./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/array-memsafety/array01-alloca-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 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/array-memsafety/array01-alloca-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0e0283c2b515067609d1d09b2bc4afe3d1f1d910 ............................................................................................................................. 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/array-memsafety/array01-alloca-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0e0283c2b515067609d1d09b2bc4afe3d1f1d910 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 05:48:31,094 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 05:48:31,096 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 05:48:31,133 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 05:48:31,133 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 05:48:31,146 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 05:48:31,148 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 05:48:31,149 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 05:48:31,151 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 05:48:31,152 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 05:48:31,153 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 05:48:31,154 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 05:48:31,155 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 05:48:31,156 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 05:48:31,157 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 05:48:31,158 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 05:48:31,159 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 05:48:31,160 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 05:48:31,162 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 05:48:31,164 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 05:48:31,176 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 05:48:31,178 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 05:48:31,179 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 05:48:31,180 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 05:48:31,182 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 05:48:31,182 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 05:48:31,182 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 05:48:31,185 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 05:48:31,186 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 05:48:31,187 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 05:48:31,187 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 05:48:31,187 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 05:48:31,191 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 05:48:31,192 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 05:48:31,193 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 05:48:31,193 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 05:48:31,194 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 05:48:31,194 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 05:48:31,194 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 05:48:31,195 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 05:48:31,196 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 05:48:31,197 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-10-20 05:48:31,237 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 05:48:31,237 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 05:48:31,239 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 05:48:31,240 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 05:48:31,240 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 05:48:31,240 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 05:48:31,240 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 05:48:31,241 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 05:48:31,241 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 05:48:31,241 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 05:48:31,242 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 05:48:31,243 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-20 05:48:31,243 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-20 05:48:31,243 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-20 05:48:31,244 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 05:48:31,244 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-20 05:48:31,244 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 05:48:31,244 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 05:48:31,245 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 05:48:31,245 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 05:48:31,245 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 05:48:31,245 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 05:48:31,246 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 05:48:31,246 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 05:48:31,246 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 05:48:31,246 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 05:48:31,247 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 05:48:31,247 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 05:48:31,247 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 -> 0e0283c2b515067609d1d09b2bc4afe3d1f1d910 [2020-10-20 05:48:31,492 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 05:48:31,508 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 05:48:31,513 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 05:48:31,514 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 05:48:31,515 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 05:48:31,516 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/array01-alloca-2.i [2020-10-20 05:48:31,588 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d35bcfbc9/27c36f80b6434034a54618ec5fbf8c7e/FLAG45fce8c88 [2020-10-20 05:48:32,150 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 05:48:32,151 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/array01-alloca-2.i [2020-10-20 05:48:32,167 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d35bcfbc9/27c36f80b6434034a54618ec5fbf8c7e/FLAG45fce8c88 [2020-10-20 05:48:32,494 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d35bcfbc9/27c36f80b6434034a54618ec5fbf8c7e [2020-10-20 05:48:32,497 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 05:48:32,504 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-20 05:48:32,505 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 05:48:32,506 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 05:48:32,509 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 05:48:32,510 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:48:32" (1/1) ... [2020-10-20 05:48:32,513 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5dbbf891 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:48:32, skipping insertion in model container [2020-10-20 05:48:32,513 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:48:32" (1/1) ... [2020-10-20 05:48:32,521 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 05:48:32,566 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 05:48:32,937 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 05:48:32,952 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 05:48:32,953 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5a8a4d1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:48:32, skipping insertion in model container [2020-10-20 05:48:32,953 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 05:48:32,954 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2020-10-20 05:48:32,958 INFO L168 Benchmark]: Toolchain (without parser) took 457.48 ms. Allocated memory was 36.2 MB in the beginning and 44.6 MB in the end (delta: 8.4 MB). Free memory was 15.2 MB in the beginning and 25.0 MB in the end (delta: -9.9 MB). Peak memory consumption was 12.5 MB. Max. memory is 14.3 GB. [2020-10-20 05:48:32,959 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 34.1 MB. Free memory was 10.0 MB in the beginning and 9.9 MB in the end (delta: 45.7 kB). Peak memory consumption was 45.7 kB. Max. memory is 14.3 GB. [2020-10-20 05:48:32,962 INFO L168 Benchmark]: CACSL2BoogieTranslator took 448.59 ms. Allocated memory was 36.2 MB in the beginning and 44.6 MB in the end (delta: 8.4 MB). Free memory was 14.2 MB in the beginning and 25.0 MB in the end (delta: -10.8 MB). Peak memory consumption was 11.5 MB. Max. memory is 14.3 GB. [2020-10-20 05:48:32,966 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 34.1 MB. Free memory was 10.0 MB in the beginning and 9.9 MB in the end (delta: 45.7 kB). Peak memory consumption was 45.7 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 448.59 ms. Allocated memory was 36.2 MB in the beginning and 44.6 MB in the end (delta: 8.4 MB). Free memory was 14.2 MB in the beginning and 25.0 MB in the end (delta: -10.8 MB). Peak memory consumption was 11.5 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 529]: 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 05:48:34,952 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 05:48:34,955 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 05:48:34,999 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 05:48:34,999 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 05:48:35,012 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 05:48:35,013 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 05:48:35,016 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 05:48:35,019 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 05:48:35,022 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 05:48:35,024 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 05:48:35,026 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 05:48:35,026 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 05:48:35,029 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 05:48:35,031 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 05:48:35,033 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 05:48:35,035 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 05:48:35,038 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 05:48:35,041 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 05:48:35,053 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 05:48:35,055 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 05:48:35,057 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 05:48:35,059 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 05:48:35,060 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 05:48:35,065 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 05:48:35,065 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 05:48:35,066 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 05:48:35,068 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 05:48:35,068 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 05:48:35,069 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 05:48:35,070 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 05:48:35,070 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 05:48:35,072 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 05:48:35,073 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 05:48:35,075 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 05:48:35,075 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 05:48:35,076 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 05:48:35,076 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 05:48:35,077 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 05:48:35,078 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 05:48:35,079 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 05:48:35,080 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2020-10-20 05:48:35,123 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 05:48:35,123 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 05:48:35,125 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 05:48:35,126 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 05:48:35,126 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 05:48:35,126 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 05:48:35,127 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 05:48:35,127 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 05:48:35,127 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 05:48:35,127 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 