-02-15 12:46:53,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:46:53,017 INFO L85 PathProgramCache]: Analyzing trace with hash 889508873, now seen corresponding path program 1 times [2023-02-15 12:46:53,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 12:46:53,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [232989551] [2023-02-15 12:46:53,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:46:53,027 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:46:53,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 12:46:53,035 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 12:46:53,036 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-02-15 12:46:53,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:46:53,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-15 12:46:53,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:46:53,188 INFO L350 Elim1Store]: Elim1 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 7 [2023-02-15 12:46:53,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 12:46:53,219 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 12:46:53,220 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 12:46:53,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [232989551] [2023-02-15 12:46:53,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [232989551] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 12:46:53,221 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 12:46:53,222 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-15 12:46:53,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994467334] [2023-02-15 12:46:53,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 12:46:53,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 12:46:53,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 12:46:53,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 12:46:53,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 12:46:53,253 INFO L87 Difference]: Start difference. First operand has 31 states, 21 states have (on average 1.7619047619047619) internal successors, (37), 30 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:46:53,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:46:53,305 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2023-02-15 12:46:53,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 12:46:53,308 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-02-15 12:46:53,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:46:53,313 INFO L225 Difference]: With dead ends: 30 [2023-02-15 12:46:53,313 INFO L226 Difference]: Without dead ends: 28 [2023-02-15 12:46:53,314 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 12:46:53,317 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 23 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 12:46:53,318 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 26 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 12:46:53,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-02-15 12:46:53,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2023-02-15 12:46:53,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 20 states have (on average 1.55) internal successors, (31), 27 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:46:53,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2023-02-15 12:46:53,340 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 6 [2023-02-15 12:46:53,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:46:53,340 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2023-02-15 12:46:53,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:46:53,340 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2023-02-15 12:46:53,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-15 12:46:53,341 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:46:53,341 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-15 12:46:53,360 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-02-15 12:46:53,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:46:53,548 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-02-15 12:46:53,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:46:53,549 INFO L85 PathProgramCache]: Analyzing trace with hash 889508874, now seen corresponding path program 1 times [2023-02-15 12:46:53,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 12:46:53,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [920220526] [2023-02-15 12:46:53,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:46:53,550 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:46:53,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 12:46:53,568 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 12:46:53,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-02-15 12:46:53,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:46:53,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-15 12:46:53,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:46:53,671 INFO L350 Elim1Store]: Elim1 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 [2023-02-15 12:46:53,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 12:46:53,690 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 12:46:53,690 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 12:46:53,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [920220526] [2023-02-15 12:46:53,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [920220526] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 12:46:53,691 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 12:46:53,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 12:46:53,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788394861] [2023-02-15 12:46:53,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 12:46:53,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-15 12:46:53,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 12:46:53,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-15 12:46:53,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-15 12:46:53,693 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:46:53,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:46:53,792 INFO L93 Difference]: Finished difference Result 57 states and 62 transitions. [2023-02-15 12:46:53,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-15 12:46:53,793 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-02-15 12:46:53,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:46:53,793 INFO L225 Difference]: With dead ends: 57 [2023-02-15 12:46:53,794 INFO L226 Difference]: Without dead ends: 57 [2023-02-15 12:46:53,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-15 12:46:53,795 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 33 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 12:46:53,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 102 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 12:46:53,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2023-02-15 12:46:53,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 31. [2023-02-15 12:46:53,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 30 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:46:53,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2023-02-15 12:46:53,809 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 6 [2023-02-15 12:46:53,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:46:53,809 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2023-02-15 12:46:53,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:46:53,810 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2023-02-15 12:46:53,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-15 12:46:53,811 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:46:53,811 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-15 12:46:53,833 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-02-15 12:46:54,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:46:54,018 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-02-15 12:46:54,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:46:54,018 INFO L85 PathProgramCache]: Analyzing trace with hash 889568456, now seen corresponding path program 1 times [2023-02-15 12:46:54,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 12:46:54,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [734660381] [2023-02-15 12:46:54,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:46:54,019 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:46:54,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 12:46:54,020 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 12:46:54,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-02-15 12:46:54,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:46:54,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-15 12:46:54,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:46:54,118 INFO L350 Elim1Store]: Elim1 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 8 treesize of output 7 [2023-02-15 12:46:54,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 12:46:54,161 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 12:46:54,162 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 12:46:54,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [734660381] [2023-02-15 12:46:54,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [734660381] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 12:46:54,163 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 12:46:54,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 12:46:54,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178491210] [2023-02-15 12:46:54,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 12:46:54,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-15 12:46:54,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 12:46:54,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-15 12:46:54,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-15 12:46:54,165 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:46:54,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:46:54,247 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2023-02-15 12:46:54,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-15 12:46:54,248 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-02-15 12:46:54,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:46:54,249 INFO L225 Difference]: With dead ends: 35 [2023-02-15 12:46:54,249 INFO L226 Difference]: Without dead ends: 35 [2023-02-15 12:46:54,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-15 12:46:54,250 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 33 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 12:46:54,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 43 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 12:46:54,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-02-15 12:46:54,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 30. [2023-02-15 12:46:54,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 22 states have (on average 1.5) internal successors, (33), 29 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:46:54,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2023-02-15 12:46:54,253 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 6 [2023-02-15 12:46:54,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:46:54,253 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2023-02-15 12:46:54,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:46:54,253 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2023-02-15 12:46:54,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-02-15 12:46:54,253 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:46:54,253 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:46:54,263 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-02-15 12:46:54,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:46:54,464 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-02-15 12:46:54,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:46:54,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1091210163, now seen corresponding path program 1 times [2023-02-15 12:46:54,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 12:46:54,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2117646543] [2023-02-15 12:46:54,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:46:54,465 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:46:54,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 12:46:54,470 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 12:46:54,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-02-15 12:46:54,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:46:54,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-15 12:46:54,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:46:54,576 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 12:46:54,577 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 