./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/array-memsafety/diff-alloca-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 7e1ff0e6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/array-memsafety/diff-alloca-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5cc33a4b6801f9f06dbbb17ff694aba4439c76c6a2b62ec290c2132cc01ea0fe --- Real Ultimate output --- This is Ultimate 0.2.2-?-7e1ff0e [2023-02-15 00:56:31,020 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 00:56:31,021 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 00:56:31,043 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 00:56:31,045 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 00:56:31,048 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 00:56:31,050 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 00:56:31,053 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 00:56:31,055 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 00:56:31,059 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 00:56:31,060 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 00:56:31,063 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 00:56:31,063 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 00:56:31,067 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 00:56:31,068 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 00:56:31,070 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 00:56:31,071 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 00:56:31,072 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 00:56:31,073 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 00:56:31,077 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 00:56:31,078 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 00:56:31,079 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 00:56:31,080 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 00:56:31,081 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 00:56:31,085 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 00:56:31,085 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 00:56:31,085 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 00:56:31,086 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 00:56:31,087 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 00:56:31,087 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 00:56:31,088 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 00:56:31,088 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 00:56:31,090 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 00:56:31,090 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 00:56:31,091 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 00:56:31,091 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 00:56:31,091 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 00:56:31,091 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 00:56:31,092 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 00:56:31,092 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 00:56:31,093 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 00:56:31,094 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-02-15 00:56:31,119 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 00:56:31,121 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 00:56:31,122 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 00:56:31,122 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 00:56:31,123 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 00:56:31,123 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 00:56:31,123 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 00:56:31,123 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 00:56:31,123 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 00:56:31,124 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 00:56:31,124 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-15 00:56:31,124 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-15 00:56:31,125 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 00:56:31,125 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-15 00:56:31,125 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 00:56:31,125 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-02-15 00:56:31,125 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-02-15 00:56:31,125 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-02-15 00:56:31,126 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 00:56:31,126 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-15 00:56:31,126 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-15 00:56:31,126 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 00:56:31,126 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 00:56:31,126 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 00:56:31,126 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 00:56:31,127 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 00:56:31,127 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 00:56:31,127 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 00:56:31,127 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-15 00:56:31,127 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-15 00:56:31,127 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 00:56:31,128 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 00:56:31,128 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 00:56:31,128 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 00:56:31,128 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5cc33a4b6801f9f06dbbb17ff694aba4439c76c6a2b62ec290c2132cc01ea0fe [2023-02-15 00:56:31,339 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 00:56:31,361 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 00:56:31,363 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 00:56:31,364 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 00:56:31,365 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 00:56:31,365 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/diff-alloca-2.i [2023-02-15 00:56:32,564 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 00:56:32,763 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 00:56:32,765 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/diff-alloca-2.i [2023-02-15 00:56:32,777 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abd6c04e5/c31d2867b95e46dd82b81dc59e0d499c/FLAG421e8430e [2023-02-15 00:56:32,790 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abd6c04e5/c31d2867b95e46dd82b81dc59e0d499c [2023-02-15 00:56:32,792 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 00:56:32,793 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 00:56:32,793 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 00:56:32,794 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 00:56:32,796 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 00:56:32,796 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 12:56:32" (1/1) ... [2023-02-15 00:56:32,798 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@459591f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:56:32, skipping insertion in model container [2023-02-15 00:56:32,798 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 12:56:32" (1/1) ... [2023-02-15 00:56:32,803 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 00:56:32,834 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 00:56:33,055 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 00:56:33,065 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2023-02-15 00:56:33,066 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2842ad1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:56:33, skipping insertion in model container [2023-02-15 00:56:33,066 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 00:56:33,067 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-02-15 00:56:33,069 INFO L158 Benchmark]: Toolchain (without parser) took 275.21ms. Allocated memory is still 245.4MB. Free memory was 196.9MB in the beginning and 185.1MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-15 00:56:33,069 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 142.6MB. Free memory is still 87.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 00:56:33,070 INFO L158 Benchmark]: CACSL2BoogieTranslator took 273.49ms. Allocated memory is still 245.4MB. Free memory was 196.2MB in the beginning and 185.1MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-15 00:56:33,071 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 142.6MB. Free memory is still 87.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 273.49ms. Allocated memory is still 245.4MB. Free memory was 196.2MB in the beginning and 185.1MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 545]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/array-memsafety/diff-alloca-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5cc33a4b6801f9f06dbbb17ff694aba4439c76c6a2b62ec290c2132cc01ea0fe --- Real Ultimate output --- This is Ultimate 0.2.2-?-7e1ff0e [2023-02-15 00:56:35,073 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 00:56:35,075 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 00:56:35,096 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 00:56:35,097 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 00:56:35,098 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 00:56:35,099 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 00:56:35,100 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 00:56:35,101 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 00:56:35,102 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 00:56:35,103 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 00:56:35,104 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 00:56:35,104 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 00:56:35,105 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 00:56:35,106 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 00:56:35,113 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 00:56:35,114 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 00:56:35,114 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 00:56:35,116 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 00:56:35,117 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 00:56:35,118 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 00:56:35,119 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 00:56:35,120 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 00:56:35,121 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 00:56:35,124 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 00:56:35,124 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 00:56:35,124 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 00:56:35,125 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 00:56:35,125 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 00:56:35,126 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 00:56:35,126 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 00:56:35,127 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 00:56:35,128 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 00:56:35,129 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 00:56:35,130 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 00:56:35,131 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 00:56:35,132 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 00:56:35,132 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 00:56:35,132 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 00:56:35,133 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 00:56:35,133 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 00:56:35,134 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-02-15 00:56:35,163 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 00:56:35,164 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 00:56:35,165 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 00:56:35,165 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 00:56:35,166 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 00:56:35,166 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 00:56:35,166 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 00:56:35,166 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 00:56:35,167 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 00:56:35,167 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 00:56:35,168 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-15 00:56:35,168 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-15 00:56:35,168 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 00:56:35,168 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-15 00:56:35,168 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 00:56:35,168 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-02-15 00:56:35,168 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-02-15 00:56:35,169 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-02-15 00:56:35,169 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 00:56:35,169 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-15 00:56:35,169 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-02-15 00:56:35,169 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-02-15 00:56:35,169 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-15 00:56:35,169 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 00:56:35,170 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 00:56:35,170 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 00:56:35,170 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 00:56:35,170 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 00:56:35,170 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 00:56:35,170 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 00:56:35,171 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-02-15 00:56:35,171 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-02-15 00:56:35,171 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 00:56:35,171 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 00:56:35,171 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 00:56:35,171 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-02-15 00:56:35,171 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 00:56:35,172 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5cc33a4b6801f9f06dbbb17ff694aba4439c76c6a2b62ec290c2132cc01ea0fe [2023-02-15 00:56:35,452 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 00:56:35,481 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 00:56:35,483 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 00:56:35,484 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 00:56:35,485 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 00:56:35,487 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/diff-alloca-2.i [2023-02-15 00:56:36,618 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 00:56:36,799 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 00:56:36,799 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/diff-alloca-2.i [2023-02-15 00:56:36,819 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc4732770/3623bda9478e4684b3c4efb55c9014ad/FLAG6dc8c09df [2023-02-15 00:56:37,166 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc4732770/3623bda9478e4684b3c4efb55c9014ad [2023-02-15 00:56:37,167 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 00:56:37,169 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 00:56:37,171 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 00:56:37,172 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 00:56:37,174 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 00:56:37,174 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 12:56:37" (1/1) ... [2023-02-15 00:56:37,177 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@206efe60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:56:37, skipping insertion in model container [2023-02-15 00:56:37,177 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 12:56:37" (1/1) ... [2023-02-15 00:56:37,182 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 00:56:37,221 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 00:56:37,451 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 00:56:37,464 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-02-15 00:56:37,474 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 00:56:37,525 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 00:56:37,530 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 00:56:37,569 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 00:56:37,592 INFO L208 MainTranslator]: Completed translation [2023-02-15 00:56:37,592 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:56:37 WrapperNode [2023-02-15 00:56:37,592 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 00:56:37,593 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 00:56:37,593 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 00:56:37,593 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 00:56:37,598 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:56:37" (1/1) ... [2023-02-15 00:56:37,614 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:56:37" (1/1) ... [2023-02-15 00:56:37,651 INFO L138 Inliner]: procedures = 117, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 96 [2023-02-15 00:56:37,652 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 00:56:37,652 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 00:56:37,653 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 00:56:37,653 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 00:56:37,664 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:56:37" (1/1) ... [2023-02-15 00:56:37,664 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:56:37" (1/1) ... [2023-02-15 00:56:37,676 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:56:37" (1/1) ... [2023-02-15 00:56:37,678 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:56:37" (1/1) ... [2023-02-15 00:56:37,694 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:56:37" (1/1) ... [2023-02-15 00:56:37,705 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:56:37" (1/1) ... [2023-02-15 00:56:37,710 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:56:37" (1/1) ... [2023-02-15 00:56:37,712 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:56:37" (1/1) ... [2023-02-15 00:56:37,721 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 00:56:37,722 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 00:56:37,724 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 00:56:37,724 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 00:56:37,724 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:56:37" (1/1) ... [2023-02-15 00:56:37,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 00:56:37,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 00:56:37,758 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-15 00:56:37,778 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-15 00:56:37,793 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-02-15 00:56:37,793 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-15 00:56:37,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-15 00:56:37,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-02-15 00:56:37,797 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 00:56:37,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 00:56:37,961 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 00:56:37,962 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 00:56:38,284 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 00:56:38,288 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 00:56:38,288 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2023-02-15 00:56:38,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 12:56:38 BoogieIcfgContainer [2023-02-15 00:56:38,289 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 00:56:38,291 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-15 00:56:38,291 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-15 00:56:38,293 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-15 00:56:38,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 12:56:37" (1/3) ... [2023-02-15 00:56:38,294 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44d921bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 12:56:38, skipping insertion in model container [2023-02-15 00:56:38,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:56:37" (2/3) ... [2023-02-15 00:56:38,294 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44d921bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 12:56:38, skipping insertion in model container [2023-02-15 00:56:38,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 12:56:38" (3/3) ... [2023-02-15 00:56:38,297 INFO L112 eAbstractionObserver]: Analyzing ICFG diff-alloca-2.i [2023-02-15 00:56:38,311 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-15 00:56:38,311 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2023-02-15 00:56:38,340 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-15 00:56:38,344 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;@1ca4e0de, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-15 00:56:38,345 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-02-15 00:56:38,348 INFO L276 IsEmpty]: Start isEmpty. Operand has 42 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 41 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:56:38,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-02-15 00:56:38,352 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 00:56:38,353 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-02-15 00:56:38,353 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-02-15 00:56:38,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 00:56:38,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1805029096, now seen corresponding path program 1 times [2023-02-15 00:56:38,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 00:56:38,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [856294287] [2023-02-15 00:56:38,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 00:56:38,369 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 00:56:38,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 00:56:38,373 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 00:56:38,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-02-15 00:56:38,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 00:56:38,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-15 00:56:38,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 00:56:38,572 INFO L321 Elim1Store]: treesize reduction 46, result has 29.2 percent of original size [2023-02-15 00:56:38,573 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 3 case distinctions, treesize of input 22 treesize of output 33 [2023-02-15 00:56:38,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 00:56:38,602 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 00:56:38,602 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 00:56:38,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [856294287] [2023-02-15 00:56:38,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [856294287] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 00:56:38,604 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 00:56:38,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-15 00:56:38,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130472117] [2023-02-15 00:56:38,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 00:56:38,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 00:56:38,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 00:56:38,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 00:56:38,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 00:56:38,642 INFO L87 Difference]: Start difference. First operand has 42 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 41 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:56:38,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 00:56:38,720 INFO L93 Difference]: Finished difference Result 41 states and 48 transitions. [2023-02-15 00:56:38,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 00:56:38,722 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-02-15 00:56:38,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 00:56:38,728 INFO L225 Difference]: With dead ends: 41 [2023-02-15 00:56:38,728 INFO L226 Difference]: Without dead ends: 39 [2023-02-15 00:56:38,729 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 00:56:38,732 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 36 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 00:56:38,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 39 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 00:56:38,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-02-15 00:56:38,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2023-02-15 00:56:38,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 27 states have (on average 1.7037037037037037) internal successors, (46), 38 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:56:38,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 46 transitions. [2023-02-15 00:56:38,754 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 46 transitions. Word has length 7 [2023-02-15 00:56:38,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 00:56:38,755 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 46 transitions. [2023-02-15 00:56:38,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:56:38,755 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 46 transitions. [2023-02-15 00:56:38,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-02-15 00:56:38,755 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 00:56:38,756 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-02-15 00:56:38,768 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-02-15 00:56:38,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 00:56:38,968 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-02-15 00:56:38,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 00:56:38,969 INFO L85 PathProgramCache]: Analyzing trace with hash 1805029097, now seen corresponding path program 1 times [2023-02-15 00:56:38,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 00:56:38,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1179743154] [2023-02-15 00:56:38,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 00:56:38,970 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 00:56:38,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 00:56:38,973 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 00:56:38,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-02-15 00:56:39,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 00:56:39,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 12 conjunts are in the unsatisfiable core [2023-02-15 00:56:39,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 00:56:39,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 00:56:39,059 INFO L321 Elim1Store]: treesize reduction 24, result has 38.5 percent of original size [2023-02-15 00:56:39,059 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 20 [2023-02-15 00:56:39,066 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 10 treesize of output 8 [2023-02-15 00:56:39,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 00:56:39,097 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 00:56:39,097 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 00:56:39,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1179743154] [2023-02-15 00:56:39,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1179743154] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 00:56:39,098 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 00:56:39,098 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 00:56:39,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927069704] [2023-02-15 00:56:39,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 00:56:39,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-15 00:56:39,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 00:56:39,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-15 00:56:39,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-15 00:56:39,100 INFO L87 Difference]: Start difference. First operand 39 states and 46 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:56:39,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 00:56:39,241 INFO L93 Difference]: Finished difference Result 79 states and 92 transitions. [2023-02-15 00:56:39,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-15 00:56:39,242 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-02-15 00:56:39,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 00:56:39,243 INFO L225 Difference]: With dead ends: 79 [2023-02-15 00:56:39,243 INFO L226 Difference]: Without dead ends: 79 [2023-02-15 00:56:39,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-15 00:56:39,244 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 47 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 00:56:39,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 165 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 00:56:39,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2023-02-15 00:56:39,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 43. [2023-02-15 00:56:39,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 31 states have (on average 1.6451612903225807) internal successors, (51), 42 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:56:39,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 51 transitions. [2023-02-15 00:56:39,257 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 51 transitions. Word has length 7 [2023-02-15 00:56:39,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 00:56:39,257 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 51 transitions. [2023-02-15 00:56:39,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:56:39,258 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 51 transitions. [2023-02-15 00:56:39,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-02-15 00:56:39,258 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 00:56:39,258 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-02-15 00:56:39,307 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 [2023-02-15 