./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety-ext/tree_dsw.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9a8b2e8d 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_1.3.100.v20150511-1540.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/memsafety-ext/tree_dsw.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 0046771f7e99737dcb98805b185666cbe0afcb5f ............................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis 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_1.3.100.v20150511-1540.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/memsafety-ext/tree_dsw.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 0046771f7e99737dcb98805b185666cbe0afcb5f ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 05:56:12,170 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 05:56:12,173 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 05:56:12,212 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 05:56:12,212 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 05:56:12,215 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 05:56:12,217 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 05:56:12,218 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 05:56:12,220 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 05:56:12,221 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 05:56:12,222 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 05:56:12,223 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 05:56:12,224 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 05:56:12,225 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 05:56:12,226 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 05:56:12,227 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 05:56:12,228 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 05:56:12,229 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 05:56:12,231 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 05:56:12,232 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 05:56:12,234 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 05:56:12,235 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 05:56:12,236 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 05:56:12,237 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 05:56:12,239 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 05:56:12,240 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 05:56:12,240 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 05:56:12,241 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 05:56:12,241 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 05:56:12,242 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 05:56:12,243 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 05:56:12,243 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 05:56:12,244 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 05:56:12,245 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 05:56:12,246 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 05:56:12,246 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 05:56:12,247 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 05:56:12,247 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 05:56:12,247 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 05:56:12,248 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 05:56:12,249 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 05:56:12,250 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-10-20 05:56:12,300 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 05:56:12,301 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 05:56:12,303 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 05:56:12,303 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 05:56:12,303 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 05:56:12,304 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 05:56:12,304 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 05:56:12,304 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 05:56:12,304 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 05:56:12,305 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 05:56:12,306 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 05:56:12,306 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-20 05:56:12,306 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-20 05:56:12,307 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-20 05:56:12,307 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 05:56:12,307 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-20 05:56:12,308 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 05:56:12,308 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 05:56:12,309 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 05:56:12,309 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 05:56:12,309 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 05:56:12,310 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 05:56:12,310 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 05:56:12,310 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 05:56:12,310 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 05:56:12,311 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 05:56:12,311 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 05:56:12,311 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 05:56:12,311 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> 0046771f7e99737dcb98805b185666cbe0afcb5f [2020-10-20 05:56:12,522 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 05:56:12,535 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 05:56:12,539 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 05:56:12,540 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 05:56:12,541 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 05:56:12,542 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety-ext/tree_dsw.i [2020-10-20 05:56:12,615 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/082dc964b/670749052a154c00b1f1cd98ff936104/FLAGdca89ce25 [2020-10-20 05:56:13,100 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 05:56:13,101 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety-ext/tree_dsw.i [2020-10-20 05:56:13,119 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/082dc964b/670749052a154c00b1f1cd98ff936104/FLAGdca89ce25 [2020-10-20 05:56:13,411 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/082dc964b/670749052a154c00b1f1cd98ff936104 [2020-10-20 05:56:13,416 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 05:56:13,422 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-20 05:56:13,424 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 05:56:13,424 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 05:56:13,428 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 05:56:13,430 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:56:13" (1/1) ... [2020-10-20 05:56:13,433 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f9d2342 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:56:13, skipping insertion in model container [2020-10-20 05:56:13,434 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:56:13" (1/1) ... [2020-10-20 05:56:13,443 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 05:56:13,515 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 05:56:13,957 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 05:56:13,975 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2020-10-20 05:56:13,976 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6ba52931 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:56:13, skipping insertion in model container [2020-10-20 05:56:13,976 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 05:56:13,977 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2020-10-20 05:56:13,981 INFO L168 Benchmark]: Toolchain (without parser) took 562.14 ms. Allocated memory was 34.1 MB in the beginning and 45.6 MB in the end (delta: 11.5 MB). Free memory was 6.6 MB in the beginning and 26.5 MB in the end (delta: -19.9 MB). Peak memory consumption was 7.0 MB. Max. memory is 14.3 GB. [2020-10-20 05:56:13,982 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 33.6 MB. Free memory is still 12.3 MB. There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 05:56:13,984 INFO L168 Benchmark]: CACSL2BoogieTranslator took 552.63 ms. Allocated memory was 34.1 MB in the beginning and 45.6 MB in the end (delta: 11.5 MB). Free memory was 5.7 MB in the beginning and 26.5 MB in the end (delta: -20.8 MB). Peak memory consumption was 6.1 MB. Max. memory is 14.3 GB. [2020-10-20 05:56:13,988 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 33.6 MB. Free memory is still 12.3 MB. There was no memory consumed. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 552.63 ms. Allocated memory was 34.1 MB in the beginning and 45.6 MB in the end (delta: 11.5 MB). Free memory was 5.7 MB in the beginning and 26.5 MB in the end (delta: -20.8 MB). Peak memory consumption was 6.1 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 571]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 05:56:16,034 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 05:56:16,036 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 05:56:16,060 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 05:56:16,060 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 05:56:16,061 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 05:56:16,076 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 05:56:16,080 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 05:56:16,082 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 05:56:16,083 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 05:56:16,084 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 05:56:16,086 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 05:56:16,086 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 05:56:16,087 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 05:56:16,088 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 05:56:16,089 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 05:56:16,090 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 05:56:16,091 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 05:56:16,092 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 05:56:16,094 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 05:56:16,096 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 05:56:16,097 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 05:56:16,098 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 05:56:16,099 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 05:56:16,101 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 05:56:16,101 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 05:56:16,102 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 05:56:16,103 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 05:56:16,103 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 05:56:16,104 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 05:56:16,104 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 05:56:16,105 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 05:56:16,106 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 05:56:16,106 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 05:56:16,107 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 05:56:16,108 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 05:56:16,108 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 05:56:16,109 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 05:56:16,109 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 05:56:16,110 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 05:56:16,111 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 05:56:16,112 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2020-10-20 05:56:16,134 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 05:56:16,134 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 05:56:16,135 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 05:56:16,135 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 05:56:16,136 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 05:56:16,136 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 05:56:16,136 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 05:56:16,137 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 05:56:16,137 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 05:56:16,137 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 05:56:16,137 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 05:56:16,138 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-20 05:56:16,138 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-20 05:56:16,138 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-20 05:56:16,138 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 05:56:16,139 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-20 05:56:16,139 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-20 05:56:16,139 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-20 05:56:16,139 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 05:56:16,140 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 05:56:16,140 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 05:56:16,140 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 05:56:16,140 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 05:56:16,141 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 05:56:16,141 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 05:56:16,141 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 05:56:16,141 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 05:56:16,142 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-20 05:56:16,142 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-20 05:56:16,142 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 05:56:16,142 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-20 05:56:16,143 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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 -> 0046771f7e99737dcb98805b185666cbe0afcb5f [2020-10-20 05:56:16,350 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 05:56:16,361 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 05:56:16,365 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 05:56:16,367 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 05:56:16,368 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 05:56:16,368 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety-ext/tree_dsw.i [2020-10-20 05:56:16,427 