./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ldv-memsafety/memleaks_test14_2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 574ddb4e Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/ldv-memsafety/memleaks_test14_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 d789cb2558e3de4d1d16c03a2a21714577a96d35a26f84712733ec2a50aa0d89 --- Real Ultimate output --- This is Ultimate 0.2.2-?-574ddb4 [2023-02-17 08:32:36,712 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-17 08:32:36,713 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-17 08:32:36,736 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-17 08:32:36,737 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-17 08:32:36,738 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-17 08:32:36,739 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-17 08:32:36,741 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-17 08:32:36,742 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-17 08:32:36,743 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-17 08:32:36,744 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-17 08:32:36,745 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-17 08:32:36,745 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-17 08:32:36,746 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-17 08:32:36,747 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-17 08:32:36,748 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-17 08:32:36,749 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-17 08:32:36,750 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-17 08:32:36,751 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-17 08:32:36,758 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-17 08:32:36,760 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-17 08:32:36,761 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-17 08:32:36,762 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-17 08:32:36,762 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-17 08:32:36,766 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-17 08:32:36,770 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-17 08:32:36,770 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-17 08:32:36,771 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-17 08:32:36,771 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-17 08:32:36,776 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-17 08:32:36,777 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-17 08:32:36,778 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-17 08:32:36,778 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-17 08:32:36,779 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-17 08:32:36,780 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-17 08:32:36,780 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-17 08:32:36,782 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-17 08:32:36,782 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-17 08:32:36,782 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-17 08:32:36,783 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-17 08:32:36,785 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-17 08:32:36,786 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-02-17 08:32:36,816 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-17 08:32:36,816 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-17 08:32:36,817 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-17 08:32:36,817 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-17 08:32:36,818 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-17 08:32:36,818 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-17 08:32:36,819 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-17 08:32:36,819 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-17 08:32:36,819 INFO L138 SettingsManager]: * Use SBE=true [2023-02-17 08:32:36,820 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-17 08:32:36,820 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-17 08:32:36,821 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-17 08:32:36,821 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-17 08:32:36,821 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-17 08:32:36,821 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-17 08:32:36,821 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-02-17 08:32:36,821 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-02-17 08:32:36,822 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-02-17 08:32:36,822 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-17 08:32:36,822 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-17 08:32:36,822 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-17 08:32:36,822 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-17 08:32:36,822 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-17 08:32:36,823 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-17 08:32:36,823 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-17 08:32:36,823 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 08:32:36,823 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-17 08:32:36,823 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-17 08:32:36,823 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-17 08:32:36,824 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-17 08:32:36,824 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-17 08:32:36,824 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-17 08:32:36,824 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-17 08:32:36,824 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-17 08:32:36,825 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d789cb2558e3de4d1d16c03a2a21714577a96d35a26f84712733ec2a50aa0d89 [2023-02-17 08:32:37,069 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-17 08:32:37,095 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-17 08:32:37,097 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-17 08:32:37,098 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-17 08:32:37,098 INFO L275 PluginConnector]: CDTParser initialized [2023-02-17 08:32:37,099 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test14_2.i [2023-02-17 08:32:38,247 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-17 08:32:38,476 INFO L351 CDTParser]: Found 1 translation units. [2023-02-17 08:32:38,476 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test14_2.i [2023-02-17 08:32:38,487 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0512fc346/1fab98042a8d4f8889e622a8dc94b96b/FLAG1cc9dc15c [2023-02-17 08:32:38,499 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0512fc346/1fab98042a8d4f8889e622a8dc94b96b [2023-02-17 08:32:38,501 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-17 08:32:38,503 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-17 08:32:38,504 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-17 08:32:38,504 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-17 08:32:38,508 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-17 08:32:38,508 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 08:32:38" (1/1) ... [2023-02-17 08:32:38,511 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fea23bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 08:32:38, skipping insertion in model container [2023-02-17 08:32:38,511 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 08:32:38" (1/1) ... [2023-02-17 08:32:38,517 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-17 08:32:38,577 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-17 08:32:38,955 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 08:32:38,973 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) [2023-02-17 08:32:38,974 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@315986a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 08:32:38, skipping insertion in model container [2023-02-17 08:32:38,974 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-17 08:32:38,976 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-02-17 08:32:38,978 INFO L158 Benchmark]: Toolchain (without parser) took 474.27ms. Allocated memory is still 136.3MB. Free memory was 93.9MB in the beginning and 103.3MB in the end (delta: -9.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-17 08:32:38,978 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 113.2MB. Free memory is still 84.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-17 08:32:38,979 INFO L158 Benchmark]: CACSL2BoogieTranslator took 472.36ms. Allocated memory is still 136.3MB. Free memory was 93.9MB in the beginning and 103.6MB in the end (delta: -9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-17 08:32:38,980 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 113.2MB. Free memory is still 84.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 472.36ms. Allocated memory is still 136.3MB. Free memory was 93.9MB in the beginning and 103.6MB in the end (delta: -9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/ldv-memsafety/memleaks_test14_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 d789cb2558e3de4d1d16c03a2a21714577a96d35a26f84712733ec2a50aa0d89 --- Real Ultimate output --- This is Ultimate 0.2.2-?-574ddb4 [2023-02-17 08:32:40,831 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-17 08:32:40,833 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-17 08:32:40,871 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-17 08:32:40,873 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-17 08:32:40,876 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-17 08:32:40,878 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-17 08:32:40,881 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-17 08:32:40,886 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-17 08:32:40,890 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-17 08:32:40,891 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-17 08:32:40,893 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-17 08:32:40,894 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-17 08:32:40,896 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-17 08:32:40,897 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-17 08:32:40,898 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-17 08:32:40,899 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-17 08:32:40,901 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-17 08:32:40,903 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-17 08:32:40,905 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-17 08:32:40,906 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-17 08:32:40,909 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-17 08:32:40,910 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-17 08:32:40,911 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-17 08:32:40,916 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-17 08:32:40,919 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-17 08:32:40,919 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-17 08:32:40,920 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-17 08:32:40,922 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-17 08:32:40,922 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-17 08:32:40,923 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-17 08:32:40,925 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-17 08:32:40,927 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-17 08:32:40,927 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-17 08:32:40,928 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-17 08:32:40,929 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-17 08:32:40,930 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-17 08:32:40,930 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-17 08:32:40,930 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-17 08:32:40,931 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-17 08:32:40,932 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-17 08:32:40,933 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-02-17 08:32:40,962 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-17 08:32:40,963 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-17 08:32:40,964 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-17 08:32:40,964 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-17 08:32:40,965 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-17 08:32:40,965 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-17 08:32:40,966 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-17 08:32:40,966 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-17 08:32:40,966 INFO L138 SettingsManager]: * Use SBE=true [2023-02-17 08:32:40,966 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-17 08:32:40,967 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-17 08:32:40,967 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-17 08:32:40,967 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-17 08:32:40,968 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-17 08:32:40,968 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-17 08:32:40,968 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-02-17 08:32:40,968 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-02-17 08:32:40,968 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-02-17 08:32:40,969 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-17 08:32:40,969 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-17 08:32:40,969 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-02-17 08:32:40,969 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-02-17 08:32:40,969 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-17 08:32:40,970 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-17 08:32:40,976 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-17 08:32:40,976 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-17 08:32:40,977 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-17 08:32:40,977 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 08:32:40,977 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-17 08:32:40,977 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-17 08:32:40,977 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-02-17 08:32:40,978 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-02-17 08:32:40,978 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-17 08:32:40,978 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-17 08:32:40,978 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-17 08:32:40,978 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-02-17 08:32:40,979 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-17 08:32:40,979 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d789cb2558e3de4d1d16c03a2a21714577a96d35a26f84712733ec2a50aa0d89 [2023-02-17 08:32:41,280 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-17 08:32:41,303 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-17 08:32:41,306 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-17 08:32:41,307 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-17 08:32:41,308 INFO L275 PluginConnector]: CDTParser initialized [2023-02-17 08:32:41,309 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test14_2.i [2023-02-17 08:32:42,432 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-17 08:32:42,760 INFO L351 CDTParser]: Found 1 translation units. [2023-02-17 08:32:42,761 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test14_2.i [2023-02-17 08:32:42,774 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a783bbb76/31d9ce775c6140cfb38fddc224c0704f/FLAG3769aefca [2023-02-17 08:32:42,788 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a783bbb76/31d9ce775c6140cfb38fddc224c0704f [2023-02-17 08:32:42,792 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-17 08:32:42,794 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-17 08:32:42,795 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-17 08:32:42,795 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-17 08:32:42,798 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-17 08:32:42,799 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 08:32:42" (1/1) ... [2023-02-17 08:32:42,800 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7930645a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 08:32:42, skipping insertion in model container [2023-02-17 08:32:42,800 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 08:32:42" (1/1) ... [2023-02-17 08:32:42,806 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-17 08:32:42,842 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-17 08:32:43,220 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 08:32:43,254 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-02-17 08:32:43,261 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-17 08:32:43,325 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 08:32:43,340 INFO L203 MainTranslator]: Completed pre-run [2023-02-17 08:32:43,412 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 