05:48:35,129 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 05:48:35,129 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-20 05:48:35,129 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-20 05:48:35,130 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-20 05:48:35,130 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 05:48:35,130 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-20 05:48:35,130 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-20 05:48:35,131 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-20 05:48:35,131 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 05:48:35,131 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 05:48:35,131 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 05:48:35,132 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 05:48:35,132 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 05:48:35,132 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 05:48:35,132 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 05:48:35,133 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 05:48:35,133 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 05:48:35,133 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-20 05:48:35,134 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-20 05:48:35,134 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 05:48:35,134 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-20 05:48:35,134 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 -> 0e0283c2b515067609d1d09b2bc4afe3d1f1d910 [2020-10-20 05:48:35,332 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 05:48:35,345 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 05:48:35,348 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 05:48:35,350 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 05:48:35,351 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 05:48:35,351 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/array01-alloca-2.i [2020-10-20 05:48:35,419 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a951e7342/c802b630054e418a82769b2133d47a76/FLAG352a24b79 [2020-10-20 05:48:35,989 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 05:48:35,990 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/array01-alloca-2.i [2020-10-20 05:48:36,004 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a951e7342/c802b630054e418a82769b2133d47a76/FLAG352a24b79 [2020-10-20 05:48:36,281 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a951e7342/c802b630054e418a82769b2133d47a76 [2020-10-20 05:48:36,284 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 05:48:36,290 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-20 05:48:36,291 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 05:48:36,291 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 05:48:36,294 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 05:48:36,296 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:48:36" (1/1) ... [2020-10-20 05:48:36,298 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4eab8fde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:48:36, skipping insertion in model container [2020-10-20 05:48:36,299 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:48:36" (1/1) ... [2020-10-20 05:48:36,306 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 05:48:36,343 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 05:48:36,778 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 05:48:36,794 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2020-10-20 05:48:36,805 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 05:48:36,872 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 05:48:36,885 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 05:48:36,943 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 05:48:37,009 INFO L208 MainTranslator]: Completed translation [2020-10-20 05:48:37,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:48:37 WrapperNode [2020-10-20 05:48:37,011 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 05:48:37,012 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 05:48:37,013 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 05:48:37,013 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 05:48:37,025 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:48:37" (1/1) ... [2020-10-20 05:48:37,025 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:48:37" (1/1) ... [2020-10-20 05:48:37,043 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:48:37" (1/1) ... [2020-10-20 05:48:37,043 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:48:37" (1/1) ... [2020-10-20 05:48:37,061 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:48:37" (1/1) ... [2020-10-20 05:48:37,067 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:48:37" (1/1) ... [2020-10-20 05:48:37,071 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:48:37" (1/1) ... [2020-10-20 05:48:37,078 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 05:48:37,079 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 05:48:37,079 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 05:48:37,079 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 05:48:37,080 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:48:37" (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 05:48:37,160 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-20 05:48:37,160 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 05:48:37,161 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2020-10-20 05:48:37,161 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-20 05:48:37,161 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-20 05:48:37,162 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-10-20 05:48:37,162 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-10-20 05:48:37,162 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-10-20 05:48:37,162 INFO L138 BoogieDeclarations]: Found implementation of procedure test_fun [2020-10-20 05:48:37,162 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-20 05:48:37,163 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-20 05:48:37,163 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-20 05:48:37,163 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-20 05:48:37,163 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-20 05:48:37,163 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-20 05:48:37,163 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-20 05:48:37,163 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-20 05:48:37,164 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-20 05:48:37,164 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-20 05:48:37,164 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-20 05:48:37,164 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-20 05:48:37,165 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-20 05:48:37,165 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-20 05:48:37,165 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-20 05:48:37,165 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-20 05:48:37,165 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-20 05:48:37,165 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-20 05:48:37,165 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-20 05:48:37,166 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-10-20 05:48:37,166 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-10-20 05:48:37,166 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-10-20 05:48:37,166 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-20 05:48:37,166 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-20 05:48:37,166 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-20 05:48:37,166 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-20 05:48:37,167 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-20 05:48:37,167 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-20 05:48:37,167 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-20 05:48:37,167 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-20 05:48:37,167 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-20 05:48:37,167 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-20 05:48:37,167 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-20 05:48:37,168 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-20 05:48:37,168 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-20 05:48:37,168 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-20 05:48:37,168 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-20 05:48:37,168 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-20 05:48:37,168 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-20 05:48:37,168 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-20 05:48:37,168 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-20 05:48:37,169 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-20 05:48:37,169 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-20 05:48:37,169 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-20 05:48:37,169 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-20 05:48:37,169 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-20 05:48:37,170 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-20 05:48:37,170 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-20 05:48:37,170 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-20 05:48:37,170 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-20 05:48:37,170 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-20 05:48:37,171 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-20 05:48:37,171 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-20 05:48:37,171 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-20 05:48:37,171 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-20 05:48:37,171 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-20 05:48:37,172 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-20 05:48:37,172 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-20 05:48:37,172 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-20 05:48:37,172 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-20 05:48:37,173 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-20 05:48:37,173 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-20 05:48:37,173 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-20 05:48:37,173 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-20 05:48:37,180 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-20 05:48:37,180 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-20 05:48:37,181 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-20 05:48:37,181 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-20 05:48:37,181 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-20 05:48:37,181 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-20 05:48:37,181 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-20 05:48:37,182 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-20 05:48:37,182 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-20 05:48:37,182 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-20 05:48:37,182 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-20 05:48:37,182 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-20 05:48:37,183 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-20 05:48:37,183 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-20 05:48:37,183 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-20 05:48:37,183 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-20 05:48:37,183 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-20 05:48:37,184 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-20 05:48:37,184 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-20 05:48:37,184 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-20 05:48:37,184 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-20 05:48:37,184 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-20 05:48:37,185 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-20 05:48:37,185 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-20 05:48:37,185 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-20 05:48:37,185 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-20 05:48:37,185 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-20 05:48:37,186 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-20 05:48:37,186 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-20 05:48:37,186 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-20 05:48:37,186 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-20 