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0796156f/269e8d0c1b104968aea9c7866657fd4f/FLAG5f9139009 [2020-10-20 05:56:16,944 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 05:56:16,945 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety-ext/tree_dsw.i [2020-10-20 05:56:16,971 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0796156f/269e8d0c1b104968aea9c7866657fd4f/FLAG5f9139009 [2020-10-20 05:56:17,283 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0796156f/269e8d0c1b104968aea9c7866657fd4f [2020-10-20 05:56:17,287 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 05:56:17,293 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-20 05:56:17,294 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 05:56:17,295 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 05:56:17,299 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 05:56:17,301 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:56:17" (1/1) ... [2020-10-20 05:56:17,305 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2209c2fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:56:17, skipping insertion in model container [2020-10-20 05:56:17,306 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:56:17" (1/1) ... [2020-10-20 05:56:17,316 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 05:56:17,375 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 05:56:17,825 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 05:56:17,853 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2020-10-20 05:56:17,862 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 05:56:17,942 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 05:56:17,948 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 05:56:18,024 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 05:56:18,094 INFO L208 MainTranslator]: Completed translation [2020-10-20 05:56:18,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:56:18 WrapperNode [2020-10-20 05:56:18,096 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 05:56:18,097 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 05:56:18,097 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 05:56:18,097 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 05:56:18,110 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:56:18" (1/1) ... [2020-10-20 05:56:18,110 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:56:18" (1/1) ... [2020-10-20 05:56:18,134 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:56:18" (1/1) ... [2020-10-20 05:56:18,135 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:56:18" (1/1) ... [2020-10-20 05:56:18,160 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:56:18" (1/1) ... [2020-10-20 05:56:18,166 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:56:18" (1/1) ... [2020-10-20 05:56:18,171 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:56:18" (1/1) ... [2020-10-20 05:56:18,179 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 05:56:18,180 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 05:56:18,180 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 05:56:18,180 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 05:56:18,181 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:56:18" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 05:56:18,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-20 05:56:18,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 05:56:18,250 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2020-10-20 05:56:18,250 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-20 05:56:18,250 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-20 05:56:18,250 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-20 05:56:18,251 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-10-20 05:56:18,251 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-10-20 05:56:18,251 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-10-20 05:56:18,251 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-20 05:56:18,251 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-20 05:56:18,251 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-20 05:56:18,252 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-20 05:56:18,252 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-20 05:56:18,252 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-20 05:56:18,252 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-20 05:56:18,252 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 05:56:18,253 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-20 05:56:18,253 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-20 05:56:18,253 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-20 05:56:18,253 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-20 05:56:18,254 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-20 05:56:18,254 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-20 05:56:18,254 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-20 05:56:18,254 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-20 05:56:18,255 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-20 05:56:18,255 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-20 05:56:18,255 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-20 05:56:18,255 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-20 05:56:18,256 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-20 05:56:18,256 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-20 05:56:18,256 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-20 05:56:18,256 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-20 05:56:18,256 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-20 05:56:18,257 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-20 05:56:18,257 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-10-20 05:56:18,257 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-10-20 05:56:18,258 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-10-20 05:56:18,258 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-20 05:56:18,258 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-20 05:56:18,258 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-20 05:56:18,258 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-20 05:56:18,259 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-20 05:56:18,259 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-20 05:56:18,259 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-20 05:56:18,259 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-20 05:56:18,259 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-20 05:56:18,260 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-20 05:56:18,260 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-20 05:56:18,260 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-20 05:56:18,260 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-20 05:56:18,261 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-20 05:56:18,261 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-20 05:56:18,261 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-20 05:56:18,261 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-20 05:56:18,261 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-20 05:56:18,262 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-20 05:56:18,262 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-20 05:56:18,262 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-20 05:56:18,262 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-20 05:56:18,262 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-20 05:56:18,263 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-20 05:56:18,263 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-20 05:56:18,263 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-20 05:56:18,263 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-20 05:56:18,264 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-20 05:56:18,264 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-20 05:56:18,264 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-20 05:56:18,264 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-20 05:56:18,264 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-20 05:56:18,265 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-20 05:56:18,265 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-20 05:56:18,265 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-20 05:56:18,265 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-20 05:56:18,265 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-20 05:56:18,266 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-20 05:56:18,266 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-20 05:56:18,266 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-20 05:56:18,266 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-20 05:56:18,266 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-20 05:56:18,267 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-20 05:56:18,267 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-20 05:56:18,267 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-20 05:56:18,267 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-20 05:56:18,267 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-20 05:56:18,268 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-20 05:56:18,268 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-20 05:56:18,268 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-20 05:56:18,268 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-20 05:56:18,268 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-20 05:56:18,269 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-20 05:56:18,269 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-20 05:56:18,269 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-20 05:56:18,269 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-20 05:56:18,269 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-20 05:56:18,270 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-20 05:56:18,270 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-20 05:56:18,270 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-20 05:56:18,270 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-20 05:56:18,270 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-20 05:56:18,271 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-20 05:56:18,271 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-20 05:56:18,271 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-20 05:56:18,271 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-20 05:56:18,271 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-20 05:56:18,271 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-20 05:56:18,272 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-20 05:56:18,272 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-20 05:56:18,272 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-20 05:56:18,272 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-20 05:56:18,272 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-20 05:56:18,273 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-20 05:56:18,273 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-20 05:56:18,273 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-20 05:56:18,273 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-20 05:56:18,273 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-20 05:56:18,273 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-20 05:56:18,274 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-20 05:56:18,274 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-20 05:56:18,274 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-20 05:56:18,274 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-20 05:56:18,275 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-20 05:56:18,275 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-20 05:56:18,275 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-20 05:56:18,275 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-20 05:56:18,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-20 05:56:18,276 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-20 05:56:18,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 05:56:18,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-20 05:56:18,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-20 05:56:18,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 05:56:18,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2020-10-20 05:56:18,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2020-10-20 05:56:18,277 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2020-10-20 05:56:19,321 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 05:56:19,322 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-20 05:56:19,324 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:56:19 BoogieIcfgContainer [2020-10-20 05:56:19,325 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 05:56:19,326 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 05:56:19,327 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 05:56:19,330 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 05:56:19,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 05:56:17" (1/3) ... [2020-10-20 05:56:19,332 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43199ce8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 05:56:19, skipping insertion in model container [2020-10-20 05:56:19,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:56:18" (2/3) ... [2020-10-20 05:56:19,333 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43199ce8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 05:56:19, skipping insertion in model container [2020-10-20 05:56:19,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:56:19" (3/3) ... [2020-10-20 05:56:19,335 INFO L111 eAbstractionObserver]: Analyzing ICFG tree_dsw.i [2020-10-20 05:56:19,348 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 05:56:19,356 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 78 error locations. [2020-10-20 05:56:19,371 INFO L253 AbstractCegarLoop]: Starting to check reachability of 78 error locations. [2020-10-20 05:56:19,411 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 05:56:19,411 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-20 05:56:19,412 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 05:56:19,412 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 05:56:19,412 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 05:56:19,412 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 05:56:19,413 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 