08:32:43,457 INFO L208 MainTranslator]: Completed translation [2023-02-17 08:32:43,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 08:32:43 WrapperNode [2023-02-17 08:32:43,457 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-17 08:32:43,459 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-17 08:32:43,459 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-17 08:32:43,459 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-17 08:32:43,466 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 08:32:43" (1/1) ... [2023-02-17 08:32:43,502 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 08:32:43" (1/1) ... [2023-02-17 08:32:43,528 INFO L138 Inliner]: procedures = 168, calls = 79, calls flagged for inlining = 21, calls inlined = 6, statements flattened = 55 [2023-02-17 08:32:43,529 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-17 08:32:43,530 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-17 08:32:43,530 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-17 08:32:43,530 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-17 08:32:43,547 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 08:32:43" (1/1) ... [2023-02-17 08:32:43,548 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 08:32:43" (1/1) ... [2023-02-17 08:32:43,557 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 08:32:43" (1/1) ... [2023-02-17 08:32:43,557 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 08:32:43" (1/1) ... [2023-02-17 08:32:43,564 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 08:32:43" (1/1) ... [2023-02-17 08:32:43,567 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 08:32:43" (1/1) ... [2023-02-17 08:32:43,570 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 08:32:43" (1/1) ... [2023-02-17 08:32:43,571 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 08:32:43" (1/1) ... [2023-02-17 08:32:43,574 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-17 08:32:43,577 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-17 08:32:43,577 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-17 08:32:43,578 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-17 08:32:43,578 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 08:32:43" (1/1) ... [2023-02-17 08:32:43,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 08:32:43,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 08:32:43,605 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) [2023-02-17 08:32:43,628 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 [2023-02-17 08:32:43,646 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2023-02-17 08:32:43,646 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2023-02-17 08:32:43,646 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-02-17 08:32:43,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-02-17 08:32:43,648 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2023-02-17 08:32:43,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2023-02-17 08:32:43,648 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-17 08:32:43,648 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-17 08:32:43,649 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-17 08:32:43,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-02-17 08:32:43,649 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-02-17 08:32:43,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-17 08:32:43,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-02-17 08:32:43,649 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2023-02-17 08:32:43,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2023-02-17 08:32:43,650 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-17 08:32:43,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-17 08:32:43,831 INFO L235 CfgBuilder]: Building ICFG [2023-02-17 08:32:43,833 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-17 08:32:44,187 INFO L276 CfgBuilder]: Performing block encoding [2023-02-17 08:32:44,192 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-17 08:32:44,192 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-17 08:32:44,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 08:32:44 BoogieIcfgContainer [2023-02-17 08:32:44,194 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-17 08:32:44,196 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-17 08:32:44,201 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-17 08:32:44,206 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-17 08:32:44,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.02 08:32:42" (1/3) ... [2023-02-17 08:32:44,208 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7967a7ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 08:32:44, skipping insertion in model container [2023-02-17 08:32:44,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 08:32:43" (2/3) ... [2023-02-17 08:32:44,208 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7967a7ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 08:32:44, skipping insertion in model container [2023-02-17 08:32:44,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 08:32:44" (3/3) ... [2023-02-17 08:32:44,210 INFO L112 eAbstractionObserver]: Analyzing ICFG memleaks_test14_2.i [2023-02-17 08:32:44,225 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-17 08:32:44,226 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 25 error locations. [2023-02-17 08:32:44,273 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-17 08:32:44,280 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;@49f74344, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-17 08:32:44,281 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2023-02-17 08:32:44,284 INFO L276 IsEmpty]: Start isEmpty. Operand has 72 states, 38 states have (on average 1.763157894736842) internal successors, (67), 64 states have internal predecessors, (67), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-17 08:32:44,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-02-17 08:32:44,292 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 08:32:44,292 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 08:32:44,293 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-17 08:32:44,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 08:32:44,299 INFO L85 PathProgramCache]: Analyzing trace with hash 225826608, now seen corresponding path program 1 times [2023-02-17 08:32:44,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 08:32:44,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2010217361] [2023-02-17 08:32:44,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 08:32:44,311 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 [2023-02-17 08:32:44,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 08:32:44,319 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) [2023-02-17 08:32:44,321 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 [2023-02-17 08:32:44,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 08:32:44,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 11 conjunts are in the unsatisfiable core [2023-02-17 08:32:44,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 08:32:44,500 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 [2023-02-17 08:32:44,529 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (= |c_#valid| (store |c_old(#valid)| |ldv_malloc_#res.base| (_ bv1 1)))) is different from true [2023-02-17 08:32:44,549 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 08:32:44,550 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 28 [2023-02-17 08:32:44,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 08:32:44,584 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 08:32:44,585 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 08:32:44,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2010217361] [2023-02-17 08:32:44,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2010217361] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 08:32:44,586 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 08:32:44,586 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-17 08:32:44,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656222586] [2023-02-17 08:32:44,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 08:32:44,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-17 08:32:44,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 08:32:44,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-17 08:32:44,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=22, Unknown=1, NotChecked=8, Total=42 [2023-02-17 08:32:44,636 INFO L87 Difference]: Start difference. First operand has 72 states, 38 states have (on average 1.763157894736842) internal successors, (67), 64 states have internal predecessors, (67), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-17 08:32:44,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 08:32:44,970 INFO L93 Difference]: Finished difference Result 73 states and 75 transitions. [2023-02-17 08:32:44,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-17 08:32:44,972 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2023-02-17 08:32:44,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 08:32:44,979 INFO L225 Difference]: With dead ends: 73 [2023-02-17 08:32:44,979 INFO L226 Difference]: Without dead ends: 71 [2023-02-17 08:32:44,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=38, Unknown=1, NotChecked=12, Total=72 [2023-02-17 08:32:44,983 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 63 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 77 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-17 08:32:44,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 82 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 205 Invalid, 0 Unknown, 77 Unchecked, 0.3s Time] [2023-02-17 08:32:44,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2023-02-17 08:32:45,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 69. [2023-02-17 08:32:45,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 37 states have (on average 1.7027027027027026) internal successors, (63), 61 states have internal predecessors, (63), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-17 08:32:45,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 71 transitions. [2023-02-17 08:32:45,013 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 71 transitions. Word has length 12 [2023-02-17 08:32:45,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 08:32:45,014 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 71 transitions. [2023-02-17 08:32:45,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-17 08:32:45,014 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 71 transitions. [2023-02-17 08:32:45,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-02-17 08:32:45,015 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 08:32:45,015 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 08:32:45,023 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 [2023-02-17 08:32:45,221 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 [2023-02-17 08:32:45,221 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-17 08:32:45,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 08:32:45,222 INFO L85 PathProgramCache]: Analyzing trace with hash 225826609, now seen corresponding path program 1 times [2023-02-17 08:32:45,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 08:32:45,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1943451202] [2023-02-17 08:32:45,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 08:32:45,224 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 [2023-02-17 08:32:45,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 08:32:45,225 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) [2023-02-17 08:32:45,228 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 (3)] Waiting until timeout for monitored process [2023-02-17 08:32:45,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 08:32:45,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 20 conjunts are in the unsatisfiable core [2023-02-17 08:32:45,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 08:32:45,298 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 [2023-02-17 08:32:45,301 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 [2023-02-17 08:32:45,319 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (exists ((v_ArrVal_13 (_ BitVec 32))) (= |c_#length| (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_13))) (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)))) is different from true [2023-02-17 08:32:45,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 08:32:45,335 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-02-17 08:32:45,339 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 08:32:45,340 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2023-02-17 08:32:45,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 08:32:45,378 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 08:32:45,378 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 08:32:45,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1943451202] [2023-02-17 08:32:45,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1943451202] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 08:32:45,378 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 08:32:45,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-02-17 08:32:45,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930926503] [2023-02-17 08:32:45,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 08:32:45,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-17 08:32:45,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 08:32:45,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-17 08:32:45,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=31, Unknown=1, NotChecked=10, Total=56 [2023-02-17 08:32:45,381 INFO L87 Difference]: Start difference. First operand 69 states and 71 transitions. Second operand has 8 states, 6 states have (on average 1.5) internal successors, (9), 7 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-17 08:32:45,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 08:32:45,821 INFO L93 Difference]: Finished difference Result 90 states and 96 transitions. [2023-02-17 08:32:45,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-17 08:32:45,822 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.5) internal successors, (9), 7 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2023-02-17 08:32:45,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 08:32:45,824 INFO L225 Difference]: With dead ends: 90 [2023-02-17 08:32:45,824 INFO L226 Difference]: Without dead ends: 90 [2023-02-17 08:32:45,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=51, Unknown=1, NotChecked=14, Total=90 [2023-02-17 08:32:45,825 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 82 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 81 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-17 08:32:45,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 122 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 296 Invalid, 0 Unknown, 81 Unchecked, 0.4s Time] [2023-02-17 08:32:45,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2023-02-17 08:32:45,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 68. [2023-02-17 08:32:45,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 37 states have (on average 1.6756756756756757) internal successors, (62), 60 states have internal predecessors, (62), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-17 08:32:45,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 70 transitions. [2023-02-17 08:32:45,836 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 70 transitions. Word has length 12 [2023-02-17 08:32:45,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 08:32:45,836 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 70 transitions. [2023-02-17 08:32:45,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.5) internal successors, (9), 7 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-17 08:32:45,837 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 70 transitions. [2023-02-17 08:32:45,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-02-17 08:32:45,837 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 08:32:45,837 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 08:32:45,849 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 (3)] Forceful destruction successful, exit code 0 [2023-02-17 08:32:46,046 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 [2023-02-17 08:32:46,047 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-17 08:32:46,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 08:32:46,048 INFO L85 PathProgramCache]: Analyzing trace with hash 838569493, now seen corresponding path program 1 times [2023-02-17 08:32:46,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 08:32:46,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1611001702] [2023-02-17 08:32:46,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 08:32:46,049 