12:46:54,632 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 12:46:54,633 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 12:46:54,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2117646543] [2023-02-15 12:46:54,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2117646543] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 12:46:54,636 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 12:46:54,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-02-15 12:46:54,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380117593] [2023-02-15 12:46:54,636 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 12:46:54,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-15 12:46:54,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 12:46:54,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-15 12:46:54,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-02-15 12:46:54,638 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:46:54,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:46:54,695 INFO L93 Difference]: Finished difference Result 55 states and 59 transitions. [2023-02-15 12:46:54,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 12:46:54,696 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-02-15 12:46:54,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:46:54,697 INFO L225 Difference]: With dead ends: 55 [2023-02-15 12:46:54,697 INFO L226 Difference]: Without dead ends: 55 [2023-02-15 12:46:54,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-02-15 12:46:54,698 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 104 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 12:46:54,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 115 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 12:46:54,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2023-02-15 12:46:54,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 36. [2023-02-15 12:46:54,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 35 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:46:54,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2023-02-15 12:46:54,702 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 10 [2023-02-15 12:46:54,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:46:54,703 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2023-02-15 12:46:54,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:46:54,703 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2023-02-15 12:46:54,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-02-15 12:46:54,703 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:46:54,704 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:46:54,710 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-02-15 12:46:54,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:46:54,910 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-02-15 12:46:54,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:46:54,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1900556789, now seen corresponding path program 1 times [2023-02-15 12:46:54,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 12:46:54,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1533044328] [2023-02-15 12:46:54,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:46:54,912 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:46:54,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 12:46:54,913 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 12:46:54,918 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-02-15 12:46:55,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:46:55,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 11 conjunts are in the unsatisfiable core [2023-02-15 12:46:55,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:46:55,023 INFO L350 Elim1Store]: Elim1 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 8 treesize of output 7 [2023-02-15 12:46:55,167 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 12:46:55,167 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 12:46:55,430 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 12:46:55,430 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 12:46:55,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1533044328] [2023-02-15 12:46:55,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1533044328] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 12:46:55,430 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 12:46:55,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-02-15 12:46:55,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601708436] [2023-02-15 12:46:55,430 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 12:46:55,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-02-15 12:46:55,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 12:46:55,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-02-15 12:46:55,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-02-15 12:46:55,431 INFO L87 Difference]: Start difference. First operand 36 states and 39 transitions. Second operand has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:46:56,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:46:56,079 INFO L93 Difference]: Finished difference Result 86 states and 94 transitions. [2023-02-15 12:46:56,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-15 12:46:56,080 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-02-15 12:46:56,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:46:56,081 INFO L225 Difference]: With dead ends: 86 [2023-02-15 12:46:56,081 INFO L226 Difference]: Without dead ends: 86 [2023-02-15 12:46:56,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=78, Invalid=132, Unknown=0, NotChecked=0, Total=210 [2023-02-15 12:46:56,082 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 205 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-15 12:46:56,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 70 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-15 12:46:56,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2023-02-15 12:46:56,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 48. [2023-02-15 12:46:56,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 40 states have (on average 1.35) internal successors, (54), 47 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:46:56,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 54 transitions. [2023-02-15 12:46:56,088 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 54 transitions. Word has length 10 [2023-02-15 12:46:56,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:46:56,088 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 54 transitions. [2023-02-15 12:46:56,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:46:56,088 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 54 transitions. [2023-02-15 12:46:56,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-02-15 12:46:56,089 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:46:56,089 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:46:56,096 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-02-15 12:46:56,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:46:56,296 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-02-15 12:46:56,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:46:56,296 INFO L85 PathProgramCache]: Analyzing trace with hash -680998148, now seen corresponding path program 1 times [2023-02-15 12:46:56,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 12:46:56,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1718784348] [2023-02-15 12:46:56,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:46:56,299 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:46:56,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 12:46:56,300 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 12:46:56,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-02-15 12:46:56,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:46:56,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-15 12:46:56,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:46:56,380 INFO L350 Elim1Store]: Elim1 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 7 [2023-02-15 12:46:56,402 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 12:46:56,402 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 12:46:56,402 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 12:46:56,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1718784348] [2023-02-15 12:46:56,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1718784348] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 12:46:56,403 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 12:46:56,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 12:46:56,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588852833] [2023-02-15 12:46:56,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 12:46:56,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-15 12:46:56,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 12:46:56,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-15 12:46:56,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-15 12:46:56,405 INFO L87 Difference]: Start difference. First operand 48 states and 54 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:46:56,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:46:56,447 INFO L93 Difference]: Finished difference Result 45 states and 51 transitions. [2023-02-15 12:46:56,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-15 12:46:56,448 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-02-15 12:46:56,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:46:56,449 INFO L225 Difference]: With dead ends: 45 [2023-02-15 12:46:56,449 INFO L226 Difference]: Without dead ends: 45 [2023-02-15 12:46:56,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-15 12:46:56,450 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 29 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 12:46:56,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 26 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 12:46:56,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2023-02-15 12:46:56,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2023-02-15 12:46:56,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 40 states have (on average 1.275) internal successors, (51), 44 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:46:56,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2023-02-15 12:46:56,455 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 12 [2023-02-15 12:46:56,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:46:56,455 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2023-02-15 12:46:56,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:46:56,455 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2023-02-15 12:46:56,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-02-15 12:46:56,456 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:46:56,456 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:46:56,465 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-02-15 12:46:56,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:46:56,661 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-02-15 12:46:56,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:46:56,662 INFO L85 PathProgramCache]: Analyzing trace with hash -680998147, now seen corresponding path program 1 times [2023-02-15 12:46:56,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 12:46:56,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1861331553] [2023-02-15 12:46:56,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:46:56,662 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:46:56,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 12:46:56,663 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 12:46:56,666 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-02-15 12:46:56,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:46:56,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 12 conjunts are in the unsatisfiable core [2023-02-15 12:46:56,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:46:56,750 INFO L350 Elim1Store]: Elim1 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 [2023-02-15 12:46:56,804 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 12:46:56,805 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 12:46:56,805 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 12:46:56,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1861331553] [2023-02-15 12:46:56,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1861331553] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 12:46:56,805 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 12:46:56,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 12:46:56,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082146669] [2023-02-15 