05:56:19,413 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 05:56:19,435 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states. [2020-10-20 05:56:19,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-20 05:56:19,445 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:56:19,446 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:56:19,447 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr72REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr70REQUIRES_VIOLATION, mainErr74ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr68REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr66REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr76ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr73ASSERT_VIOLATIONMEMORY_FREE, mainErr63REQUIRES_VIOLATION, mainErr61REQUIRES_VIOLATION, mainErr55ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr71REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr69REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr54ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67REQUIRES_VIOLATION, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr62REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr58REQUIRES_VIOLATION, mainErr75ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-10-20 05:56:19,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:56:19,453 INFO L82 PathProgramCache]: Analyzing trace with hash -2056213541, now seen corresponding path program 1 times [2020-10-20 05:56:19,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 05:56:19,464 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [409335490] [2020-10-20 05:56:19,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-10-20 05:56:19,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:56:19,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-20 05:56:19,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:56:19,751 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-20 05:56:19,752 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:56:19,761 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:56:19,761 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:56:19,762 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-20 05:56:19,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:56:19,775 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 05:56:19,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:56:19,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [409335490] [2020-10-20 05:56:19,800 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:56:19,800 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-20 05:56:19,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726184424] [2020-10-20 05:56:19,807 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 05:56:19,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 05:56:19,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 05:56:19,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 05:56:19,827 INFO L87 Difference]: Start difference. First operand 158 states. Second operand 3 states. [2020-10-20 05:56:20,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:56:20,252 INFO L93 Difference]: Finished difference Result 172 states and 184 transitions. [2020-10-20 05:56:20,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 05:56:20,254 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-10-20 05:56:20,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:56:20,280 INFO L225 Difference]: With dead ends: 172 [2020-10-20 05:56:20,284 INFO L226 Difference]: Without dead ends: 169 [2020-10-20 05:56:20,286 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 05:56:20,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-10-20 05:56:20,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 153. [2020-10-20 05:56:20,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-20 05:56:20,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 164 transitions. [2020-10-20 05:56:20,389 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 164 transitions. Word has length 7 [2020-10-20 05:56:20,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:56:20,391 INFO L481 AbstractCegarLoop]: Abstraction has 153 states and 164 transitions. [2020-10-20 05:56:20,391 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 05:56:20,391 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 164 transitions. [2020-10-20 05:56:20,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-20 05:56:20,394 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:56:20,394 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:56:20,616 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-20 05:56:20,617 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr72REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr70REQUIRES_VIOLATION, mainErr74ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr68REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr66REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr76ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr73ASSERT_VIOLATIONMEMORY_FREE, mainErr63REQUIRES_VIOLATION, mainErr61REQUIRES_VIOLATION, mainErr55ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr71REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr69REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr54ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67REQUIRES_VIOLATION, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr62REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr58REQUIRES_VIOLATION, mainErr75ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-10-20 05:56:20,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:56:20,618 INFO L82 PathProgramCache]: Analyzing trace with hash -2056213540, now seen corresponding path program 1 times [2020-10-20 05:56:20,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 05:56:20,621 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1889855468] [2020-10-20 05:56:20,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-10-20 05:56:20,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:56:20,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-20 05:56:20,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:56:20,750 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-20 05:56:20,750 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:56:20,756 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:56:20,756 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:56:20,756 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-10-20 05:56:20,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:56:20,764 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 05:56:20,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:56:20,817 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1889855468] [2020-10-20 05:56:20,817 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:56:20,817 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2020-10-20 05:56:20,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815645910] [2020-10-20 05:56:20,821 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 05:56:20,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 05:56:20,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 05:56:20,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-20 05:56:20,822 INFO L87 Difference]: Start difference. First operand 153 states and 164 transitions. Second operand 4 states. [2020-10-20 05:56:21,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:56:21,223 INFO L93 Difference]: Finished difference Result 151 states and 162 transitions. [2020-10-20 05:56:21,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 05:56:21,228 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-10-20 05:56:21,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:56:21,229 INFO L225 Difference]: With dead ends: 151 [2020-10-20 05:56:21,230 INFO L226 Difference]: Without dead ends: 151 [2020-10-20 05:56:21,231 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-20 05:56:21,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-10-20 05:56:21,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2020-10-20 05:56:21,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-10-20 05:56:21,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 162 transitions. [2020-10-20 05:56:21,248 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 162 transitions. Word has length 7 [2020-10-20 05:56:21,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:56:21,250 INFO L481 AbstractCegarLoop]: Abstraction has 151 states and 162 transitions. [2020-10-20 05:56:21,250 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 05:56:21,251 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 162 transitions. [2020-10-20 05:56:21,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 05:56:21,251 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:56:21,251 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:56:21,463 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-20 05:56:21,465 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr72REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr70REQUIRES_VIOLATION, mainErr74ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr68REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr66REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr76ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr73ASSERT_VIOLATIONMEMORY_FREE, mainErr63REQUIRES_VIOLATION, mainErr61REQUIRES_VIOLATION, mainErr55ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr71REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr69REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr54ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67REQUIRES_VIOLATION, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr62REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr58REQUIRES_VIOLATION, mainErr75ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-10-20 05:56:21,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:56:21,466 INFO L82 PathProgramCache]: Analyzing trace with hash -1834011113, now seen corresponding path program 1 times [2020-10-20 05:56:21,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 05:56:21,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [906097828] [2020-10-20 05:56:21,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-10-20 05:56:21,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:56:21,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 05:56:21,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:56:21,606 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-20 05:56:21,607 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:56:21,609 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:56:21,609 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:56:21,609 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-20 05:56:21,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:56:21,627 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 05:56:21,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:56:21,649 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [906097828] [2020-10-20 05:56:21,650 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:56:21,650 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-10-20 05:56:21,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047185451] [2020-10-20 05:56:21,650 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 05:56:21,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 05:56:21,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 05:56:21,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 05:56:21,651 INFO L87 Difference]: Start difference. First operand 151 states and 162 transitions. Second operand 4 states. [2020-10-20 05:56:22,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:56:22,193 INFO L93 Difference]: Finished difference Result 161 states and 176 transitions. [2020-10-20 05:56:22,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 05:56:22,194 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-20 05:56:22,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:56:22,196 INFO L225 Difference]: With dead ends: 161 [2020-10-20 05:56:22,196 INFO L226 Difference]: Without dead ends: 161 [2020-10-20 05:56:22,197 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-20 05:56:22,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-10-20 05:56:22,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 136. [2020-10-20 05:56:22,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-20 05:56:22,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 150 transitions. [2020-10-20 05:56:22,207 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 150 transitions. Word has length 10 [2020-10-20 05:56:22,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:56:22,207 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 150 transitions. [2020-10-20 05:56:22,207 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 05:56:22,208 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 150 transitions. [2020-10-20 05:56:22,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 05:56:22,208 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:56:22,208 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:56:22,413 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-20 05:56:22,414 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr72REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr70REQUIRES_VIOLATION, mainErr74ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr68REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr66REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr76ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr73ASSERT_VIOLATIONMEMORY_FREE, mainErr63REQUIRES_VIOLATION, mainErr61REQUIRES_VIOLATION, mainErr55ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr71REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr69REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr54ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67REQUIRES_VIOLATION, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr62REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr58REQUIRES_VIOLATION, mainErr75ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-10-20 05:56:22,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:56:22,415 INFO L82 PathProgramCache]: Analyzing trace with hash -1834011112, now seen corresponding path program 1 times [2020-10-20 05:56:22,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 05:56:22,416 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [557241963] [2020-10-20 05:56:22,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-10-20 