05:48:37,186 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-20 05:48:37,187 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-20 05:48:37,187 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-20 05:48:37,187 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-20 05:48:37,187 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-20 05:48:37,187 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-20 05:48:37,188 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-20 05:48:37,188 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-20 05:48:37,188 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-20 05:48:37,188 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-20 05:48:37,188 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-20 05:48:37,189 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-20 05:48:37,189 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-20 05:48:37,189 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-20 05:48:37,189 INFO L130 BoogieDeclarations]: Found specification of procedure test_fun [2020-10-20 05:48:37,189 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-20 05:48:37,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-10-20 05:48:37,190 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-20 05:48:37,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 05:48:37,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 05:48:37,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-20 05:48:37,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 05:48:37,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2020-10-20 05:48:37,816 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 05:48:37,816 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-20 05:48:37,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:48:37 BoogieIcfgContainer [2020-10-20 05:48:37,819 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 05:48:37,821 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 05:48:37,821 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 05:48:37,825 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 05:48:37,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 05:48:36" (1/3) ... [2020-10-20 05:48:37,826 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ac93d53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 05:48:37, skipping insertion in model container [2020-10-20 05:48:37,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:48:37" (2/3) ... [2020-10-20 05:48:37,827 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ac93d53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 05:48:37, skipping insertion in model container [2020-10-20 05:48:37,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:48:37" (3/3) ... [2020-10-20 05:48:37,829 INFO L111 eAbstractionObserver]: Analyzing ICFG array01-alloca-2.i [2020-10-20 05:48:37,842 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 05:48:37,851 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 9 error locations. [2020-10-20 05:48:37,868 INFO L253 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2020-10-20 05:48:37,891 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 05:48:37,892 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-20 05:48:37,892 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 05:48:37,892 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 05:48:37,892 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 05:48:37,893 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 05:48:37,893 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 05:48:37,893 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 05:48:37,909 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2020-10-20 05:48:37,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 05:48:37,919 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:48:37,920 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:48:37,921 INFO L429 AbstractCegarLoop]: === Iteration 1 === [test_funErr4REQUIRES_VIOLATION, test_funErr2REQUIRES_VIOLATION, test_funErr3REQUIRES_VIOLATION, test_funErr1REQUIRES_VIOLATION, test_funErr5REQUIRES_VIOLATION, test_funErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:48:37,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:48:37,927 INFO L82 PathProgramCache]: Analyzing trace with hash -1920451558, now seen corresponding path program 1 times [2020-10-20 05:48:37,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 05:48:37,941 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1197669869] [2020-10-20 05:48:37,942 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 05:48:38,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:48:38,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-20 05:48:38,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:48:38,198 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 05:48:38,214 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:48:38,226 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:48:38,226 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:48:38,227 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2020-10-20 05:48:38,244 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 05:48:38,244 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 05:48:38,399 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 05:48:38,400 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1197669869] [2020-10-20 05:48:38,401 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:48:38,401 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-10-20 05:48:38,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622086668] [2020-10-20 05:48:38,407 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 05:48:38,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 05:48:38,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 05:48:38,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-20 05:48:38,426 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 6 states. [2020-10-20 05:48:39,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:48:39,013 INFO L93 Difference]: Finished difference Result 64 states and 71 transitions. [2020-10-20 05:48:39,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 05:48:39,015 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-10-20 05:48:39,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:48:39,030 INFO L225 Difference]: With dead ends: 64 [2020-10-20 05:48:39,031 INFO L226 Difference]: Without dead ends: 59 [2020-10-20 05:48:39,033 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-10-20 05:48:39,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-20 05:48:39,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 40. [2020-10-20 05:48:39,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-20 05:48:39,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 45 transitions. [2020-10-20 05:48:39,111 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 45 transitions. Word has length 10 [2020-10-20 05:48:39,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:48:39,112 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 45 transitions. [2020-10-20 05:48:39,112 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 05:48:39,112 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 45 transitions. [2020-10-20 05:48:39,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 05:48:39,114 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:48:39,114 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:48:39,326 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-20 05:48:39,326 INFO L429 AbstractCegarLoop]: === Iteration 2 === [test_funErr4REQUIRES_VIOLATION, test_funErr2REQUIRES_VIOLATION, test_funErr3REQUIRES_VIOLATION, test_funErr1REQUIRES_VIOLATION, test_funErr5REQUIRES_VIOLATION, test_funErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:48:39,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:48:39,327 INFO L82 PathProgramCache]: Analyzing trace with hash -1920451559, now seen corresponding path program 1 times [2020-10-20 05:48:39,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 05:48:39,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [346929794] [2020-10-20 05:48:39,329 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 05:48:39,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:48:39,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-20 05:48:39,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:48:39,451 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 05:48:39,452 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:48:39,454 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:48:39,455 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:48:39,455 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-20 05:48:39,459 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 05:48:39,459 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 05:48:39,479 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 05:48:39,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [346929794] [2020-10-20 05:48:39,480 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:48:39,480 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-20 05:48:39,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61041886] [2020-10-20 05:48:39,483 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 05:48:39,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 05:48:39,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 05:48:39,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 05:48:39,484 INFO L87 Difference]: Start difference. First operand 40 states and 45 transitions. Second operand 3 states. [2020-10-20 05:48:39,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:48:39,584 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2020-10-20 05:48:39,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 05:48:39,585 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-20 05:48:39,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:48:39,586 INFO L225 Difference]: With dead ends: 39 [2020-10-20 05:48:39,586 INFO L226 Difference]: Without dead ends: 39 [2020-10-20 05:48:39,587 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 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 05:48:39,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-20 05:48:39,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-10-20 05:48:39,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-20 05:48:39,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-10-20 05:48:39,599 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 10 [2020-10-20 05:48:39,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:48:39,600 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-10-20 05:48:39,600 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 05:48:39,600 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-10-20 05:48:39,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-20 05:48:39,602 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:48:39,602 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:48:39,804 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-20 05:48:39,805 INFO L429 AbstractCegarLoop]: === Iteration 3 === [test_funErr4REQUIRES_VIOLATION, test_funErr2REQUIRES_VIOLATION, test_funErr3REQUIRES_VIOLATION, test_funErr1REQUIRES_VIOLATION, test_funErr5REQUIRES_VIOLATION, test_funErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:48:39,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:48:39,805 INFO L82 PathProgramCache]: Analyzing trace with hash -1433090221, now seen corresponding path program 1 times [2020-10-20 05:48:39,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 05:48:39,807 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1891183253] [2020-10-20 05:48:39,807 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 05:48:39,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:48:39,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-20 05:48:39,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:48:39,946 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 05:48:39,946 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:48:39,951 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:48:39,952 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:48:39,952 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-20 05:48:39,978 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 05:48:39,978 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 05:48:39,998 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 05:48:39,999 