12:46:56,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 12:46:56,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 12:46:56,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 12:46:56,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 12:46:56,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-15 12:46:56,807 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:46:57,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:46:57,019 INFO L93 Difference]: Finished difference Result 73 states and 81 transitions. [2023-02-15 12:46:57,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-15 12:46:57,020 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-02-15 12:46:57,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:46:57,020 INFO L225 Difference]: With dead ends: 73 [2023-02-15 12:46:57,020 INFO L226 Difference]: Without dead ends: 73 [2023-02-15 12:46:57,021 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-02-15 12:46:57,021 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 77 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 12:46:57,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 75 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 12:46:57,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2023-02-15 12:46:57,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 53. [2023-02-15 12:46:57,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 48 states have (on average 1.2708333333333333) internal successors, (61), 52 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:46:57,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 61 transitions. [2023-02-15 12:46:57,024 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 61 transitions. Word has length 12 [2023-02-15 12:46:57,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:46:57,024 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 61 transitions. [2023-02-15 12:46:57,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:46:57,024 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 61 transitions. [2023-02-15 12:46:57,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-02-15 12:46:57,025 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:46:57,025 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:46:57,035 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2023-02-15 12:46:57,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:46:57,232 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-02-15 12:46:57,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:46:57,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1074025157, now seen corresponding path program 1 times [2023-02-15 12:46:57,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 12:46:57,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1667894914] [2023-02-15 12:46:57,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:46:57,232 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:46:57,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 12:46:57,233 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 12:46:57,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-02-15 12:46:57,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:46:57,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 14 conjunts are in the unsatisfiable core [2023-02-15 12:46:57,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:46:57,313 INFO L350 Elim1Store]: Elim1 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 8 treesize of output 7 [2023-02-15 12:46:57,577 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 12:46:57,577 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 12:46:57,744 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 12:46:57,745 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 12:46:57,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1667894914] [2023-02-15 12:46:57,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1667894914] provided 1 perfect and 1 imperfect interpolant sequences [2023-02-15 12:46:57,745 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-15 12:46:57,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2023-02-15 12:46:57,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449145763] [2023-02-15 12:46:57,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 12:46:57,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 12:46:57,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 12:46:57,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 12:46:57,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-02-15 12:46:57,746 INFO L87 Difference]: Start difference. First operand 53 states and 61 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:46:57,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:46:57,863 INFO L93 Difference]: Finished difference Result 57 states and 65 transitions. [2023-02-15 12:46:57,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-15 12:46:57,864 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-02-15 12:46:57,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:46:57,864 INFO L225 Difference]: With dead ends: 57 [2023-02-15 12:46:57,864 INFO L226 Difference]: Without dead ends: 57 [2023-02-15 12:46:57,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-02-15 12:46:57,865 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 34 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 12:46:57,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 33 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 12:46:57,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2023-02-15 12:46:57,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 45. [2023-02-15 12:46:57,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 42 states have (on average 1.2380952380952381) internal successors, (52), 44 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:46:57,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 52 transitions. [2023-02-15 12:46:57,867 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 52 transitions. Word has length 12 [2023-02-15 12:46:57,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:46:57,867 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 52 transitions. [2023-02-15 12:46:57,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:46:57,868 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2023-02-15 12:46:57,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-02-15 12:46:57,868 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:46:57,868 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:46:57,876 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-02-15 12:46:58,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:46:58,069 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-02-15 12:46:58,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:46:58,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1604227594, now seen corresponding path program 1 times [2023-02-15 12:46:58,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 12:46:58,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [651818443] [2023-02-15 12:46:58,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:46:58,070 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:46:58,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 12:46:58,071 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 12:46:58,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-02-15 12:46:58,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:46:58,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-15 12:46:58,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:46:58,122 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 12:46:58,122 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 12:46:58,122 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 12:46:58,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [651818443] [2023-02-15 12:46:58,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [651818443] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 12:46:58,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 12:46:58,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 12:46:58,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402728702] [2023-02-15 12:46:58,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 12:46:58,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-15 12:46:58,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 12:46:58,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-15 12:46:58,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-15 12:46:58,124 INFO L87 Difference]: Start difference. First operand 45 states and 52 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:46:58,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:46:58,170 INFO L93 Difference]: Finished difference Result 68 states and 77 transitions. [2023-02-15 12:46:58,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-15 12:46:58,170 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-02-15 12:46:58,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:46:58,171 INFO L225 Difference]: With dead ends: 68 [2023-02-15 12:46:58,171 INFO L226 Difference]: Without dead ends: 68 [2023-02-15 12:46:58,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-15 12:46:58,171 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 32 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 12:46:58,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 62 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 12:46:58,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2023-02-15 12:46:58,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 47. [2023-02-15 12:46:58,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 44 states have (on average 1.2272727272727273) internal successors, (54), 46 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:46:58,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 54 transitions. [2023-02-15 12:46:58,175 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 54 transitions. Word has length 14 [2023-02-15 12:46:58,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:46:58,175 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 54 transitions. [2023-02-15 12:46:58,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:46:58,175 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 54 transitions. [2023-02-15 12:46:58,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-02-15 12:46:58,176 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:46:58,176 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:46:58,185 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2023-02-15 12:46:58,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:46:58,386 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-02-15 12:46:58,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:46:58,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1346062156, now seen corresponding path program 1 times [2023-02-15 12:46:58,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 12:46:58,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [705944124] [2023-02-15 12:46:58,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:46:58,387 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:46:58,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 12:46:58,392 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 12:46:58,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-02-15 12:46:58,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:46:58,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-15 12:46:58,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:46:58,513 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 12:46:58,513 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 12:46:58,576 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 12:46:58,577 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 12:46:58,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [705944124] [2023-02-15 12:46:58,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [705944124] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 12:46:58,577 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 12:46:58,577 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2023-02-15 12:46:58,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725086316] [2023-02-15 12:46:58,577 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 12:46:58,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-02-15 12:46:58,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 12:46:58,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-15 12:46:58,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2023-02-15 12:46:58,581 INFO L87 Difference]: Start difference. First operand 47 states and 54 transitions. Second operand has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:46:58,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:46:58,764 