00:56:39,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 00:56:39,466 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-02-15 00:56:39,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 00:56:39,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1806876139, now seen corresponding path program 1 times [2023-02-15 00:56:39,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 00:56:39,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [365311184] [2023-02-15 00:56:39,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 00:56:39,469 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 00:56:39,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 00:56:39,482 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 00:56:39,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-02-15 00:56:39,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 00:56:39,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 13 conjunts are in the unsatisfiable core [2023-02-15 00:56:39,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 00:56:39,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 00:56:39,595 INFO L321 Elim1Store]: treesize reduction 28, result has 37.8 percent of original size [2023-02-15 00:56:39,595 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 24 [2023-02-15 00:56:39,603 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 10 treesize of output 8 [2023-02-15 00:56:39,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 00:56:39,647 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 00:56:39,647 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 00:56:39,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [365311184] [2023-02-15 00:56:39,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [365311184] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 00:56:39,648 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 00:56:39,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 00:56:39,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501127546] [2023-02-15 00:56:39,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 00:56:39,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-15 00:56:39,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 00:56:39,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-15 00:56:39,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-15 00:56:39,649 INFO L87 Difference]: Start difference. First operand 43 states and 51 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:56:39,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 00:56:39,741 INFO L93 Difference]: Finished difference Result 47 states and 55 transitions. [2023-02-15 00:56:39,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-15 00:56:39,742 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-02-15 00:56:39,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 00:56:39,742 INFO L225 Difference]: With dead ends: 47 [2023-02-15 00:56:39,742 INFO L226 Difference]: Without dead ends: 47 [2023-02-15 00:56:39,743 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-15 00:56:39,743 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 47 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 00:56:39,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 69 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 00:56:39,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2023-02-15 00:56:39,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 41. [2023-02-15 00:56:39,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 29 states have (on average 1.6551724137931034) internal successors, (48), 40 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:56:39,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2023-02-15 00:56:39,747 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 7 [2023-02-15 00:56:39,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 00:56:39,747 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2023-02-15 00:56:39,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:56:39,747 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2023-02-15 00:56:39,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-02-15 00:56:39,748 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 00:56:39,748 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 00:56:39,772 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 [2023-02-15 00:56:39,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 00:56:39,956 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-02-15 00:56:39,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 00:56:39,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1906083540, now seen corresponding path program 1 times [2023-02-15 00:56:39,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 00:56:39,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [907848037] [2023-02-15 00:56:39,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 00:56:39,957 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 00:56:39,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 00:56:39,971 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 00:56:39,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-02-15 00:56:40,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 00:56:40,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-15 00:56:40,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 00:56:40,049 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 00:56:40,049 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 00:56:40,089 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 00:56:40,089 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 00:56:40,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [907848037] [2023-02-15 00:56:40,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [907848037] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 00:56:40,090 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 00:56:40,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-02-15 00:56:40,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912578915] [2023-02-15 00:56:40,090 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 00:56:40,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-15 00:56:40,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 00:56:40,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-15 00:56:40,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-02-15 00:56:40,091 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:56:40,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 00:56:40,148 INFO L93 Difference]: Finished difference Result 77 states and 89 transitions. [2023-02-15 00:56:40,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 00:56:40,149 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-02-15 00:56:40,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 00:56:40,150 INFO L225 Difference]: With dead ends: 77 [2023-02-15 00:56:40,150 INFO L226 Difference]: Without dead ends: 77 [2023-02-15 00:56:40,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-02-15 00:56:40,150 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 69 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 00:56:40,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 187 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 00:56:40,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2023-02-15 00:56:40,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 48. [2023-02-15 00:56:40,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 36 states have (on average 1.5555555555555556) internal successors, (56), 47 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:56:40,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2023-02-15 00:56:40,154 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 11 [2023-02-15 00:56:40,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 00:56:40,155 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2023-02-15 00:56:40,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:56:40,155 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2023-02-15 00:56:40,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-02-15 00:56:40,155 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 00:56:40,156 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 00:56:40,165 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 [2023-02-15 00:56:40,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 00:56:40,363 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-02-15 00:56:40,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 00:56:40,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1226025170, now seen corresponding path program 1 times [2023-02-15 00:56:40,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 00:56:40,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2067888698] [2023-02-15 00:56:40,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 00:56:40,364 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 00:56:40,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 00:56:40,365 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 00:56:40,367 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-02-15 00:56:40,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 00:56:40,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 16 conjunts are in the unsatisfiable core [2023-02-15 00:56:40,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 00:56:40,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 00:56:40,462 INFO L321 Elim1Store]: treesize reduction 28, result has 37.8 percent of original size [2023-02-15 00:56:40,462 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 24 [2023-02-15 00:56:40,470 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 10 treesize of output 8 [2023-02-15 00:56:40,592 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 00:56:40,592 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 00:56:40,889 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 00:56:40,930 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 00:56:40,930 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 00:56:40,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2067888698] [2023-02-15 00:56:40,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2067888698] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 00:56:40,930 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 00:56:40,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2023-02-15 00:56:40,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057124738] [2023-02-15 00:56:40,930 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 00:56:40,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-02-15 00:56:40,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 00:56:40,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-15 00:56:40,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-02-15 00:56:40,931 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand has 11 states, 10 states have (on average 2.0) internal successors, (20), 11 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:56:41,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 00:56:41,584 INFO L93 Difference]: Finished difference Result 118 states and 137 transitions. [2023-02-15 00:56:41,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-15 00:56:41,585 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.0) internal successors, (20), 11 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-02-15 00:56:41,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 00:56:41,586 INFO L225 Difference]: With dead ends: 118 [2023-02-15 00:56:41,586 INFO L226 Difference]: Without dead ends: 118 [2023-02-15 00:56:41,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2023-02-15 00:56:41,587 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 371 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-15 00:56:41,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [371 Valid, 160 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-15 00:56:41,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2023-02-15 00:56:41,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 60. [2023-02-15 00:56:41,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 48 states have (on average 1.4791666666666667) internal successors, (71), 59 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:56:41,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 71 transitions. [2023-02-15 00:56:41,590 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 71 transitions. Word has length 11 [2023-02-15 00:56:41,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 00:56:41,591 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 71 transitions. [2023-02-15 00:56:41,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.0) internal successors, (20), 11 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:56:41,591 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 71 transitions. [2023-02-15 00:56:41,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-02-15 00:56:41,591 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 00:56:41,591 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 00:56:41,609 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-02-15 00:56:41,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 00:56:41,799 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-02-15 00:56:41,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 00:56:41,800 INFO L85 PathProgramCache]: Analyzing trace with hash -2090265385, now seen corresponding path program 1 times [2023-02-15 00:56:41,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 00:56:41,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1298874156] [2023-02-15 00:56:41,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 00:56:41,800 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 00:56:41,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 00:56:41,801 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 00:56:41,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-02-15 00:56:41,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 00:56:41,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-15 00:56:41,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 00:56:41,948 INFO L321 Elim1Store]: treesize reduction 50, result has 23.1 percent of original size [2023-02-15 00:56:41,949 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 2 case distinctions, treesize of input 26 treesize of output 33 [2023-02-15 00:56:41,976 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 00:56:41,976 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 00:56:41,977 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 00:56:41,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1298874156] [2023-02-15 00:56:41,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1298874156] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 00:56:41,977 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 00:56:41,977 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-15 00:56:41,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053815588] [2023-02-15 00:56:41,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 00:56:41,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 00:56:41,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 00:56:41,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 00:56:41,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 00:56:41,979 INFO L87 Difference]: Start difference. First operand 60 states and 71 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:56:42,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 00:56:42,032 INFO L93 Difference]: Finished difference Result 59 states and 70 transitions. [2023-02-15 00:56:42,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 00:56:42,033 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-02-15 00:56:42,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 00:56:42,035 INFO L225 Difference]: With dead ends: 59 [2023-02-15 00:56:42,035 INFO L226 Difference]: Without dead ends: 59 [2023-02-15 00:56:42,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 00:56:42,036 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 29 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 00:56:42,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 36 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 00:56:42,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-02-15 00:56:42,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2023-02-15 00:56:42,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 48 states have (on average 1.4583333333333333) internal successors, (70), 58 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:56:42,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 70 transitions. [2023-02-15 00:56:42,042 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 70 transitions. Word has length 13 [2023-02-15 00:56:42,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 00:56:42,042 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 70 transitions. [2023-02-15 00:56:42,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:56:42,042 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 70 transitions. [2023-02-15 00:56:42,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-02-15 00:56:42,043 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 00:56:42,043 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 00:56:42,064 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-02-15 00:56:42,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 00:56:42,271 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-02-15 00:56:42,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 00:56:42,271 INFO L85 PathProgramCache]: Analyzing trace with hash -2090265384, now seen corresponding path program 1 times [2023-02-15 00:56:42,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 00:56:42,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [575737951] [2023-02-15 00:56:42,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 00:56:42,272 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 00:56:42,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 00:56:42,273 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 00:56:42,274 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-02-15 00:56:42,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 00:56:42,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 14 conjunts are in the unsatisfiable core [2023-02-15 00:56:42,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 00:56:42,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 00:56:42,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 00:56:42,352 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-02-15 00:56:42,353 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 20 [2023-02-15 00:56:42,361 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 14 treesize of output 12 [2023-02-15 00:56:42,402 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 00:56:42,402 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 00:56:42,403 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 00:56:42,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [575737951] [2023-02-15 00:56:42,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [575737951] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 00:56:42,403 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 00:56:42,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 00:56:42,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493852173] [2023-02-15 00:56:42,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 00:56:42,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 00:56:42,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 00:56:42,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 00:56:42,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-15 00:56:42,404 INFO L87 Difference]: Start difference. First operand 59 states and 70 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:56:42,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 00:56:42,537 INFO L93 Difference]: Finished difference Result 117 states and 136 transitions. [2023-02-15 00:56:42,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-15 00:56:42,537 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-02-15 00:56:42,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 00:56:42,538 INFO L225 Difference]: With dead ends: 117 [2023-02-15 00:56:42,538 INFO L226 Difference]: Without dead ends: 117 [2023-02-15 00:56:42,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-02-15 00:56:42,539 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 80 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 00:56:42,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 144 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 00:56:42,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2023-02-15 00:56:42,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 87. [2023-02-15 00:56:42,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 76 states have (on average 1.355263157894737) internal successors, (103), 86 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:56:42,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 103 transitions. [2023-02-15 00:56:42,543 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 103 transitions. Word has length 13 [2023-02-15 00:56:42,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 00:56:42,544 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 103 transitions. [2023-02-15 00:56:42,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:56:42,544 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 103 transitions. [2023-02-15 00:56:42,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-02-15 00:56:42,544 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 00:56:42,544 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 00:56:42,552 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 [2023-02-15 00:56:42,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 00:56:42,752 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-02-15 00:56:42,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 00:56:42,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1811674902, now seen corresponding path program 1 times [2023-02-15 00:56:42,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 00:56:42,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1881595120] [2023-02-15 00:56:42,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 00:56:42,752 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 00:56:42,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 00:56:42,753 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 00:56:42,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-02-15 00:56:42,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 00:56:42,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 11 conjunts are in the unsatisfiable core [2023-02-15 00:56:42,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 00:56:42,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 00:56:42,854 INFO L321 Elim1Store]: treesize reduction 26, result has 31.6 percent of original size [2023-02-15 00:56:42,854 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 25 [2023-02-15 00:56:42,861 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 42 treesize of output 38 [2023-02-15 00:56:42,959 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 00:56:42,959 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 00:56:42,960 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 00:56:42,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1881595120] [2023-02-15 00:56:42,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1881595120] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 00:56:42,960 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 00:56:42,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 00:56:42,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939801090] [2023-02-15 00:56:42,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 00:56:42,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 00:56:42,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 00:56:42,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 00:56:42,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-15 00:56:42,961 INFO L87 Difference]: Start difference. First operand 87 states and 103 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:56:43,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 00:56:43,079 INFO L93 Difference]: Finished difference Result 91 states and 107 transitions. [2023-02-15 00:56:43,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-15 00:56:43,079 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-02-15 00:56:43,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 00:56:43,080 INFO L225 Difference]: With dead ends: 91 [2023-02-15 00:56:43,080 INFO L226 Difference]: Without dead ends: 91 [2023-02-15 00:56:43,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-02-15 00:56:43,081 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 78 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 00:56:43,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 62 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 00:56:43,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2023-02-15 00:56:43,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 61. [2023-02-15 00:56:43,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 50 states have (on average 1.44) internal successors, (72), 60 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:56:43,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 72 transitions. [2023-02-15 00:56:43,084 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 72 transitions. Word has length 13 [2023-02-15 00:56:43,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 00:56:43,084 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 72 transitions. [2023-02-15 00:56:43,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:56:43,084 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 72 transitions. [2023-02-15 00:56:43,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-02-15 00:56:43,085 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 00:56:43,085 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 00:56:43,094 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-02-15 00:56:43,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 00:56:43,293 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-02-15 00:56:43,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 00:56:43,293 INFO L85 PathProgramCache]: Analyzing trace with hash -862198757, now seen corresponding path program 1 times [2023-02-15 00:56:43,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 00:56:43,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1161619617] [2023-02-15 00:56:43,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 00:56:43,294 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 00:56:43,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 00:56:43,295 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 00:56:43,297 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-02-15 00:56:43,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 00:56:43,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-15 00:56:43,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 00:56:43,405 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 00:56:43,405 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 00:56:43,467 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 00:56:43,468 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 00:56:43,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1161619617] [2023-02-15 00:56:43,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1161619617] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 00:56:43,468 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 00:56:43,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-02-15 00:56:43,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930474026] [2023-02-15 00:56:43,468 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 00:56:43,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-15 00:56:43,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 00:56:43,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-15 00:56:43,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-02-15 00:56:43,469 INFO L87 Difference]: Start difference. First operand 61 states and 72 transitions. Second operand has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:56:43,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 00:56:43,555 INFO L93 Difference]: Finished difference Result 115 states and 133 transitions. [2023-02-15 00:56:43,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 00:56:43,556 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-02-15 00:56:43,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 00:56:43,557 INFO L225 Difference]: With dead ends: 115 [2023-02-15 00:56:43,557 INFO L226 Difference]: Without dead ends: 115 [2023-02-15 00:56:43,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-02-15 00:56:43,557 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 130 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 00:56:43,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 189 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 00:56:43,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2023-02-15 00:56:43,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 92. [2023-02-15 00:56:43,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 81 states have (on average 1.3333333333333333) internal successors, (108), 91 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:56:43,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 108 transitions. [2023-02-15 00:56:43,562 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 108 transitions. Word has length 17 [2023-02-15 00:56:43,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 00:56:43,562 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 108 transitions. [2023-02-15 00:56:43,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:56:43,563 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 108 transitions. [2023-02-15 00:56:43,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-02-15 00:56:43,563 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 00:56:43,563 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 