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1891183253] [2020-10-20 05:48:40,001 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:48:40,001 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2020-10-20 05:48:40,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467568394] [2020-10-20 05:48:40,002 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 05:48:40,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 05:48:40,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 05:48:40,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 05:48:40,003 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 5 states. [2020-10-20 05:48:40,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:48:40,168 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2020-10-20 05:48:40,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 05:48:40,170 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-20 05:48:40,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:48:40,172 INFO L225 Difference]: With dead ends: 36 [2020-10-20 05:48:40,172 INFO L226 Difference]: Without dead ends: 36 [2020-10-20 05:48:40,173 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-20 05:48:40,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-20 05:48:40,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-10-20 05:48:40,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-20 05:48:40,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2020-10-20 05:48:40,178 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 13 [2020-10-20 05:48:40,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:48:40,178 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2020-10-20 05:48:40,178 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 05:48:40,179 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2020-10-20 05:48:40,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-20 05:48:40,179 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:48:40,179 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:48:40,382 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-20 05:48:40,385 INFO L429 AbstractCegarLoop]: === Iteration 4 === [test_funErr4REQUIRES_VIOLATION, test_funErr2REQUIRES_VIOLATION, test_funErr3REQUIRES_VIOLATION, test_funErr1REQUIRES_VIOLATION, test_funErr5REQUIRES_VIOLATION, test_funErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:48:40,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:48:40,386 INFO L82 PathProgramCache]: Analyzing trace with hash -1433090220, now seen corresponding path program 1 times [2020-10-20 05:48:40,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 05:48:40,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1102522041] [2020-10-20 05:48:40,391 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 05:48:40,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:48:40,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-20 05:48:40,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:48:40,525 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 8 treesize of output 7 [2020-10-20 05:48:40,525 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:48:40,554 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:48:40,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1102522041] [2020-10-20 05:48:40,557 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-20 05:48:40,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [765710009] [2020-10-20 05:48:40,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-20 05:48:40,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:48:40,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 05:48:40,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:48:40,761 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 05:48:40,761 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 05:48:40,789 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 05:48:40,789 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:48:40,789 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-10-20 05:48:40,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811327165] [2020-10-20 05:48:40,790 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 05:48:40,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 05:48:40,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 05:48:40,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-20 05:48:40,791 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 6 states. [2020-10-20 05:48:40,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:48:40,891 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2020-10-20 05:48:40,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 05:48:40,892 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-10-20 05:48:40,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:48:40,893 INFO L225 Difference]: With dead ends: 38 [2020-10-20 05:48:40,893 INFO L226 Difference]: Without dead ends: 38 [2020-10-20 05:48:40,894 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-10-20 05:48:40,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-20 05:48:40,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 34. [2020-10-20 05:48:40,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-20 05:48:40,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2020-10-20 05:48:40,898 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 13 [2020-10-20 05:48:40,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:48:40,898 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2020-10-20 05:48:40,898 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 05:48:40,899 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2020-10-20 05:48:40,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-20 05:48:40,899 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:48:40,899 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:48:41,307 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3,6 cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-20 05:48:41,308 INFO L429 AbstractCegarLoop]: === Iteration 5 === [test_funErr4REQUIRES_VIOLATION, test_funErr2REQUIRES_VIOLATION, test_funErr3REQUIRES_VIOLATION, test_funErr1REQUIRES_VIOLATION, test_funErr5REQUIRES_VIOLATION, test_funErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:48:41,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:48:41,309 INFO L82 PathProgramCache]: Analyzing trace with hash -663520419, now seen corresponding path program 1 times [2020-10-20 05:48:41,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 05:48:41,310 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1827282956] [2020-10-20 05:48:41,310 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 05:48:41,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:48:41,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 05:48:41,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:48:41,490 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:48:41,490 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 05:48:41,535 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:48:41,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1827282956] [2020-10-20 05:48:41,536 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 05:48:41,536 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2020-10-20 05:48:41,536 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216381084] [2020-10-20 05:48:41,537 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-20 05:48:41,537 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 05:48:41,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-20 05:48:41,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-20 05:48:41,538 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand 8 states. [2020-10-20 05:48:41,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:48:41,619 INFO L93 Difference]: Finished difference Result 44 states and 47 transitions. [2020-10-20 05:48:41,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 05:48:41,621 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2020-10-20 05:48:41,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:48:41,622 INFO L225 Difference]: With dead ends: 44 [2020-10-20 05:48:41,622 INFO L226 Difference]: Without dead ends: 44 [2020-10-20 05:48:41,622 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-20 05:48:41,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-20 05:48:41,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2020-10-20 05:48:41,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-20 05:48:41,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2020-10-20 05:48:41,627 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 14 [2020-10-20 05:48:41,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:48:41,628 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2020-10-20 05:48:41,628 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-20 05:48:41,628 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2020-10-20 05:48:41,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-20 05:48:41,629 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:48:41,629 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:48:41,829 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-10-20 05:48:41,830 INFO L429 AbstractCegarLoop]: === Iteration 6 === [test_funErr4REQUIRES_VIOLATION, test_funErr2REQUIRES_VIOLATION, test_funErr3REQUIRES_VIOLATION, test_funErr1REQUIRES_VIOLATION, test_funErr5REQUIRES_VIOLATION, test_funErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:48:41,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:48:41,831 INFO L82 PathProgramCache]: Analyzing trace with hash -1472867045, now seen corresponding path program 1 times [2020-10-20 05:48:41,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 05:48:41,832 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1848086899] [2020-10-20 05:48:41,832 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 05:48:41,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:48:41,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-20 05:48:41,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:48:41,968 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 8 treesize of output 7 [2020-10-20 05:48:41,968 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:48:41,984 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:48:41,984 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:48:41,985 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:22 [2020-10-20 05:48:42,086 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 05:48:42,086 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 05:48:42,468 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 05:48:42,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1848086899] [2020-10-20 05:48:42,469 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 05:48:42,469 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-20 05:48:42,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979666467] [2020-10-20 05:48:42,470 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-20 05:48:42,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 05:48:42,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-20 05:48:42,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-20 05:48:42,471 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand 10 states. [2020-10-20 05:48:42,875 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2020-10-20 05:48:43,090 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-10-20 05:48:43,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:48:43,591 INFO L93 Difference]: Finished difference Result 60 states and 66 transitions. [2020-10-20 05:48:43,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-20 05:48:43,592 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-20 05:48:43,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:48:43,593 INFO L225 Difference]: With dead ends: 60 [2020-10-20 05:48:43,593 INFO L226 Difference]: Without dead ends: 60 [2020-10-20 05:48:43,594 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=78, Invalid=132, Unknown=0, NotChecked=0, Total=210 [2020-10-20 05:48:43,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-20 05:48:43,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 52. [2020-10-20 05:48:43,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-20 05:48:43,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 58 transitions. [2020-10-20 05:48:43,600 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 58 transitions. Word has length 14 [2020-10-20 05:48:43,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:48:43,600 