INFO L93 Difference]: Finished difference Result 70 states and 78 transitions. [2023-02-15 12:46:58,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-15 12:46:58,764 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-02-15 12:46:58,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:46:58,765 INFO L225 Difference]: With dead ends: 70 [2023-02-15 12:46:58,765 INFO L226 Difference]: Without dead ends: 70 [2023-02-15 12:46:58,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2023-02-15 12:46:58,765 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 203 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 12:46:58,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 60 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 12:46:58,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2023-02-15 12:46:58,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 45. [2023-02-15 12:46:58,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 42 states have (on average 1.2142857142857142) internal successors, (51), 44 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:46:58,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2023-02-15 12:46:58,768 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 14 [2023-02-15 12:46:58,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:46:58,768 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2023-02-15 12:46:58,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:46:58,768 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2023-02-15 12:46:58,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-15 12:46:58,769 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:46:58,769 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:46:58,789 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-02-15 12:46:58,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:46:58,976 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-02-15 12:46:58,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:46:58,976 INFO L85 PathProgramCache]: Analyzing trace with hash 265956368, now seen corresponding path program 1 times [2023-02-15 12:46:58,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 12:46:58,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [293674523] [2023-02-15 12:46:58,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:46:58,977 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:46:58,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 12:46:58,978 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 12:46:58,978 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-02-15 12:46:59,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:46:59,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-15 12:46:59,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:46:59,061 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 12:46:59,062 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 12:46:59,113 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 12:46:59,114 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 12:46:59,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [293674523] [2023-02-15 12:46:59,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [293674523] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 12:46:59,114 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 12:46:59,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-02-15 12:46:59,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633424722] [2023-02-15 12:46:59,114 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 12:46:59,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-15 12:46:59,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 12:46:59,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-15 12:46:59,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-02-15 12:46:59,115 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:46:59,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:46:59,190 INFO L93 Difference]: Finished difference Result 59 states and 65 transitions. [2023-02-15 12:46:59,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 12:46:59,190 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-02-15 12:46:59,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:46:59,191 INFO L225 Difference]: With dead ends: 59 [2023-02-15 12:46:59,191 INFO L226 Difference]: Without dead ends: 59 [2023-02-15 12:46:59,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-02-15 12:46:59,191 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 26 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 12:46:59,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 111 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 12:46:59,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-02-15 12:46:59,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 55. [2023-02-15 12:46:59,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 52 states have (on average 1.1923076923076923) internal successors, (62), 54 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:46:59,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 62 transitions. [2023-02-15 12:46:59,194 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 62 transitions. Word has length 16 [2023-02-15 12:46:59,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:46:59,194 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 62 transitions. [2023-02-15 12:46:59,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:46:59,194 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 62 transitions. [2023-02-15 12:46:59,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-15 12:46:59,195 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:46:59,195 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:46:59,204 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-02-15 12:46:59,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:46:59,402 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-02-15 12:46:59,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:46:59,402 INFO L85 PathProgramCache]: Analyzing trace with hash -745160882, now seen corresponding path program 1 times [2023-02-15 12:46:59,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 12:46:59,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [585434330] [2023-02-15 12:46:59,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:46:59,403 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:46:59,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 12:46:59,404 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 12:46:59,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-02-15 12:46:59,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:46:59,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 17 conjunts are in the unsatisfiable core [2023-02-15 12:46:59,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:46:59,467 INFO L350 Elim1Store]: Elim1 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 8 treesize of output 7 [2023-02-15 12:46:59,622 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 12:46:59,622 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 12:46:59,945 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 12:46:59,945 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 12:46:59,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [585434330] [2023-02-15 12:46:59,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [585434330] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 12:46:59,945 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 12:46:59,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-02-15 12:46:59,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515786860] [2023-02-15 12:46:59,946 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 12:46:59,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-15 12:46:59,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 12:46:59,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-15 12:46:59,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2023-02-15 12:46:59,946 INFO L87 Difference]: Start difference. First operand 55 states and 62 transitions. Second operand has 12 states, 11 states have (on average 2.727272727272727) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:47:00,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:47:00,587 INFO L93 Difference]: Finished difference Result 90 states and 101 transitions. [2023-02-15 12:47:00,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-15 12:47:00,588 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.727272727272727) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-02-15 12:47:00,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:47:00,588 INFO L225 Difference]: With dead ends: 90 [2023-02-15 12:47:00,588 INFO L226 Difference]: Without dead ends: 90 [2023-02-15 12:47:00,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2023-02-15 12:47:00,589 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 184 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 12:47:00,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 62 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 12:47:00,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2023-02-15 12:47:00,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 79. [2023-02-15 12:47:00,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 76 states have (on average 1.2105263157894737) internal successors, (92), 78 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:47:00,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 92 transitions. [2023-02-15 12:47:00,592 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 92 transitions. Word has length 16 [2023-02-15 12:47:00,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:47:00,592 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 92 transitions. [2023-02-15 12:47:00,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.727272727272727) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:47:00,592 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 92 transitions. [2023-02-15 12:47:00,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-15 12:47:00,593 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:47:00,593 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:47:00,608 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-02-15 12:47:00,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:47:00,809 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-02-15 12:47:00,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:47:00,809 INFO L85 PathProgramCache]: Analyzing trace with hash -2114005431, now seen corresponding path program 1 times [2023-02-15 12:47:00,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 12:47:00,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1717778049] [2023-02-15 12:47:00,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:47:00,810 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:47:00,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 12:47:00,811 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 12:47:00,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-02-15 12:47:00,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:47:00,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-15 12:47:00,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:47:00,980 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_#t~malloc8#1.base_11| (_ BitVec 32))) (and (= (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_#t~malloc8#1.base_11| (_ bv0 1)) |c_#valid|) (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_#t~malloc8#1.base_11|) (_ bv0 1)))) is different from true [2023-02-15 12:47:00,981 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-15 12:47:00,981 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 12:47:00,981 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 12:47:00,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1717778049] [2023-02-15 12:47:00,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1717778049] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 12:47:00,981 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 12:47:00,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 12:47:00,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574131332] [2023-02-15 12:47:00,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 12:47:00,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 12:47:00,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 12:47:00,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 12:47:00,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=8, Unknown=1, NotChecked=4, Total=20 [2023-02-15 12:47:00,983 INFO L87 Difference]: Start difference. First operand 79 states and 92 transitions. Second operand has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:47:01,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:47:01,029 