00:56:43,576 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 [2023-02-15 00:56:43,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 00:56:43,773 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-02-15 00:56:43,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 00:56:43,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1873316007, now seen corresponding path program 1 times [2023-02-15 00:56:43,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 00:56:43,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1358838234] [2023-02-15 00:56:43,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 00:56:43,774 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 00:56:43,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 00:56:43,775 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 00:56:43,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-02-15 00:56:43,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 00:56:43,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 17 conjunts are in the unsatisfiable core [2023-02-15 00:56:43,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 00:56:43,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 00:56:43,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 00:56:43,890 INFO L321 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-02-15 00:56:43,890 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 22 [2023-02-15 00:56:43,897 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 14 treesize of output 12 [2023-02-15 00:56:44,125 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 00:56:44,125 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 00:56:44,430 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 00:56:44,461 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 00:56:44,462 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 00:56:44,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1358838234] [2023-02-15 00:56:44,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1358838234] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 00:56:44,462 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 00:56:44,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-02-15 00:56:44,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011623039] [2023-02-15 00:56:44,462 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 00:56:44,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-15 00:56:44,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 00:56:44,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-15 00:56:44,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2023-02-15 00:56:44,463 INFO L87 Difference]: Start difference. First operand 92 states and 108 transitions. Second operand has 12 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 12 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:56:45,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 00:56:45,207 INFO L93 Difference]: Finished difference Result 126 states and 148 transitions. [2023-02-15 00:56:45,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-15 00:56:45,208 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 12 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-02-15 00:56:45,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 00:56:45,209 INFO L225 Difference]: With dead ends: 126 [2023-02-15 00:56:45,209 INFO L226 Difference]: Without dead ends: 126 [2023-02-15 00:56:45,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=113, Invalid=193, Unknown=0, NotChecked=0, Total=306 [2023-02-15 00:56:45,210 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 299 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-15 00:56:45,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [299 Valid, 126 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-15 00:56:45,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2023-02-15 00:56:45,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 104. [2023-02-15 00:56:45,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 93 states have (on average 1.3225806451612903) internal successors, (123), 103 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:56:45,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 123 transitions. [2023-02-15 00:56:45,213 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 123 transitions. Word has length 17 [2023-02-15 00:56:45,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 00:56:45,213 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 123 transitions. [2023-02-15 00:56:45,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 12 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:56:45,213 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 123 transitions. [2023-02-15 00:56:45,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-02-15 00:56:45,213 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 00:56:45,213 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] [2023-02-15 00:56:45,222 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-02-15 00:56:45,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 00:56:45,421 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-02-15 00:56:45,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 00:56:45,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1860319208, now seen corresponding path program 1 times [2023-02-15 00:56:45,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 00:56:45,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1841962555] [2023-02-15 00:56:45,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 00:56:45,422 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 00:56:45,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 00:56:45,423 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 00:56:45,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-02-15 00:56:45,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 00:56:45,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-15 00:56:45,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 00:56:45,574 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-15 00:56:45,574 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 00:56:45,574 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 00:56:45,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1841962555] [2023-02-15 00:56:45,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1841962555] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 00:56:45,575 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 00:56:45,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 00:56:45,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241861742] [2023-02-15 00:56:45,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 00:56:45,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-15 00:56:45,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 00:56:45,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-15 00:56:45,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-15 00:56:45,576 INFO L87 Difference]: Start difference. First operand 104 states and 123 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:56:45,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 00:56:45,644 INFO L93 Difference]: Finished difference Result 170 states and 199 transitions. [2023-02-15 00:56:45,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-15 00:56:45,645 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-02-15 00:56:45,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 00:56:45,645 INFO L225 Difference]: With dead ends: 170 [2023-02-15 00:56:45,645 INFO L226 Difference]: Without dead ends: 170 [2023-02-15 00:56:45,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-15 00:56:45,646 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 68 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 00:56:45,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 127 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 00:56:45,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2023-02-15 00:56:45,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 131. [2023-02-15 00:56:45,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 120 states have (on average 1.2916666666666667) internal successors, (155), 130 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:56:45,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 155 transitions. [2023-02-15 00:56:45,650 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 155 transitions. Word has length 20 [2023-02-15 00:56:45,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 00:56:45,650 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 155 transitions. [2023-02-15 00:56:45,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:56:45,650 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 155 transitions. [2023-02-15 00:56:45,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-02-15 00:56:45,651 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 00:56:45,651 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] [2023-02-15 00:56:45,666 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 (12)] Ended with exit code 0 [2023-02-15 00:56:45,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 00:56:45,858 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-02-15 00:56:45,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 00:56:45,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1860318342, now seen corresponding path program 1 times [2023-02-15 00:56:45,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 00:56:45,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [571948825] [2023-02-15 00:56:45,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 00:56:45,859 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 00:56:45,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 00:56:45,860 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 00:56:45,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-02-15 00:56:45,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 00:56:45,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-15 00:56:45,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 00:56:45,945 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 00:56:45,945 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 00:56:45,946 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 00:56:45,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [571948825] [2023-02-15 00:56:45,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [571948825] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 00:56:45,946 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 00:56:45,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 00:56:45,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212267115] [2023-02-15 00:56:45,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 00:56:45,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-15 00:56:45,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 00:56:45,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-15 00:56:45,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-15 00:56:45,947 INFO L87 Difference]: Start difference. First operand 131 states and 155 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:56:45,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 00:56:46,000 INFO L93 Difference]: Finished difference Result 129 states and 153 transitions. [2023-02-15 00:56:46,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-15 00:56:46,000 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-02-15 00:56:46,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 00:56:46,001 INFO L225 Difference]: With dead ends: 129 [2023-02-15 00:56:46,001 INFO L226 Difference]: Without dead ends: 129 [2023-02-15 00:56:46,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-15 00:56:46,001 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 42 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 00:56:46,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 48 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 00:56:46,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2023-02-15 00:56:46,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2023-02-15 00:56:46,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 120 states have (on average 1.275) internal successors, (153), 128 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:56:46,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 153 transitions. [2023-02-15 00:56:46,004 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 153 transitions. Word has length 20 [2023-02-15 00:56:46,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 00:56:46,004 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 153 transitions. [2023-02-15 00:56:46,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:56:46,004 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 153 transitions. [2023-02-15 00:56:46,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-02-15 00:56:46,005 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 00:56:46,005 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] [2023-02-15 00:56:46,017 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-02-15 00:56:46,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 00:56:46,206 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-02-15 00:56:46,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 00:56:46,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1860318341, now seen corresponding path program 1 times [2023-02-15 00:56:46,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 00:56:46,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1434988670] [2023-02-15 00:56:46,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 00:56:46,207 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 [2023-02-15 00:56:46,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 00:56:46,208 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 00:56:46,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-02-15 00:56:46,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 00:56:46,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-15 00:56:46,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 00:56:46,355 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 00:56:46,355 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 00:56:46,477 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 25 treesize of output 21 [2023-02-15 00:56:46,524 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 00:56:46,524 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 00:56:46,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1434988670] [2023-02-15 00:56:46,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1434988670] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 00:56:46,525 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 00:56:46,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-02-15 00:56:46,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628652971] [2023-02-15 00:56:46,525 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 00:56:46,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-15 00:56:46,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 00:56:46,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-15 00:56:46,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-02-15 00:56:46,526 INFO L87 Difference]: Start difference. First operand 129 states and 153 transitions. Second operand has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:56:47,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 00:56:47,064 INFO L93 Difference]: Finished difference Result 219 states and 260 transitions. [2023-02-15 00:56:47,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-15 00:56:47,064 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-02-15 00:56:47,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 00:56:47,065 INFO L225 Difference]: With dead ends: 219 [2023-02-15 00:56:47,065 INFO L226 Difference]: Without dead ends: 219 [2023-02-15 00:56:47,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2023-02-15 00:56:47,066 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 298 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-15 00:56:47,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [298 Valid, 117 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-15 00:56:47,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2023-02-15 00:56:47,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 134. [2023-02-15 00:56:47,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 125 states have (on average 1.288) internal successors, (161), 133 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:56:47,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 161 transitions. [2023-02-15 00:56:47,069 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 161 transitions. Word has length 20 [2023-02-15 00:56:47,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 00:56:47,069 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 161 transitions. [2023-02-15 00:56:47,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:56:47,069 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 161 transitions. [2023-02-15 00:56:47,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-02-15 00:56:47,069 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 00:56:47,069 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] [2023-02-15 00:56:47,080 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-02-15 00:56:47,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 00:56:47,280 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-02-15 00:56:47,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 00:56:47,280 INFO L85 PathProgramCache]: Analyzing trace with hash 440503382, now seen corresponding path program 1 times [2023-02-15 00:56:47,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 00:56:47,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [407887634] [2023-02-15 00:56:47,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 00:56:47,281 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 00:56:47,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 00:56:47,282 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 00:56:47,284 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-02-15 00:56:47,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 00:56:47,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-15 00:56:47,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 00:56:47,468 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 00:56:47,468 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 00:56:47,542 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 00:56:47,542 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 00:56:47,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [407887634] [2023-02-15 00:56:47,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [407887634] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 00:56:47,542 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 00:56:47,542 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2023-02-15 00:56:47,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051574129] [2023-02-15 00:56:47,542 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 00:56:47,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-02-15 00:56:47,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 00:56:47,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-15 00:56:47,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2023-02-15 00:56:47,543 INFO L87 Difference]: Start difference. First operand 134 states and 161 transitions. Second operand has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:56:47,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 00:56:47,725 INFO L93 Difference]: Finished difference Result 198 states and 236 transitions. [2023-02-15 00:56:47,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-15 00:56:47,725 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-02-15 00:56:47,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 00:56:47,726 INFO L225 Difference]: With dead ends: 198 [2023-02-15 00:56:47,726 INFO L226 Difference]: Without dead ends: 198 [2023-02-15 00:56:47,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2023-02-15 00:56:47,727 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 260 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 00:56:47,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [260 Valid, 163 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 00:56:47,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2023-02-15 00:56:47,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 107. [2023-02-15 00:56:47,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 98 states have (on average 1.3061224489795917) internal successors, (128), 106 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:56:47,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 128 transitions. [2023-02-15 00:56:47,729 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 128 transitions. Word has length 20 [2023-02-15 00:56:47,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 00:56:47,729 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 128 transitions. [2023-02-15 00:56:47,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:56:47,729 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 128 transitions. [2023-02-15 00:56:47,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-02-15 00:56:47,730 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 00:56:47,730 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] [2023-02-15 00:56:47,756 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-02-15 00:56:47,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 00:56:47,931 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-02-15 00:56:47,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 00:56:47,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1835293711, now seen corresponding path program 1 times [2023-02-15 00:56:47,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 00:56:47,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1136069127] [2023-02-15 00:56:47,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 00:56:47,932 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 [2023-02-15 00:56:47,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 00:56:47,933 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 00:56:47,934 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-02-15 00:56:48,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 00:56:48,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-15 00:56:48,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 00:56:48,035 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 00:56:48,035 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 00:56:48,035 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 00:56:48,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1136069127] [2023-02-15 00:56:48,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1136069127] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 00:56:48,035 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 00:56:48,035 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 00:56:48,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166589633] [2023-02-15 00:56:48,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 00:56:48,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-15 00:56:48,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 00:56:48,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-15 00:56:48,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-15 00:56:48,036 INFO L87 Difference]: Start difference. First operand 107 states and 128 transitions. Second operand has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:56:48,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 00:56:48,082 INFO L93 Difference]: Finished difference Result 106 states and 127 transitions. [2023-02-15 00:56:48,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-15 00:56:48,082 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-02-15 00:56:48,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 00:56:48,083 INFO L225 Difference]: With dead ends: 106 [2023-02-15 00:56:48,083 INFO L226 Difference]: Without dead ends: 106 [2023-02-15 00:56:48,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-15 00:56:48,083 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 45 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 00:56:48,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 49 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 00:56:48,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2023-02-15 00:56:48,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2023-02-15 00:56:48,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 98 states have (on average 1.2959183673469388) internal successors, (127), 105 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:56:48,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 127 transitions. [2023-02-15 00:56:48,086 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 127 transitions. Word has length 21 [2023-02-15 00:56:48,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 00:56:48,087 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 127 transitions. [2023-02-15 00:56:48,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:56:48,087 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 127 transitions. [2023-02-15 00:56:48,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-02-15 00:56:48,087 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 00:56:48,087 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] [2023-02-15 00:56:48,106 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-02-15 00:56:48,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 00:56:48,288 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-02-15 00:56:48,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 00:56:48,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1835293710, now seen corresponding path program 1 times [2023-02-15 00:56:48,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 00:56:48,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [465194866] [2023-02-15 00:56:48,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 00:56:48,288 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 00:56:48,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 00:56:48,289 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 00:56:48,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-02-15 00:56:48,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 00:56:48,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-15 00:56:48,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 00:56:48,432 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 00:56:48,432 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 00:56:48,572 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 25 treesize of output 21 [2023-02-15 00:56:48,654 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 00:56:48,655 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 00:56:48,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [465194866] [2023-02-15 00:56:48,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [465194866] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 00:56:48,655 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 00:56:48,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-02-15 00:56:48,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144708584] [2023-02-15 00:56:48,655 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 00:56:48,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-15 00:56:48,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 00:56:48,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-15 00:56:48,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-02-15 00:56:48,656 INFO L87 Difference]: Start difference. First operand 106 states and 127 transitions. Second operand has 12 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:56:49,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 00:56:49,258 INFO L93 Difference]: Finished difference Result 188 states and 224 transitions. [2023-02-15 00:56:49,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-15 00:56:49,259 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-02-15 00:56:49,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 00:56:49,260 INFO L225 Difference]: With dead ends: 188 [2023-02-15 00:56:49,260 INFO L226 Difference]: Without dead ends: 188 [2023-02-15 00:56:49,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2023-02-15 00:56:49,261 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 455 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-15 00:56:49,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [455 Valid, 128 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-15 00:56:49,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2023-02-15 00:56:49,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 109. [2023-02-15 00:56:49,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 101 states have (on average 1.297029702970297) internal successors, (131), 108 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:56:49,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 131 transitions. [2023-02-15 00:56:49,263 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 131 transitions. Word has length 21 [2023-02-15 00:56:49,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 00:56:49,263 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 131 transitions. [2023-02-15 00:56:49,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:56:49,263 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 131 transitions. [2023-02-15 00:56:49,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-02-15 00:56:49,263 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 00:56:49,263 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] [2023-02-15 00:56:49,273 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Ended with exit code 0 [2023-02-15 00:56:49,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 00:56:49,474 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-02-15 00:56:49,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 00:56:49,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1059572912, now seen corresponding path program 1 times [2023-02-15 