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 58 transitions. [2020-10-20 05:48:43,600 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-20 05:48:43,601 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 58 transitions. [2020-10-20 05:48:43,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-20 05:48:43,601 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:48:43,601 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 05:48:43,803 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-10-20 05:48:43,804 INFO L429 AbstractCegarLoop]: === Iteration 7 === [test_funErr4REQUIRES_VIOLATION, test_funErr2REQUIRES_VIOLATION, test_funErr3REQUIRES_VIOLATION, test_funErr1REQUIRES_VIOLATION, test_funErr5REQUIRES_VIOLATION, test_funErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:48:43,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:48:43,805 INFO L82 PathProgramCache]: Analyzing trace with hash -1497422161, now seen corresponding path program 1 times [2020-10-20 05:48:43,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 05:48:43,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1128170189] [2020-10-20 05:48:43,806 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 05:48:43,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:48:43,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-20 05:48:43,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:48:43,918 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 05:48:43,919 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:48:43,924 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:48:43,925 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:48:43,925 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-10-20 05:48:43,964 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-20 05:48:43,964 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 05:48:44,194 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-20 05:48:44,194 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1128170189] [2020-10-20 05:48:44,195 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:48:44,195 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2020-10-20 05:48:44,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376478413] [2020-10-20 05:48:44,196 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-20 05:48:44,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 05:48:44,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-20 05:48:44,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-20 05:48:44,196 INFO L87 Difference]: Start difference. First operand 52 states and 58 transitions. Second operand 10 states. [2020-10-20 05:48:45,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:48:45,025 INFO L93 Difference]: Finished difference Result 84 states and 94 transitions. [2020-10-20 05:48:45,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-20 05:48:45,026 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2020-10-20 05:48:45,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:48:45,029 INFO L225 Difference]: With dead ends: 84 [2020-10-20 05:48:45,029 INFO L226 Difference]: Without dead ends: 84 [2020-10-20 05:48:45,030 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2020-10-20 05:48:45,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-20 05:48:45,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 52. [2020-10-20 05:48:45,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-20 05:48:45,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 59 transitions. [2020-10-20 05:48:45,037 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 59 transitions. Word has length 17 [2020-10-20 05:48:45,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:48:45,037 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 59 transitions. [2020-10-20 05:48:45,037 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-20 05:48:45,037 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 59 transitions. [2020-10-20 05:48:45,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-20 05:48:45,038 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:48:45,038 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 05:48:45,250 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-10-20 05:48:45,250 INFO L429 AbstractCegarLoop]: === Iteration 8 === [test_funErr4REQUIRES_VIOLATION, test_funErr2REQUIRES_VIOLATION, test_funErr3REQUIRES_VIOLATION, test_funErr1REQUIRES_VIOLATION, test_funErr5REQUIRES_VIOLATION, test_funErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:48:45,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:48:45,251 INFO L82 PathProgramCache]: Analyzing trace with hash 1313569229, now seen corresponding path program 1 times [2020-10-20 05:48:45,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 05:48:45,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2127958012] [2020-10-20 05:48:45,252 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 05:48:45,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:48:45,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-20 05:48:45,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:48:45,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2127958012] [2020-10-20 05:48:45,355 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-20 05:48:45,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1143411039] [2020-10-20 05:48:45,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 11 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-20 05:48:45,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:48:45,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-20 05:48:45,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:48:45,551 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-20 05:48:45,551 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851254454] [2020-10-20 05:48:45,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 05:48:45,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:48:45,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-20 05:48:45,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:48:45,665 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-20 05:48:45,665 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 05:48:45,742 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-20 05:48:45,743 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:48:45,743 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2020-10-20 05:48:45,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338669394] [2020-10-20 05:48:45,744 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-20 05:48:45,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 05:48:45,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-20 05:48:45,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-20 05:48:45,744 INFO L87 Difference]: Start difference. First operand 52 states and 59 transitions. Second operand 7 states. [2020-10-20 05:48:45,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:48:45,890 INFO L93 Difference]: Finished difference Result 66 states and 73 transitions. [2020-10-20 05:48:45,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 05:48:45,892 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-10-20 05:48:45,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:48:45,893 INFO L225 Difference]: With dead ends: 66 [2020-10-20 05:48:45,893 INFO L226 Difference]: Without dead ends: 63 [2020-10-20 05:48:45,893 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-20 05:48:45,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-20 05:48:45,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 52. [2020-10-20 05:48:45,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-20 05:48:45,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 58 transitions. [2020-10-20 05:48:45,899 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 58 transitions. Word has length 21 [2020-10-20 05:48:45,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:48:45,899 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 58 transitions. [2020-10-20 05:48:45,899 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-20 05:48:45,899 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 58 transitions. [2020-10-20 05:48:45,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-20 05:48:45,900 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:48:45,901 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 05:48:46,502 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,10 mathsat -unsat_core_generation=3,11 cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-20 05:48:46,503 INFO L429 AbstractCegarLoop]: === Iteration 9 === [test_funErr4REQUIRES_VIOLATION, test_funErr2REQUIRES_VIOLATION, test_funErr3REQUIRES_VIOLATION, test_funErr1REQUIRES_VIOLATION, test_funErr5REQUIRES_VIOLATION, test_funErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:48:46,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:48:46,503 INFO L82 PathProgramCache]: Analyzing trace with hash 1349011394, now seen corresponding path program 1 times [2020-10-20 05:48:46,504 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 05:48:46,505 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [377830259] [2020-10-20 05:48:46,505 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 05:48:46,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:48:46,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-20 05:48:46,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:48:46,633 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-20 05:48:46,633 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 05:48:46,701 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-20 05:48:46,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [377830259] [2020-10-20 05:48:46,701 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 05:48:46,702 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2020-10-20 05:48:46,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337634351] [2020-10-20 05:48:46,702 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-20 05:48:46,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 05:48:46,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-20 05:48:46,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-20 05:48:46,703 INFO L87 Difference]: Start difference. First operand 52 states and 58 transitions. Second operand 10 states. [2020-10-20 05:48:46,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:48:46,838 INFO L93 Difference]: Finished difference Result 69 states and 75 transitions. [2020-10-20 05:48:46,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 05:48:46,839 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 21 [2020-10-20 05:48:46,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:48:46,840 INFO L225 Difference]: With dead ends: 69 [2020-10-20 05:48:46,840 INFO L226 Difference]: Without dead ends: 69 [2020-10-20 05:48:46,840 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-10-20 05:48:46,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-20 05:48:46,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 66. [2020-10-20 05:48:46,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-20 05:48:46,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 73 transitions. [2020-10-20 05:48:46,851 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 73 transitions. Word has length 21 [2020-10-20 05:48:46,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:48:46,851 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 73 transitions. [2020-10-20 05:48:46,852 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-20 05:48:46,852 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 73 transitions. [2020-10-20 05:48:46,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-20 05:48:46,856 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:48:46,856 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 05:48:47,056 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 mathsat -unsat_core_generation=3 [2020-10-20 05:48:47,057 INFO L429 AbstractCegarLoop]: === Iteration 10 === [test_funErr4REQUIRES_VIOLATION, test_funErr2REQUIRES_VIOLATION, test_funErr3REQUIRES_VIOLATION, test_funErr1REQUIRES_VIOLATION, test_funErr5REQUIRES_VIOLATION, test_funErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:48:47,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:48:47,057 INFO L82 PathProgramCache]: Analyzing trace with hash 69147716, now seen corresponding path program 1 times [2020-10-20 05:48:47,058 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 05:48:47,058 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [424897089] [2020-10-20 