INFO L93 Difference]: Finished difference Result 78 states and 91 transitions. [2023-02-15 12:47:01,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-15 12:47:01,029 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-02-15 12:47:01,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:47:01,029 INFO L225 Difference]: With dead ends: 78 [2023-02-15 12:47:01,029 INFO L226 Difference]: Without dead ends: 59 [2023-02-15 12:47:01,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=13, Unknown=1, NotChecked=6, Total=30 [2023-02-15 12:47:01,030 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 8 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 24 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 12:47:01,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 36 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 24 Unchecked, 0.0s Time] [2023-02-15 12:47:01,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-02-15 12:47:01,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2023-02-15 12:47:01,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 57 states have (on average 1.1754385964912282) internal successors, (67), 58 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:47:01,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 67 transitions. [2023-02-15 12:47:01,032 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 67 transitions. Word has length 18 [2023-02-15 12:47:01,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:47:01,032 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 67 transitions. [2023-02-15 12:47:01,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:47:01,032 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 67 transitions. [2023-02-15 12:47:01,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-02-15 12:47:01,032 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:47:01,033 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1] [2023-02-15 12:47:01,045 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-02-15 12:47:01,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:47:01,240 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-02-15 12:47:01,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:47:01,241 INFO L85 PathProgramCache]: Analyzing trace with hash 302966996, now seen corresponding path program 2 times [2023-02-15 12:47:01,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 12:47:01,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1919877384] [2023-02-15 12:47:01,241 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 12:47:01,241 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:47:01,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 12:47:01,245 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 12:47:01,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-02-15 12:47:01,320 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 12:47:01,320 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 12:47:01,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 14 conjunts are in the unsatisfiable core [2023-02-15 12:47:01,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:47:01,334 INFO L350 Elim1Store]: Elim1 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 8 treesize of output 7 [2023-02-15 12:47:01,674 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 12:47:01,674 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 12:47:02,538 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 12:47:02,538 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 12:47:02,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1919877384] [2023-02-15 12:47:02,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1919877384] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 12:47:02,538 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 12:47:02,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2023-02-15 12:47:02,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87074143] [2023-02-15 12:47:02,538 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 12:47:02,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-02-15 12:47:02,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 12:47:02,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-02-15 12:47:02,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2023-02-15 12:47:02,539 INFO L87 Difference]: Start difference. First operand 59 states and 67 transitions. Second operand has 18 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 18 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:47:04,653 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-15 12:47:06,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:47:06,494 INFO L93 Difference]: Finished difference Result 371 states and 417 transitions. [2023-02-15 12:47:06,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-02-15 12:47:06,495 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 18 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2023-02-15 12:47:06,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:47:06,496 INFO L225 Difference]: With dead ends: 371 [2023-02-15 12:47:06,496 INFO L226 Difference]: Without dead ends: 371 [2023-02-15 12:47:06,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=327, Invalid=665, Unknown=0, NotChecked=0, Total=992 [2023-02-15 12:47:06,497 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 455 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-02-15 12:47:06,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [455 Valid, 248 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-02-15 12:47:06,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2023-02-15 12:47:06,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 83. [2023-02-15 12:47:06,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 81 states have (on average 1.1975308641975309) internal successors, (97), 82 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:47:06,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 97 transitions. [2023-02-15 12:47:06,501 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 97 transitions. Word has length 22 [2023-02-15 12:47:06,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:47:06,501 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 97 transitions. [2023-02-15 12:47:06,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 18 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:47:06,501 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 97 transitions. [2023-02-15 12:47:06,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-15 12:47:06,502 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:47:06,502 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:47:06,512 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-02-15 12:47:06,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:47:06,709 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-02-15 12:47:06,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:47:06,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1708692345, now seen corresponding path program 2 times [2023-02-15 12:47:06,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 12:47:06,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2051178602] [2023-02-15 12:47:06,710 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 12:47:06,710 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:47:06,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 12:47:06,711 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 12:47:06,714 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-02-15 12:47:06,765 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 12:47:06,765 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 12:47:06,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 20 conjunts are in the unsatisfiable core [2023-02-15 12:47:06,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:47:06,779 INFO L350 Elim1Store]: Elim1 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 8 treesize of output 7 [2023-02-15 12:47:07,069 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 14 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 12:47:07,069 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 12:47:08,282 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 12:47:08,282 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 12:47:08,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2051178602] [2023-02-15 12:47:08,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2051178602] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 12:47:08,283 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 12:47:08,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 20 [2023-02-15 12:47:08,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019288764] [2023-02-15 12:47:08,283 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 12:47:08,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-02-15 12:47:08,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 12:47:08,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-02-15 12:47:08,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2023-02-15 12:47:08,284 INFO L87 Difference]: Start difference. First operand 83 states and 97 transitions. Second operand has 20 states, 20 states have (on average 2.7) internal successors, (54), 20 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:47:11,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:47:11,306 INFO L93 Difference]: Finished difference Result 148 states and 167 transitions. [2023-02-15 12:47:11,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-02-15 12:47:11,307 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.7) internal successors, (54), 20 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2023-02-15 12:47:11,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:47:11,308 INFO L225 Difference]: With dead ends: 148 [2023-02-15 12:47:11,308 INFO L226 Difference]: Without dead ends: 136 [2023-02-15 12:47:11,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=295, Invalid=1037, Unknown=0, NotChecked=0, Total=1332 [2023-02-15 12:47:11,310 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 355 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-02-15 12:47:11,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 174 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-02-15 12:47:11,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2023-02-15 12:47:11,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 92. [2023-02-15 12:47:11,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 90 states have (on average 1.1777777777777778) internal successors, (106), 91 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:47:11,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 106 transitions. [2023-02-15 12:47:11,319 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 106 transitions. Word has length 28 [2023-02-15 12:47:11,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:47:11,320 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 106 transitions. [2023-02-15 12:47:11,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.7) internal successors, (54), 20 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:47:11,320 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 106 transitions. [2023-02-15 12:47:11,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-02-15 12:47:11,326 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:47:11,326 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:47:11,337 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-02-15 12:47:11,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:47:11,534 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-02-15 12:47:11,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:47:11,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1233071133, now seen corresponding path program 3 times [2023-02-15 12:47:11,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 12:47:11,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [630944505] [2023-02-15 12:47:11,535 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-15 12:47:11,535 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:47:11,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 12:47:11,536 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 12:47:11,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-02-15 12:47:11,653 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-02-15 12:47:11,654 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 12:47:11,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 24 conjunts are in the unsatisfiable core [2023-02-15 12:47:11,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:47:11,671 INFO L350 Elim1Store]: Elim1 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 8 treesize of output 7 [2023-02-15 12:47:12,625 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 34 proven. 