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 [2023-02-17 08:32:46,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 08:32:46,050 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) [2023-02-17 08:32:46,053 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 [2023-02-17 08:32:46,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 08:32:46,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-17 08:32:46,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 08:32:46,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 08:32:46,117 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 08:32:46,117 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 08:32:46,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1611001702] [2023-02-17 08:32:46,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1611001702] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 08:32:46,118 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 08:32:46,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-17 08:32:46,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694591910] [2023-02-17 08:32:46,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 08:32:46,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-17 08:32:46,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 08:32:46,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-17 08:32:46,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-17 08:32:46,120 INFO L87 Difference]: Start difference. First operand 68 states and 70 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-17 08:32:46,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 08:32:46,141 INFO L93 Difference]: Finished difference Result 93 states and 97 transitions. [2023-02-17 08:32:46,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-17 08:32:46,142 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2023-02-17 08:32:46,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 08:32:46,143 INFO L225 Difference]: With dead ends: 93 [2023-02-17 08:32:46,143 INFO L226 Difference]: Without dead ends: 93 [2023-02-17 08:32:46,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-17 08:32:46,145 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 20 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 08:32:46,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 330 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 08:32:46,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2023-02-17 08:32:46,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 72. [2023-02-17 08:32:46,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 40 states have (on average 1.625) internal successors, (65), 63 states have internal predecessors, (65), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2023-02-17 08:32:46,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 74 transitions. [2023-02-17 08:32:46,152 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 74 transitions. Word has length 11 [2023-02-17 08:32:46,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 08:32:46,153 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 74 transitions. [2023-02-17 08:32:46,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-17 08:32:46,153 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 74 transitions. [2023-02-17 08:32:46,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-02-17 08:32:46,153 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 08:32:46,154 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 08:32:46,170 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 (4)] Forceful destruction successful, exit code 0 [2023-02-17 08:32:46,363 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 [2023-02-17 08:32:46,363 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-17 08:32:46,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 08:32:46,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1726073174, now seen corresponding path program 1 times [2023-02-17 08:32:46,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 08:32:46,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [338917225] [2023-02-17 08:32:46,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 08:32:46,367 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 [2023-02-17 08:32:46,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 08:32:46,368 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) [2023-02-17 08:32:46,372 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 [2023-02-17 08:32:46,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 08:32:46,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-17 08:32:46,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 08:32:46,441 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 [2023-02-17 08:32:46,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 08:32:46,461 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 08:32:46,461 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 08:32:46,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [338917225] [2023-02-17 08:32:46,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [338917225] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 08:32:46,462 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 08:32:46,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-17 08:32:46,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567336552] [2023-02-17 08:32:46,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 08:32:46,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-17 08:32:46,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 08:32:46,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-17 08:32:46,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-17 08:32:46,464 INFO L87 Difference]: Start difference. First operand 72 states and 74 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-17 08:32:46,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 08:32:46,710 INFO L93 Difference]: Finished difference Result 89 states and 94 transitions. [2023-02-17 08:32:46,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-17 08:32:46,711 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2023-02-17 08:32:46,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 08:32:46,712 INFO L225 Difference]: With dead ends: 89 [2023-02-17 08:32:46,712 INFO L226 Difference]: Without dead ends: 89 [2023-02-17 08:32:46,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-17 08:32:46,713 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 77 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-17 08:32:46,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 67 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-17 08:32:46,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2023-02-17 08:32:46,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 75. [2023-02-17 08:32:46,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 42 states have (on average 1.619047619047619) internal successors, (68), 65 states have internal predecessors, (68), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2023-02-17 08:32:46,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2023-02-17 08:32:46,719 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 11 [2023-02-17 08:32:46,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 08:32:46,720 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2023-02-17 08:32:46,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-17 08:32:46,720 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2023-02-17 08:32:46,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-02-17 08:32:46,721 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 08:32:46,721 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 08:32:46,735 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 (5)] Forceful destruction successful, exit code 0 [2023-02-17 08:32:46,930 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 [2023-02-17 08:32:46,930 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-17 08:32:46,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 08:32:46,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1726073175, now seen corresponding path program 1 times [2023-02-17 08:32:46,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 08:32:46,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [99594235] [2023-02-17 08:32:46,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 08:32:46,932 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 [2023-02-17 08:32:46,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 08:32:46,933 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) [2023-02-17 08:32:46,936 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 [2023-02-17 08:32:47,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 08:32:47,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-17 08:32:47,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 08:32:47,027 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 [2023-02-17 08:32:47,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 08:32:47,059 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 08:32:47,059 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 08:32:47,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [99594235] [2023-02-17 08:32:47,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [99594235] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 08:32:47,063 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 08:32:47,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-17 08:32:47,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328019349] [2023-02-17 08:32:47,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 08:32:47,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-17 08:32:47,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 08:32:47,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-17 08:32:47,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-17 08:32:47,065 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-17 08:32:47,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 08:32:47,338 INFO L93 Difference]: Finished difference Result 91 states and 95 transitions. [2023-02-17 08:32:47,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-17 08:32:47,339 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2023-02-17 08:32:47,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 08:32:47,340 INFO L225 Difference]: With dead ends: 91 [2023-02-17 08:32:47,340 INFO L226 Difference]: Without dead ends: 91 [2023-02-17 08:32:47,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-17 08:32:47,341 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 66 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-17 08:32:47,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 82 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-17 08:32:47,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2023-02-17 08:32:47,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 75. [2023-02-17 08:32:47,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 42 states have (on average 1.5952380952380953) internal successors, (67), 65 states have internal predecessors, (67), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2023-02-17 08:32:47,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 78 transitions. [2023-02-17 08:32:47,346 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 78 transitions. Word has length 11 [2023-02-17 08:32:47,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 08:32:47,347 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 78 transitions. [2023-02-17 08:32:47,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-17 08:32:47,347 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 78 transitions. [2023-02-17 08:32:47,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-02-17 08:32:47,348 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 08:32:47,348 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 08:32:47,357 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 [2023-02-17 08:32:47,556 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 [2023-02-17 08:32:47,557 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-17 08:32:47,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 08:32:47,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1681752525, now seen corresponding path program 1 times [2023-02-17 08:32:47,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 08:32:47,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1932151008] [2023-02-17 08:32:47,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 08:32:47,559 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 [2023-02-17 08:32:47,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 08:32:47,560 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) [2023-02-17 08:32:47,564 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 [2023-02-17 08:32:47,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 08:32:47,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 16 conjunts are in the unsatisfiable core [2023-02-17 08:32:47,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 08:32:49,651 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_alloc_14_~list#1.offset_BEFORE_CALL_3| (_ BitVec 32)) (|v_ULTIMATE.start_alloc_14_~list#1.base_BEFORE_CALL_5| (_ BitVec 32))) (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_alloc_14_~list#1.base_BEFORE_CALL_5|) |v_ULTIMATE.start_alloc_14_~list#1.offset_BEFORE_CALL_3|) |v_ULTIMATE.start_alloc_14_~list#1.base_BEFORE_CALL_5|)) is different from true [2023-02-17 08:32:49,691 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-02-17 08:32:49,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 08:32:49,712 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 08:32:49,712 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 08:32:49,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1932151008] [2023-02-17 08:32:49,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1932151008] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 08:32:49,712 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 08:32:49,712 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-02-17 08:32:49,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974010407] [2023-02-17 08:32:49,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 08:32:49,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-17 08:32:49,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 08:32:49,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-17 08:32:49,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=44, Unknown=1, NotChecked=12, Total=72 [2023-02-17 08:32:49,714 INFO L87 Difference]: Start difference. First operand 75 states and 78 transitions. Second operand has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-17 08:32:49,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 08:32:49,994 INFO L93 Difference]: Finished difference Result 93 states and 96 transitions. [2023-02-17 08:32:49,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-17 08:32:49,995 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2023-02-17 08:32:49,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 08:32:49,996 INFO L225 Difference]: With dead ends: 93 [2023-02-17 08:32:49,996 INFO L226 Difference]: Without dead ends: 93 [2023-02-17 08:32:49,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=29, Invalid=84, Unknown=1, NotChecked=18, Total=132 [2023-02-17 08:32:49,997 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 38 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 107 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-17 08:32:49,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 288 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 178 Invalid, 0 Unknown, 107 Unchecked, 0.3s Time] [2023-02-17 08:32:49,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2023-02-17 08:32:50,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 85. [2023-02-17 08:32:50,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 50 states have (on average 1.64) internal successors, (82), 73 states have internal predecessors, (82), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2023-02-17 08:32:50,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 95 transitions. [2023-02-17 08:32:50,003 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 95 transitions. Word has length 15 [2023-02-17 08:32:50,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 08:32:50,003 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 95 transitions. [2023-02-17 08:32:50,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-17 08:32:50,003 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 95 transitions. [2023-02-17 08:32:50,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-02-17 08:32:50,010 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 08:32:50,010 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 08:32:50,019 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 (7)] Ended with exit code 0 [2023-02-17 08:32:50,219 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 [2023-02-17 08:32:50,219 