05:48:47,058 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 05:48:47,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:48:47,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 16 conjunts are in the unsatisfiable core [2020-10-20 05:48:47,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:48:47,187 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 8 treesize of output 7 [2020-10-20 05:48:47,188 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:48:47,203 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:48:47,204 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:48:47,204 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:20, output treesize:19 [2020-10-20 05:48:47,399 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-20 05:48:47,400 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 05:48:48,056 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-20 05:48:48,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [424897089] [2020-10-20 05:48:48,057 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 05:48:48,057 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-20 05:48:48,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511843988] [2020-10-20 05:48:48,058 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-20 05:48:48,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 05:48:48,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-20 05:48:48,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2020-10-20 05:48:48,058 INFO L87 Difference]: Start difference. First operand 66 states and 73 transitions. Second operand 14 states. [2020-10-20 05:48:48,994 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2020-10-20 05:48:49,232 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2020-10-20 05:48:49,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:48:49,716 INFO L93 Difference]: Finished difference Result 99 states and 112 transitions. [2020-10-20 05:48:49,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-20 05:48:49,718 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 21 [2020-10-20 05:48:49,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:48:49,719 INFO L225 Difference]: With dead ends: 99 [2020-10-20 05:48:49,719 INFO L226 Difference]: Without dead ends: 99 [2020-10-20 05:48:49,720 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=108, Invalid=354, Unknown=0, NotChecked=0, Total=462 [2020-10-20 05:48:49,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-20 05:48:49,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 90. [2020-10-20 05:48:49,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-20 05:48:49,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 103 transitions. [2020-10-20 05:48:49,735 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 103 transitions. Word has length 21 [2020-10-20 05:48:49,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:48:49,735 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 103 transitions. [2020-10-20 05:48:49,735 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-20 05:48:49,736 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 103 transitions. [2020-10-20 05:48:49,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-20 05:48:49,737 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:48:49,737 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, 1, 1, 1, 1] [2020-10-20 05:48:49,938 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 mathsat -unsat_core_generation=3 [2020-10-20 05:48:49,939 INFO L429 AbstractCegarLoop]: === Iteration 11 === [test_funErr4REQUIRES_VIOLATION, test_funErr2REQUIRES_VIOLATION, test_funErr3REQUIRES_VIOLATION, test_funErr1REQUIRES_VIOLATION, test_funErr5REQUIRES_VIOLATION, test_funErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:48:49,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:48:49,940 INFO L82 PathProgramCache]: Analyzing trace with hash -846735008, now seen corresponding path program 1 times [2020-10-20 05:48:49,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 05:48:49,942 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [685582265] [2020-10-20 05:48:49,942 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 05:48:50,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:48:50,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-20 05:48:50,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:48:50,042 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 05:48:50,042 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:48:50,044 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:48:50,044 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:48:50,044 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-20 05:48:50,093 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:48:50,094 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 05:48:50,095 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:48:50,111 INFO L625 ElimStorePlain]: treesize reduction 10, result has 60.0 percent of original size [2020-10-20 05:48:50,113 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 05:48:50,117 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-20 05:48:50,117 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:17, output treesize:15 [2020-10-20 05:48:50,118 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 05:48:50,133 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 05:48:50,146 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 05:48:50,158 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 05:48:50,172 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 05:48:50,188 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 05:48:50,201 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 05:48:50,218 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 05:48:50,231 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 05:48:50,250 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 05:48:50,273 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-20 05:48:50,274 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 05:48:52,484 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-20 05:48:52,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [685582265] [2020-10-20 05:48:52,485 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:48:52,485 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 8 [2020-10-20 05:48:52,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656835178] [2020-10-20 05:48:52,486 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-20 05:48:52,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 05:48:52,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-20 05:48:52,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=50, Unknown=1, NotChecked=0, Total=72 [2020-10-20 05:48:52,493 INFO L87 Difference]: Start difference. First operand 90 states and 103 transitions. Second operand 9 states. [2020-10-20 05:48:52,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:48:52,670 INFO L93 Difference]: Finished difference Result 89 states and 102 transitions. [2020-10-20 05:48:52,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 05:48:52,671 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-20 05:48:52,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:48:52,672 INFO L225 Difference]: With dead ends: 89 [2020-10-20 05:48:52,672 INFO L226 Difference]: Without dead ends: 64 [2020-10-20 05:48:52,672 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 33 SyntacticMatches, 10 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=34, Invalid=75, Unknown=1, NotChecked=0, Total=110 [2020-10-20 05:48:52,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-20 05:48:52,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2020-10-20 05:48:52,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-20 05:48:52,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 72 transitions. [2020-10-20 05:48:52,677 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 72 transitions. Word has length 25 [2020-10-20 05:48:52,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:48:52,677 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 72 transitions. [2020-10-20 05:48:52,677 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-20 05:48:52,677 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 72 transitions. [2020-10-20 05:48:52,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-20 05:48:52,678 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:48:52,678 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:48:52,886 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 mathsat -unsat_core_generation=3 [2020-10-20 05:48:52,887 INFO L429 AbstractCegarLoop]: === Iteration 12 === [test_funErr4REQUIRES_VIOLATION, test_funErr2REQUIRES_VIOLATION, test_funErr3REQUIRES_VIOLATION, test_funErr1REQUIRES_VIOLATION, test_funErr5REQUIRES_VIOLATION, test_funErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:48:52,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:48:52,887 INFO L82 PathProgramCache]: Analyzing trace with hash -1022374684, now seen corresponding path program 2 times [2020-10-20 05:48:52,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 05:48:52,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2125337275] [2020-10-20 05:48:52,889 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 05:48:52,995 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-20 05:48:52,995 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 05:48:52,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-20 05:48:53,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:48:53,032 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 8 treesize of output 7 [2020-10-20 05:48:53,032 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:48:53,056 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:48:53,057 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:48:53,057 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:22 [2020-10-20 05:48:53,389 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:48:53,389 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 05:48:54,356 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:48:54,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2125337275] [2020-10-20 05:48:54,356 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 05:48:54,356 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-20 05:48:54,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100275182] [2020-10-20 05:48:54,357 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-20 05:48:54,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 05:48:54,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-20 05:48:54,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2020-10-20 05:48:54,358 INFO L87 Difference]: Start difference. First operand 64 states and 72 transitions. Second operand 18 states. [2020-10-20 05:48:56,140 WARN L193 SmtUtils]: Spent 643.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-20 05:48:56,787 WARN L193 SmtUtils]: Spent 520.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2020-10-20 05:48:58,165 WARN L193 SmtUtils]: Spent 389.