14 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-02-15 12:47:12,625 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 12:47:25,898 WARN L233 SmtUtils]: Spent 6.23s on a formula simplification that was a NOOP. DAG size: 38 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-15 12:47:32,718 WARN L233 SmtUtils]: Spent 6.22s on a formula simplification that was a NOOP. DAG size: 38 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-15 12:47:39,678 WARN L233 SmtUtils]: Spent 6.08s on a formula simplification that was a NOOP. DAG size: 27 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-15 12:47:39,685 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-02-15 12:47:39,685 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 12:47:39,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [630944505] [2023-02-15 12:47:39,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [630944505] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 12:47:39,685 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 12:47:39,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2023-02-15 12:47:39,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372285264] [2023-02-15 12:47:39,685 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 12:47:39,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-02-15 12:47:39,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 12:47:39,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-02-15 12:47:39,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=544, Unknown=2, NotChecked=0, Total=650 [2023-02-15 12:47:39,686 INFO L87 Difference]: Start difference. First operand 92 states and 106 transitions. Second operand has 26 states, 25 states have (on average 2.4) internal successors, (60), 26 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:47:43,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:47:43,648 INFO L93 Difference]: Finished difference Result 116 states and 131 transitions. [2023-02-15 12:47:43,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-02-15 12:47:43,651 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.4) internal successors, (60), 26 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2023-02-15 12:47:43,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:47:43,651 INFO L225 Difference]: With dead ends: 116 [2023-02-15 12:47:43,651 INFO L226 Difference]: Without dead ends: 97 [2023-02-15 12:47:43,652 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 27.3s TimeCoverageRelationStatistics Valid=203, Invalid=851, Unknown=2, NotChecked=0, Total=1056 [2023-02-15 12:47:43,652 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 159 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-02-15 12:47:43,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 146 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-02-15 12:47:43,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2023-02-15 12:47:43,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 92. [2023-02-15 12:47:43,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 90 states have (on average 1.1666666666666667) internal successors, (105), 91 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:47:43,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 105 transitions. [2023-02-15 12:47:43,654 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 105 transitions. Word has length 36 [2023-02-15 12:47:43,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:47:43,654 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 105 transitions. [2023-02-15 12:47:43,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.4) internal successors, (60), 26 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:47:43,654 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 105 transitions. [2023-02-15 12:47:43,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-02-15 12:47:43,654 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:47:43,655 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:47:43,682 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Ended with exit code 0 [2023-02-15 12:47:43,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:47:43,873 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-02-15 12:47:43,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:47:43,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1584580368, now seen corresponding path program 4 times [2023-02-15 12:47:43,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 12:47:43,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1073064196] [2023-02-15 12:47:43,874 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-15 12:47:43,874 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:47:43,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 12:47:43,875 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 12:47:43,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-02-15 12:47:43,994 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-15 12:47:43,994 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 12:47:43,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 20 conjunts are in the unsatisfiable core [2023-02-15 12:47:44,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:47:44,043 INFO L350 Elim1Store]: Elim1 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 8 treesize of output 7 [2023-02-15 12:47:45,354 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-02-15 12:47:45,355 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 12:47:48,160 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-02-15 12:47:48,161 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 12:47:48,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1073064196] [2023-02-15 12:47:48,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1073064196] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 12:47:48,161 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 12:47:48,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2023-02-15 12:47:48,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310422716] [2023-02-15 12:47:48,161 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 12:47:48,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-02-15 12:47:48,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 12:47:48,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-02-15 12:47:48,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2023-02-15 12:47:48,162 INFO L87 Difference]: Start difference. First operand 92 states and 105 transitions. Second operand has 20 states, 19 states have (on average 2.8421052631578947) internal successors, (54), 20 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:47:54,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:47:54,746 INFO L93 Difference]: Finished difference Result 171 states and 193 transitions. [2023-02-15 12:47:54,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-02-15 12:47:54,748 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.8421052631578947) internal successors, (54), 20 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2023-02-15 12:47:54,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:47:54,748 INFO L225 Difference]: With dead ends: 171 [2023-02-15 12:47:54,749 INFO L226 Difference]: Without dead ends: 171 [2023-02-15 12:47:54,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=435, Invalid=1125, Unknown=0, NotChecked=0, Total=1560 [2023-02-15 12:47:54,749 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 549 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 549 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-02-15 12:47:54,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [549 Valid, 181 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-02-15 12:47:54,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2023-02-15 12:47:54,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 131. [2023-02-15 12:47:54,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 129 states have (on average 1.1550387596899225) internal successors, (149), 130 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:47:54,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 149 transitions. [2023-02-15 12:47:54,752 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 149 transitions. Word has length 40 [2023-02-15 12:47:54,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:47:54,752 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 149 transitions. [2023-02-15 12:47:54,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.8421052631578947) internal successors, (54), 20 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:47:54,752 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 149 transitions. [2023-02-15 12:47:54,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-02-15 12:47:54,752 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:47:54,752 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 1, 1, 1, 1, 1] [2023-02-15 12:47:54,760 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Ended with exit code 0 [2023-02-15 12:47:54,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:47:54,953 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-02-15 12:47:54,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:47:54,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1048882662, now seen corresponding path program 3 times [2023-02-15 12:47:54,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 12:47:54,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [366558208] [2023-02-15 12:47:54,954 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-15 12:47:54,954 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:47:54,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 12:47:54,955 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 12:47:54,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-02-15 12:47:55,104 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2023-02-15 12:47:55,104 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 12:47:55,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 20 conjunts are in the unsatisfiable core [2023-02-15 12:47:55,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:47:55,147 INFO L350 Elim1Store]: Elim1 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 8 treesize of output 7 [2023-02-15 12:47:57,000 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 12:47:57,000 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 12:48:01,561 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 12:48:01,561 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 12:48:01,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [366558208] [2023-02-15 12:48:01,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [366558208] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 12:48:01,562 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 12:48:01,562 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 29 [2023-02-15 12:48:01,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980459130] [2023-02-15 12:48:01,562 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 12:48:01,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-02-15 12:48:01,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 12:48:01,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-02-15 12:48:01,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=638, Unknown=0, NotChecked=0, Total=870 [2023-02-15 12:48:01,563 INFO L87 Difference]: Start difference. First operand 131 states and 149 transitions. Second operand has 30 states, 29 states have (on average 3.103448275862069) internal successors, (90), 30 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:48:12,703 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-15 12:48:37,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:48:37,105 INFO L93 Difference]: Finished difference Result 1691 states and 1901 transitions. [2023-02-15 12:48:37,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-02-15 12:48:37,107 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 3.103448275862069) internal successors, (90), 30 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2023-02-15 12:48:37,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:48:37,110 INFO L225 Difference]: With dead ends: 1691 [2023-02-15 12:48:37,110 INFO L226 Difference]: Without dead ends: 1691 [2023-02-15 12:48:37,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 932 ImplicationChecksByTransitivity, 30.7s TimeCoverageRelationStatistics Valid=1194, Invalid=2588, Unknown=0, NotChecked=0, Total=3782 [2023-02-15 12:48:37,112 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 1779 mSDsluCounter, 845 mSDsCounter, 0 mSdLazyCounter, 1262 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1779 SdHoareTripleChecker+Valid, 908 SdHoareTripleChecker+Invalid, 