00:56:49,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 00:56:49,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1315155355] [2023-02-15 00:56:49,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 00:56:49,475 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 00:56:49,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 00:56:49,476 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 00:56:49,478 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-02-15 00:56:49,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 00:56:49,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-15 00:56:49,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 00:56:49,584 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-15 00:56:49,585 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 00:56:49,585 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 00:56:49,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1315155355] [2023-02-15 00:56:49,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1315155355] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 00:56:49,585 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 00:56:49,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-15 00:56:49,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862305875] [2023-02-15 00:56:49,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 00:56:49,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 00:56:49,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 00:56:49,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 00:56:49,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-15 00:56:49,586 INFO L87 Difference]: Start difference. First operand 109 states and 131 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:56:49,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 00:56:49,677 INFO L93 Difference]: Finished difference Result 138 states and 164 transitions. [2023-02-15 00:56:49,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-15 00:56:49,680 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2023-02-15 00:56:49,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 00:56:49,680 INFO L225 Difference]: With dead ends: 138 [2023-02-15 00:56:49,680 INFO L226 Difference]: Without dead ends: 138 [2023-02-15 00:56:49,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-02-15 00:56:49,681 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 51 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 00:56:49,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 157 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 00:56:49,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2023-02-15 00:56:49,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 127. [2023-02-15 00:56:49,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 119 states have (on average 1.3277310924369747) internal successors, (158), 126 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:56:49,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 158 transitions. [2023-02-15 00:56:49,690 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 158 transitions. Word has length 22 [2023-02-15 00:56:49,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 00:56:49,691 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 158 transitions. [2023-02-15 00:56:49,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:56:49,691 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 158 transitions. [2023-02-15 00:56:49,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-02-15 00:56:49,691 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 00:56:49,691 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] [2023-02-15 00:56:49,711 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 [2023-02-15 00:56:49,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 00:56:49,899 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-02-15 00:56:49,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 00:56:49,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1546450642, now seen corresponding path program 1 times [2023-02-15 00:56:49,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 00:56:49,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [832872142] [2023-02-15 00:56:49,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 00:56:49,900 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 00:56:49,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 00:56:49,931 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 00:56:49,932 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-02-15 00:56:49,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 00:56:49,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-15 00:56:49,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 00:56:50,051 INFO L321 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2023-02-15 00:56:50,051 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 2 case distinctions, treesize of input 12 treesize of output 33 [2023-02-15 00:56:50,080 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-15 00:56:50,080 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 00:56:50,080 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 00:56:50,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [832872142] [2023-02-15 00:56:50,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [832872142] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 00:56:50,081 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 00:56:50,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 00:56:50,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681802781] [2023-02-15 00:56:50,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 00:56:50,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-15 00:56:50,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 00:56:50,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-15 00:56:50,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-15 00:56:50,084 INFO L87 Difference]: Start difference. First operand 127 states and 158 transitions. Second operand has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:56:50,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 00:56:50,134 INFO L93 Difference]: Finished difference Result 126 states and 156 transitions. [2023-02-15 00:56:50,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-15 00:56:50,134 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2023-02-15 00:56:50,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 00:56:50,135 INFO L225 Difference]: With dead ends: 126 [2023-02-15 00:56:50,135 INFO L226 Difference]: Without dead ends: 126 [2023-02-15 00:56:50,135 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-15 00:56:50,135 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 35 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 00:56:50,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 51 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 00:56:50,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2023-02-15 00:56:50,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2023-02-15 00:56:50,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 119 states have (on average 1.3109243697478992) internal successors, (156), 125 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:56:50,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 156 transitions. [2023-02-15 00:56:50,137 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 156 transitions. Word has length 22 [2023-02-15 00:56:50,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 00:56:50,137 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 156 transitions. [2023-02-15 00:56:50,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:56:50,137 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 156 transitions. [2023-02-15 00:56:50,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-02-15 00:56:50,138 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 00:56:50,138 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] [2023-02-15 00:56:50,149 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2023-02-15 00:56:50,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 00:56:50,347 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-02-15 00:56:50,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 00:56:50,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1546450643, now seen corresponding path program 1 times [2023-02-15 00:56:50,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 00:56:50,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [673392096] [2023-02-15 00:56:50,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 00:56:50,348 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 00:56:50,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 00:56:50,349 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 00:56:50,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-02-15 00:56:50,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 00:56:50,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 12 conjunts are in the unsatisfiable core [2023-02-15 00:56:50,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 00:56:50,456 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2023-02-15 00:56:50,456 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 2 case distinctions, treesize of input 12 treesize of output 27 [2023-02-15 00:56:50,527 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-15 00:56:50,527 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 00:56:50,527 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 00:56:50,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [673392096] [2023-02-15 00:56:50,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [673392096] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 00:56:50,528 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 00:56:50,528 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 00:56:50,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543606507] [2023-02-15 00:56:50,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 00:56:50,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 00:56:50,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 00:56:50,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 00:56:50,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-15 00:56:50,528 INFO L87 Difference]: Start difference. First operand 126 states and 156 transitions. Second operand has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:56:50,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 00:56:50,675 INFO L93 Difference]: Finished difference Result 234 states and 295 transitions. [2023-02-15 00:56:50,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-15 00:56:50,675 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2023-02-15 00:56:50,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 00:56:50,676 INFO L225 Difference]: With dead ends: 234 [2023-02-15 00:56:50,676 INFO L226 Difference]: Without dead ends: 234 [2023-02-15 00:56:50,676 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-02-15 00:56:50,677 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 109 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 00:56:50,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 121 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 00:56:50,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2023-02-15 00:56:50,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 186. [2023-02-15 00:56:50,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 179 states have (on average 1.329608938547486) internal successors, (238), 185 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:56:50,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 238 transitions. [2023-02-15 00:56:50,680 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 238 transitions. Word has length 22 [2023-02-15 00:56:50,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 00:56:50,680 INFO L495 AbstractCegarLoop]: Abstraction has 186 states and 238 transitions. [2023-02-15 00:56:50,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:56:50,680 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 238 transitions. [2023-02-15 00:56:50,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-02-15 00:56:50,680 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 00:56:50,680 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] [2023-02-15 00:56:50,694 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-02-15 00:56:50,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 00:56:50,888 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-02-15 00:56:50,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 00:56:50,888 INFO L85 PathProgramCache]: Analyzing trace with hash 728802193, now seen corresponding path program 1 times [2023-02-15 00:56:50,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 00:56:50,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [264336914] [2023-02-15 00:56:50,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 00:56:50,889 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 [2023-02-15 00:56:50,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 00:56:50,890 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 00:56:50,893 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 (21)] Waiting until timeout for monitored process [2023-02-15 00:56:50,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 00:56:50,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 13 conjunts are in the unsatisfiable core [2023-02-15 00:56:50,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 00:56:51,022 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2023-02-15 00:56:51,022 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 2 case distinctions, treesize of input 14 treesize of output 29 [2023-02-15 00:56:51,177 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-15 00:56:51,177 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 00:56:51,177 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 00:56:51,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [264336914] [2023-02-15 00:56:51,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [264336914] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 00:56:51,177 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 00:56:51,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 00:56:51,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024981155] [2023-02-15 00:56:51,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 00:56:51,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 00:56:51,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 00:56:51,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 00:56:51,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-15 00:56:51,178 INFO L87 Difference]: Start difference. First operand 186 states and 238 transitions. Second operand has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:56:51,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 00:56:51,322 INFO L93 Difference]: Finished difference Result 224 states and 289 transitions. [2023-02-15 00:56:51,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-15 00:56:51,322 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2023-02-15 00:56:51,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 00:56:51,323 INFO L225 Difference]: With dead ends: 224 [2023-02-15 00:56:51,323 INFO L226 Difference]: Without dead ends: 224 [2023-02-15 00:56:51,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-02-15 00:56:51,324 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 111 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 00:56:51,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 54 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 00:56:51,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2023-02-15 00:56:51,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 156. [2023-02-15 00:56:51,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 149 states have (on average 1.3624161073825503) internal successors, (203), 155 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:56:51,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 203 transitions. [2023-02-15 00:56:51,326 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 203 transitions. Word has length 22 [2023-02-15 00:56:51,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 00:56:51,326 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 203 transitions. [2023-02-15 00:56:51,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:56:51,327 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 203 transitions. [2023-02-15 00:56:51,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-02-15 00:56:51,327 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 00:56:51,327 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2023-02-15 00:56:51,336 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 (21)] Ended with exit code 0 [2023-02-15 00:56:51,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 00:56:51,528 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-02-15 00:56:51,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 00:56:51,528 INFO L85 PathProgramCache]: Analyzing trace with hash -591263241, now seen corresponding path program 2 times [2023-02-15 00:56:51,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 00:56:51,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1682148798] [2023-02-15 00:56:51,528 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 00:56:51,528 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 00:56:51,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 00:56:51,535 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 00:56:51,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-02-15 00:56:51,618 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 00:56:51,618 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 00:56:51,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 19 conjunts are in the unsatisfiable core [2023-02-15 00:56:51,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 00:56:51,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 00:56:51,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 00:56:51,655 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-02-15 00:56:51,655 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 22 [2023-02-15 00:56:51,670 INFO L321 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2023-02-15 00:56:51,670 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 44 treesize of output 45 [2023-02-15 00:56:51,965 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 00:56:51,965 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 00:56:52,745 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 00:56:52,746 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 00:56:52,813 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 00:56:52,813 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 00:56:52,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1682148798] [2023-02-15 00:56:52,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1682148798] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 00:56:52,814 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 00:56:52,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2023-02-15 00:56:52,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435965045] [2023-02-15 00:56:52,814 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 00:56:52,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-02-15 00:56:52,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 00:56:52,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-02-15 00:56:52,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2023-02-15 00:56:52,816 INFO L87 Difference]: Start difference. First operand 156 states and 203 transitions. Second operand has 18 states, 17 states have (on average 2.588235294117647) internal successors, (44), 18 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:56:56,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 00:56:56,880 INFO L93 Difference]: Finished difference Result 1004 states and 1343 transitions. [2023-02-15 00:56:56,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-02-15 00:56:56,882 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.588235294117647) internal successors, (44), 18 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2023-02-15 00:56:56,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 00:56:56,884 INFO L225 Difference]: With dead ends: 1004 [2023-02-15 00:56:56,884 INFO L226 Difference]: Without dead ends: 1004 [2023-02-15 00:56:56,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=311, Invalid=619, Unknown=0, NotChecked=0, Total=930 [2023-02-15 00:56:56,885 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 1290 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 484 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1290 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-02-15 00:56:56,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1290 Valid, 559 Invalid, 494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 484 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-02-15 00:56:56,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1004 states. [2023-02-15 00:56:56,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1004 to 204. [2023-02-15 00:56:56,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 197 states have (on average 1.3350253807106598) internal successors, (263), 203 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:56:56,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 263 transitions. [2023-02-15 00:56:56,903 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 263 transitions. Word has length 23 [2023-02-15 00:56:56,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 00:56:56,903 INFO L495 AbstractCegarLoop]: Abstraction has 204 states and 263 transitions. [2023-02-15 00:56:56,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.588235294117647) internal successors, (44), 18 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:56:56,903 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 263 transitions. [2023-02-15 00:56:56,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-02-15 00:56:56,904 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 00:56:56,904 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] [2023-02-15 00:56:56,927 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 [2023-02-15 00:56:57,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 00:56:57,104 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-02-15 00:56:57,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 00:56:57,105 INFO L85 PathProgramCache]: Analyzing trace with hash 88962737, now seen corresponding path program 1 times [2023-02-15 00:56:57,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 00:56:57,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [387204353] [2023-02-15 00:56:57,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 00:56:57,105 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 00:56:57,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 00:56:57,106 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 00:56:57,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-02-15 00:56:57,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 00:56:57,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-15 00:56:57,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 00:56:57,180 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-15 00:56:57,180 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 00:56:57,181 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 00:56:57,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [387204353] [2023-02-15 00:56:57,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [387204353] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 00:56:57,181 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 00:56:57,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 00:56:57,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657973362] [2023-02-15 00:56:57,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 00:56:57,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 00:56:57,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 00:56:57,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 00:56:57,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 00:56:57,182 INFO L87 Difference]: Start difference. First operand 204 states and 263 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:56:57,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 00:56:57,198 INFO L93 Difference]: Finished difference Result 216 states and 275 transitions. [2023-02-15 00:56:57,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 00:56:57,200 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2023-02-15 00:56:57,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 00:56:57,201 INFO L225 Difference]: With dead ends: 216 [2023-02-15 00:56:57,201 INFO L226 Difference]: Without dead ends: 216 [2023-02-15 00:56:57,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 00:56:57,202 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 16 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 00:56:57,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 63 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 00:56:57,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2023-02-15 00:56:57,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 209. [2023-02-15 00:56:57,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 202 states have (on average 1.3217821782178218) internal successors, (267), 208 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:56:57,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 267 transitions. [2023-02-15 00:56:57,205 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 267 transitions. Word has length 24 [2023-02-15 00:56:57,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 00:56:57,205 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 267 transitions. [2023-02-15 00:56:57,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:56:57,205 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 267 transitions. [2023-02-15 00:56:57,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-02-15 00:56:57,206 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 00:56:57,206 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 00:56:57,215 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 [2023-02-15 00:56:57,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 00:56:57,413 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-02-15 00:56:57,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 00:56:57,414 INFO L85 PathProgramCache]: Analyzing trace with hash -747793046, now seen corresponding path program 1 times [2023-02-15 00:56:57,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 00:56:57,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [267924152] [2023-02-15 00:56:57,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 00:56:57,414 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 [2023-02-15 00:56:57,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 00:56:57,415 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 00:56:57,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-02-15 00:56:57,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 00:56:57,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-15 00:56:57,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 00:56:57,556 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-15 00:56:57,557 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 00:56:57,643 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-15 00:56:57,643 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 00:56:57,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [267924152] [2023-02-15 00:56:57,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [267924152] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 00:56:57,644 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 00:56:57,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-02-15 00:56:57,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011505905] [2023-02-15 00:56:57,644 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 00:56:57,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-02-15 00:56:57,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 00:56:57,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-02-15 00:56:57,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-02-15 00:56:57,645 INFO L87 Difference]: Start difference. First operand 209 states and 267 transitions. Second operand has 10 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:56:57,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 00:56:57,766 INFO L93 Difference]: Finished difference Result 222 states and 272 transitions. [2023-02-15 00:56:57,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 00:56:57,767 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2023-02-15 00:56:57,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 00:56:57,767 INFO L225 Difference]: With dead ends: 222 [2023-02-15 00:56:57,767 INFO L226 Difference]: Without dead ends: 222 [2023-02-15 00:56:57,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2023-02-15 00:56:57,768 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 96 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 00:56:57,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 274 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 00:56:57,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2023-02-15 00:56:57,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 205. [2023-02-15 00:56:57,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 198 states have (on average 1.3080808080808082) internal successors, (259), 204 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:56:57,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 259 transitions. [2023-02-15 00:56:57,771 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 259 transitions. Word has length 25 [2023-02-15 00:56:57,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 00:56:57,772 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 259 transitions. [2023-02-15 00:56:57,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:56:57,772 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 259 transitions. [2023-02-15 