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-17 08:32:50,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 08:32:50,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1681752526, now seen corresponding path program 1 times [2023-02-17 08:32:50,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 08:32:50,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [256410701] [2023-02-17 08:32:50,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 08:32:50,221 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 [2023-02-17 08:32:50,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 08:32:50,222 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) [2023-02-17 08:32:50,225 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 [2023-02-17 08:32:50,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 08:32:50,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 32 conjunts are in the unsatisfiable core [2023-02-17 08:32:50,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 08:32:50,313 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 6 treesize of output 5 [2023-02-17 08:32:50,317 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 [2023-02-17 08:32:50,330 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-02-17 08:32:50,337 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-02-17 08:32:50,355 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_alloc_14_~list#1.base_BEFORE_CALL_7| (_ BitVec 32))) (and (= (select (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_alloc_14_~list#1.base_BEFORE_CALL_7|) (_ bv0 32)) (_ bv0 32)) (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_alloc_14_~list#1.base_BEFORE_CALL_7|) (_ bv0 32)) |v_ULTIMATE.start_alloc_14_~list#1.base_BEFORE_CALL_7|))) (exists ((v_ArrVal_34 (_ BitVec 32)) (|ldv_malloc_#res.base| (_ BitVec 32))) (and (= |c_#length| (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_34)) (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|))))) is different from true [2023-02-17 08:32:50,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 08:32:50,374 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-02-17 08:32:50,380 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 08:32:50,380 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2023-02-17 08:32:50,454 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 08:32:50,454 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 18 [2023-02-17 08:32:50,460 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 08:32:50,461 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 18 [2023-02-17 08:32:50,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 08:32:50,515 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 08:32:50,515 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 08:32:50,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [256410701] [2023-02-17 08:32:50,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [256410701] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 08:32:50,515 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 08:32:50,515 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-02-17 08:32:50,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486947123] [2023-02-17 08:32:50,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 08:32:50,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-02-17 08:32:50,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 08:32:50,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-17 08:32:50,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=73, Unknown=1, NotChecked=16, Total=110 [2023-02-17 08:32:50,517 INFO L87 Difference]: Start difference. First operand 85 states and 95 transitions. Second operand has 11 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-17 08:32:51,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 08:32:51,327 INFO L93 Difference]: Finished difference Result 108 states and 118 transitions. [2023-02-17 08:32:51,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-17 08:32:51,328 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2023-02-17 08:32:51,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 08:32:51,329 INFO L225 Difference]: With dead ends: 108 [2023-02-17 08:32:51,329 INFO L226 Difference]: Without dead ends: 108 [2023-02-17 08:32:51,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=190, Unknown=1, NotChecked=28, Total=272 [2023-02-17 08:32:51,330 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 61 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 104 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-02-17 08:32:51,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 234 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 372 Invalid, 0 Unknown, 104 Unchecked, 0.7s Time] [2023-02-17 08:32:51,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2023-02-17 08:32:51,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 84. [2023-02-17 08:32:51,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 50 states have (on average 1.6) internal successors, (80), 72 states have internal predecessors, (80), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2023-02-17 08:32:51,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 93 transitions. [2023-02-17 08:32:51,336 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 93 transitions. Word has length 15 [2023-02-17 08:32:51,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 08:32:51,336 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 93 transitions. [2023-02-17 08:32:51,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-17 08:32:51,337 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 93 transitions. [2023-02-17 08:32:51,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-02-17 08:32:51,337 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 08:32:51,337 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 08:32:51,349 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 (8)] Forceful destruction successful, exit code 0 [2023-02-17 08:32:51,547 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 [2023-02-17 08:32:51,547 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-17 08:32:51,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 08:32:51,548 INFO L85 PathProgramCache]: Analyzing trace with hash -115198834, now seen corresponding path program 1 times [2023-02-17 08:32:51,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 08:32:51,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1712845584] [2023-02-17 08:32:51,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 08:32:51,548 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 [2023-02-17 08:32:51,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 08:32:51,550 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) [2023-02-17 08:32:51,553 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 [2023-02-17 08:32:51,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 08:32:51,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-17 08:32:51,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 08:32:51,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 08:32:51,627 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 08:32:51,627 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 08:32:51,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1712845584] [2023-02-17 08:32:51,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1712845584] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 08:32:51,628 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 08:32:51,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-17 08:32:51,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927084336] [2023-02-17 08:32:51,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 08:32:51,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-17 08:32:51,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 08:32:51,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-17 08:32:51,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-17 08:32:51,630 INFO L87 Difference]: Start difference. First operand 84 states and 93 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-17 08:32:51,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 08:32:51,658 INFO L93 Difference]: Finished difference Result 88 states and 90 transitions. [2023-02-17 08:32:51,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-17 08:32:51,659 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2023-02-17 08:32:51,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 08:32:51,660 INFO L225 Difference]: With dead ends: 88 [2023-02-17 08:32:51,660 INFO L226 Difference]: Without dead ends: 88 [2023-02-17 08:32:51,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-17 08:32:51,661 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 18 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 08:32:51,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 268 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 08:32:51,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2023-02-17 08:32:51,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 72. [2023-02-17 08:32:51,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 42 states have (on average 1.5238095238095237) internal successors, (64), 62 states have internal predecessors, (64), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2023-02-17 08:32:51,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 73 transitions. [2023-02-17 08:32:51,675 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 73 transitions. Word has length 15 [2023-02-17 08:32:51,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 08:32:51,675 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 73 transitions. [2023-02-17 08:32:51,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-17 08:32:51,675 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 73 transitions. [2023-02-17 08:32:51,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-02-17 08:32:51,678 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 08:32:51,678 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 08:32:51,692 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 [2023-02-17 08:32:51,887 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 [2023-02-17 08:32:51,888 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-17 08:32:51,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 08:32:51,889 INFO L85 PathProgramCache]: Analyzing trace with hash 898943928, now seen corresponding path program 1 times [2023-02-17 08:32:51,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 08:32:51,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [679981515] [2023-02-17 08:32:51,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 08:32:51,889 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 [2023-02-17 08:32:51,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 08:32:51,891 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) [2023-02-17 08:32:51,893 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 [2023-02-17 08:32:51,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 08:32:51,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 18 conjunts are in the unsatisfiable core [2023-02-17 08:32:51,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 08:32:51,992 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 [2023-02-17 08:32:52,000 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-02-17 08:32:52,051 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-02-17 08:32:52,071 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-02-17 08:32:52,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 08:32:52,090 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 08:32:52,090 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 08:32:52,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [679981515] [2023-02-17 08:32:52,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [679981515] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 08:32:52,091 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 08:32:52,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-17 08:32:52,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989798871] [2023-02-17 08:32:52,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 08:32:52,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-17 08:32:52,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 08:32:52,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-17 08:32:52,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-02-17 08:32:52,094 INFO L87 Difference]: Start difference. First operand 72 states and 73 transitions. Second operand has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 7 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-17 08:32:52,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 08:32:52,529 INFO L93 Difference]: Finished difference Result 94 states and 96 transitions. [2023-02-17 08:32:52,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-17 08:32:52,530 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 7 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2023-02-17 08:32:52,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 08:32:52,530 INFO L225 Difference]: With dead ends: 94 [2023-02-17 08:32:52,530 INFO L226 Difference]: Without dead ends: 94 [2023-02-17 08:32:52,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-02-17 08:32:52,531 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 36 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-17 08:32:52,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 195 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-17 08:32:52,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2023-02-17 08:32:52,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 74. [2023-02-17 08:32:52,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 44 states have (on average 1.5227272727272727) internal successors, (67), 64 states have internal predecessors, (67), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2023-02-17 08:32:52,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 76 transitions. [2023-02-17 08:32:52,535 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 76 transitions. Word has length 13 [2023-02-17 08:32:52,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 08:32:52,535 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 76 transitions. [2023-02-17 08:32:52,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 7 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-17 08:32:52,535 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 76 transitions. [2023-02-17 08:32:52,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-02-17 08:32:52,535 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 08:32:52,535 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 08:32:52,545 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 (10)] Forceful destruction successful, exit code 0 [2023-02-17 08:32:52,744 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 [2023-02-17 08:32:52,744 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-17 08:32:52,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 08:32:52,745 INFO L85 PathProgramCache]: Analyzing trace with hash 898943927, now seen corresponding path program 1 times [2023-02-17 08:32:52,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 08:32:52,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [408950773] [2023-02-17 08:32:52,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 08:32:52,745 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 [2023-02-17 08:32:52,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 08:32:52,747 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) [2023-02-17 08:32:52,749 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 [2023-02-17 08:32:52,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 08:32:52,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 13 conjunts are in the unsatisfiable core [2023-02-17 08:32:52,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 08:32:52,807 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 [2023-02-17 08:32:52,815 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-02-17 08:32:52,841 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-02-17 08:32:52,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 08:32:52,856 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 08:32:52,856 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 08:32:52,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [408950773] [2023-02-17 08:32:52,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [408950773] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 08:32:52,856 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 08:32:52,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-17 08:32:52,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437197168] [2023-02-17 08:32:52,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 08:32:52,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-17 08:32:52,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 