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2020-10-20 05:48:58,680 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2020-10-20 05:48:59,148 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2020-10-20 05:48:59,514 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2020-10-20 05:48:59,867 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2020-10-20 05:49:00,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:49:00,550 INFO L93 Difference]: Finished difference Result 96 states and 110 transitions. [2020-10-20 05:49:00,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-20 05:49:00,551 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 26 [2020-10-20 05:49:00,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:49:00,552 INFO L225 Difference]: With dead ends: 96 [2020-10-20 05:49:00,552 INFO L226 Difference]: Without dead ends: 96 [2020-10-20 05:49:00,553 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=311, Invalid=619, Unknown=0, NotChecked=0, Total=930 [2020-10-20 05:49:00,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-20 05:49:00,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 88. [2020-10-20 05:49:00,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-20 05:49:00,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 102 transitions. [2020-10-20 05:49:00,558 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 102 transitions. Word has length 26 [2020-10-20 05:49:00,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:49:00,558 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 102 transitions. [2020-10-20 05:49:00,558 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-20 05:49:00,559 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 102 transitions. [2020-10-20 05:49:00,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-20 05:49:00,560 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:49:00,560 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:49:00,771 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 mathsat -unsat_core_generation=3 [2020-10-20 05:49:00,772 INFO L429 AbstractCegarLoop]: === Iteration 13 === [test_funErr4REQUIRES_VIOLATION, test_funErr2REQUIRES_VIOLATION, test_funErr3REQUIRES_VIOLATION, test_funErr1REQUIRES_VIOLATION, test_funErr5REQUIRES_VIOLATION, test_funErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:49:00,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:49:00,773 INFO L82 PathProgramCache]: Analyzing trace with hash 302793597, now seen corresponding path program 2 times [2020-10-20 05:49:00,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 05:49:00,773 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [787617140] [2020-10-20 05:49:00,774 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 05:49:00,876 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-20 05:49:00,876 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 05:49:00,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-20 05:49:00,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:49:00,906 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 8 treesize of output 7 [2020-10-20 05:49:00,907 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:49:00,924 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:49:00,924 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:49:00,925 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:22 [2020-10-20 05:49:01,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [787617140] [2020-10-20 05:49:01,013 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-20 05:49:01,013 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [108907643] [2020-10-20 05:49:01,013 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 05:49:01,279 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-20 05:49:01,279 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 05:49:01,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-20 05:49:01,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:49:01,516 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-20 05:49:01,516 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 05:49:01,714 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-20 05:49:01,715 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 05:49:01,715 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 15 [2020-10-20 05:49:01,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613000989] [2020-10-20 05:49:01,715 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-20 05:49:01,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 05:49:01,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-20 05:49:01,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2020-10-20 05:49:01,716 INFO L87 Difference]: Start difference. First operand 88 states and 102 transitions. Second operand 15 states. [2020-10-20 05:49:02,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:49:02,166 INFO L93 Difference]: Finished difference Result 99 states and 113 transitions. [2020-10-20 05:49:02,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-20 05:49:02,167 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 33 [2020-10-20 05:49:02,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:49:02,168 INFO L225 Difference]: With dead ends: 99 [2020-10-20 05:49:02,168 INFO L226 Difference]: Without dead ends: 88 [2020-10-20 05:49:02,169 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2020-10-20 05:49:02,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-20 05:49:02,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2020-10-20 05:49:02,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-20 05:49:02,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 101 transitions. [2020-10-20 05:49:02,174 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 101 transitions. Word has length 33 [2020-10-20 05:49:02,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:49:02,174 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 101 transitions. [2020-10-20 05:49:02,174 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-20 05:49:02,174 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 101 transitions. [2020-10-20 05:49:02,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-20 05:49:02,176 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:49:02,180 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:49:02,586 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 mathsat -unsat_core_generation=3,18 cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-20 05:49:02,586 INFO L429 AbstractCegarLoop]: === Iteration 14 === [test_funErr4REQUIRES_VIOLATION, test_funErr2REQUIRES_VIOLATION, test_funErr3REQUIRES_VIOLATION, test_funErr1REQUIRES_VIOLATION, test_funErr5REQUIRES_VIOLATION, test_funErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:49:02,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:49:02,587 INFO L82 PathProgramCache]: Analyzing trace with hash -1132333094, now seen corresponding path program 3 times [2020-10-20 05:49:02,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 05:49:02,589 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1329423862] [2020-10-20 05:49:02,589 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 19 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with mathsat -unsat_core_generation=3 [2020-10-20 05:49:02,759 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2020-10-20 05:49:02,759 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 05:49:02,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 23 conjunts are in the unsatisfiable core [2020-10-20 05:49:02,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:49:02,788 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 8 treesize of output 7 [2020-10-20 05:49:02,788 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:49:02,803 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:49:02,804 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:49:02,804 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:22 [2020-10-20 05:49:03,235 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 4 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:49:03,235 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 05:49:05,356 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:49:05,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1329423862] [2020-10-20 05:49:05,357 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 05:49:05,357 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 24 [2020-10-20 05:49:05,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959313691] [2020-10-20 05:49:05,359 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-20 05:49:05,359 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 05:49:05,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-20 05:49:05,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=456, Unknown=0, NotChecked=0, Total=552 [2020-10-20 05:49:05,360 INFO L87 Difference]: Start difference. First operand 88 states and 101 transitions. Second operand 24 states. [2020-10-20 05:49:06,978 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2020-10-20 05:49:07,665 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2020-10-20 05:49:08,180 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2020-10-20 05:49:08,731 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2020-10-20 05:49:09,221 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2020-10-20 05:49:09,826 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2020-10-20 05:49:10,278 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2020-10-20 05:49:10,846 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2020-10-20 05:49:11,258 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2020-10-20 05:49:11,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:49:11,823 INFO L93 Difference]: Finished difference Result 120 states and 135 transitions. [2020-10-20 05:49:11,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-20 05:49:11,825 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 37 [2020-10-20 05:49:11,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:49:11,826 INFO L225 Difference]: With dead ends: 120 [2020-10-20 05:49:11,826 INFO L226 Difference]: Without dead ends: 101 [2020-10-20 05:49:11,827 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 49 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=252, Invalid=1308, Unknown=0, NotChecked=0, Total=1560 [2020-10-20 05:49:11,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-10-20 05:49:11,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 96. [2020-10-20 05:49:11,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-20 05:49:11,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 109 transitions. [2020-10-20 05:49:11,831 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 109 transitions. Word has length 37 [2020-10-20 05:49:11,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:49:11,831 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 109 transitions. [2020-10-20 05:49:11,831 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-20 05:49:11,832 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 109 transitions. [2020-10-20 05:49:11,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-20 05:49:11,833 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:49:11,833 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:49:12,037 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 mathsat -unsat_core_generation=3 [2020-10-20 05:49:12,038 INFO L429 AbstractCegarLoop]: === Iteration 15 === [test_funErr4REQUIRES_VIOLATION, test_funErr2REQUIRES_VIOLATION, test_funErr3REQUIRES_VIOLATION, test_funErr1REQUIRES_VIOLATION, test_funErr5REQUIRES_VIOLATION, test_funErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:49:12,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:49:12,038 INFO L82 PathProgramCache]: Analyzing trace with hash -1726573878, now seen corresponding path program 4 times [2020-10-20 05:49:12,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 05:49:12,040 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1694523742] [2020-10-20 05:49:12,041 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 20 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with mathsat -unsat_core_generation=3 [2020-10-20 05:49:12,156 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-20 05:49:12,156 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 05:49:12,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 23 conjunts are in the unsatisfiable core [2020-10-20 05:49:12,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:49:12,185 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 8 treesize of output 7 [2020-10-20 05:49:12,185 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:49:12,201 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:49:12,202 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:49:12,202 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:22 [2020-10-20 05:49:12,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1694523742] [2020-10-20 05:49:12,357 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-20 05:49:12,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2016830265] [2020-10-20 05:49:12,357 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 21 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-20 05:49:12,654 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-20 05:49:12,654 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 05:49:12,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-20 05:49:12,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:49:13,039 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 29 proven. 30 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-20 05:49:13,040 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 05:49:13,563 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 29 proven. 