05:56:22,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:56:22,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-20 05:56:22,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:56:22,543 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-20 05:56:22,544 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:56:22,550 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:56:22,550 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:56:22,551 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-10-20 05:56:22,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:56:22,574 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 05:56:22,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:56:22,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [557241963] [2020-10-20 05:56:22,721 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:56:22,721 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-10-20 05:56:22,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661207644] [2020-10-20 05:56:22,722 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 05:56:22,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 05:56:22,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 05:56:22,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-20 05:56:22,723 INFO L87 Difference]: Start difference. First operand 136 states and 150 transitions. Second operand 6 states. [2020-10-20 05:56:23,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:56:23,656 INFO L93 Difference]: Finished difference Result 199 states and 219 transitions. [2020-10-20 05:56:23,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 05:56:23,658 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-10-20 05:56:23,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:56:23,663 INFO L225 Difference]: With dead ends: 199 [2020-10-20 05:56:23,664 INFO L226 Difference]: Without dead ends: 199 [2020-10-20 05:56:23,664 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-20 05:56:23,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-10-20 05:56:23,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 159. [2020-10-20 05:56:23,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-10-20 05:56:23,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 182 transitions. [2020-10-20 05:56:23,686 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 182 transitions. Word has length 10 [2020-10-20 05:56:23,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:56:23,686 INFO L481 AbstractCegarLoop]: Abstraction has 159 states and 182 transitions. [2020-10-20 05:56:23,687 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 05:56:23,687 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 182 transitions. [2020-10-20 05:56:23,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-20 05:56:23,688 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:56:23,688 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:56:23,895 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-10-20 05:56:23,896 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr72REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr70REQUIRES_VIOLATION, mainErr74ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr68REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr66REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr76ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr73ASSERT_VIOLATIONMEMORY_FREE, mainErr63REQUIRES_VIOLATION, mainErr61REQUIRES_VIOLATION, mainErr55ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr71REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr69REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr54ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67REQUIRES_VIOLATION, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr62REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr58REQUIRES_VIOLATION, mainErr75ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-10-20 05:56:23,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:56:23,897 INFO L82 PathProgramCache]: Analyzing trace with hash -745103988, now seen corresponding path program 1 times [2020-10-20 05:56:23,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 05:56:23,899 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1726713612] [2020-10-20 05:56:23,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-10-20 05:56:24,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:56:24,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-20 05:56:24,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:56:24,014 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-20 05:56:24,015 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:56:24,016 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:56:24,016 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:56:24,016 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-20 05:56:24,051 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:56:24,051 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 17 [2020-10-20 05:56:24,053 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:56:24,056 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:56:24,056 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:56:24,056 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:4 [2020-10-20 05:56:24,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:56:24,063 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 05:56:24,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:56:24,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1726713612] [2020-10-20 05:56:24,076 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:56:24,077 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2020-10-20 05:56:24,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385806186] [2020-10-20 05:56:24,077 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 05:56:24,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 05:56:24,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 05:56:24,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 05:56:24,079 INFO L87 Difference]: Start difference. First operand 159 states and 182 transitions. Second operand 4 states. [2020-10-20 05:56:24,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:56:24,423 INFO L93 Difference]: Finished difference Result 176 states and 199 transitions. [2020-10-20 05:56:24,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 05:56:24,423 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-20 05:56:24,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:56:24,425 INFO L225 Difference]: With dead ends: 176 [2020-10-20 05:56:24,425 INFO L226 Difference]: Without dead ends: 176 [2020-10-20 05:56:24,426 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-20 05:56:24,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-10-20 05:56:24,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 159. [2020-10-20 05:56:24,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-10-20 05:56:24,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 181 transitions. [2020-10-20 05:56:24,434 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 181 transitions. Word has length 13 [2020-10-20 05:56:24,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:56:24,434 INFO L481 AbstractCegarLoop]: Abstraction has 159 states and 181 transitions. [2020-10-20 05:56:24,434 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 05:56:24,435 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 181 transitions. [2020-10-20 05:56:24,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-20 05:56:24,435 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:56:24,435 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:56:24,645 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-10-20 05:56:24,646 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr72REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr70REQUIRES_VIOLATION, mainErr74ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr68REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr66REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr76ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr73ASSERT_VIOLATIONMEMORY_FREE, mainErr63REQUIRES_VIOLATION, mainErr61REQUIRES_VIOLATION, mainErr55ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr71REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr69REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr54ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67REQUIRES_VIOLATION, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr62REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr58REQUIRES_VIOLATION, mainErr75ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-10-20 05:56:24,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:56:24,647 INFO L82 PathProgramCache]: Analyzing trace with hash -1802568457, now seen corresponding path program 1 times [2020-10-20 05:56:24,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 05:56:24,648 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [680732932] [2020-10-20 05:56:24,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-10-20 05:56:24,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:56:24,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 05:56:24,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:56:24,781 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:56:24,781 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 05:56:24,792 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:56:24,792 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [680732932] [2020-10-20 05:56:24,792 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:56:24,793 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-10-20 05:56:24,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318790905] [2020-10-20 05:56:24,793 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 05:56:24,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 05:56:24,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 05:56:24,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 05:56:24,794 INFO L87 Difference]: Start difference. First operand 159 states and 181 transitions. Second operand 3 states. [2020-10-20 05:56:24,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:56:24,803 INFO L93 Difference]: Finished difference Result 161 states and 183 transitions. [2020-10-20 05:56:24,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 05:56:24,803 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-20 05:56:24,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:56:24,805 INFO L225 Difference]: With dead ends: 161 [2020-10-20 05:56:24,805 INFO L226 Difference]: Without dead ends: 161 [2020-10-20 05:56:24,805 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 05:56:24,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-10-20 05:56:24,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2020-10-20 05:56:24,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-20 05:56:24,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 183 transitions. [2020-10-20 05:56:24,812 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 183 transitions. Word has length 17 [2020-10-20 05:56:24,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:56:24,812 INFO L481 AbstractCegarLoop]: Abstraction has 161 states and 183 transitions. [2020-10-20 05:56:24,812 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 05:56:24,812 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 183 transitions. [2020-10-20 05:56:24,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-20 05:56:24,813 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:56:24,814 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:56:25,026 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-10-20 05:56:25,027 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr72REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr70REQUIRES_VIOLATION, mainErr74ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr68REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr66REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr76ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr73ASSERT_VIOLATIONMEMORY_FREE, mainErr63REQUIRES_VIOLATION, mainErr61REQUIRES_VIOLATION, mainErr55ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr71REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr69REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr54ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67REQUIRES_VIOLATION, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr62REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr58REQUIRES_VIOLATION, mainErr75ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-10-20 05:56:25,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:56:25,028 INFO L82 PathProgramCache]: Analyzing trace with hash -87868968, now seen corresponding path program 1 times [2020-10-20 05:56:25,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 05:56:25,029 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1501251045] [2020-10-20 05:56:25,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-10-20 05:56:25,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:56:25,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 05:56:25,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:56:25,151 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-20 05:56:25,152 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:56:25,154 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:56:25,154 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:56:25,155 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-20 05:56:25,168 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-10-20 05:56:25,168 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:56:25,174 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:56:25,175 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:56:25,176 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:19, output treesize:11 [2020-10-20 05:56:25,192 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2020-10-20 05:56:25,193 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:56:25,194 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:56:25,195 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:56:25,195 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:17, output treesize:5 [2020-10-20 05:56:25,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:56:25,201 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 05:56:25,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:56:25,214 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1501251045] [2020-10-20 