08:32:52,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-17 08:32:52,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-02-17 08:32:52,857 INFO L87 Difference]: Start difference. First operand 74 states and 76 transitions. Second operand has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 7 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-17 08:32:54,897 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 [0] [2023-02-17 08:32:56,946 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-17 08:32:58,960 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-17 08:33:01,159 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-17 08:33:03,171 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-17 08:33:05,180 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-17 08:33:07,209 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-17 08:33:09,225 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-17 08:33:11,243 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-17 08:33:13,255 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-17 08:33:15,262 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-17 08:33:17,294 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-17 08:33:19,316 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-17 08:33:21,328 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-17 08:33:23,339 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-17 08:33:25,362 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-17 08:33:27,365 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-17 08:33:29,376 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-17 08:33:31,389 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-17 08:33:33,394 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-17 08:33:35,400 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-17 08:33:37,457 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-17 08:33:39,459 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-17 08:33:41,465 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-17 08:33:43,475 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-17 08:33:45,480 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-17 08:33:47,489 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-17 08:33:49,493 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-17 08:33:51,507 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-17 08:33:53,517 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-17 08:33:55,523 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-17 08:33:55,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 08:33:55,530 INFO L93 Difference]: Finished difference Result 93 states and 98 transitions. [2023-02-17 08:33:55,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-17 08:33:55,530 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 7 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2023-02-17 08:33:55,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 08:33:55,531 INFO L225 Difference]: With dead ends: 93 [2023-02-17 08:33:55,531 INFO L226 Difference]: Without dead ends: 93 [2023-02-17 08:33:55,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-02-17 08:33:55,532 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 30 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 3 mSolverCounterUnsat, 31 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 62.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 31 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 62.6s IncrementalHoareTripleChecker+Time [2023-02-17 08:33:55,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 189 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 208 Invalid, 31 Unknown, 0 Unchecked, 62.6s Time] [2023-02-17 08:33:55,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2023-02-17 08:33:55,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 74. [2023-02-17 08:33:55,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 44 states have (on average 1.5) internal successors, (66), 64 states have internal predecessors, (66), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2023-02-17 08:33:55,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 75 transitions. [2023-02-17 08:33:55,536 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 75 transitions. Word has length 13 [2023-02-17 08:33:55,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 08:33:55,536 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 75 transitions. [2023-02-17 08:33:55,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 7 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-17 08:33:55,537 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 75 transitions. [2023-02-17 08:33:55,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-17 08:33:55,537 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 08:33:55,537 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 08:33:55,545 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 [2023-02-17 08:33:55,741 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 [2023-02-17 08:33:55,741 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __ldv_list_addErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-17 08:33:55,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 08:33:55,742 INFO L85 PathProgramCache]: Analyzing trace with hash 594720773, now seen corresponding path program 1 times [2023-02-17 08:33:55,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 08:33:55,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [556312655] [2023-02-17 08:33:55,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 08:33:55,742 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 [2023-02-17 08:33:55,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 08:33:55,743 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) [2023-02-17 08:33:55,744 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 [2023-02-17 08:33:55,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 08:33:55,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-17 08:33:55,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 08:33:55,830 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 [2023-02-17 08:33:55,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 08:33:55,878 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 08:33:55,878 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 08:33:55,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [556312655] [2023-02-17 08:33:55,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [556312655] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 08:33:55,879 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 08:33:55,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-02-17 08:33:55,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616024180] [2023-02-17 08:33:55,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 08:33:55,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-17 08:33:55,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 08:33:55,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-17 08:33:55,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-02-17 08:33:55,881 INFO L87 Difference]: Start difference. First operand 74 states and 75 transitions. Second operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 6 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-17 08:33:56,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 08:33:56,142 INFO L93 Difference]: Finished difference Result 81 states and 84 transitions. [2023-02-17 08:33:56,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-17 08:33:56,143 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.5) internal successors, (12), 6 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2023-02-17 08:33:56,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 08:33:56,143 INFO L225 Difference]: With dead ends: 81 [2023-02-17 08:33:56,144 INFO L226 Difference]: Without dead ends: 81 [2023-02-17 08:33:56,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-02-17 08:33:56,144 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 40 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-17 08:33:56,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 307 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-17 08:33:56,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2023-02-17 08:33:56,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 72. [2023-02-17 08:33:56,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 44 states have (on average 1.4545454545454546) internal successors, (64), 62 states have internal predecessors, (64), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2023-02-17 08:33:56,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 73 transitions. [2023-02-17 08:33:56,147 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 73 transitions. Word has length 16 [2023-02-17 08:33:56,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 08:33:56,148 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 73 transitions. [2023-02-17 08:33:56,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.5) internal successors, (12), 6 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-17 08:33:56,148 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 73 transitions. [2023-02-17 08:33:56,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-17 08:33:56,148 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 08:33:56,148 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 08:33:56,160 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 [2023-02-17 08:33:56,349 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 [2023-02-17 08:33:56,349 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __ldv_list_addErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-17 08:33:56,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 08:33:56,349 INFO L85 PathProgramCache]: Analyzing trace with hash 594720774, now seen corresponding path program 1 times [2023-02-17 08:33:56,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 08:33:56,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1027084150] [2023-02-17 08:33:56,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 08:33:56,350 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 [2023-02-17 08:33:56,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 08:33:56,352 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) [2023-02-17 08:33:56,352 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 [2023-02-17 08:33:56,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 08:33:56,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 18 conjunts are in the unsatisfiable core [2023-02-17 08:33:56,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 08:33:56,430 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 [2023-02-17 08:33:56,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 08:33:56,497 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 08:33:56,498 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 08:33:56,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1027084150] [2023-02-17 08:33:56,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1027084150] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 08:33:56,498 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 08:33:56,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-02-17 08:33:56,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097023491] [2023-02-17 08:33:56,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 08:33:56,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-02-17 08:33:56,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 08:33:56,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-02-17 08:33:56,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-02-17 08:33:56,499 INFO L87 Difference]: Start difference. First operand 72 states and 73 transitions. Second operand has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 7 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-17 08:33:56,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 08:33:56,878 INFO L93 Difference]: Finished difference Result 82 states and 84 transitions. [2023-02-17 08:33:56,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-17 08:33:56,879 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 7 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2023-02-17 08:33:56,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 08:33:56,879 INFO L225 Difference]: With dead ends: 82 [2023-02-17 08:33:56,879 INFO L226 Difference]: Without dead ends: 82 [2023-02-17 08:33:56,880 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2023-02-17 08:33:56,881 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 43 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-17 08:33:56,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 392 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-17 08:33:56,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2023-02-17 08:33:56,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 70. [2023-02-17 08:33:56,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 44 states have (on average 1.4090909090909092) internal successors, (62), 60 states have internal predecessors, (62), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2023-02-17 08:33:56,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 71 transitions. [2023-02-17 08:33:56,884 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 71 transitions. Word has length 16 [2023-02-17 08:33:56,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 08:33:56,884 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 71 transitions. [2023-02-17 08:33:56,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 7 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-17 08:33:56,884 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 71 transitions. [2023-02-17 08:33:56,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-17 08:33:56,885 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 08:33:56,885 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 08:33:56,895 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 [2023-02-17 08:33:57,089 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 [2023-02-17 08:33:57,089 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __ldv_list_addErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-17 08:33:57,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 08:33:57,089 INFO L85 PathProgramCache]: Analyzing trace with hash 296014184, now seen corresponding path program 1 times [2023-02-17 08:33:57,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 08:33:57,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1190967246] [2023-02-17 08:33:57,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 08:33:57,090 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 [2023-02-17 08:33:57,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 08:33:57,091 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) [2023-02-17 08:33:57,092 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 [2023-02-17 08:33:57,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 08:33:57,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-17 08:33:57,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 08:33:57,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 08:33:57,176 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 08:33:57,176 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 08:33:57,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1190967246] [2023-02-17 08:33:57,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1190967246] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 08:33:57,177 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 08:33:57,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-17 08:33:57,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101439390] [2023-02-17 08:33:57,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 08:33:57,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-17 08:33:57,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 08:33:57,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-17 08:33:57,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-17 08:33:57,179 INFO L87 Difference]: Start difference. First operand 70 states and 71 transitions. Second operand has 5 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-17 08:33:57,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 08:33:57,307 INFO L93 Difference]: Finished difference Result 69 states and 70 transitions. [2023-02-17 08:33:57,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-17 08:33:57,308 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2023-02-17 08:33:57,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 08:33:57,308 INFO L225 Difference]: With dead ends: 69 [2023-02-17 08:33:57,308 INFO L226 Difference]: Without dead ends: 69 [2023-02-17 08:33:57,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-17 08:33:57,309 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 12 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 08:33:57,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 