30 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-20 05:49:13,564 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 05:49:13,564 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 23 [2020-10-20 05:49:13,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684382231] [2020-10-20 05:49:13,565 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-20 05:49:13,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 05:49:13,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-20 05:49:13,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=650, Unknown=0, NotChecked=0, Total=756 [2020-10-20 05:49:13,565 INFO L87 Difference]: Start difference. First operand 96 states and 109 transitions. Second operand 23 states. [2020-10-20 05:49:14,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:49:14,537 INFO L93 Difference]: Finished difference Result 123 states and 138 transitions. [2020-10-20 05:49:14,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-20 05:49:14,538 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 45 [2020-10-20 05:49:14,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:49:14,539 INFO L225 Difference]: With dead ends: 123 [2020-10-20 05:49:14,539 INFO L226 Difference]: Without dead ends: 96 [2020-10-20 05:49:14,540 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=160, Invalid=962, Unknown=0, NotChecked=0, Total=1122 [2020-10-20 05:49:14,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-20 05:49:14,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2020-10-20 05:49:14,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-20 05:49:14,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 108 transitions. [2020-10-20 05:49:14,543 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 108 transitions. Word has length 45 [2020-10-20 05:49:14,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:49:14,543 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 108 transitions. [2020-10-20 05:49:14,543 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-20 05:49:14,543 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 108 transitions. [2020-10-20 05:49:14,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-20 05:49:14,547 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:49:14,548 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:49:14,958 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 mathsat -unsat_core_generation=3,21 cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-20 05:49:14,959 INFO L429 AbstractCegarLoop]: === Iteration 16 === [test_funErr4REQUIRES_VIOLATION, test_funErr2REQUIRES_VIOLATION, test_funErr3REQUIRES_VIOLATION, test_funErr1REQUIRES_VIOLATION, test_funErr5REQUIRES_VIOLATION, test_funErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:49:14,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:49:14,960 INFO L82 PathProgramCache]: Analyzing trace with hash 37200807, now seen corresponding path program 5 times [2020-10-20 05:49:14,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 05:49:14,961 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [574484692] [2020-10-20 05:49:14,961 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 22 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with mathsat -unsat_core_generation=3 [2020-10-20 05:49:15,132 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2020-10-20 05:49:15,132 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 05:49:15,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 26 conjunts are in the unsatisfiable core [2020-10-20 05:49:15,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:49:15,156 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 8 treesize of output 7 [2020-10-20 05:49:15,156 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:49:15,172 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:49:15,172 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:49:15,173 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:22 [2020-10-20 05:49:15,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [574484692] [2020-10-20 05:49:15,442 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-20 05:49:15,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1543869759] [2020-10-20 05:49:15,443 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 23 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-20 05:49:15,875 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2020-10-20 05:49:15,875 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 05:49:15,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 17 conjunts are in the unsatisfiable core [2020-10-20 05:49:15,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:49:16,268 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-20 05:49:16,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559620353] [2020-10-20 05:49:16,269 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 05:49:17,103 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2020-10-20 05:49:17,103 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 05:49:17,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 22 conjunts are in the unsatisfiable core [2020-10-20 05:49:17,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:49:17,119 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 8 treesize of output 7 [2020-10-20 05:49:17,119 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:49:17,143 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:49:17,144 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:49:17,144 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:22 [2020-10-20 05:49:17,188 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 17 treesize of output 13 [2020-10-20 05:49:17,189 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:49:17,206 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:49:17,206 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:49:17,206 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:21 [2020-10-20 05:49:17,485 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-20 05:49:17,485 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:49:17,485 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-10-20 05:49:17,486 ERROR L205 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2020-10-20 05:49:17,486 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 05:49:18,099 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 mathsat -unsat_core_generation=3,24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,23 cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-20 05:49:18,115 WARN L238 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-20 05:49:18,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 05:49:18 BoogieIcfgContainer [2020-10-20 05:49:18,116 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 05:49:18,117 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 05:49:18,117 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 05:49:18,117 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 05:49:18,118 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:48:37" (3/4) ... [2020-10-20 05:49:18,121 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 05:49:18,121 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 05:49:18,122 INFO L168 Benchmark]: Toolchain (without parser) took 41836.94 ms. Allocated memory was 34.6 MB in the beginning and 87.6 MB in the end (delta: 53.0 MB). Free memory was 14.7 MB in the beginning and 38.4 MB in the end (delta: -23.8 MB). Peak memory consumption was 29.2 MB. Max. memory is 14.3 GB. [2020-10-20 05:49:18,122 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 33.6 MB. Free memory was 10.4 MB in the beginning and 10.3 MB in the end (delta: 43.9 kB). Peak memory consumption was 43.9 kB. Max. memory is 14.3 GB. [2020-10-20 05:49:18,123 INFO L168 Benchmark]: CACSL2BoogieTranslator took 721.18 ms. Allocated memory was 34.6 MB in the beginning and 45.1 MB in the end (delta: 10.5 MB). Free memory was 13.8 MB in the beginning and 20.4 MB in the end (delta: -6.6 MB). Peak memory consumption was 13.4 MB. Max. memory is 14.3 GB. [2020-10-20 05:49:18,123 INFO L168 Benchmark]: Boogie Preprocessor took 66.39 ms. Allocated memory is still 45.1 MB. Free memory was 20.4 MB in the beginning and 17.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 14.3 GB. [2020-10-20 05:49:18,123 INFO L168 Benchmark]: RCFGBuilder took 740.27 ms. Allocated memory was 45.1 MB in the beginning and 47.2 MB in the end (delta: 2.1 MB). Free memory was 17.3 MB in the beginning and 23.1 MB in the end (delta: -5.8 MB). Peak memory consumption was 10.6 MB. Max. memory is 14.3 GB. [2020-10-20 05:49:18,123 INFO L168 Benchmark]: TraceAbstraction took 40295.55 ms. Allocated memory was 47.2 MB in the beginning and 87.6 MB in the end (delta: 40.4 MB). Free memory was 22.7 MB in the beginning and 38.4 MB in the end (delta: -15.7 MB). Peak memory consumption was 24.7 MB. Max. memory is 14.3 GB. [2020-10-20 05:49:18,124 INFO L168 Benchmark]: Witness Printer took 4.25 ms. Allocated memory is still 87.6 MB. Free memory is still 38.4 MB. There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 05:49:18,126 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 33.6 MB. Free memory was 10.4 MB in the beginning and 10.3 MB in the end (delta: 43.9 kB). Peak memory consumption was 43.9 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 721.18 ms. Allocated memory was 34.6 MB in the beginning and 45.1 MB in the end (delta: 10.5 MB). Free memory was 13.8 MB in the beginning and 20.4 MB in the end (delta: -6.6 MB). Peak memory consumption was 13.4 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 66.39 ms. Allocated memory is still 45.1 MB. Free memory was 20.4 MB in the beginning and 17.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 14.3 GB. * RCFGBuilder took 740.27 ms. Allocated memory was 45.1 MB in the beginning and 47.2 MB in the end (delta: 2.1 MB). Free memory was 17.3 MB in the beginning and 23.1 MB in the end (delta: -5.8 MB). Peak memory consumption was 10.6 MB. Max. memory is 14.3 GB. * TraceAbstraction took 40295.55 ms. Allocated memory was 47.2 MB in the beginning and 87.6 MB in the end (delta: 40.4 MB). Free memory was 22.7 MB in the beginning and 38.4 MB in the end (delta: -15.7 MB). Peak memory consumption was 24.7 MB. Max. memory is 14.3 GB. * Witness Printer took 4.25 ms. Allocated memory is still 87.6 MB. Free memory is still 38.4 MB. There was no memory consumed. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 517]: 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: [L525] int array_size = __VERIFIER_nondet_int(); [L526] COND FALSE !(array_size < 1 || array_size >= 2147483647 / sizeof(int)) [L529] int* numbers = (int*) __builtin_alloca (array_size * sizeof(int)); [L531] int k = 0; [L531] COND TRUE k < array_size [L533] numbers[k] = __VERIFIER_nondet_int() [L531] k++ [L531] COND TRUE k < array_size [L533] numbers[k] = __VERIFIER_nondet_int() [L531] k++ [L531] COND TRUE k < array_size [L533] numbers[k] = __VERIFIER_nondet_int() [L531] k++ [L531] COND TRUE k < array_size [L533] numbers[k] = __VERIFIER_nondet_int() [L531] k++ [L531] COND FALSE !(k < array_size) [L536] CALL test_fun(numbers, array_size) [L514] int i; [L515] int res = 0; [L516] i = 0 [L516] COND TRUE i < N [L517] EXPR a[i] [L517] COND FALSE !(a[i] > 0) [L516] i++ [L516] COND TRUE i < N [L517] EXPR a[i] [L517] COND FALSE !(a[i] > 0) [L516] i++ [L516] COND TRUE i < N [L517] EXPR a[i] [L517] COND FALSE !(a[i] > 0) [L516] i++ [L516] COND TRUE i < N [L517] EXPR a[i] [L517] COND FALSE !(a[i] > 0) [L516] i++ [L516] COND TRUE i < N [L517] EXPR a[i] [L517] COND FALSE !(a[i] > 0) [L516] i++ [L516] COND TRUE i < N [L517] a[i] - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 60 locations, 9 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 40.2s, OverallIterations: 16, TraceHistogramMax: 6, AutomataDifference: 19.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 395 SDtfs, 1087 SDslu, 1742 SDs, 0 SdLazy, 1858 SolverSat, 195 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 760 GetRequests, 535 SyntacticMatches, 12 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1001 ImplicationChecksByTransitivity, 21.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=96occurred 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, 103 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 10.3s InterpolantComputationTime, 320 NumberOfCodeBlocks, 320 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 610 ConstructedInterpolants, 15 QuantifiedInterpolants, 157007 SizeOfPredicates, 60 NumberOfNonLiveVariables, 967 ConjunctsInSsa, 139 ConjunctsInUnsatCore, 30 InterpolantComputations, 14 PerfectInterpolantSequences, 152/364 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...