05:56:25,214 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:56:25,214 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2020-10-20 05:56:25,215 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657804953] [2020-10-20 05:56:25,215 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 05:56:25,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 05:56:25,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 05:56:25,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 05:56:25,216 INFO L87 Difference]: Start difference. First operand 161 states and 183 transitions. Second operand 5 states. [2020-10-20 05:56:25,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:56:25,905 INFO L93 Difference]: Finished difference Result 262 states and 300 transitions. [2020-10-20 05:56:25,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 05:56:25,906 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-20 05:56:25,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:56:25,908 INFO L225 Difference]: With dead ends: 262 [2020-10-20 05:56:25,908 INFO L226 Difference]: Without dead ends: 262 [2020-10-20 05:56:25,909 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-20 05:56:25,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2020-10-20 05:56:25,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 160. [2020-10-20 05:56:25,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-10-20 05:56:25,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 181 transitions. [2020-10-20 05:56:25,915 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 181 transitions. Word has length 18 [2020-10-20 05:56:25,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:56:25,921 INFO L481 AbstractCegarLoop]: Abstraction has 160 states and 181 transitions. [2020-10-20 05:56:25,921 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 05:56:25,921 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 181 transitions. [2020-10-20 05:56:25,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-20 05:56:25,922 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:56:25,922 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:56:26,128 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-10-20 05:56:26,129 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr72REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr70REQUIRES_VIOLATION, mainErr74ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr68REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr66REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr76ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr73ASSERT_VIOLATIONMEMORY_FREE, mainErr63REQUIRES_VIOLATION, mainErr61REQUIRES_VIOLATION, mainErr55ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr71REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr69REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr54ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67REQUIRES_VIOLATION, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr62REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr58REQUIRES_VIOLATION, mainErr75ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-10-20 05:56:26,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:56:26,130 INFO L82 PathProgramCache]: Analyzing trace with hash -87868967, now seen corresponding path program 1 times [2020-10-20 05:56:26,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 05:56:26,132 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2122109010] [2020-10-20 05:56:26,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2020-10-20 05:56:26,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:56:26,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-20 05:56:26,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:56:26,256 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-20 05:56:26,256 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:56:26,261 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:56:26,262 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:56:26,262 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-10-20 05:56:26,288 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-10-20 05:56:26,288 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:56:26,298 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:56:26,305 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-10-20 05:56:26,305 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 05:56:26,312 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:56:26,314 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:56:26,315 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:30, output treesize:19 [2020-10-20 05:56:26,339 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-10-20 05:56:26,340 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:56:26,369 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:56:26,382 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2020-10-20 05:56:26,382 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 05:56:26,389 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:56:26,390 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:56:26,390 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:33, output treesize:11 [2020-10-20 05:56:26,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:56:26,402 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 05:56:26,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:56:26,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2122109010] [2020-10-20 05:56:26,538 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:56:26,538 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2020-10-20 05:56:26,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786550016] [2020-10-20 05:56:26,539 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-20 05:56:26,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 05:56:26,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-20 05:56:26,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-20 05:56:26,539 INFO L87 Difference]: Start difference. First operand 160 states and 181 transitions. Second operand 8 states. [2020-10-20 05:56:28,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:56:28,491 INFO L93 Difference]: Finished difference Result 293 states and 331 transitions. [2020-10-20 05:56:28,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 05:56:28,492 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2020-10-20 05:56:28,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:56:28,494 INFO L225 Difference]: With dead ends: 293 [2020-10-20 05:56:28,494 INFO L226 Difference]: Without dead ends: 293 [2020-10-20 05:56:28,495 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-20 05:56:28,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2020-10-20 05:56:28,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 159. [2020-10-20 05:56:28,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-10-20 05:56:28,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 179 transitions. [2020-10-20 05:56:28,501 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 179 transitions. Word has length 18 [2020-10-20 05:56:28,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:56:28,502 INFO L481 AbstractCegarLoop]: Abstraction has 159 states and 179 transitions. [2020-10-20 05:56:28,502 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-20 05:56:28,502 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 179 transitions. [2020-10-20 05:56:28,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-20 05:56:28,503 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:56:28,503 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:56:28,706 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-10-20 05:56:28,707 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr72REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr70REQUIRES_VIOLATION, mainErr74ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr68REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr66REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr76ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr73ASSERT_VIOLATIONMEMORY_FREE, mainErr63REQUIRES_VIOLATION, mainErr61REQUIRES_VIOLATION, mainErr55ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr71REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr69REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr54ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67REQUIRES_VIOLATION, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr62REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr58REQUIRES_VIOLATION, mainErr75ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-10-20 05:56:28,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:56:28,708 INFO L82 PathProgramCache]: Analyzing trace with hash -459743974, now seen corresponding path program 1 times [2020-10-20 05:56:28,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 05:56:28,709 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2122852457] [2020-10-20 05:56:28,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2020-10-20 05:56:28,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:56:28,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-20 05:56:28,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:56:28,832 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-10-20 05:56:28,832 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:56:28,847 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:56:28,854 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-10-20 05:56:28,854 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 05:56:28,864 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:56:28,865 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:56:28,865 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:27, output treesize:19 [2020-10-20 05:56:28,914 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2020-10-20 05:56:28,915 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:56:28,924 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:56:28,927 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2020-10-20 05:56:28,928 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 05:56:28,931 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:56:28,932 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:56:28,932 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:37, output treesize:7 [2020-10-20 05:56:28,954 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:56:28,954 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 05:56:28,975 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:56:28,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2122852457] [2020-10-20 05:56:28,976 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:56:28,976 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2020-10-20 05:56:28,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311746052] [2020-10-20 05:56:28,976 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 05:56:28,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 05:56:28,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 05:56:28,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-20 05:56:28,977 INFO L87 Difference]: Start difference. First operand 159 states and 179 transitions. Second operand 6 states. [2020-10-20 05:56:29,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:56:29,599 INFO L93 Difference]: Finished difference Result 196 states and 223 transitions. [2020-10-20 05:56:29,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-20 05:56:29,601 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-10-20 05:56:29,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:56:29,603 INFO L225 Difference]: With dead ends: 196 [2020-10-20 05:56:29,603 INFO L226 Difference]: Without dead ends: 196 [2020-10-20 05:56:29,603 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-20 05:56:29,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-10-20 05:56:29,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 170. [2020-10-20 05:56:29,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-10-20 05:56:29,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 194 transitions. [2020-10-20 05:56:29,613 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 194 transitions. Word has length 19 [2020-10-20 05:56:29,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:56:29,614 INFO L481 AbstractCegarLoop]: Abstraction has 170 states and 194 transitions. [2020-10-20 05:56:29,614 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 05:56:29,614 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 194 transitions. [2020-10-20 05:56:29,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-20 05:56:29,621 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:56:29,622 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:56:29,822 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2020-10-20 05:56:29,823 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr72REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr70REQUIRES_VIOLATION, mainErr74ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr68REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr66REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr76ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr73ASSERT_VIOLATIONMEMORY_FREE, mainErr63REQUIRES_VIOLATION, mainErr61REQUIRES_VIOLATION, mainErr55ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr71REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr69REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr54ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67REQUIRES_VIOLATION, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr62REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr58REQUIRES_VIOLATION, mainErr75ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-10-20 05:56:29,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:56:29,823 INFO L82 PathProgramCache]: Analyzing trace with hash 2020369786, now seen corresponding path program 1 times [2020-10-20 05:56:29,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 05:56:29,826 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2143916225] [2020-10-20 05:56:29,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2020-10-20 05:56:29,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:56:29,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 05:56:29,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:56:29,970 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-20 05:56:29,970 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:56:29,973 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:56:29,973 