00:56:57,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-02-15 00:56:57,772 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 00:56:57,772 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 00:56:57,791 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 [2023-02-15 00:56:57,980 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 [2023-02-15 00:56:57,980 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-02-15 00:56:57,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 00:56:57,981 INFO L85 PathProgramCache]: Analyzing trace with hash -528938328, now seen corresponding path program 1 times [2023-02-15 00:56:57,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 00:56:57,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [641173613] [2023-02-15 00:56:57,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 00:56:57,982 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 00:56:57,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 00:56:57,983 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) [2023-02-15 00:56:57,985 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 [2023-02-15 00:56:58,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 00:56:58,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 11 conjunts are in the unsatisfiable core [2023-02-15 00:56:58,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 00:56:58,213 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 00:56:58,213 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 00:56:58,326 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 00:56:58,326 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 00:56:58,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [641173613] [2023-02-15 00:56:58,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [641173613] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 00:56:58,326 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 00:56:58,326 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 15 [2023-02-15 00:56:58,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378668314] [2023-02-15 00:56:58,327 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 00:56:58,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-02-15 00:56:58,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 00:56:58,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-02-15 00:56:58,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2023-02-15 00:56:58,327 INFO L87 Difference]: Start difference. First operand 205 states and 259 transitions. Second operand has 15 states, 15 states have (on average 3.0) internal successors, (45), 15 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:56:58,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 00:56:58,579 INFO L93 Difference]: Finished difference Result 265 states and 332 transitions. [2023-02-15 00:56:58,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-15 00:56:58,579 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 15 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2023-02-15 00:56:58,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 00:56:58,580 INFO L225 Difference]: With dead ends: 265 [2023-02-15 00:56:58,580 INFO L226 Difference]: Without dead ends: 265 [2023-02-15 00:56:58,581 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2023-02-15 00:56:58,582 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 149 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 00:56:58,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 335 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 00:56:58,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2023-02-15 00:56:58,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 239. [2023-02-15 00:56:58,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 232 states have (on average 1.331896551724138) internal successors, (309), 238 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:56:58,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 309 transitions. [2023-02-15 00:56:58,586 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 309 transitions. Word has length 25 [2023-02-15 00:56:58,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 00:56:58,586 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 309 transitions. [2023-02-15 00:56:58,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 15 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:56:58,600 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 309 transitions. [2023-02-15 00:56:58,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-02-15 00:56:58,601 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 00:56:58,601 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] [2023-02-15 00:56:58,611 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 (25)] Forceful destruction successful, exit code 0 [2023-02-15 00:56:58,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 00:56:58,802 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-02-15 00:56:58,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 00:56:58,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1854162937, now seen corresponding path program 1 times [2023-02-15 00:56:58,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 00:56:58,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2082218212] [2023-02-15 00:56:58,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 00:56:58,803 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 00:56:58,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 00:56:58,804 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 00:56:58,806 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 (26)] Waiting until timeout for monitored process [2023-02-15 00:56:58,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 00:56:58,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 11 conjunts are in the unsatisfiable core [2023-02-15 00:56:58,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 00:56:59,029 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 00:56:59,030 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 00:56:59,115 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 00:56:59,115 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 00:56:59,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2082218212] [2023-02-15 00:56:59,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2082218212] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 00:56:59,115 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 00:56:59,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2023-02-15 00:56:59,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234743241] [2023-02-15 00:56:59,116 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 00:56:59,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-02-15 00:56:59,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 00:56:59,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-02-15 00:56:59,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2023-02-15 00:56:59,117 INFO L87 Difference]: Start difference. First operand 239 states and 309 transitions. Second operand has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 13 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:56:59,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 00:56:59,376 INFO L93 Difference]: Finished difference Result 246 states and 307 transitions. [2023-02-15 00:56:59,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-15 00:56:59,376 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 13 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2023-02-15 00:56:59,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 00:56:59,377 INFO L225 Difference]: With dead ends: 246 [2023-02-15 00:56:59,377 INFO L226 Difference]: Without dead ends: 246 [2023-02-15 00:56:59,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2023-02-15 00:56:59,378 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 197 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 00:56:59,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 161 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 00:56:59,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2023-02-15 00:56:59,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 200. [2023-02-15 00:56:59,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 194 states have (on average 1.288659793814433) internal successors, (250), 199 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:56:59,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 250 transitions. [2023-02-15 00:56:59,380 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 250 transitions. Word has length 27 [2023-02-15 00:56:59,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 00:56:59,381 INFO L495 AbstractCegarLoop]: Abstraction has 200 states and 250 transitions. [2023-02-15 00:56:59,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 13 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:56:59,381 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 250 transitions. [2023-02-15 00:56:59,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-15 00:56:59,381 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 00:56:59,381 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] [2023-02-15 00:56:59,391 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 (26)] Forceful destruction successful, exit code 0 [2023-02-15 00:56:59,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 00:56:59,589 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-02-15 00:56:59,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 00:56:59,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1314778955, now seen corresponding path program 1 times [2023-02-15 00:56:59,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 00:56:59,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [223467754] [2023-02-15 00:56:59,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 00:56:59,590 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 00:56:59,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 00:56:59,591 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 00:56:59,609 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 (27)] Waiting until timeout for monitored process [2023-02-15 00:56:59,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 00:56:59,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 15 conjunts are in the unsatisfiable core [2023-02-15 00:56:59,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 00:57:02,007 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-15 00:57:02,007 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 00:57:02,007 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 00:57:02,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [223467754] [2023-02-15 00:57:02,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [223467754] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 00:57:02,007 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 00:57:02,007 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 00:57:02,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927010107] [2023-02-15 00:57:02,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 00:57:02,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 00:57:02,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 00:57:02,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 00:57:02,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=11, Unknown=1, NotChecked=0, Total=20 [2023-02-15 00:57:02,008 INFO L87 Difference]: Start difference. First operand 200 states and 250 transitions. Second operand has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:57:04,017 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] [2023-02-15 00:57:06,033 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-15 00:57:08,038 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-15 00:57:10,042 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-15 00:57:12,046 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-15 00:57:12,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 00:57:12,152 INFO L93 Difference]: Finished difference Result 240 states and 298 transitions. [2023-02-15 00:57:12,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-15 00:57:12,153 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2023-02-15 00:57:12,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 00:57:12,153 INFO L225 Difference]: With dead ends: 240 [2023-02-15 00:57:12,153 INFO L226 Difference]: Without dead ends: 238 [2023-02-15 00:57:12,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=8, Invalid=11, Unknown=1, NotChecked=0, Total=20 [2023-02-15 00:57:12,154 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 7 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2023-02-15 00:57:12,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 113 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 7 Unknown, 0 Unchecked, 10.1s Time] [2023-02-15 00:57:12,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2023-02-15 00:57:12,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 236. [2023-02-15 00:57:12,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 230 states have (on average 1.2826086956521738) internal successors, (295), 235 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:57:12,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 295 transitions. [2023-02-15 00:57:12,159 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 295 transitions. Word has length 28 [2023-02-15 00:57:12,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 00:57:12,159 INFO L495 AbstractCegarLoop]: Abstraction has 236 states and 295 transitions. [2023-02-15 00:57:12,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:57:12,159 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 295 transitions. [2023-02-15 00:57:12,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-15 00:57:12,159 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 00:57:12,160 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 00:57:12,185 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 (27)] Forceful destruction successful, exit code 0 [2023-02-15 00:57:12,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 00:57:12,360 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-02-15 00:57:12,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 00:57:12,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1314778088, now seen corresponding path program 1 times [2023-02-15 00:57:12,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 00:57:12,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1710730573] [2023-02-15 00:57:12,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 00:57:12,362 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 00:57:12,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 00:57:12,363 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 00:57:12,383 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 (28)] Waiting until timeout for monitored process [2023-02-15 00:57:12,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 00:57:12,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-15 00:57:12,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 00:57:12,500 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-15 00:57:12,501 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 00:57:12,557 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-15 00:57:12,557 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 00:57:12,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1710730573] [2023-02-15 00:57:12,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1710730573] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 00:57:12,557 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 00:57:12,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-02-15 00:57:12,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014445768] [2023-02-15 00:57:12,557 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 00:57:12,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-15 00:57:12,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 00:57:12,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-15 00:57:12,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-02-15 00:57:12,558 INFO L87 Difference]: Start difference. First operand 236 states and 295 transitions. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:57:12,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 00:57:12,628 INFO L93 Difference]: Finished difference Result 283 states and 344 transitions. [2023-02-15 00:57:12,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 00:57:12,629 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2023-02-15 00:57:12,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 00:57:12,630 INFO L225 Difference]: With dead ends: 283 [2023-02-15 00:57:12,630 INFO L226 Difference]: Without dead ends: 254 [2023-02-15 00:57:12,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-02-15 00:57:12,630 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 31 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 00:57:12,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 215 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 00:57:12,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2023-02-15 00:57:12,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 238. [2023-02-15 00:57:12,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 232 states have (on average 1.2887931034482758) internal successors, (299), 237 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:57:12,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 299 transitions. [2023-02-15 00:57:12,639 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 299 transitions. Word has length 28 [2023-02-15 00:57:12,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 00:57:12,639 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 299 transitions. [2023-02-15 00:57:12,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:57:12,640 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 299 transitions. [2023-02-15 00:57:12,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-15 00:57:12,640 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 00:57:12,640 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] [2023-02-15 00:57:12,650 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 (28)] Forceful destruction successful, exit code 0 [2023-02-15 00:57:12,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 00:57:12,848 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-02-15 00:57:12,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 00:57:12,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1174230345, now seen corresponding path program 1 times [2023-02-15 00:57:12,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 00:57:12,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1098280959] [2023-02-15 00:57:12,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 00:57:12,848 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 00:57:12,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 00:57:12,850 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 00:57:12,850 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 (29)] Waiting until timeout for monitored process [2023-02-15 00:57:12,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 00:57:12,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 15 conjunts are in the unsatisfiable core [2023-02-15 00:57:12,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 00:57:15,179 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-15 00:57:15,179 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 00:57:15,179 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 00:57:15,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1098280959] [2023-02-15 00:57:15,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1098280959] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 00:57:15,179 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 00:57:15,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 00:57:15,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098009716] [2023-02-15 00:57:15,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 00:57:15,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 00:57:15,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 00:57:15,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 00:57:15,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=11, Unknown=1, NotChecked=0, Total=20 [2023-02-15 00:57:15,180 INFO L87 Difference]: Start difference. First operand 238 states and 299 transitions. Second operand has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:57:17,185 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-15 00:57:19,192 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-15 00:57:21,196 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-15 00:57:23,200 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-15 00:57:25,204 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] [2023-02-15 00:57:25,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 00:57:25,271 INFO L93 Difference]: Finished difference Result 237 states and 298 transitions. [2023-02-15 00:57:25,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-15 00:57:25,272 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2023-02-15 00:57:25,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 00:57:25,273 INFO L225 Difference]: With dead ends: 237 [2023-02-15 00:57:25,273 INFO L226 Difference]: Without dead ends: 220 [2023-02-15 00:57:25,273 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=8, Invalid=11, Unknown=1, NotChecked=0, Total=20 [2023-02-15 00:57:25,273 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 12 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2023-02-15 00:57:25,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 60 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 5 Unknown, 0 Unchecked, 10.1s Time] [2023-02-15 00:57:25,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2023-02-15 00:57:25,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 219. [2023-02-15 00:57:25,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 214 states have (on average 1.266355140186916) internal successors, (271), 218 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:57:25,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 271 transitions. [2023-02-15 00:57:25,276 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 271 transitions. Word has length 28 [2023-02-15 00:57:25,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 00:57:25,277 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 271 transitions. [2023-02-15 00:57:25,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:57:25,277 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 271 transitions. [2023-02-15 00:57:25,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-15 00:57:25,277 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 00:57:25,277 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 00:57:25,291 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 (29)] Forceful destruction successful, exit code 0 [2023-02-15 00:57:25,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 00:57:25,486 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-02-15 00:57:25,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 00:57:25,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1252738474, now seen corresponding path program 1 times [2023-02-15 00:57:25,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 00:57:25,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1929404783] [2023-02-15 00:57:25,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 00:57:25,487 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 00:57:25,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 00:57:25,488 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 00:57:25,489 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 (30)] Waiting until timeout for monitored process [2023-02-15 00:57:25,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 00:57:25,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 11 conjunts are in the unsatisfiable core [2023-02-15 00:57:25,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 00:57:25,691 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-15 00:57:25,691 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 00:57:25,803 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-15 00:57:25,803 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 00:57:25,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1929404783] [2023-02-15 00:57:25,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1929404783] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 00:57:25,803 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 00:57:25,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2023-02-15 00:57:25,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943952611] [2023-02-15 00:57:25,803 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 00:57:25,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-02-15 00:57:25,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 00:57:25,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-02-15 00:57:25,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-02-15 00:57:25,804 INFO L87 Difference]: Start difference. First operand 219 states and 271 transitions. Second operand has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:57:26,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 00:57:26,014 INFO L93 Difference]: Finished difference Result 282 states and 341 transitions. [2023-02-15 00:57:26,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-15 00:57:26,015 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2023-02-15 00:57:26,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 00:57:26,015 INFO L225 Difference]: With dead ends: 282 [2023-02-15 00:57:26,015 INFO L226 Difference]: Without dead ends: 250 [2023-02-15 00:57:26,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2023-02-15 00:57:26,016 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 110 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 00:57:26,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 231 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 00:57:26,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2023-02-15 00:57:26,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 219. [2023-02-15 00:57:26,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 214 states have (on average 1.2616822429906542) internal successors, (270), 218 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:57:26,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 270 transitions. [2023-02-15 00:57:26,019 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 270 transitions. Word has length 28 [2023-02-15 00:57:26,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 00:57:26,019 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 270 transitions. [2023-02-15 00:57:26,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:57:26,019 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 270 transitions. [2023-02-15 00:57:26,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-02-15 00:57:26,019 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 00:57:26,019 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 00:57:26,040 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 (30)] Forceful destruction successful, exit code 0 [2023-02-15 00:57:26,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 00:57:26,220 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-02-15 00:57:26,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 00:57:26,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1138703979, now seen corresponding path program 2 times [2023-02-15 00:57:26,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 00:57:26,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [133639046] [2023-02-15 00:57:26,221 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 00:57:26,221 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 [2023-02-15 00:57:26,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 00:57:26,222 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 00:57:26,223 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 (31)] Waiting until timeout for monitored process [2023-02-15 00:57:26,330 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 00:57:26,330 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 00:57:26,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 12 conjunts are in the unsatisfiable core [2023-02-15 00:57:26,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 00:57:26,449 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 00:57:26,449 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 00:57:26,665 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 27 treesize of output 23 [2023-02-15 00:57:26,858 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 00:57:26,858 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 00:57:26,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [133639046] [2023-02-15 00:57:26,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [133639046] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 00:57:26,858 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 00:57:26,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-02-15 00:57:26,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156067157] [2023-02-15 00:57:26,859 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 00:57:26,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-02-15 00:57:26,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 00:57:26,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-02-15 00:57:26,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2023-02-15 00:57:26,859 INFO L87 Difference]: Start difference. First operand 219 states and 270 transitions. Second operand has 16 states, 15 states have (on average 3.6) internal successors, (54), 16 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:57:28,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 00:57:28,573 INFO L93 Difference]: Finished difference Result 529 states and 650 transitions. [2023-02-15 00:57:28,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-02-15 00:57:28,577 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.6) internal successors, (54), 16 