153 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 08:33:57,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2023-02-17 08:33:57,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2023-02-17 08:33:57,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 44 states have (on average 1.3863636363636365) internal successors, (61), 59 states have internal predecessors, (61), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2023-02-17 08:33:57,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 70 transitions. [2023-02-17 08:33:57,312 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 70 transitions. Word has length 18 [2023-02-17 08:33:57,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 08:33:57,312 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 70 transitions. [2023-02-17 08:33:57,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-17 08:33:57,312 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 70 transitions. [2023-02-17 08:33:57,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-17 08:33:57,312 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 08:33:57,323 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 08:33:57,335 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 [2023-02-17 08:33:57,523 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 [2023-02-17 08:33:57,523 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __ldv_list_addErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-17 08:33:57,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 08:33:57,524 INFO L85 PathProgramCache]: Analyzing trace with hash 296014185, now seen corresponding path program 1 times [2023-02-17 08:33:57,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 08:33:57,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [222109674] [2023-02-17 08:33:57,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 08:33:57,524 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 [2023-02-17 08:33:57,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 08:33:57,526 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) [2023-02-17 08:33:57,529 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 [2023-02-17 08:33:57,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 08:33:57,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2023-02-17 08:33:57,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 08:33:57,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 08:33:57,651 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 08:33:57,651 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 08:33:57,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [222109674] [2023-02-17 08:33:57,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [222109674] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 08:33:57,652 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 08:33:57,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-02-17 08:33:57,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157161529] [2023-02-17 08:33:57,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 08:33:57,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-17 08:33:57,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 08:33:57,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-17 08:33:57,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-02-17 08:33:57,653 INFO L87 Difference]: Start difference. First operand 69 states and 70 transitions. Second operand has 8 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-17 08:33:57,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 08:33:57,848 INFO L93 Difference]: Finished difference Result 68 states and 69 transitions. [2023-02-17 08:33:57,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-17 08:33:57,849 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2023-02-17 08:33:57,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 08:33:57,850 INFO L225 Difference]: With dead ends: 68 [2023-02-17 08:33:57,850 INFO L226 Difference]: Without dead ends: 68 [2023-02-17 08:33:57,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-02-17 08:33:57,850 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 36 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-17 08:33:57,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 243 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-17 08:33:57,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2023-02-17 08:33:57,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2023-02-17 08:33:57,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 44 states have (on average 1.3636363636363635) internal successors, (60), 58 states have internal predecessors, (60), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2023-02-17 08:33:57,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 69 transitions. [2023-02-17 08:33:57,853 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 69 transitions. Word has length 18 [2023-02-17 08:33:57,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 08:33:57,853 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 69 transitions. [2023-02-17 08:33:57,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-17 08:33:57,853 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 69 transitions. [2023-02-17 08:33:57,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-17 08:33:57,854 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 08:33:57,854 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 08:33:57,866 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 [2023-02-17 08:33:58,054 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 [2023-02-17 08:33:58,054 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_list_delErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-17 08:33:58,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 08:33:58,055 INFO L85 PathProgramCache]: Analyzing trace with hash -953601884, now seen corresponding path program 1 times [2023-02-17 08:33:58,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 08:33:58,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1812308563] [2023-02-17 08:33:58,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 08:33:58,055 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 [2023-02-17 08:33:58,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 08:33:58,057 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) [2023-02-17 08:33:58,057 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 [2023-02-17 08:33:58,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 08:33:58,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 14 conjunts are in the unsatisfiable core [2023-02-17 08:33:58,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 08:33:58,153 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 08:33:58,154 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 10 [2023-02-17 08:33:58,165 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 08:33:58,166 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 10 [2023-02-17 08:33:58,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 08:33:58,194 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 08:33:58,194 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 08:33:58,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1812308563] [2023-02-17 08:33:58,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1812308563] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 08:33:58,195 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 08:33:58,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-02-17 08:33:58,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885738637] [2023-02-17 08:33:58,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 08:33:58,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-17 08:33:58,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 08:33:58,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-17 08:33:58,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-02-17 08:33:58,202 INFO L87 Difference]: Start difference. First operand 68 states and 69 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-17 08:33:58,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 08:33:58,351 INFO L93 Difference]: Finished difference Result 74 states and 74 transitions. [2023-02-17 08:33:58,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-17 08:33:58,352 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2023-02-17 08:33:58,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 08:33:58,352 INFO L225 Difference]: With dead ends: 74 [2023-02-17 08:33:58,352 INFO L226 Difference]: Without dead ends: 74 [2023-02-17 08:33:58,353 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2023-02-17 08:33:58,353 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 33 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 08:33:58,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 199 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 08:33:58,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2023-02-17 08:33:58,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 70. [2023-02-17 08:33:58,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 46 states have (on average 1.3478260869565217) internal successors, (62), 60 states have internal predecessors, (62), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2023-02-17 08:33:58,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 71 transitions. [2023-02-17 08:33:58,356 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 71 transitions. Word has length 18 [2023-02-17 08:33:58,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 08:33:58,356 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 71 transitions. [2023-02-17 08:33:58,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-17 08:33:58,357 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 71 transitions. [2023-02-17 08:33:58,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-17 08:33:58,357 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 08:33:58,357 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 08:33:58,367 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 [2023-02-17 08:33:58,565 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 [2023-02-17 08:33:58,565 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-17 08:33:58,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 08:33:58,565 INFO L85 PathProgramCache]: Analyzing trace with hash -953703910, now seen corresponding path program 1 times [2023-02-17 08:33:58,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 08:33:58,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1953389554] [2023-02-17 08:33:58,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 08:33:58,566 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 [2023-02-17 08:33:58,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 08:33:58,567 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) [2023-02-17 08:33:58,605 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 [2023-02-17 08:33:58,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 08:33:58,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-17 08:33:58,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 08:33:58,663 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_entry_point_~#list_14~0#1.base_6| (_ BitVec 32))) (and (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_entry_point_~#list_14~0#1.base_6| (_ bv0 1))) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_entry_point_~#list_14~0#1.base_6|)))) is different from true [2023-02-17 08:33:58,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 08:33:58,665 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 08:33:58,665 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 08:33:58,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1953389554] [2023-02-17 08:33:58,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1953389554] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 08:33:58,665 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 08:33:58,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-17 08:33:58,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597003833] [2023-02-17 08:33:58,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 08:33:58,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-17 08:33:58,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 08:33:58,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-17 08:33:58,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=8, Unknown=1, NotChecked=4, Total=20 [2023-02-17 08:33:58,667 INFO L87 Difference]: Start difference. First operand 70 states and 71 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-17 08:33:58,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 08:33:58,838 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2023-02-17 08:33:58,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-17 08:33:58,839 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2023-02-17 08:33:58,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 08:33:58,840 INFO L225 Difference]: With dead ends: 73 [2023-02-17 08:33:58,840 INFO L226 Difference]: Without dead ends: 60 [2023-02-17 08:33:58,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=8, Unknown=1, NotChecked=4, Total=20 [2023-02-17 08:33:58,841 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 27 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 67 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-17 08:33:58,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 63 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 92 Invalid, 0 Unknown, 67 Unchecked, 0.2s Time] [2023-02-17 08:33:58,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-02-17 08:33:58,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2023-02-17 08:33:58,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 37 states have (on average 1.4054054054054055) internal successors, (52), 51 states have internal predecessors, (52), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-17 08:33:58,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 60 transitions. [2023-02-17 08:33:58,843 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 60 transitions. Word has length 18 [2023-02-17 08:33:58,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 08:33:58,843 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 60 transitions. [2023-02-17 08:33:58,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-17 08:33:58,843 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 60 transitions. [2023-02-17 08:33:58,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-02-17 08:33:58,843 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 08:33:58,843 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 08:33:58,859 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 (17)] Forceful destruction successful, exit code 0 [2023-02-17 08:33:59,053 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 [2023-02-17 08:33:59,053 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-17 08:33:59,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 08:33:59,054 INFO L85 PathProgramCache]: Analyzing trace with hash 783634007, now seen corresponding path program 1 times [2023-02-17 08:33:59,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 08:33:59,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1283988398] [2023-02-17 08:33:59,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 08:33:59,054 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 [2023-02-17 08:33:59,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 08:33:59,055 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) [2023-02-17 08:33:59,057 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 [2023-02-17 08:33:59,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 08:33:59,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-17 08:33:59,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 08:33:59,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 08:33:59,213 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 08:33:59,213 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 08:33:59,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1283988398] [2023-02-17 08:33:59,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1283988398] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 08:33:59,214 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 08:33:59,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-02-17 08:33:59,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123341462] [2023-02-17 08:33:59,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 08:33:59,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-17 08:33:59,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 08:33:59,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-17 08:33:59,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-02-17 08:33:59,217 INFO L87 Difference]: Start difference. First operand 60 states and 60 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-17 08:33:59,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 08:33:59,449 