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:56:29,973 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-20 05:56:29,991 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-10-20 05:56:29,992 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:56:30,001 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:56:30,002 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:56:30,003 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:13 [2020-10-20 05:56:30,023 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2020-10-20 05:56:30,024 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:56:30,026 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:56:30,026 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:56:30,026 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:21, output treesize:5 [2020-10-20 05:56:30,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:56:30,034 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 05:56:30,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:56:30,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2143916225] [2020-10-20 05:56:30,056 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:56:30,056 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2020-10-20 05:56:30,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366907905] [2020-10-20 05:56:30,057 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 05:56:30,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 05:56:30,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 05:56:30,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 05:56:30,058 INFO L87 Difference]: Start difference. First operand 170 states and 194 transitions. Second operand 5 states. [2020-10-20 05:56:30,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:56:30,818 INFO L93 Difference]: Finished difference Result 269 states and 309 transitions. [2020-10-20 05:56:30,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 05:56:30,818 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-10-20 05:56:30,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:56:30,821 INFO L225 Difference]: With dead ends: 269 [2020-10-20 05:56:30,821 INFO L226 Difference]: Without dead ends: 269 [2020-10-20 05:56:30,821 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-20 05:56:30,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2020-10-20 05:56:30,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 169. [2020-10-20 05:56:30,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-10-20 05:56:30,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 192 transitions. [2020-10-20 05:56:30,827 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 192 transitions. Word has length 20 [2020-10-20 05:56:30,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:56:30,827 INFO L481 AbstractCegarLoop]: Abstraction has 169 states and 192 transitions. [2020-10-20 05:56:30,827 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 05:56:30,827 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 192 transitions. [2020-10-20 05:56:30,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-20 05:56:30,828 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:56:30,828 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:56:31,038 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 mathsat -unsat_core_generation=3 [2020-10-20 05:56:31,040 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr72REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr70REQUIRES_VIOLATION, mainErr74ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr68REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr66REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr76ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr73ASSERT_VIOLATIONMEMORY_FREE, mainErr63REQUIRES_VIOLATION, mainErr61REQUIRES_VIOLATION, mainErr55ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr71REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr69REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr54ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67REQUIRES_VIOLATION, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr62REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr58REQUIRES_VIOLATION, mainErr75ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-10-20 05:56:31,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:56:31,040 INFO L82 PathProgramCache]: Analyzing trace with hash 2020369787, now seen corresponding path program 1 times [2020-10-20 05:56:31,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 05:56:31,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [977598321] [2020-10-20 05:56:31,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2020-10-20 05:56:31,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:56:31,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-20 05:56:31,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:56:31,173 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-20 05:56:31,173 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:56:31,184 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:56:31,184 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:56:31,185 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-10-20 05:56:31,206 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-10-20 05:56:31,207 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:56:31,219 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:56:31,225 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-10-20 05:56:31,225 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 05:56:31,240 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:56:31,241 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:56:31,241 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:34, output treesize:23 [2020-10-20 05:56:31,271 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2020-10-20 05:56:31,272 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:56:31,283 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:56:31,286 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2020-10-20 05:56:31,286 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 05:56:31,290 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:56:31,290 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:56:31,290 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:39, output treesize:9 [2020-10-20 05:56:31,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:56:31,302 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 05:56:31,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:56:31,449 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [977598321] [2020-10-20 05:56:31,449 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:56:31,450 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2020-10-20 05:56:31,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760068970] [2020-10-20 05:56:31,450 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-20 05:56:31,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 05:56:31,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-20 05:56:31,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-20 05:56:31,452 INFO L87 Difference]: Start difference. First operand 169 states and 192 transitions. Second operand 8 states. [2020-10-20 05:56:33,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:56:33,682 INFO L93 Difference]: Finished difference Result 300 states and 340 transitions. [2020-10-20 05:56:33,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 05:56:33,683 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2020-10-20 05:56:33,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:56:33,686 INFO L225 Difference]: With dead ends: 300 [2020-10-20 05:56:33,686 INFO L226 Difference]: Without dead ends: 300 [2020-10-20 05:56:33,686 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-20 05:56:33,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2020-10-20 05:56:33,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 168. [2020-10-20 05:56:33,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-10-20 05:56:33,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 190 transitions. [2020-10-20 05:56:33,691 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 190 transitions. Word has length 20 [2020-10-20 05:56:33,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:56:33,692 INFO L481 AbstractCegarLoop]: Abstraction has 168 states and 190 transitions. [2020-10-20 05:56:33,692 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-20 05:56:33,692 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 190 transitions. [2020-10-20 05:56:33,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-20 05:56:33,693 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:56:33,693 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:56:33,905 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 mathsat -unsat_core_generation=3 [2020-10-20 05:56:33,906 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr72REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr70REQUIRES_VIOLATION, mainErr74ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr68REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr66REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr76ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr73ASSERT_VIOLATIONMEMORY_FREE, mainErr63REQUIRES_VIOLATION, mainErr61REQUIRES_VIOLATION, mainErr55ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr71REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr69REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr54ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67REQUIRES_VIOLATION, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr62REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr58REQUIRES_VIOLATION, mainErr75ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-10-20 05:56:33,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:56:33,907 INFO L82 PathProgramCache]: Analyzing trace with hash 83892920, now seen corresponding path program 1 times [2020-10-20 05:56:33,907 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 05:56:33,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [300932657] [2020-10-20 05:56:33,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 13 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with mathsat -unsat_core_generation=3 [2020-10-20 05:56:34,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:56:34,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 05:56:34,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:56:34,036 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:56:34,036 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 05:56:34,044 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:56:34,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [300932657] [2020-10-20 05:56:34,045 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:56:34,045 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-10-20 05:56:34,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351439674] [2020-10-20 05:56:34,046 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 05:56:34,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 05:56:34,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 05:56:34,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 05:56:34,046 INFO L87 Difference]: Start difference. First operand 168 states and 190 transitions. Second operand 4 states. [2020-10-20 05:56:34,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:56:34,437 INFO L93 Difference]: Finished difference Result 208 states and 234 transitions. [2020-10-20 05:56:34,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 05:56:34,438 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-10-20 05:56:34,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:56:34,439 INFO L225 Difference]: With dead ends: 208 [2020-10-20 05:56:34,439 INFO L226 Difference]: Without dead ends: 208 [2020-10-20 05:56:34,440 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-20 05:56:34,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2020-10-20 05:56:34,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 170. [2020-10-20 05:56:34,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-10-20 05:56:34,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 194 transitions. [2020-10-20 05:56:34,444 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 194 transitions. Word has length 21 [2020-10-20 05:56:34,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:56:34,445 INFO L481 AbstractCegarLoop]: Abstraction has 170 states and 194 transitions. [2020-10-20 05:56:34,445 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 05:56:34,445 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 194 transitions. [2020-10-20 05:56:34,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-20 05:56:34,446 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:56:34,446 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:56:34,655 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 mathsat -unsat_core_generation=3 [2020-10-20 05:56:34,656 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr72REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr70REQUIRES_VIOLATION, mainErr74ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr68REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr66REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr76ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr73ASSERT_VIOLATIONMEMORY_FREE, mainErr63REQUIRES_VIOLATION, mainErr61REQUIRES_VIOLATION, mainErr55ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr71REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr69REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr54ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67REQUIRES_VIOLATION, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr62REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr58REQUIRES_VIOLATION, mainErr75ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-10-20 05:56:34,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:56:34,657 INFO L82 PathProgramCache]: Analyzing trace with hash 83892921, now seen corresponding path program 1 times [2020-10-20 05:56:34,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 05:56:34,658 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1902890970] [2020-10-20 05:56:34,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 14 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with mathsat -unsat_core_generation=3 [2020-10-20 05:56:34,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:56:34,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-20 