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2023-02-15 00:57:28,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 00:57:28,579 INFO L225 Difference]: With dead ends: 529 [2023-02-15 00:57:28,579 INFO L226 Difference]: Without dead ends: 529 [2023-02-15 00:57:28,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=266, Invalid=726, Unknown=0, NotChecked=0, Total=992 [2023-02-15 00:57:28,580 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 630 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 630 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-02-15 00:57:28,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [630 Valid, 300 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-02-15 00:57:28,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2023-02-15 00:57:28,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 233. [2023-02-15 00:57:28,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 228 states have (on average 1.2763157894736843) internal successors, (291), 232 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:57:28,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 291 transitions. [2023-02-15 00:57:28,589 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 291 transitions. Word has length 29 [2023-02-15 00:57:28,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 00:57:28,589 INFO L495 AbstractCegarLoop]: Abstraction has 233 states and 291 transitions. [2023-02-15 00:57:28,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.6) internal successors, (54), 16 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:57:28,589 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 291 transitions. [2023-02-15 00:57:28,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-02-15 00:57:28,590 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 00:57:28,590 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 00:57:28,602 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 (31)] Forceful destruction successful, exit code 0 [2023-02-15 00:57:28,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 00:57:28,800 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-02-15 00:57:28,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 00:57:28,801 INFO L85 PathProgramCache]: Analyzing trace with hash 550362914, now seen corresponding path program 2 times [2023-02-15 00:57:28,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 00:57:28,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [76339991] [2023-02-15 00:57:28,801 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 00:57:28,801 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 00:57:28,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 00:57:28,805 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 00:57:28,807 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 (32)] Waiting until timeout for monitored process [2023-02-15 00:57:28,890 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 00:57:28,890 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 00:57:28,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 19 conjunts are in the unsatisfiable core [2023-02-15 00:57:28,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 00:57:28,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 00:57:28,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 00:57:28,926 INFO L321 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-02-15 00:57:28,927 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 22 [2023-02-15 00:57:28,934 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 14 treesize of output 12 [2023-02-15 00:57:29,236 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 00:57:29,236 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 00:57:30,304 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 00:57:30,390 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 00:57:30,390 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 00:57:30,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [76339991] [2023-02-15 00:57:30,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [76339991] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 00:57:30,391 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 00:57:30,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2023-02-15 00:57:30,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471380242] [2023-02-15 00:57:30,391 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 00:57:30,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-02-15 00:57:30,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 00:57:30,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-02-15 00:57:30,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=272, Unknown=0, NotChecked=0, Total=380 [2023-02-15 00:57:30,392 INFO L87 Difference]: Start difference. First operand 233 states and 291 transitions. Second operand has 20 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 20 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:57:36,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 00:57:36,606 INFO L93 Difference]: Finished difference Result 703 states and 904 transitions. [2023-02-15 00:57:36,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-02-15 00:57:36,608 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 20 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2023-02-15 00:57:36,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 00:57:36,609 INFO L225 Difference]: With dead ends: 703 [2023-02-15 00:57:36,609 INFO L226 Difference]: Without dead ends: 703 [2023-02-15 00:57:36,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=404, Invalid=786, Unknown=0, NotChecked=0, Total=1190 [2023-02-15 00:57:36,610 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 902 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 902 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-02-15 00:57:36,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [902 Valid, 424 Invalid, 506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-02-15 00:57:36,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2023-02-15 00:57:36,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 281. [2023-02-15 00:57:36,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 276 states have (on average 1.2717391304347827) internal successors, (351), 280 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:57:36,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 351 transitions. [2023-02-15 00:57:36,614 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 351 transitions. Word has length 29 [2023-02-15 00:57:36,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 00:57:36,614 INFO L495 AbstractCegarLoop]: Abstraction has 281 states and 351 transitions. [2023-02-15 00:57:36,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 20 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:57:36,615 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 351 transitions. [2023-02-15 00:57:36,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-02-15 00:57:36,615 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 00:57:36,615 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 00:57:36,652 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 (32)] Forceful destruction successful, exit code 0 [2023-02-15 00:57:36,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 00:57:36,816 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-02-15 00:57:36,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 00:57:36,816 INFO L85 PathProgramCache]: Analyzing trace with hash -112944909, now seen corresponding path program 2 times [2023-02-15 00:57:36,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 00:57:36,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1324728642] [2023-02-15 00:57:36,817 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 00:57:36,817 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 00:57:36,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 00:57:36,835 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 00:57:36,836 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 (33)] Waiting until timeout for monitored process [2023-02-15 00:57:36,927 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 00:57:36,927 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 00:57:36,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 12 conjunts are in the unsatisfiable core [2023-02-15 00:57:36,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 00:57:37,057 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-15 00:57:37,057 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 00:57:37,310 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 27 treesize of output 23 [2023-02-15 00:57:37,436 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-15 00:57:37,436 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 00:57:37,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1324728642] [2023-02-15 00:57:37,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1324728642] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 00:57:37,436 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 00:57:37,437 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-02-15 00:57:37,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439093156] [2023-02-15 00:57:37,437 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 00:57:37,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-15 00:57:37,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 00:57:37,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-15 00:57:37,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-02-15 00:57:37,438 INFO L87 Difference]: Start difference. First operand 281 states and 351 transitions. Second operand has 12 states, 11 states have (on average 5.454545454545454) internal successors, (60), 12 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:57:38,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 00:57:38,499 INFO L93 Difference]: Finished difference Result 845 states and 1079 transitions. [2023-02-15 00:57:38,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-02-15 00:57:38,500 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.454545454545454) internal successors, (60), 12 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2023-02-15 00:57:38,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 00:57:38,502 INFO L225 Difference]: With dead ends: 845 [2023-02-15 00:57:38,502 INFO L226 Difference]: Without dead ends: 845 [2023-02-15 00:57:38,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=148, Invalid=452, Unknown=0, NotChecked=0, Total=600 [2023-02-15 00:57:38,503 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 457 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 457 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-02-15 00:57:38,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [457 Valid, 284 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-02-15 00:57:38,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2023-02-15 00:57:38,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 320. [2023-02-15 00:57:38,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 315 states have (on average 1.273015873015873) internal successors, (401), 319 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:57:38,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 401 transitions. [2023-02-15 00:57:38,510 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 401 transitions. Word has length 32 [2023-02-15 00:57:38,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 00:57:38,511 INFO L495 AbstractCegarLoop]: Abstraction has 320 states and 401 transitions. [2023-02-15 00:57:38,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.454545454545454) internal successors, (60), 12 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:57:38,511 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 401 transitions. [2023-02-15 00:57:38,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-02-15 00:57:38,511 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 00:57:38,511 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 00:57:38,520 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 (33)] Forceful destruction successful, exit code 0 [2023-02-15 00:57:38,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 00:57:38,719 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-02-15 00:57:38,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 00:57:38,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1409463453, now seen corresponding path program 3 times [2023-02-15 00:57:38,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 00:57:38,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [345987688] [2023-02-15 00:57:38,720 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-15 00:57:38,720 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 00:57:38,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 00:57:38,741 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 00:57:38,772 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 (34)] Waiting until timeout for monitored process [2023-02-15 00:57:38,880 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-02-15 00:57:38,880 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 00:57:38,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 24 conjunts are in the unsatisfiable core [2023-02-15 00:57:38,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 00:57:38,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 00:57:38,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 00:57:38,917 INFO L321 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-02-15 00:57:38,917 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 22 [2023-02-15 00:57:38,921 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 14 treesize of output 12 [2023-02-15 00:57:39,239 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-02-15 00:57:39,239 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 00:57:40,220 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 00:57:40,277 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-02-15 00:57:40,277 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 00:57:40,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [345987688] [2023-02-15 00:57:40,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [345987688] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 00:57:40,277 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 00:57:40,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2023-02-15 00:57:40,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897487452] [2023-02-15 00:57:40,277 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 00:57:40,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-02-15 00:57:40,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 00:57:40,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-02-15 00:57:40,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2023-02-15 00:57:40,278 INFO L87 Difference]: Start difference. First operand 320 states and 401 transitions. Second operand has 18 states, 17 states have (on average 3.235294117647059) internal successors, (55), 18 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:57:42,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 00:57:42,754 INFO L93 Difference]: Finished difference Result 643 states and 780 transitions. [2023-02-15 00:57:42,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-02-15 00:57:42,756 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.235294117647059) internal successors, (55), 18 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2023-02-15 00:57:42,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 00:57:42,757 INFO L225 Difference]: With dead ends: 643 [2023-02-15 00:57:42,757 INFO L226 Difference]: Without dead ends: 643 [2023-02-15 00:57:42,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=300, Invalid=692, Unknown=0, NotChecked=0, Total=992 [2023-02-15 00:57:42,758 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 548 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 548 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-02-15 00:57:42,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [548 Valid, 228 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-02-15 00:57:42,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2023-02-15 00:57:42,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 396. [2023-02-15 00:57:42,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 391 states have (on average 1.3222506393861893) internal successors, (517), 395 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:57:42,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 517 transitions. [2023-02-15 00:57:42,764 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 517 transitions. Word has length 33 [2023-02-15 00:57:42,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 00:57:42,764 INFO L495 AbstractCegarLoop]: Abstraction has 396 states and 517 transitions. [2023-02-15 00:57:42,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.235294117647059) internal successors, (55), 18 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:57:42,765 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 517 transitions. [2023-02-15 00:57:42,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-02-15 00:57:42,765 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 00:57:42,765 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 00:57:42,783 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 (34)] Ended with exit code 0 [2023-02-15 00:57:42,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 00:57:42,973 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-02-15 00:57:42,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 00:57:42,973 INFO L85 PathProgramCache]: Analyzing trace with hash -524293744, now seen corresponding path program 3 times [2023-02-15 00:57:42,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 00:57:42,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [324273283] [2023-02-15 00:57:42,974 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-15 00:57:42,974 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 00:57:42,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 00:57:42,978 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 00:57:42,980 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 (35)] Waiting until timeout for monitored process [2023-02-15 00:57:43,183 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-02-15 00:57:43,184 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 00:57:43,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 30 conjunts are in the unsatisfiable core [2023-02-15 00:57:43,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 00:57:43,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 00:57:43,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 00:57:43,230 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-02-15 00:57:43,230 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 22 [2023-02-15 00:57:43,246 INFO L321 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2023-02-15 00:57:43,247 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 44 treesize of output 45 [2023-02-15 00:57:43,740 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-15 00:57:43,740 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 00:57:45,849 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 1 proven. 24 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-15 00:57:45,849 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 00:57:45,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [324273283] [2023-02-15 00:57:45,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [324273283] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 00:57:45,849 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 00:57:45,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2023-02-15 00:57:45,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176909108] [2023-02-15 00:57:45,849 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 00:57:45,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-02-15 00:57:45,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 00:57:45,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-02-15 00:57:45,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=329, Unknown=0, NotChecked=0, Total=420 [2023-02-15 00:57:45,850 INFO L87 Difference]: Start difference. First operand 396 states and 517 transitions. Second operand has 21 states, 21 states have (on average 3.7142857142857144) internal successors, (78), 21 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:57:48,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 00:57:48,835 INFO L93 Difference]: Finished difference Result 733 states and 971 transitions. [2023-02-15 00:57:48,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-02-15 00:57:48,837 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.7142857142857144) internal successors, (78), 21 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2023-02-15 00:57:48,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 00:57:48,838 INFO L225 Difference]: With dead ends: 733 [2023-02-15 00:57:48,838 INFO L226 Difference]: Without dead ends: 707 [2023-02-15 00:57:48,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=277, Invalid=779, Unknown=0, NotChecked=0, Total=1056 [2023-02-15 00:57:48,839 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 536 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 536 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-02-15 00:57:48,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [536 Valid, 305 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-02-15 00:57:48,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2023-02-15 00:57:48,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 643. [2023-02-15 00:57:48,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 638 states have (on average 1.3495297805642634) internal successors, (861), 642 states have internal predecessors, (861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:57:48,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 861 transitions. [2023-02-15 00:57:48,848 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 861 transitions. Word has length 40 [2023-02-15 00:57:48,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 00:57:48,848 INFO L495 AbstractCegarLoop]: Abstraction has 643 states and 861 transitions. [2023-02-15 00:57:48,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.7142857142857144) internal successors, (78), 21 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:57:48,849 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 861 transitions. [2023-02-15 00:57:48,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-02-15 00:57:48,849 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 00:57:48,849 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 00:57:48,859 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 (35)] Ended with exit code 0 [2023-02-15 00:57:49,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 00:57:49,059 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-02-15 00:57:49,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 00:57:49,059 INFO L85 PathProgramCache]: Analyzing trace with hash 829184327, now seen corresponding path program 1 times [2023-02-15 00:57:49,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 00:57:49,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1188813961] [2023-02-15 00:57:49,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 00:57:49,060 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 00:57:49,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 00:57:49,061 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 00:57:49,063 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 (36)] Waiting until timeout for monitored process [2023-02-15 00:57:49,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 00:57:49,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 17 conjunts are in the unsatisfiable core [2023-02-15 00:57:49,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 00:57:49,275 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2023-02-15 00:57:49,275 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 2 case distinctions, treesize of input 14 treesize of output 29 [2023-02-15 00:57:49,612 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-15 00:57:49,612 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 00:57:50,128 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-15 00:57:50,128 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 00:57:50,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1188813961] [2023-02-15 00:57:50,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1188813961] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 00:57:50,129 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 00:57:50,129 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2023-02-15 00:57:50,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675406374] [2023-02-15 00:57:50,129 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 00:57:50,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-02-15 00:57:50,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 00:57:50,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-02-15 00:57:50,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-02-15 00:57:50,130 INFO L87 Difference]: Start difference. First operand 643 states and 861 transitions. Second operand has 14 states, 13 states have (on average 6.153846153846154) internal successors, (80), 14 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:57:51,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 00:57:51,010 INFO L93 Difference]: Finished difference Result 742 states and 983 transitions. [2023-02-15 00:57:51,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-15 00:57:51,011 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 6.153846153846154) internal successors, (80), 14 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2023-02-15 00:57:51,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 00:57:51,013 INFO L225 Difference]: With dead ends: 742 [2023-02-15 00:57:51,013 INFO L226 Difference]: Without dead ends: 713 [2023-02-15 00:57:51,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2023-02-15 00:57:51,013 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 312 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-15 00:57:51,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [312 Valid, 193 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-15 00:57:51,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2023-02-15 00:57:51,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 647. [2023-02-15 00:57:51,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 647 states, 642 states have (on average 1.35202492211838) internal successors, (868), 646 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:57:51,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 868 transitions. [2023-02-15 00:57:51,022 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 868 transitions. Word has length 41 [2023-02-15 00:57:51,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 00:57:51,022 INFO L495 AbstractCegarLoop]: Abstraction has 647 states and 868 transitions. [2023-02-15 00:57:51,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 6.153846153846154) internal successors, (80), 14 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:57:51,022 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 868 transitions. [2023-02-15 00:57:51,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-02-15 00:57:51,023 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 00:57:51,023 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 1, 1, 1, 1, 1, 1] [2023-02-15 00:57:51,031 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 (36)] Forceful destruction successful, exit code 0 [2023-02-15 00:57:51,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 00:57:51,231 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-02-15 00:57:51,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 00:57:51,231 INFO L85 PathProgramCache]: Analyzing trace with hash -523698423, now seen corresponding path program 3 times [2023-02-15 00:57:51,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 00:57:51,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [976944984] [2023-02-15 00:57:51,231 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-15 00:57:51,231 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 00:57:51,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 00:57:51,233 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 00:57:51,238 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 (37)] Waiting until timeout for monitored process [2023-02-15 00:57:51,482 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2023-02-15 00:57:51,482 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 00:57:51,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 25 conjunts are in the unsatisfiable core [2023-02-15 00:57:51,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 00:57:51,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 00:57:51,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 00:57:51,525 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-02-15 00:57:51,525 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 22 [2023-02-15 00:57:51,541 INFO L321 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2023-02-15 00:57:51,541 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 44 treesize of output 45 [2023-02-15 00:57:52,178 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 00:57:52,179 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 00:57:54,582 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 00:57:54,583 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 00:57:54,735 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 00:57:54,736 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 00:57:54,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [976944984] [2023-02-15 00:57:54,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [976944984] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 00:57:54,736 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 00:57:54,736 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 29 [2023-02-15 