1278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1262 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2023-02-15 12:48:37,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1779 Valid, 908 Invalid, 1278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1262 Invalid, 1 Unknown, 0 Unchecked, 8.4s Time] [2023-02-15 12:48:37,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1691 states. [2023-02-15 12:48:37,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1691 to 179. [2023-02-15 12:48:37,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 177 states have (on average 1.1807909604519775) internal successors, (209), 178 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:48:37,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 209 transitions. [2023-02-15 12:48:37,119 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 209 transitions. Word has length 46 [2023-02-15 12:48:37,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:48:37,119 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 209 transitions. [2023-02-15 12:48:37,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 3.103448275862069) internal successors, (90), 30 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:48:37,119 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 209 transitions. [2023-02-15 12:48:37,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-02-15 12:48:37,120 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:48:37,120 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:48:37,142 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2023-02-15 12:48:37,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:48:37,321 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-02-15 12:48:37,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:48:37,321 INFO L85 PathProgramCache]: Analyzing trace with hash -311505665, now seen corresponding path program 5 times [2023-02-15 12:48:37,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 12:48:37,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1326483576] [2023-02-15 12:48:37,322 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-15 12:48:37,322 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:48:37,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 12:48:37,323 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 12:48:37,326 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-02-15 12:48:37,510 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2023-02-15 12:48:37,510 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 12:48:37,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 31 conjunts are in the unsatisfiable core [2023-02-15 12:48:37,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:48:37,542 INFO L350 Elim1Store]: Elim1 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 8 treesize of output 7 [2023-02-15 12:48:39,927 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 90 proven. 113 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-02-15 12:48:39,928 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 12:48:47,883 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 0 proven. 215 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 12:48:47,883 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 12:48:47,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1326483576] [2023-02-15 12:48:47,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1326483576] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 12:48:47,883 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 12:48:47,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 19] total 35 [2023-02-15 12:48:47,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008932577] [2023-02-15 12:48:47,883 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 12:48:47,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-02-15 12:48:47,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 12:48:47,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-02-15 12:48:47,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=1018, Unknown=0, NotChecked=0, Total=1190 [2023-02-15 12:48:47,888 INFO L87 Difference]: Start difference. First operand 179 states and 209 transitions. Second operand has 35 states, 35 states have (on average 3.1714285714285713) internal successors, (111), 35 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:49:11,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:49:11,999 INFO L93 Difference]: Finished difference Result 321 states and 364 transitions. [2023-02-15 12:49:12,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-02-15 12:49:12,001 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.1714285714285713) internal successors, (111), 35 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2023-02-15 12:49:12,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:49:12,002 INFO L225 Difference]: With dead ends: 321 [2023-02-15 12:49:12,002 INFO L226 Difference]: Without dead ends: 292 [2023-02-15 12:49:12,003 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 783 ImplicationChecksByTransitivity, 22.8s TimeCoverageRelationStatistics Valid=858, Invalid=4112, Unknown=0, NotChecked=0, Total=4970 [2023-02-15 12:49:12,004 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 733 mSDsluCounter, 581 mSDsCounter, 0 mSdLazyCounter, 1095 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 733 SdHoareTripleChecker+Valid, 612 SdHoareTripleChecker+Invalid, 1103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1095 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2023-02-15 12:49:12,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [733 Valid, 612 Invalid, 1103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1095 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2023-02-15 12:49:12,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2023-02-15 12:49:12,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 188. [2023-02-15 12:49:12,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 186 states have (on average 1.1720430107526882) internal successors, (218), 187 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:49:12,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 218 transitions. [2023-02-15 12:49:12,007 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 218 transitions. Word has length 60 [2023-02-15 12:49:12,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:49:12,007 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 218 transitions. [2023-02-15 12:49:12,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.1714285714285713) internal successors, (111), 35 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:49:12,007 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 218 transitions. [2023-02-15 12:49:12,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-02-15 12:49:12,007 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:49:12,007 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:49:12,029 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-02-15 12:49:12,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:49:12,216 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-02-15 12:49:12,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:49:12,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1198865259, now seen corresponding path program 6 times [2023-02-15 12:49:12,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 12:49:12,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1550588136] [2023-02-15 12:49:12,217 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-15 12:49:12,217 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:49:12,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 12:49:12,218 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 12:49:12,228 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-02-15 12:49:12,395 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2023-02-15 12:49:12,395 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 12:49:12,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 24 conjunts are in the unsatisfiable core [2023-02-15 12:49:12,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:49:12,445 INFO L350 Elim1Store]: Elim1 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 8 treesize of output 7 [2023-02-15 12:49:14,758 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 132 proven. 78 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-02-15 12:49:14,759 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 12:49:17,569 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 132 proven. 78 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-02-15 12:49:17,570 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 12:49:17,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1550588136] [2023-02-15 12:49:17,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1550588136] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 12:49:17,570 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 12:49:17,570 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 30 [2023-02-15 12:49:17,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125960038] [2023-02-15 12:49:17,570 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 12:49:17,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-02-15 12:49:17,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 12:49:17,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-02-15 12:49:17,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=731, Unknown=0, NotChecked=0, Total=870 [2023-02-15 12:49:17,571 INFO L87 Difference]: Start difference. First operand 188 states and 218 transitions. Second operand has 30 states, 30 states have (on average 3.033333333333333) internal successors, (91), 30 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:49:24,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:49:24,796 INFO L93 Difference]: Finished difference Result 266 states and 303 transitions. [2023-02-15 12:49:24,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-02-15 12:49:24,798 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 3.033333333333333) internal successors, (91), 30 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2023-02-15 12:49:24,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:49:24,798 INFO L225 Difference]: With dead ends: 266 [2023-02-15 12:49:24,798 INFO L226 Difference]: Without dead ends: 188 [2023-02-15 12:49:24,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=386, Invalid=1506, Unknown=0, NotChecked=0, Total=1892 [2023-02-15 12:49:24,799 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 487 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 674 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 487 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-02-15 12:49:24,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [487 Valid, 407 Invalid, 676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 674 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-02-15 12:49:24,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2023-02-15 12:49:24,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2023-02-15 12:49:24,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 186 states have (on average 1.1612903225806452) internal successors, (216), 187 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:49:24,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 216 transitions. [2023-02-15 12:49:24,802 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 216 transitions. Word has length 68 [2023-02-15 12:49:24,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:49:24,802 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 216 transitions. [2023-02-15 12:49:24,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 3.033333333333333) internal successors, (91), 30 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:49:24,802 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 216 transitions. [2023-02-15 12:49:24,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-02-15 12:49:24,802 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:49:24,802 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:49:24,813 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2023-02-15 12:49:25,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:49:25,003 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-02-15 12:49:25,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:49:25,004 INFO L85 PathProgramCache]: Analyzing trace with hash 253880091, now seen corresponding path program 7 times [2023-02-15 12:49:25,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 12:49:25,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [742379147] [2023-02-15 12:49:25,004 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-02-15 12:49:25,005 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:49:25,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 12:49:25,007 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 12:49:25,007 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-02-15 12:49:25,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:49:25,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 32 conjunts are in the unsatisfiable core [2023-02-15 12:49:25,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:49:25,164 INFO L350 Elim1Store]: Elim1 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 8 treesize of output 7 [2023-02-15 12:49:27,757 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 120 proven. 