05:56:34,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:56:34,827 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:56:34,827 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 05:56:34,915 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-20 05:56:34,930 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2020-10-20 05:56:34,931 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-20 05:56:34,944 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2020-10-20 05:56:34,945 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-20 05:56:34,968 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:56:34,969 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 2 xjuncts. [2020-10-20 05:56:34,969 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:31, output treesize:25 [2020-10-20 05:56:35,172 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:56:35,175 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1902890970] [2020-10-20 05:56:35,175 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-20 05:56:35,176 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2020-10-20 05:56:35,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168913254] [2020-10-20 05:56:35,176 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 05:56:35,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 05:56:35,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 05:56:35,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-20 05:56:35,179 INFO L87 Difference]: Start difference. First operand 170 states and 194 transitions. Second operand 6 states. [2020-10-20 05:56:36,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:56:36,298 INFO L93 Difference]: Finished difference Result 284 states and 317 transitions. [2020-10-20 05:56:36,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-20 05:56:36,303 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-10-20 05:56:36,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:56:36,305 INFO L225 Difference]: With dead ends: 284 [2020-10-20 05:56:36,305 INFO L226 Difference]: Without dead ends: 284 [2020-10-20 05:56:36,305 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2020-10-20 05:56:36,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2020-10-20 05:56:36,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 173. [2020-10-20 05:56:36,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2020-10-20 05:56:36,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 199 transitions. [2020-10-20 05:56:36,309 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 199 transitions. Word has length 21 [2020-10-20 05:56:36,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:56:36,309 INFO L481 AbstractCegarLoop]: Abstraction has 173 states and 199 transitions. [2020-10-20 05:56:36,309 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 05:56:36,310 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 199 transitions. [2020-10-20 05:56:36,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-20 05:56:36,310 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:56:36,310 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:56:36,517 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 mathsat -unsat_core_generation=3 [2020-10-20 05:56:36,517 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr72REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr70REQUIRES_VIOLATION, mainErr74ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr68REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr66REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr76ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr73ASSERT_VIOLATIONMEMORY_FREE, mainErr63REQUIRES_VIOLATION, mainErr61REQUIRES_VIOLATION, mainErr55ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr71REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr69REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr54ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67REQUIRES_VIOLATION, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr62REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr58REQUIRES_VIOLATION, mainErr75ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-10-20 05:56:36,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:56:36,518 INFO L82 PathProgramCache]: Analyzing trace with hash 83894842, now seen corresponding path program 1 times [2020-10-20 05:56:36,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 05:56:36,519 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [599252175] [2020-10-20 05:56:36,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 15 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with mathsat -unsat_core_generation=3 [2020-10-20 05:56:36,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:56:36,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 15 conjunts are in the unsatisfiable core [2020-10-20 05:56:36,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:56:36,693 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-10-20 05:56:36,694 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:56:36,704 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:56:36,707 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-10-20 05:56:36,707 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 05:56:36,715 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:56:36,716 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:56:36,716 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:26, output treesize:18 [2020-10-20 05:56:36,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 05:56:36,738 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-10-20 05:56:36,738 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:56:36,757 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:56:36,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 05:56:36,763 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-10-20 05:56:36,763 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 05:56:36,777 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:56:36,777 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:56:36,777 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:44, output treesize:36 [2020-10-20 05:56:36,831 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2020-10-20 05:56:36,833 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:56:36,842 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:56:36,845 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:56:36,846 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 10 [2020-10-20 05:56:36,847 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 05:56:36,851 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:56:36,851 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:56:36,852 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:43, output treesize:7 [2020-10-20 05:56:36,896 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:56:36,896 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 05:56:36,968 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:56:36,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [599252175] [2020-10-20 05:56:36,968 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:56:36,969 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 7] imperfect sequences [] total 11 [2020-10-20 05:56:36,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091584799] [2020-10-20 05:56:36,969 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-20 05:56:36,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 05:56:36,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-20 05:56:36,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-20 05:56:36,970 INFO L87 Difference]: Start difference. First operand 173 states and 199 transitions. Second operand 11 states. [2020-10-20 05:56:38,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:56:38,202 INFO L93 Difference]: Finished difference Result 343 states and 387 transitions. [2020-10-20 05:56:38,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-20 05:56:38,202 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-10-20 05:56:38,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:56:38,204 INFO L225 Difference]: With dead ends: 343 [2020-10-20 05:56:38,204 INFO L226 Difference]: Without dead ends: 343 [2020-10-20 05:56:38,205 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2020-10-20 05:56:38,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2020-10-20 05:56:38,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 220. [2020-10-20 05:56:38,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-10-20 05:56:38,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 264 transitions. [2020-10-20 05:56:38,212 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 264 transitions. Word has length 21 [2020-10-20 05:56:38,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:56:38,212 INFO L481 AbstractCegarLoop]: Abstraction has 220 states and 264 transitions. [2020-10-20 05:56:38,212 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-20 05:56:38,212 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 264 transitions. [2020-10-20 05:56:38,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-20 05:56:38,213 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:56:38,213 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:56:38,425 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 mathsat -unsat_core_generation=3 [2020-10-20 05:56:38,426 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr72REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr70REQUIRES_VIOLATION, mainErr74ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr68REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr66REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr76ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr73ASSERT_VIOLATIONMEMORY_FREE, mainErr63REQUIRES_VIOLATION, mainErr61REQUIRES_VIOLATION, mainErr55ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr71REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr69REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr54ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67REQUIRES_VIOLATION, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr62REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr58REQUIRES_VIOLATION, mainErr75ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-10-20 05:56:38,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:56:38,427 INFO L82 PathProgramCache]: Analyzing trace with hash -2069262949, now seen corresponding path program 1 times [2020-10-20 05:56:38,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 05:56:38,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [694308924] [2020-10-20 05:56:38,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 16 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with mathsat -unsat_core_generation=3 [2020-10-20 05:56:38,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:56:38,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-20 05:56:38,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:56:38,556 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-20 05:56:38,556 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:56:38,558 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:56:38,558 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:56:38,558 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-20 05:56:38,588 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:56:38,589 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 39 [2020-10-20 05:56:38,589 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:56:38,606 INFO L625 ElimStorePlain]: treesize reduction 14, result has 51.7 percent of original size [2020-10-20 05:56:38,607 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:56:38,607 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:17, output treesize:15 [2020-10-20 05:56:38,629 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-10-20 05:56:38,629 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:56:38,639 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:56:38,640 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:56:38,640 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:30, output treesize:27 [2020-10-20 05:56:38,720 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:56:38,720 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 51 [2020-10-20 05:56:38,722 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2020-10-20 05:56:38,729 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-10-20 05:56:38,731 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 3 xjuncts. [2020-10-20 05:56:38,777 INFO L625 ElimStorePlain]: treesize reduction 71, result has 33.6 percent of original size [2020-10-20 05:56:38,778 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-20 05:56:38,778 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:44, output treesize:36 [2020-10-20 05:56:38,827 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:56:38,827 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 33 [2020-10-20 05:56:38,828 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:56:38,843 INFO L625 ElimStorePlain]: treesize reduction 12, result has 58.6 percent of original size [2020-10-20 05:56:38,849 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-20 05:56:38,850 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:43, output treesize:17 [2020-10-20 05:56:38,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:56:38,873 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 05:56:49,468 WARN L193 SmtUtils]: Spent 2.00 s on a formula simplification that was a NOOP. DAG size: 16 [2020-10-20 05:56:51,494 WARN L838 $PredicateComparison]: unable to prove that (forall ((|main_#t~mem16.offset| (_ BitVec 32))) (= (_ bv1 1) (select |c_#valid| (select (select (let ((.cse0 (select (select |c_#memory_$Pointer$.base| c_main_~n~0.base) c_main_~n~0.offset))) (store |c_#memory_$Pointer$.base| .cse0 (store (select |c_#memory_$Pointer$.base| .cse0) |main_#t~mem16.offset| (_ bv0 32)))) c_main_~n~0.base) c_main_~n~0.offset)))) is different from false [2020-10-20 05:56:51,501 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:56:51,525 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:56:51,526 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-20 05:56:51,528 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2020-10-20 05:56:51,528 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:33, output treesize:20 [2020-10-20 05:56:51,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:56:51,632 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [694308924] [2020-10-20 