00:57:54,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683711843] [2023-02-15 00:57:54,736 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 00:57:54,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-02-15 00:57:54,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 00:57:54,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-02-15 00:57:54,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=637, Unknown=0, NotChecked=0, Total=870 [2023-02-15 00:57:54,737 INFO L87 Difference]: Start difference. First operand 647 states and 868 transitions. Second operand has 30 states, 29 states have (on average 3.1724137931034484) internal successors, (92), 30 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:58:18,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 00:58:18,517 INFO L93 Difference]: Finished difference Result 7849 states and 10851 transitions. [2023-02-15 00:58:18,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-02-15 00:58:18,518 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 3.1724137931034484) internal successors, (92), 30 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2023-02-15 00:58:18,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 00:58:18,534 INFO L225 Difference]: With dead ends: 7849 [2023-02-15 00:58:18,535 INFO L226 Difference]: Without dead ends: 7849 [2023-02-15 00:58:18,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 889 ImplicationChecksByTransitivity, 20.1s TimeCoverageRelationStatistics Valid=1166, Invalid=2494, Unknown=0, NotChecked=0, Total=3660 [2023-02-15 00:58:18,536 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 3581 mSDsluCounter, 1828 mSDsCounter, 0 mSdLazyCounter, 1891 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3581 SdHoareTripleChecker+Valid, 1981 SdHoareTripleChecker+Invalid, 1906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1891 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2023-02-15 00:58:18,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3581 Valid, 1981 Invalid, 1906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1891 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2023-02-15 00:58:18,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7849 states. [2023-02-15 00:58:18,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7849 to 743. [2023-02-15 00:58:18,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 743 states, 738 states have (on average 1.3387533875338753) internal successors, (988), 742 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:58:18,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 988 transitions. [2023-02-15 00:58:18,600 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 988 transitions. Word has length 47 [2023-02-15 00:58:18,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 00:58:18,600 INFO L495 AbstractCegarLoop]: Abstraction has 743 states and 988 transitions. [2023-02-15 00:58:18,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 3.1724137931034484) internal successors, (92), 30 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:58:18,600 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 988 transitions. [2023-02-15 00:58:18,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-02-15 00:58:18,601 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 00:58:18,601 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 00:58:18,629 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 (37)] Forceful destruction successful, exit code 0 [2023-02-15 00:58:18,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 00:58:18,809 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-02-15 00:58:18,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 00:58:18,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1293342909, now seen corresponding path program 4 times [2023-02-15 00:58:18,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 00:58:18,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1768703062] [2023-02-15 00:58:18,810 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-15 00:58:18,810 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 00:58:18,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 00:58:18,811 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 00:58:18,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2023-02-15 00:58:18,925 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-15 00:58:18,925 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 00:58:18,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 14 conjunts are in the unsatisfiable core [2023-02-15 00:58:18,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 00:58:19,130 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 42 proven. 34 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-02-15 00:58:19,130 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 00:58:19,476 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 42 proven. 34 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-02-15 00:58:19,476 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 00:58:19,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1768703062] [2023-02-15 00:58:19,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1768703062] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 00:58:19,476 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 00:58:19,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 23 [2023-02-15 00:58:19,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018645488] [2023-02-15 00:58:19,477 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 00:58:19,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-02-15 00:58:19,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 00:58:19,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-02-15 00:58:19,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=410, Unknown=0, NotChecked=0, Total=506 [2023-02-15 00:58:19,478 INFO L87 Difference]: Start difference. First operand 743 states and 988 transitions. Second operand has 23 states, 23 states have (on average 3.4782608695652173) internal successors, (80), 23 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:58:20,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 00:58:20,733 INFO L93 Difference]: Finished difference Result 1536 states and 1940 transitions. [2023-02-15 00:58:20,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-02-15 00:58:20,734 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.4782608695652173) internal successors, (80), 23 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2023-02-15 00:58:20,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 00:58:20,737 INFO L225 Difference]: With dead ends: 1536 [2023-02-15 00:58:20,737 INFO L226 Difference]: Without dead ends: 1400 [2023-02-15 00:58:20,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 393 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=478, Invalid=1502, Unknown=0, NotChecked=0, Total=1980 [2023-02-15 00:58:20,738 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 646 mSDsluCounter, 785 mSDsCounter, 0 mSdLazyCounter, 476 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 646 SdHoareTripleChecker+Valid, 857 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-02-15 00:58:20,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [646 Valid, 857 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 476 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-02-15 00:58:20,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1400 states. [2023-02-15 00:58:20,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1400 to 1041. [2023-02-15 00:58:20,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1041 states, 1036 states have (on average 1.3474903474903475) internal successors, (1396), 1040 states have internal predecessors, (1396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:58:20,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1041 states to 1041 states and 1396 transitions. [2023-02-15 00:58:20,770 INFO L78 Accepts]: Start accepts. Automaton has 1041 states and 1396 transitions. Word has length 49 [2023-02-15 00:58:20,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 00:58:20,770 INFO L495 AbstractCegarLoop]: Abstraction has 1041 states and 1396 transitions. [2023-02-15 00:58:20,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.4782608695652173) internal successors, (80), 23 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:58:20,771 INFO L276 IsEmpty]: Start isEmpty. Operand 1041 states and 1396 transitions. [2023-02-15 00:58:20,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-02-15 00:58:20,771 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 00:58:20,772 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 00:58:20,779 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 (38)] Forceful destruction successful, exit code 0 [2023-02-15 00:58:20,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 00:58:20,980 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-02-15 00:58:20,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 00:58:20,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1022969014, now seen corresponding path program 4 times [2023-02-15 00:58:20,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 00:58:20,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [876067695] [2023-02-15 00:58:20,981 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-15 00:58:20,981 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 00:58:20,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 00:58:20,982 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 00:58:20,984 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 (39)] Waiting until timeout for monitored process [2023-02-15 00:58:21,140 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-15 00:58:21,141 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 00:58:21,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 17 conjunts are in the unsatisfiable core [2023-02-15 00:58:21,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 00:58:21,440 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 9 proven. 48 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-15 00:58:21,440 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 00:58:21,946 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 9 proven. 48 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-15 00:58:21,946 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 00:58:21,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [876067695] [2023-02-15 00:58:21,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [876067695] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 00:58:21,946 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 00:58:21,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 24 [2023-02-15 00:58:21,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149163023] [2023-02-15 00:58:21,946 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 00:58:21,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-02-15 00:58:21,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 00:58:21,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-02-15 00:58:21,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=456, Unknown=0, NotChecked=0, Total=552 [2023-02-15 00:58:21,947 INFO L87 Difference]: Start difference. First operand 1041 states and 1396 transitions. Second operand has 24 states, 24 states have (on average 4.166666666666667) internal successors, (100), 24 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:58:22,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 00:58:22,873 INFO L93 Difference]: Finished difference Result 1742 states and 2343 transitions. [2023-02-15 00:58:22,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-02-15 00:58:22,874 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.166666666666667) internal successors, (100), 24 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2023-02-15 00:58:22,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 00:58:22,877 INFO L225 Difference]: With dead ends: 1742 [2023-02-15 00:58:22,877 INFO L226 Difference]: Without dead ends: 1531 [2023-02-15 00:58:22,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=299, Invalid=1107, Unknown=0, NotChecked=0, Total=1406 [2023-02-15 00:58:22,878 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 465 mSDsluCounter, 908 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 465 SdHoareTripleChecker+Valid, 991 SdHoareTripleChecker+Invalid, 503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-02-15 00:58:22,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [465 Valid, 991 Invalid, 503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-02-15 00:58:22,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1531 states. [2023-02-15 00:58:22,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1531 to 1334. [2023-02-15 00:58:22,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1334 states, 1329 states have (on average 1.346877351392024) internal successors, (1790), 1333 states have internal predecessors, (1790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:58:22,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1334 states to 1334 states and 1790 transitions. [2023-02-15 00:58:22,890 INFO L78 Accepts]: Start accepts. Automaton has 1334 states and 1790 transitions. Word has length 52 [2023-02-15 00:58:22,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 00:58:22,891 INFO L495 AbstractCegarLoop]: Abstraction has 1334 states and 1790 transitions. [2023-02-15 00:58:22,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.166666666666667) internal successors, (100), 24 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:58:22,891 INFO L276 IsEmpty]: Start isEmpty. Operand 1334 states and 1790 transitions. [2023-02-15 00:58:22,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-02-15 00:58:22,892 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 00:58:22,892 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 00:58:22,900 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 (39)] Ended with exit code 0 [2023-02-15 00:58:23,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 00:58:23,100 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-02-15 00:58:23,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 00:58:23,101 INFO L85 PathProgramCache]: Analyzing trace with hash -199246284, now seen corresponding path program 3 times [2023-02-15 00:58:23,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 00:58:23,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [400867755] [2023-02-15 00:58:23,101 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-15 00:58:23,101 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 00:58:23,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 00:58:23,102 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 00:58:23,110 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 (40)] Waiting until timeout for monitored process [2023-02-15 00:58:23,339 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2023-02-15 00:58:23,339 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 00:58:23,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 25 conjunts are in the unsatisfiable core [2023-02-15 00:58:23,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 00:58:23,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 00:58:23,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 00:58:23,373 INFO L321 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-02-15 00:58:23,373 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 22 [2023-02-15 00:58:23,379 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 14 treesize of output 12 [2023-02-15 00:58:24,102 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 00:58:24,102 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 00:58:26,972 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 00:58:27,096 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 00:58:27,096 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 00:58:27,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [400867755] [2023-02-15 00:58:27,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [400867755] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 00:58:27,096 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 00:58:27,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 31 [2023-02-15 00:58:27,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485163686] [2023-02-15 00:58:27,096 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 00:58:27,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-02-15 00:58:27,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 00:58:27,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-02-15 00:58:27,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2023-02-15 00:58:27,097 INFO L87 Difference]: Start difference. First operand 1334 states and 1790 transitions. Second operand has 32 states, 31 states have (on average 3.3225806451612905) internal successors, (103), 32 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:59:46,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 00:59:46,276 INFO L93 Difference]: Finished difference Result 8815 states and 12649 transitions. [2023-02-15 00:59:46,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-02-15 00:59:46,277 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 3.3225806451612905) internal successors, (103), 32 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2023-02-15 00:59:46,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 00:59:46,305 INFO L225 Difference]: With dead ends: 8815 [2023-02-15 00:59:46,312 INFO L226 Difference]: Without dead ends: 8815 [2023-02-15 00:59:46,324 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 999 ImplicationChecksByTransitivity, 77.4s TimeCoverageRelationStatistics Valid=1347, Invalid=2811, Unknown=2, NotChecked=0, Total=4160 [2023-02-15 00:59:46,324 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 4212 mSDsluCounter, 1407 mSDsCounter, 0 mSdLazyCounter, 1792 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4212 SdHoareTripleChecker+Valid, 1519 SdHoareTripleChecker+Invalid, 1809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-02-15 00:59:46,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4212 Valid, 1519 Invalid, 1809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1792 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-02-15 00:59:46,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8815 states. [2023-02-15 00:59:46,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8815 to 1526. [2023-02-15 00:59:46,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1526 states, 1521 states have (on average 1.3346482577251808) internal successors, (2030), 1525 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:59:46,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1526 states to 1526 states and 2030 transitions. [2023-02-15 00:59:46,387 INFO L78 Accepts]: Start accepts. Automaton has 1526 states and 2030 transitions. Word has length 53 [2023-02-15 00:59:46,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 00:59:46,388 INFO L495 AbstractCegarLoop]: Abstraction has 1526 states and 2030 transitions. [2023-02-15 00:59:46,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 3.3225806451612905) internal successors, (103), 32 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:59:46,388 INFO L276 IsEmpty]: Start isEmpty. Operand 1526 states and 2030 transitions. [2023-02-15 00:59:46,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-02-15 00:59:46,389 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 00:59:46,389 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 00:59:46,398 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 (40)] Forceful destruction successful, exit code 0 [2023-02-15 00:59:46,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 00:59:46,599 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-02-15 00:59:46,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 00:59:46,599 INFO L85 PathProgramCache]: Analyzing trace with hash -878193103, now seen corresponding path program 2 times [2023-02-15 00:59:46,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 00:59:46,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [202717298] [2023-02-15 00:59:46,600 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 00:59:46,600 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 00:59:46,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 00:59:46,601 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 00:59:46,603 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 (41)] Waiting until timeout for monitored process [2023-02-15 00:59:46,761 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 00:59:46,761 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 00:59:46,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 20 conjunts are in the unsatisfiable core [2023-02-15 00:59:46,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 00:59:46,819 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2023-02-15 00:59:46,819 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 2 case distinctions, treesize of input 14 treesize of output 29 [2023-02-15 00:59:47,386 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-15 00:59:47,387 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 00:59:48,876 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 9 proven. 41 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-15 00:59:48,876 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 00:59:48,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [202717298] [2023-02-15 00:59:48,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [202717298] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 00:59:48,877 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 00:59:48,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2023-02-15 00:59:48,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999661793] [2023-02-15 00:59:48,877 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 00:59:48,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-02-15 00:59:48,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 00:59:48,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-02-15 00:59:48,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2023-02-15 00:59:48,878 INFO L87 Difference]: Start difference. First operand 1526 states and 2030 transitions. Second operand has 19 states, 18 states have (on average 6.111111111111111) internal successors, (110), 19 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:59:50,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 00:59:50,561 INFO L93 Difference]: Finished difference Result 1798 states and 2383 transitions. [2023-02-15 00:59:50,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-02-15 00:59:50,562 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 6.111111111111111) internal successors, (110), 19 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2023-02-15 00:59:50,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 00:59:50,565 INFO L225 Difference]: With dead ends: 1798 [2023-02-15 00:59:50,565 INFO L226 Difference]: Without dead ends: 1659 [2023-02-15 00:59:50,565 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 92 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=169, Invalid=587, Unknown=0, NotChecked=0, Total=756 [2023-02-15 00:59:50,566 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 550 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 487 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 550 SdHoareTripleChecker+Valid, 518 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-02-15 00:59:50,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [550 Valid, 518 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 487 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-02-15 00:59:50,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1659 states. [2023-02-15 00:59:50,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1659 to 1420. [2023-02-15 00:59:50,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1420 states, 1415 states have (on average 1.3385159010600707) internal successors, (1894), 1419 states have internal predecessors, (1894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:59:50,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1420 states to 1420 states and 1894 transitions. [2023-02-15 00:59:50,581 INFO L78 Accepts]: Start accepts. Automaton has 1420 states and 1894 transitions. Word has length 56 [2023-02-15 00:59:50,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 00:59:50,581 INFO L495 AbstractCegarLoop]: Abstraction has 1420 states and 1894 transitions. [2023-02-15 00:59:50,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 6.111111111111111) internal successors, (110), 19 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:59:50,582 INFO L276 IsEmpty]: Start isEmpty. Operand 1420 states and 1894 transitions. [2023-02-15 00:59:50,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-02-15 00:59:50,583 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 00:59:50,583 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 00:59:50,596 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 (41)] Forceful destruction successful, exit code 0 [2023-02-15 00:59:50,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 00:59:50,792 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-02-15 00:59:50,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 00:59:50,792 INFO L85 PathProgramCache]: Analyzing trace with hash -564407577, now seen corresponding path program 5 times [2023-02-15 00:59:50,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 00:59:50,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [843038424] [2023-02-15 00:59:50,793 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-15 00:59:50,793 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 00:59:50,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 00:59:50,794 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 00:59:50,798 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 (42)] Waiting until timeout for monitored process [2023-02-15 00:59:51,022 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2023-02-15 00:59:51,023 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 00:59:51,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 16 conjunts are in the unsatisfiable core [2023-02-15 00:59:51,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 00:59:51,293 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-15 00:59:51,293 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 00:59:51,856 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 27 treesize of output 23 [2023-02-15 00:59:52,269 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-15 00:59:52,269 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 00:59:52,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [843038424] [2023-02-15 00:59:52,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [843038424] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 00:59:52,269 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 00:59:52,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2023-02-15 00:59:52,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579033514] [2023-02-15 00:59:52,269 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 00:59:52,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-02-15 00:59:52,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 00:59:52,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-02-15 00:59:52,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2023-02-15 00:59:52,270 INFO L87 Difference]: Start difference. First operand 1420 states and 1894 transitions. Second operand has 20 states, 19 states have (on average 5.684210526315789) internal successors, (108), 20 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:59:56,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 00:59:56,199 INFO L93 Difference]: Finished difference Result 8349 states and 11585 transitions. [2023-02-15 00:59:56,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-02-15 00:59:56,200 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 5.684210526315789) internal successors, (108), 20 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2023-02-15 00:59:56,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 00:59:56,234 INFO L225 Difference]: With dead ends: 8349 [2023-02-15 00:59:56,235 INFO L226 Difference]: Without dead ends: 8349 [2023-02-15 00:59:56,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 541 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=509, Invalid=2247, Unknown=0, NotChecked=0, Total=2756 [2023-02-15 00:59:56,264 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 2202 mSDsluCounter, 871 mSDsCounter, 0 mSdLazyCounter, 930 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2202 SdHoareTripleChecker+Valid, 962 SdHoareTripleChecker+Invalid, 939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 930 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-02-15 00:59:56,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2202 Valid, 962 Invalid, 939 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 930 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-02-15 00:59:56,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8349 states. [2023-02-15 00:59:56,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8349 to 1729. [2023-02-15 00:59:56,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1729 states, 1724 states have (on average 1.3491879350348028) internal successors, (2326), 1728 states have internal predecessors, (2326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:59:56,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1729 states to 1729 states and 2326 transitions. [2023-02-15 00:59:56,342 INFO L78 Accepts]: Start accepts. Automaton has 1729 states and 2326 transitions. Word has length 56 [2023-02-15 00:59:56,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 00:59:56,342 INFO L495 AbstractCegarLoop]: Abstraction has 1729 states and 2326 transitions. [2023-02-15 00:59:56,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 5.684210526315789) internal successors, (108), 20 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 00:59:56,342 INFO L276 IsEmpty]: Start isEmpty. Operand 1729 states and 2326 transitions. [2023-02-15 00:59:56,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-02-15 00:59:56,356 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 00:59:56,357 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 00:59:56,368 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 (42)] Forceful destruction successful, exit code 0 [2023-02-15 00:59:56,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 00:59:56,567 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-02-15 00:59:56,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 00:59:56,568 INFO L85 PathProgramCache]: Analyzing trace with hash -2040124660, now seen corresponding path program 5 times [2023-02-15 00:59:56,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 00:59:56,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [659877337] [2023-02-15 00:59:56,568 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-15 00:59:56,568 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 00:59:56,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 00:59:56,569 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 00:59:56,570 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 (43)] Waiting until timeout for monitored process [2023-02-15 00:59:56,884 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2023-02-15 00:59:56,884 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 00:59:56,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 22 conjunts are in the unsatisfiable core [2023-02-15 00:59:56,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 00:59:57,311 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 12 proven. 