164 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-02-15 12:49:27,757 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 12:49:37,487 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 0 proven. 308 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 12:49:37,487 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 12:49:37,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [742379147] [2023-02-15 12:49:37,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [742379147] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 12:49:37,487 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 12:49:37,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 23] total 41 [2023-02-15 12:49:37,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735169313] [2023-02-15 12:49:37,487 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 12:49:37,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-02-15 12:49:37,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 12:49:37,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-02-15 12:49:37,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=1453, Unknown=0, NotChecked=0, Total=1640 [2023-02-15 12:49:37,489 INFO L87 Difference]: Start difference. First operand 188 states and 216 transitions. Second operand has 41 states, 41 states have (on average 3.3902439024390243) internal successors, (139), 41 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:50:06,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:50:06,105 INFO L93 Difference]: Finished difference Result 358 states and 402 transitions. [2023-02-15 12:50:06,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-02-15 12:50:06,107 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.3902439024390243) internal successors, (139), 41 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2023-02-15 12:50:06,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:50:06,108 INFO L225 Difference]: With dead ends: 358 [2023-02-15 12:50:06,108 INFO L226 Difference]: Without dead ends: 301 [2023-02-15 12:50:06,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 982 ImplicationChecksByTransitivity, 23.9s TimeCoverageRelationStatistics Valid=1033, Invalid=5447, Unknown=0, NotChecked=0, Total=6480 [2023-02-15 12:50:06,109 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 918 mSDsluCounter, 1156 mSDsCounter, 0 mSdLazyCounter, 2169 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 918 SdHoareTripleChecker+Valid, 1207 SdHoareTripleChecker+Invalid, 2174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 2169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.5s IncrementalHoareTripleChecker+Time [2023-02-15 12:50:06,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [918 Valid, 1207 Invalid, 2174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 2169 Invalid, 0 Unknown, 0 Unchecked, 13.5s Time] [2023-02-15 12:50:06,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2023-02-15 12:50:06,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 196. [2023-02-15 12:50:06,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 194 states have (on average 1.1546391752577319) internal successors, (224), 195 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:50:06,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 224 transitions. [2023-02-15 12:50:06,113 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 224 transitions. Word has length 76 [2023-02-15 12:50:06,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:50:06,113 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 224 transitions. [2023-02-15 12:50:06,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.3902439024390243) internal successors, (139), 41 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:50:06,113 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 224 transitions. [2023-02-15 12:50:06,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-02-15 12:50:06,114 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:50:06,114 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:50:06,122 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Ended with exit code 0 [2023-02-15 12:50:06,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:50:06,322 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-02-15 12:50:06,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:50:06,322 INFO L85 PathProgramCache]: Analyzing trace with hash 266089230, now seen corresponding path program 8 times [2023-02-15 12:50:06,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 12:50:06,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1533496074] [2023-02-15 12:50:06,322 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 12:50:06,323 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:50:06,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 12:50:06,324 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 12:50:06,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-02-15 12:50:06,477 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 12:50:06,478 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 12:50:06,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 34 conjunts are in the unsatisfiable core [2023-02-15 12:50:06,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:50:06,527 INFO L350 Elim1Store]: Elim1 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 8 treesize of output 7 [2023-02-15 12:50:10,321 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 38 proven. 282 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 12:50:10,321 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 12:50:24,284 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 0 proven. 320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 12:50:24,284 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 12:50:24,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1533496074] [2023-02-15 12:50:24,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1533496074] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 12:50:24,285 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 12:50:24,285 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 25] total 48 [2023-02-15 12:50:24,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343898920] [2023-02-15 12:50:24,285 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 12:50:24,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-02-15 12:50:24,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 12:50:24,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-02-15 12:50:24,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=266, Invalid=1990, Unknown=0, NotChecked=0, Total=2256 [2023-02-15 12:50:24,286 INFO L87 Difference]: Start difference. First operand 196 states and 224 transitions. Second operand has 48 states, 48 states have (on average 3.2916666666666665) internal successors, (158), 48 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:51:06,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:51:06,949 INFO L93 Difference]: Finished difference Result 442 states and 493 transitions. [2023-02-15 12:51:06,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2023-02-15 12:51:06,951 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 3.2916666666666665) internal successors, (158), 48 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2023-02-15 12:51:06,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:51:06,952 INFO L225 Difference]: With dead ends: 442 [2023-02-15 12:51:06,952 INFO L226 Difference]: Without dead ends: 292 [2023-02-15 12:51:06,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2152 ImplicationChecksByTransitivity, 38.8s TimeCoverageRelationStatistics Valid=1973, Invalid=9583, Unknown=0, NotChecked=0, Total=11556 [2023-02-15 12:51:06,954 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 1126 mSDsluCounter, 1730 mSDsCounter, 0 mSdLazyCounter, 3240 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1126 SdHoareTripleChecker+Valid, 1811 SdHoareTripleChecker+Invalid, 3250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 3240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.1s IncrementalHoareTripleChecker+Time [2023-02-15 12:51:06,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1126 Valid, 1811 Invalid, 3250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 3240 Invalid, 0 Unknown, 0 Unchecked, 16.1s Time] [2023-02-15 12:51:06,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2023-02-15 12:51:06,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 188. [2023-02-15 12:51:06,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 186 states have (on average 1.1451612903225807) internal successors, (213), 187 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:51:06,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 213 transitions. [2023-02-15 12:51:06,957 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 213 transitions. Word has length 80 [2023-02-15 12:51:06,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:51:06,957 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 213 transitions. [2023-02-15 12:51:06,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 3.2916666666666665) internal successors, (158), 48 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 12:51:06,958 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 213 transitions. [2023-02-15 12:51:06,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-02-15 12:51:06,958 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:51:06,958 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:51:06,969 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Ended with exit code 0 [2023-02-15 12:51:07,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:51:07,167 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-02-15 12:51:07,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:51:07,168 INFO L85 PathProgramCache]: Analyzing trace with hash 2070264980, now seen corresponding path program 9 times [2023-02-15 12:51:07,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 12:51:07,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [914619081] [2023-02-15 12:51:07,168 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-15 12:51:07,168 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:51:07,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 12:51:07,169 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 12:51:07,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-02-15 12:51:07,895 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2023-02-15 12:51:07,895 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 12:51:07,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 26 conjunts are in the unsatisfiable core [2023-02-15 12:51:07,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:51:07,942 INFO L350 Elim1Store]: Elim1 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 8 treesize of output 7 [2023-02-15 12:51:11,068 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2023-02-15 12:51:11,068 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 12:51:19,398 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2023-02-15 12:51:19,398 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 12:51:19,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [914619081] [2023-02-15 12:51:19,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [914619081] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 12:51:19,398 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 12:51:19,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 31 [2023-02-15 12:51:19,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232439613] [2023-02-15 12:51:19,399 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 12:51:19,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-02-15 12:51:19,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 12:51:19,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-02-15 12:51:19,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=777, Unknown=0, NotChecked=0, Total=992 [2023-02-15 12:51:19,400 INFO L87 Difference]: Start difference. First operand 188 states and 213 transitions. Second operand has 32 states, 31 states have (on average 3.2903225806451615) internal successors, (102), 32 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)