05:56:51,632 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:56:51,632 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 15 [2020-10-20 05:56:51,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625182961] [2020-10-20 05:56:51,633 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-20 05:56:51,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 05:56:51,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-20 05:56:51,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=160, Unknown=6, NotChecked=26, Total=240 [2020-10-20 05:56:51,634 INFO L87 Difference]: Start difference. First operand 220 states and 264 transitions. Second operand 16 states. [2020-10-20 05:56:53,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:56:53,787 INFO L93 Difference]: Finished difference Result 263 states and 311 transitions. [2020-10-20 05:56:53,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-20 05:56:53,788 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-10-20 05:56:53,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:56:53,790 INFO L225 Difference]: With dead ends: 263 [2020-10-20 05:56:53,790 INFO L226 Difference]: Without dead ends: 263 [2020-10-20 05:56:53,791 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 13.1s TimeCoverageRelationStatistics Valid=165, Invalid=385, Unknown=6, NotChecked=44, Total=600 [2020-10-20 05:56:53,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2020-10-20 05:56:53,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 219. [2020-10-20 05:56:53,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2020-10-20 05:56:53,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 262 transitions. [2020-10-20 05:56:53,798 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 262 transitions. Word has length 21 [2020-10-20 05:56:53,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:56:53,798 INFO L481 AbstractCegarLoop]: Abstraction has 219 states and 262 transitions. [2020-10-20 05:56:53,798 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-20 05:56:53,798 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 262 transitions. [2020-10-20 05:56:53,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-20 05:56:53,799 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:56:53,799 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:56:54,013 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 mathsat -unsat_core_generation=3 [2020-10-20 05:56:54,014 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr72REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr70REQUIRES_VIOLATION, mainErr74ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr68REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr66REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr76ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr73ASSERT_VIOLATIONMEMORY_FREE, mainErr63REQUIRES_VIOLATION, mainErr61REQUIRES_VIOLATION, mainErr55ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr71REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr69REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr54ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67REQUIRES_VIOLATION, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr62REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr58REQUIRES_VIOLATION, mainErr75ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-10-20 05:56:54,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:56:54,014 INFO L82 PathProgramCache]: Analyzing trace with hash -2069262948, now seen corresponding path program 1 times [2020-10-20 05:56:54,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 05:56:54,015 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [306461998] [2020-10-20 05:56:54,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 17 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with mathsat -unsat_core_generation=3 [2020-10-20 05:56:54,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:56:54,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-20 05:56:54,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:56:54,152 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-20 05:56:54,152 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:56:54,154 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:56:54,154 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:56:54,154 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-20 05:56:54,168 INFO L441 ElimStorePlain]: Different costs {0=[|v_#length_156|], 1=[|v_#valid_172|]} [2020-10-20 05:56:54,170 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-20 05:56:54,171 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:56:54,181 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:56:54,188 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:56:54,189 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2020-10-20 05:56:54,189 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 05:56:54,196 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:56:54,197 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:56:54,197 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:20, output treesize:13 [2020-10-20 05:56:54,213 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [306461998] [2020-10-20 05:56:54,214 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-20 05:56:54,214 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1225353439] [2020-10-20 05:56:54,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 18 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-20 05:56:54,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:56:54,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-20 05:56:54,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:56:54,514 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-20 05:56:54,514 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:56:54,516 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:56:54,517 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:56:54,517 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-20 05:56:54,522 INFO L441 ElimStorePlain]: Different costs {0=[|v_#length_157|], 1=[|v_#valid_174|]} [2020-10-20 05:56:54,525 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-20 05:56:54,525 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:56:54,536 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:56:54,551 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:56:54,551 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2020-10-20 05:56:54,552 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 05:56:54,558 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:56:54,559 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:56:54,559 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:20, output treesize:13 [2020-10-20 05:56:54,562 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-20 05:56:54,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [153411629] [2020-10-20 05:56:54,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 05:56:54,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:56:54,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-20 05:56:54,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:56:54,682 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-20 05:56:54,682 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:56:54,687 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:56:54,687 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:56:54,687 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-20 05:56:54,699 INFO L441 ElimStorePlain]: Different costs {0=[|v_#length_158|], 1=[|v_#valid_176|]} [2020-10-20 05:56:54,703 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-20 05:56:54,703 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:56:54,714 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:56:54,722 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:56:54,722 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2020-10-20 05:56:54,723 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 05:56:54,730 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:56:54,731 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:56:54,731 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:20, output treesize:13 [2020-10-20 05:56:54,733 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-20 05:56:54,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:56:54,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-10-20 05:56:54,734 ERROR L205 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2020-10-20 05:56:54,734 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 05:56:55,338 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 mathsat -unsat_core_generation=3,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,18 cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-20 05:56:55,352 WARN L238 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-20 05:56:55,353 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 05:56:55 BoogieIcfgContainer [2020-10-20 05:56:55,353 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 05:56:55,353 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 05:56:55,353 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 05:56:55,353 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 05:56:55,354 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:56:19" (3/4) ... [2020-10-20 05:56:55,358 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 05:56:55,358 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 05:56:55,359 INFO L168 Benchmark]: Toolchain (without parser) took 38070.86 ms. Allocated memory was 34.6 MB in the beginning and 87.0 MB in the end (delta: 52.4 MB). Free memory was 10.0 MB in the beginning and 19.2 MB in the end (delta: -9.2 MB). Peak memory consumption was 43.3 MB. Max. memory is 14.3 GB. [2020-10-20 05:56:55,359 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 33.6 MB. Free memory was 18.4 MB in the beginning and 18.3 MB in the end (delta: 41.9 kB). Peak memory consumption was 41.9 kB. Max. memory is 14.3 GB. [2020-10-20 05:56:55,359 INFO L168 Benchmark]: CACSL2BoogieTranslator took 802.11 ms. Allocated memory was 34.6 MB in the beginning and 45.6 MB in the end (delta: 11.0 MB). Free memory was 9.2 MB in the beginning and 13.9 MB in the end (delta: -4.7 MB). Peak memory consumption was 9.3 MB. Max. memory is 14.3 GB. [2020-10-20 05:56:55,359 INFO L168 Benchmark]: Boogie Preprocessor took 82.52 ms. Allocated memory was 45.6 MB in the beginning and 46.1 MB in the end (delta: 524.3 kB). Free memory was 13.9 MB in the beginning and 25.7 MB in the end (delta: -11.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 14.3 GB. [2020-10-20 05:56:55,360 INFO L168 Benchmark]: RCFGBuilder took 1145.27 ms. Allocated memory was 46.1 MB in the beginning and 49.8 MB in the end (delta: 3.7 MB). Free memory was 25.4 MB in the beginning and 14.2 MB in the end (delta: 11.2 MB). Peak memory consumption was 18.8 MB. Max. memory is 14.3 GB. [2020-10-20 05:56:55,360 INFO L168 Benchmark]: TraceAbstraction took 36026.55 ms. Allocated memory was 49.8 MB in the beginning and 87.0 MB in the end (delta: 37.2 MB). Free memory was 13.9 MB in the beginning and 19.2 MB in the end (delta: -5.3 MB). Peak memory consumption was 31.9 MB. Max. memory is 14.3 GB. [2020-10-20 05:56:55,360 INFO L168 Benchmark]: Witness Printer took 4.61 ms. Allocated memory is still 87.0 MB. Free memory is still 19.2 MB. There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 05:56:55,362 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 33.6 MB. Free memory was 18.4 MB in the beginning and 18.3 MB in the end (delta: 41.9 kB). Peak memory consumption was 41.9 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 802.11 ms. Allocated memory was 34.6 MB in the beginning and 45.6 MB in the end (delta: 11.0 MB). Free memory was 9.2 MB in the beginning and 13.9 MB in the end (delta: -4.7 MB). Peak memory consumption was 9.3 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 82.52 ms. Allocated memory was 45.6 MB in the beginning and 46.1 MB in the end (delta: 524.3 kB). Free memory was 13.9 MB in the beginning and 25.7 MB in the end (delta: -11.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 14.3 GB. * RCFGBuilder took 1145.27 ms. Allocated memory was 46.1 MB in the beginning and 49.8 MB in the end (delta: 3.7 MB). Free memory was 25.4 MB in the beginning and 14.2 MB in the end (delta: 11.2 MB). Peak memory consumption was 18.8 MB. Max. memory is 14.3 GB. * TraceAbstraction took 36026.55 ms. Allocated memory was 49.8 MB in the beginning and 87.0 MB in the end (delta: 37.2 MB). Free memory was 13.9 MB in the beginning and 19.2 MB in the end (delta: -5.3 MB). Peak memory consumption was 31.9 MB. Max. memory is 14.3 GB. * Witness Printer took 4.61 ms. Allocated memory is still 87.0 MB. Free memory is still 19.2 MB. There was no memory consumed. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 547]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L533] struct TreeNode* root = malloc(sizeof(*root)), *n; [L534] root->left = ((void *)0) [L535] root->right = ((void *)0) [L536] COND TRUE __VERIFIER_nondet_int() [L537] n = root [L538] EXPR n->left [L538] n->left && n->right [L538] COND FALSE !(n->left && n->right) [L544] EXPR n->left [L544] COND TRUE !n->left && __VERIFIER_nondet_int() [L545] n->left = malloc(sizeof(*n)) [L546] EXPR n->left [L546] n->left->left = ((void *)0) [L547] EXPR n->left [L547] n->left->right = ((void *)0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 184 locations, 78 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 35.9s, OverallIterations: 16, TraceHistogramMax: 2, AutomataDifference: 13.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1810 SDtfs, 2779 SDslu, 3666 SDs, 0 SdLazy, 4720 SolverSat, 226 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 10.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 516 GetRequests, 398 SyntacticMatches, 6 SemanticMatches, 112 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 15.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=220occurred in iteration=14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 15 MinimizatonAttempts, 908 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 15.3s InterpolantComputationTime, 243 NumberOfCodeBlocks, 243 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 456 ConstructedInterpolants, 13 QuantifiedInterpolants, 41186 SizeOfPredicates, 90 NumberOfNonLiveVariables, 1523 ConjunctsInSsa, 94 ConjunctsInUnsatCore, 30 InterpolantComputations, 29 PerfectInterpolantSequences, 14/16 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...