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2023-02-17 08:33:59,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-17 08:33:59,449 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 25 [2023-02-17 08:33:59,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 08:33:59,450 INFO L225 Difference]: With dead ends: 59 [2023-02-17 08:33:59,450 INFO L226 Difference]: Without dead ends: 59 [2023-02-17 08:33:59,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2023-02-17 08:33:59,451 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 85 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-17 08:33:59,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 133 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-17 08:33:59,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-02-17 08:33:59,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2023-02-17 08:33:59,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 37 states have (on average 1.3783783783783783) internal successors, (51), 50 states have internal predecessors, (51), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-17 08:33:59,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2023-02-17 08:33:59,453 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 25 [2023-02-17 08:33:59,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 08:33:59,453 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2023-02-17 08:33:59,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-17 08:33:59,454 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2023-02-17 08:33:59,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-02-17 08:33:59,454 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 08:33:59,454 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 08:33:59,468 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 (18)] Forceful destruction successful, exit code 0 [2023-02-17 08:33:59,654 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 [2023-02-17 08:33:59,655 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-17 08:33:59,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 08:33:59,655 INFO L85 PathProgramCache]: Analyzing trace with hash 783634008, now seen corresponding path program 1 times [2023-02-17 08:33:59,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 08:33:59,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [814524092] [2023-02-17 08:33:59,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 08:33:59,656 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 [2023-02-17 08:33:59,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 08:33:59,657 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) [2023-02-17 08:33:59,660 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 [2023-02-17 08:33:59,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 08:33:59,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 15 conjunts are in the unsatisfiable core [2023-02-17 08:33:59,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 08:33:59,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 08:33:59,787 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 08:33:59,787 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 08:33:59,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [814524092] [2023-02-17 08:33:59,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [814524092] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 08:33:59,787 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 08:33:59,788 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-17 08:33:59,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574276600] [2023-02-17 08:33:59,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 08:33:59,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-17 08:33:59,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 08:33:59,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-17 08:33:59,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-02-17 08:33:59,789 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-17 08:33:59,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 08:33:59,987 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions. [2023-02-17 08:33:59,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-17 08:33:59,988 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 25 [2023-02-17 08:33:59,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 08:33:59,989 INFO L225 Difference]: With dead ends: 58 [2023-02-17 08:33:59,989 INFO L226 Difference]: Without dead ends: 58 [2023-02-17 08:33:59,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-02-17 08:33:59,990 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 47 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-17 08:33:59,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 182 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-17 08:33:59,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2023-02-17 08:33:59,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2023-02-17 08:33:59,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 37 states have (on average 1.3513513513513513) internal successors, (50), 49 states have internal predecessors, (50), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-17 08:33:59,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 58 transitions. [2023-02-17 08:33:59,993 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 58 transitions. Word has length 25 [2023-02-17 08:33:59,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 08:33:59,994 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 58 transitions. [2023-02-17 08:33:59,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-17 08:33:59,994 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 58 transitions. [2023-02-17 08:33:59,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-02-17 08:33:59,995 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 08:33:59,996 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 08:34:00,008 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 [2023-02-17 08:34:00,206 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 [2023-02-17 08:34:00,206 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-17 08:34:00,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 08:34:00,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1453003897, now seen corresponding path program 1 times [2023-02-17 08:34:00,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 08:34:00,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [346114244] [2023-02-17 08:34:00,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 08:34:00,207 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 [2023-02-17 08:34:00,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 08:34:00,208 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) [2023-02-17 08:34:00,209 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 [2023-02-17 08:34:00,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 08:34:00,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 46 conjunts are in the unsatisfiable core [2023-02-17 08:34:00,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 08:34:00,338 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 [2023-02-17 08:34:00,427 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-17 08:34:00,432 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-17 08:34:00,549 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-02-17 08:34:00,553 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-02-17 08:34:00,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 08:34:00,621 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 08:34:00,621 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 08:34:00,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [346114244] [2023-02-17 08:34:00,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [346114244] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 08:34:00,621 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 08:34:00,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-02-17 08:34:00,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027599677] [2023-02-17 08:34:00,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 08:34:00,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-02-17 08:34:00,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 08:34:00,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-02-17 08:34:00,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2023-02-17 08:34:00,623 INFO L87 Difference]: Start difference. First operand 58 states and 58 transitions. Second operand has 16 states, 14 states have (on average 1.5) internal successors, (21), 13 states have internal predecessors, (21), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-17 08:34:01,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 08:34:01,550 INFO L93 Difference]: Finished difference Result 64 states and 65 transitions. [2023-02-17 08:34:01,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-02-17 08:34:01,550 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 1.5) internal successors, (21), 13 states have internal predecessors, (21), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 27 [2023-02-17 08:34:01,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 08:34:01,551 INFO L225 Difference]: With dead ends: 64 [2023-02-17 08:34:01,551 INFO L226 Difference]: Without dead ends: 64 [2023-02-17 08:34:01,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=102, Invalid=498, Unknown=0, NotChecked=0, Total=600 [2023-02-17 08:34:01,552 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 85 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-02-17 08:34:01,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 263 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 416 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-02-17 08:34:01,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-02-17 08:34:01,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 57. [2023-02-17 08:34:01,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 37 states have (on average 1.3243243243243243) internal successors, (49), 48 states have internal predecessors, (49), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-17 08:34:01,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2023-02-17 08:34:01,554 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 27 [2023-02-17 08:34:01,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 08:34:01,554 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2023-02-17 08:34:01,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 1.5) internal successors, (21), 13 states have internal predecessors, (21), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-17 08:34:01,555 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2023-02-17 08:34:01,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-02-17 08:34:01,555 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 08:34:01,555 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 08:34:01,564 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 [2023-02-17 08:34:01,755 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 [2023-02-17 08:34:01,756 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-17 08:34:01,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 08:34:01,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1453003896, now seen corresponding path program 1 times [2023-02-17 08:34:01,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 08:34:01,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1825037956] [2023-02-17 08:34:01,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 08:34:01,757 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 [2023-02-17 08:34:01,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 08:34:01,758 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) [2023-02-17 08:34:01,763 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 [2023-02-17 08:34:01,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 08:34:01,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 31 conjunts are in the unsatisfiable core [2023-02-17 08:34:01,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 08:34:01,869 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 [2023-02-17 08:34:01,922 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-17 08:34:02,001 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-02-17 08:34:02,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 08:34:02,043 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 08:34:02,043 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 08:34:02,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1825037956] [2023-02-17 08:34:02,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1825037956] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 08:34:02,043 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 08:34:02,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-02-17 08:34:02,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110789951] [2023-02-17 08:34:02,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 08:34:02,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-02-17 08:34:02,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 08:34:02,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-02-17 08:34:02,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2023-02-17 08:34:02,045 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand has 15 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 12 states have internal predecessors, (21), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-17 08:34:02,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 08:34:02,742 INFO L93 Difference]: Finished difference Result 60 states and 62 transitions. [2023-02-17 08:34:02,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-02-17 08:34:02,743 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 12 states have internal predecessors, (21), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 27 [2023-02-17 08:34:02,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 08:34:02,743 INFO L225 Difference]: With dead ends: 60 [2023-02-17 08:34:02,743 INFO L226 Difference]: Without dead ends: 60 [2023-02-17 08:34:02,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=100, Invalid=406, Unknown=0, NotChecked=0, Total=506 [2023-02-17 08:34:02,744 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 82 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-02-17 08:34:02,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 212 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 366 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-02-17 08:34:02,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-02-17 08:34:02,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 56. [2023-02-17 08:34:02,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 37 states have (on average 1.2972972972972974) internal successors, (48), 47 states have internal predecessors, (48), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-17 08:34:02,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 56 transitions. [2023-02-17 08:34:02,747 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 56 transitions. Word has length 27 [2023-02-17 08:34:02,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 08:34:02,747 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 56 transitions. [2023-02-17 08:34:02,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 12 states have internal predecessors, (21), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-17 08:34:02,747 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 56 transitions. [2023-02-17 08:34:02,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-02-17 08:34:02,748 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 08:34:02,748 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 08:34:02,760 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 [2023-02-17 08:34:02,948 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 [2023-02-17 08:34:02,948 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_list_delErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-17 08:34:02,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 08:34:02,949 INFO L85 PathProgramCache]: Analyzing trace with hash -2144913277, now seen corresponding path program 1 times [2023-02-17 08:34:02,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 08:34:02,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1072707654] [2023-02-17 08:34:02,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 08:34:02,949 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 [2023-02-17 08:34:02,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 08:34:02,951 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) [2023-02-17 08:34:02,954 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 [2023-02-17 08:34:03,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 08:34:03,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 33 conjunts are in the unsatisfiable core [2023-02-17 08:34:03,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 08:34:03,065 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 [2023-02-17 08:34:03,120 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-17 08:34:03,203 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-02-17 08:34:03,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 08:34:03,292 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 08:34:03,293 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 08:34:03,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1072707654] [2023-02-17 08:34:03,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1072707654] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 08:34:03,293 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 08:34:03,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-02-17 08:34:03,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68987597] [2023-02-17 08:34:03,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 08:34:03,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-02-17 08:34:03,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 08:34:03,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-02-17 08:34:03,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2023-02-17 08:34:03,295 INFO L87 Difference]: Start difference. First operand 56 states and 56 transitions. Second operand has 17 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 13 states have internal predecessors, (25), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-17 08:34:04,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 08:34:04,196 INFO L93 Difference]: Finished difference Result 74 states and 75 transitions. [2023-02-17 08:34:04,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-02-17 08:34:04,197 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 13 states have internal predecessors, (25), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 32 [2023-02-17 08:34:04,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 08:34:04,197 INFO L225 Difference]: With dead ends: 74 [2023-02-17 08:34:04,198 INFO L226 Difference]: Without dead ends: 74 [2023-02-17 08:34:04,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=111, Invalid=539, Unknown=0, NotChecked=0, Total=650 [2023-02-17 08:34:04,199 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 99 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-02-17 08:34:04,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 220 Invalid, 495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 478 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-02-17 08:34:04,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2023-02-17 08:34:04,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 66. [2023-02-17 08:34:04,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 46 states have (on average 1.3695652173913044) internal successors, (63), 56 states have internal predecessors, (63), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-17 08:34:04,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 73 transitions. [2023-02-17 08:34:04,202 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 73 transitions. Word has length 32 [2023-02-17 08:34:04,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 08:34:04,202 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 73 transitions. [2023-02-17 08:34:04,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 13 states have internal predecessors, (25), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-17 08:34:04,202 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 73 transitions. [2023-02-17 08:34:04,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-02-17 08:34:04,203 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 08:34:04,203 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 08:34:04,213 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 (22)] Forceful destruction successful, exit code 0 [2023-02-17 08:34:04,413 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 [2023-02-17 08:34:04,413 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_list_delErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-17 08:34:04,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 08:34:04,414 INFO L85 PathProgramCache]: Analyzing trace with hash -2144913276, now seen corresponding path program 1 times [2023-02-17 08:34:04,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 08:34:04,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1977011593] [2023-02-17 08:34:04,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 08:34:04,414 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 [2023-02-17 08:34:04,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 08:34:04,415 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) [2023-02-17 08:34:04,416 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 [2023-02-17 08:34:04,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 08:34:04,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 50 conjunts are in the unsatisfiable core [2023-02-17 08:34:04,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 08:34:04,533 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 [2023-02-17 08:34:04,610 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-17 08:34:04,613 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-17 08:34:04,721 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-02-17 08:34:04,722 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-02-17 08:34:04,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 08:34:04,835 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 08:34:04,835 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 08:34:04,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1977011593] [2023-02-17 08:34:04,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1977011593] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 08:34:04,835 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 08:34:04,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-02-17 08:34:04,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295821365] [2023-02-17 08:34:04,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 08:34:04,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-02-17 08:34:04,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 08:34:04,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-02-17 08:34:04,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2023-02-17 08:34:04,836 INFO L87 Difference]: Start difference. First operand 66 states and 73 transitions. Second operand has 18 states, 16 states have (on average 1.5625) internal successors, (25), 14 states have internal predecessors, (25), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-17 08:34:05,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 08:34:05,865 INFO L93 Difference]: Finished difference Result 75 states and 75 transitions. [2023-02-17 08:34:05,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-02-17 08:34:05,867 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 1.5625) internal successors, (25), 14 states have internal predecessors, (25), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 32 [2023-02-17 08:34:05,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 08:34:05,868 INFO L225 Difference]: With dead ends: 75 [2023-02-17 08:34:05,868 INFO L226 Difference]: Without dead ends: 75 [2023-02-17 08:34:05,868 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=113, Invalid=643, Unknown=0, NotChecked=0, Total=756 [2023-02-17 08:34:05,869 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 106 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 472 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-02-17 08:34:05,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 263 Invalid, 479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 472 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-02-17 08:34:05,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2023-02-17 08:34:05,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 66. [2023-02-17 08:34:05,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 46 states have (on average 1.326086956521739) internal successors, (61), 56 states have internal predecessors, (61), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-17 08:34:05,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 71 transitions. [2023-02-17 08:34:05,871 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 71 transitions. Word has length 32 [2023-02-17 08:34:05,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 08:34:05,872 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 71 transitions. [2023-02-17 08:34:05,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 1.5625) internal successors, (25), 14 states have internal predecessors, (25), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-17 08:34:05,872 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 71 transitions. [2023-02-17 08:34:05,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-02-17 08:34:05,872 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 08:34:05,872 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 08:34:05,882 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 (23)] Forceful destruction successful, exit code 0 [2023-02-17 08:34:06,082 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 [2023-02-17 08:34:06,082 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-17 08:34:06,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 08:34:06,083 INFO L85 PathProgramCache]: Analyzing trace with hash -2145015303, now seen corresponding path program 1 times [2023-02-17 08:34:06,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 08:34:06,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1300838974] [2023-02-17 08:34:06,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 08:34:06,083 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 [2023-02-17 08:34:06,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 08:34:06,084 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) [2023-02-17 08:34:06,085 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 [2023-02-17 08:34:06,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 08:34:06,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 34 conjunts are in the unsatisfiable core [2023-02-17 08:34:06,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 08:34:06,181 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 [2023-02-17 08:34:06,192 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 08:34:06,192 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2023-02-17 08:34:06,233 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-17 08:34:06,297 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2023-02-17 08:34:06,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 08:34:06,332 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 08:34:06,332 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 08:34:06,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1300838974] [2023-02-17 08:34:06,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1300838974] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 08:34:06,333 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 08:34:06,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-02-17 08:34:06,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082054833] [2023-02-17 08:34:06,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 08:34:06,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-02-17 08:34:06,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 08:34:06,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-02-17 08:34:06,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2023-02-17 08:34:06,335 INFO L87 Difference]: Start difference. First operand 66 states and 71 transitions. Second operand has 15 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 13 states have internal predecessors, (26), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-17 08:34:07,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 08:34:07,000 INFO L93 Difference]: Finished difference Result 67 states and 71 transitions. [2023-02-17 08:34:07,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-02-17 08:34:07,001 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 13 states have internal predecessors, (26), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 32 [2023-02-17 08:34:07,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 08:34:07,001 INFO L225 Difference]: With dead ends: 67 [2023-02-17 08:34:07,001 INFO L226 Difference]: Without dead ends: 67 [2023-02-17 08:34:07,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=474, Unknown=0, NotChecked=0, Total=552 [2023-02-17 08:34:07,002 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 55 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 542 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-02-17 08:34:07,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 158 Invalid, 550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 542 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-02-17 08:34:07,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2023-02-17 08:34:07,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 66. [2023-02-17 08:34:07,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 46 states have (on average 1.3043478260869565) internal successors, (60), 56 states have internal predecessors, (60), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-17 08:34:07,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 70 transitions. [2023-02-17 08:34:07,004 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 70 transitions. Word has length 32 [2023-02-17 08:34:07,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 08:34:07,005 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 70 transitions. [2023-02-17 08:34:07,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 13 states have internal predecessors, (26), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-17 08:34:07,005 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2023-02-17 08:34:07,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-02-17 08:34:07,005 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 08:34:07,005 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 08:34:07,014 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 (24)] Forceful destruction successful, exit code 0 [2023-02-17 08:34:07,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /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 [2023-02-17 08:34:07,214 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_list_delErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-02-17 08:34:07,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 08:34:07,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1412027647, now seen corresponding path program 1 times [2023-02-17 08:34:07,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 08:34:07,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [95480521] [2023-02-17 08:34:07,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 08:34:07,215 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 [2023-02-17 08:34:07,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 08:34:07,216 INFO L229 MonitoredProcess]: Starting monitored process 25 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) [2023-02-17 08:34:07,217 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 (25)] Waiting until timeout for monitored process [2023-02-17 08:34:07,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 08:34:07,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 70 conjunts are in the unsatisfiable core [2023-02-17 08:34:07,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 08:34:07,382 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 08:34:07,383 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 28 [2023-02-17 08:34:07,392 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 08:34:07,392 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 27 [2023-02-17 08:34:07,461 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 08:34:07,462 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 46 [2023-02-17 08:34:07,692 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-17 08:34:07,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 08:34:07,741 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-02-17 08:34:07,745 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-17 08:34:07,750 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 08:34:07,750 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 42 [2023-02-17 08:34:07,873 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 08:34:07,873 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 67 treesize of output 87 [2023-02-17 08:34:08,038 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 60 [2023-02-17 08:34:08,984 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 08:34:08,985 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 17 select indices, 17 select index equivalence classes, 0 disjoint index pairs (out of 136 index pairs), introduced 25 new quantified variables, introduced 136 case distinctions, treesize of input 370 treesize of output 1618