111 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 00:59:57,311 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 00:59:59,093 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 29 proven. 94 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 00:59:59,093 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 00:59:59,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [659877337] [2023-02-15 00:59:59,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [659877337] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 00:59:59,093 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 00:59:59,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20] total 39 [2023-02-15 00:59:59,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684814518] [2023-02-15 00:59:59,093 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 00:59:59,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-02-15 00:59:59,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 00:59:59,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-02-15 00:59:59,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=1256, Unknown=0, NotChecked=0, Total=1482 [2023-02-15 00:59:59,094 INFO L87 Difference]: Start difference. First operand 1729 states and 2326 transitions. Second operand has 39 states, 39 states have (on average 3.0) internal successors, (117), 39 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 01:00:08,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 01:00:08,448 INFO L93 Difference]: Finished difference Result 5138 states and 6440 transitions. [2023-02-15 01:00:08,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2023-02-15 01:00:08,449 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.0) internal successors, (117), 39 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2023-02-15 01:00:08,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 01:00:08,455 INFO L225 Difference]: With dead ends: 5138 [2023-02-15 01:00:08,455 INFO L226 Difference]: Without dead ends: 4713 [2023-02-15 01:00:08,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2110 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=1689, Invalid=7241, Unknown=0, NotChecked=0, Total=8930 [2023-02-15 01:00:08,458 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 2241 mSDsluCounter, 3430 mSDsCounter, 0 mSdLazyCounter, 1976 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2241 SdHoareTripleChecker+Valid, 3690 SdHoareTripleChecker+Invalid, 2012 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1976 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-02-15 01:00:08,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2241 Valid, 3690 Invalid, 2012 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1976 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-02-15 01:00:08,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4713 states. [2023-02-15 01:00:08,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4713 to 2469. [2023-02-15 01:00:08,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2469 states, 2464 states have (on average 1.37987012987013) internal successors, (3400), 2468 states have internal predecessors, (3400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 01:00:08,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2469 states to 2469 states and 3400 transitions. [2023-02-15 01:00:08,488 INFO L78 Accepts]: Start accepts. Automaton has 2469 states and 3400 transitions. Word has length 61 [2023-02-15 01:00:08,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 01:00:08,488 INFO L495 AbstractCegarLoop]: Abstraction has 2469 states and 3400 transitions. [2023-02-15 01:00:08,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.0) internal successors, (117), 39 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 01:00:08,489 INFO L276 IsEmpty]: Start isEmpty. Operand 2469 states and 3400 transitions. [2023-02-15 01:00:08,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-02-15 01:00:08,497 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 01:00:08,497 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 01:00:08,521 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 (43)] Forceful destruction successful, exit code 0 [2023-02-15 01:00:08,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 01:00:08,707 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-02-15 01:00:08,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 01:00:08,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1288171396, now seen corresponding path program 6 times [2023-02-15 01:00:08,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 01:00:08,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [24708111] [2023-02-15 01:00:08,708 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-15 01:00:08,708 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 01:00:08,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 01:00:08,710 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 01:00:08,711 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 (44)] Waiting until timeout for monitored process [2023-02-15 01:00:08,905 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2023-02-15 01:00:08,906 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 01:00:08,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 27 conjunts are in the unsatisfiable core [2023-02-15 01:00:08,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 01:00:08,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 01:00:08,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 01:00:08,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 01:00:08,938 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 18 [2023-02-15 01:00:08,945 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2023-02-15 01:00:08,945 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 23 treesize of output 19 [2023-02-15 01:00:09,511 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 1 proven. 76 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-02-15 01:00:09,511 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 01:00:11,307 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 01:00:11,308 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 01:00:11,382 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 1 proven. 76 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-02-15 01:00:11,382 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 01:00:11,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [24708111] [2023-02-15 01:00:11,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [24708111] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 01:00:11,382 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 01:00:11,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2023-02-15 01:00:11,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340213370] [2023-02-15 01:00:11,382 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 01:00:11,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-02-15 01:00:11,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 01:00:11,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-02-15 01:00:11,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2023-02-15 01:00:11,383 INFO L87 Difference]: Start difference. First operand 2469 states and 3400 transitions. Second operand has 20 states, 19 states have (on average 5.368421052631579) internal successors, (102), 20 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 01:00:15,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 01:00:15,842 INFO L93 Difference]: Finished difference Result 6768 states and 9530 transitions. [2023-02-15 01:00:15,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-02-15 01:00:15,843 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 5.368421052631579) internal successors, (102), 20 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2023-02-15 01:00:15,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 01:00:15,851 INFO L225 Difference]: With dead ends: 6768 [2023-02-15 01:00:15,851 INFO L226 Difference]: Without dead ends: 6768 [2023-02-15 01:00:15,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=442, Invalid=1118, Unknown=0, NotChecked=0, Total=1560 [2023-02-15 01:00:15,852 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 646 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 646 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-02-15 01:00:15,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [646 Valid, 396 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 378 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-02-15 01:00:15,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6768 states. [2023-02-15 01:00:15,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6768 to 6513. [2023-02-15 01:00:15,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6513 states, 6508 states have (on average 1.4222495390288876) internal successors, (9256), 6512 states have internal predecessors, (9256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 01:00:15,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6513 states to 6513 states and 9256 transitions. [2023-02-15 01:00:15,916 INFO L78 Accepts]: Start accepts. Automaton has 6513 states and 9256 transitions. Word has length 64 [2023-02-15 01:00:15,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 01:00:15,916 INFO L495 AbstractCegarLoop]: Abstraction has 6513 states and 9256 transitions. [2023-02-15 01:00:15,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 5.368421052631579) internal successors, (102), 20 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 01:00:15,917 INFO L276 IsEmpty]: Start isEmpty. Operand 6513 states and 9256 transitions. [2023-02-15 01:00:15,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-02-15 01:00:15,918 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 01:00:15,918 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 01:00:15,943 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 (44)] Forceful destruction successful, exit code 0 [2023-02-15 01:00:16,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 01:00:16,128 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-02-15 01:00:16,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 01:00:16,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1564676590, now seen corresponding path program 6 times [2023-02-15 01:00:16,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 01:00:16,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2078851879] [2023-02-15 01:00:16,129 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-15 01:00:16,129 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 01:00:16,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 01:00:16,131 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 01:00:16,134 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 (45)] Waiting until timeout for monitored process [2023-02-15 01:00:16,507 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2023-02-15 01:00:16,508 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 01:00:16,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 26 conjunts are in the unsatisfiable core [2023-02-15 01:00:16,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 01:00:16,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 01:00:16,553 INFO L321 Elim1Store]: treesize reduction 26, result has 31.6 percent of original size [2023-02-15 01:00:16,553 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 25 [2023-02-15 01:00:16,561 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 26 treesize of output 24 [2023-02-15 01:00:17,124 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2023-02-15 01:00:17,124 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 01:00:19,924 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 01:00:20,009 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2023-02-15 01:00:20,009 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 01:00:20,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2078851879] [2023-02-15 01:00:20,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2078851879] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 01:00:20,009 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 01:00:20,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2023-02-15 01:00:20,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359233337] [2023-02-15 01:00:20,009 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 01:00:20,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-02-15 01:00:20,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 01:00:20,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-02-15 01:00:20,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=509, Unknown=0, NotChecked=0, Total=650 [2023-02-15 01:00:20,010 INFO L87 Difference]: Start difference. First operand 6513 states and 9256 transitions. Second operand has 26 states, 25 states have (on average 3.48) internal successors, (87), 26 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 01:00:37,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 01:00:37,359 INFO L93 Difference]: Finished difference Result 20033 states and 24937 transitions. [2023-02-15 01:00:37,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-02-15 01:00:37,361 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 3.48) internal successors, (87), 26 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2023-02-15 01:00:37,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 01:00:37,390 INFO L225 Difference]: With dead ends: 20033 [2023-02-15 01:00:37,391 INFO L226 Difference]: Without dead ends: 20033 [2023-02-15 01:00:37,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 696 ImplicationChecksByTransitivity, 16.0s TimeCoverageRelationStatistics Valid=907, Invalid=2285, Unknown=0, NotChecked=0, Total=3192 [2023-02-15 01:00:37,392 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 1504 mSDsluCounter, 609 mSDsCounter, 0 mSdLazyCounter, 1116 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1504 SdHoareTripleChecker+Valid, 689 SdHoareTripleChecker+Invalid, 1143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-02-15 01:00:37,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1504 Valid, 689 Invalid, 1143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1116 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-02-15 01:00:37,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20033 states. [2023-02-15 01:00:37,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20033 to 7985. [2023-02-15 01:00:37,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7985 states, 7980 states have (on average 1.4536340852130325) internal successors, (11600), 7984 states have internal predecessors, (11600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 01:00:37,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7985 states to 7985 states and 11600 transitions. [2023-02-15 01:00:37,586 INFO L78 Accepts]: Start accepts. Automaton has 7985 states and 11600 transitions. Word has length 69 [2023-02-15 01:00:37,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 01:00:37,587 INFO L495 AbstractCegarLoop]: Abstraction has 7985 states and 11600 transitions. [2023-02-15 01:00:37,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 3.48) internal successors, (87), 26 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 01:00:37,587 INFO L276 IsEmpty]: Start isEmpty. Operand 7985 states and 11600 transitions. [2023-02-15 01:00:37,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-02-15 01:00:37,589 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 01:00:37,589 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 01:00:37,607 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 (45)] Forceful destruction successful, exit code 0 [2023-02-15 01:00:37,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 01:00:37,800 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-02-15 01:00:37,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 01:00:37,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1457387987, now seen corresponding path program 3 times [2023-02-15 01:00:37,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 01:00:37,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [475209214] [2023-02-15 01:00:37,802 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-15 01:00:37,802 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 01:00:37,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 01:00:37,803 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 01:00:37,805 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 (46)] Waiting until timeout for monitored process [2023-02-15 01:00:38,365 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-02-15 01:00:38,365 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 01:00:38,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 26 conjunts are in the unsatisfiable core [2023-02-15 01:00:38,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 01:00:38,426 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2023-02-15 01:00:38,427 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 2 case distinctions, treesize of input 14 treesize of output 29 [2023-02-15 01:00:39,310 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-02-15 01:00:39,310 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 01:00:42,698 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-02-15 01:00:42,698 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 01:00:42,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [475209214] [2023-02-15 01:00:42,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [475209214] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 01:00:42,699 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 01:00:42,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 27 [2023-02-15 01:00:42,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663116666] [2023-02-15 01:00:42,699 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 01:00:42,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-02-15 01:00:42,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 01:00:42,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-02-15 01:00:42,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=618, Unknown=0, NotChecked=0, Total=756 [2023-02-15 01:00:42,700 INFO L87 Difference]: Start difference. First operand 7985 states and 11600 transitions. Second operand has 28 states, 27 states have (on average 5.185185185185185) internal successors, (140), 28 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 01:00:52,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 01:00:52,318 INFO L93 Difference]: Finished difference Result 21417 states and 31162 transitions. [2023-02-15 01:00:52,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-02-15 01:00:52,319 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 5.185185185185185) internal successors, (140), 28 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2023-02-15 01:00:52,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 01:00:52,343 INFO L225 Difference]: With dead ends: 21417 [2023-02-15 01:00:52,344 INFO L226 Difference]: Without dead ends: 21417 [2023-02-15 01:00:52,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 113 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 554 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=638, Invalid=2332, Unknown=0, NotChecked=0, Total=2970 [2023-02-15 01:00:52,345 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 1473 mSDsluCounter, 887 mSDsCounter, 0 mSdLazyCounter, 888 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1473 SdHoareTripleChecker+Valid, 975 SdHoareTripleChecker+Invalid, 906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-02-15 01:00:52,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1473 Valid, 975 Invalid, 906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 888 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-02-15 01:00:52,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21417 states. [2023-02-15 01:00:52,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21417 to 17856. [2023-02-15 01:00:52,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17856 states, 17851 states have (on average 1.4603103467592853) internal successors, (26068), 17855 states have internal predecessors, (26068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 01:00:52,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17856 states to 17856 states and 26068 transitions. [2023-02-15 01:00:52,632 INFO L78 Accepts]: Start accepts. Automaton has 17856 states and 26068 transitions. Word has length 71 [2023-02-15 01:00:52,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 01:00:52,632 INFO L495 AbstractCegarLoop]: Abstraction has 17856 states and 26068 transitions. [2023-02-15 01:00:52,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 5.185185185185185) internal successors, (140), 28 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 01:00:52,633 INFO L276 IsEmpty]: Start isEmpty. Operand 17856 states and 26068 transitions. [2023-02-15 01:00:52,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-02-15 01:00:52,638 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 01:00:52,638 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 01:00:52,667 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 (46)] Forceful destruction successful, exit code 0 [2023-02-15 01:00:52,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 01:00:52,849 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-02-15 01:00:52,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 01:00:52,850 INFO L85 PathProgramCache]: Analyzing trace with hash 171189742, now seen corresponding path program 4 times [2023-02-15 01:00:52,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 01:00:52,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1830727198] [2023-02-15 01:00:52,850 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-15 01:00:52,850 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 01:00:52,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 01:00:52,851 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 01:00:52,857 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 (47)] Waiting until timeout for monitored process [2023-02-15 01:00:53,150 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-15 01:00:53,151 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 01:00:53,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 27 conjunts are in the unsatisfiable core [2023-02-15 01:00:53,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 01:00:53,219 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2023-02-15 01:00:53,220 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 2 case distinctions, treesize of input 14 treesize of output 29 [2023-02-15 01:00:54,210 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 122 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-02-15 01:00:54,210 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 01:00:57,587 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 122 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-02-15 01:00:57,587 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 01:00:57,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1830727198] [2023-02-15 01:00:57,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1830727198] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 01:00:57,587 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 01:00:57,587 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 27 [2023-02-15 01:00:57,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511699229] [2023-02-15 01:00:57,587 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 01:00:57,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-02-15 01:00:57,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 01:00:57,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-02-15 01:00:57,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=614, Unknown=0, NotChecked=0, Total=756 [2023-02-15 01:00:57,588 INFO L87 Difference]: Start difference. First operand 17856 states and 26068 transitions. Second operand has 28 states, 27 states have (on average 5.111111111111111) internal successors, (138), 28 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 01:01:06,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 01:01:06,844 INFO L93 Difference]: Finished difference Result 40950 states and 59719 transitions. [2023-02-15 01:01:06,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-02-15 01:01:06,852 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 5.111111111111111) internal successors, (138), 28 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2023-02-15 01:01:06,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 01:01:06,901 INFO L225 Difference]: With dead ends: 40950 [2023-02-15 01:01:06,902 INFO L226 Difference]: Without dead ends: 40950 [2023-02-15 01:01:06,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 570 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=745, Invalid=2561, Unknown=0, NotChecked=0, Total=3306 [2023-02-15 01:01:06,903 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 466 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 724 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 466 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-02-15 01:01:06,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [466 Valid, 562 Invalid, 759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 724 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-02-15 01:01:06,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40950 states. [2023-02-15 01:01:07,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40950 to 23383. [2023-02-15 01:01:07,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23383 states, 23378 states have (on average 1.4678330053896826) internal successors, (34315), 23382 states have internal predecessors, (34315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 01:01:07,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23383 states to 23383 states and 34315 transitions. [2023-02-15 01:01:07,524 INFO L78 Accepts]: Start accepts. Automaton has 23383 states and 34315 transitions. Word has length 82 [2023-02-15 01:01:07,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 01:01:07,524 INFO L495 AbstractCegarLoop]: Abstraction has 23383 states and 34315 transitions. [2023-02-15 01:01:07,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 5.111111111111111) internal successors, (138), 28 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 01:01:07,524 INFO L276 IsEmpty]: Start isEmpty. Operand 23383 states and 34315 transitions. [2023-02-15 01:01:07,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-02-15 01:01:07,545 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 01:01:07,545 INFO L195 NwaCegarLoop]: trace histogram [23, 22, 22, 22, 1, 1, 1, 1, 1, 1] [2023-02-15 01:01:07,565 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 (47)] Forceful destruction successful, exit code 0 [2023-02-15 01:01:07,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 01:01:07,756 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-02-15 01:01:07,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 01:01:07,757 INFO L85 PathProgramCache]: Analyzing trace with hash 2147231533, now seen corresponding path program 4 times [2023-02-15 01:01:07,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 01:01:07,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1941304687] [2023-02-15 01:01:07,757 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-15 01:01:07,757 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 [2023-02-15 01:01:07,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 01:01:07,761 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 01:01:07,763 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 (48)] Waiting until timeout for monitored process [2023-02-15 01:01:08,076 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-15 01:01:08,076 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 01:01:08,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 39 conjunts are in the unsatisfiable core [2023-02-15 01:01:08,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 01:01:08,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 01:01:08,162 INFO L321 Elim1Store]: treesize reduction 28, result has 37.8 percent of original size [2023-02-15 01:01:08,162 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 24 [2023-02-15 01:01:08,170 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 10 treesize of output 8 [2023-02-15 01:01:09,771 INFO L134 CoverageAnalysis]: Checked inductivity of 968 backedges. 0 proven. 968 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 01:01:09,772 INFO L328 TraceCheckSpWp]: Computing backward predicates...