./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/array-memsafety/stroeder1-alloca-1.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/stroeder1-alloca-1.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 1643f1caf494dad598b4df826effeedd3e612fb8 ............................................................................................................................ 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/stroeder1-alloca-1.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 1643f1caf494dad598b4df826effeedd3e612fb8 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 05:51:44,133 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 05:51:44,137 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 05:51:44,165 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 05:51:44,165 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 05:51:44,166 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 05:51:44,168 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 05:51:44,170 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 05:51:44,172 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 05:51:44,173 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 05:51:44,174 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 05:51:44,175 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 05:51:44,175 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 05:51:44,177 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 05:51:44,178 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 05:51:44,179 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 05:51:44,180 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 05:51:44,181 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 05:51:44,183 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 05:51:44,185 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 05:51:44,187 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 05:51:44,188 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 05:51:44,189 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 05:51:44,190 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 05:51:44,193 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 05:51:44,193 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 05:51:44,194 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 05:51:44,195 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 05:51:44,195 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 05:51:44,196 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 05:51:44,196 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 05:51:44,197 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 05:51:44,198 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 05:51:44,199 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 05:51:44,200 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 05:51:44,201 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 05:51:44,201 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 05:51:44,202 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 05:51:44,202 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 05:51:44,203 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 05:51:44,204 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 05:51:44,205 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-10-20 05:51:44,239 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 05:51:44,239 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 05:51:44,241 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 05:51:44,241 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 05:51:44,241 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 05:51:44,242 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 05:51:44,242 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 05:51:44,242 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 05:51:44,242 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 05:51:44,243 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 05:51:44,243 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 05:51:44,243 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-20 05:51:44,243 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-20 05:51:44,243 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-20 05:51:44,244 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 05:51:44,244 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-20 05:51:44,244 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 05:51:44,244 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 05:51:44,245 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 05:51:44,245 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 05:51:44,245 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 05:51:44,246 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 05:51:44,246 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 05:51:44,246 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 05:51:44,246 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 05:51:44,247 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 05:51:44,247 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 05:51:44,247 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 05:51:44,247 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 -> 1643f1caf494dad598b4df826effeedd3e612fb8 [2020-10-20 05:51:44,463 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 05:51:44,476 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 05:51:44,480 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 05:51:44,481 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 05:51:44,482 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 05:51:44,483 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/stroeder1-alloca-1.i [2020-10-20 05:51:44,569 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34a622243/9a66f837e86a4ce2b27542aee40f8142/FLAG4279b1383 [2020-10-20 05:51:45,133 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 05:51:45,134 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/stroeder1-alloca-1.i [2020-10-20 05:51:45,148 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34a622243/9a66f837e86a4ce2b27542aee40f8142/FLAG4279b1383 [2020-10-20 05:51:45,403 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34a622243/9a66f837e86a4ce2b27542aee40f8142 [2020-10-20 05:51:45,407 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 05:51:45,414 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-20 05:51:45,415 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 05:51:45,415 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 05:51:45,419 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 05:51:45,420 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:51:45" (1/1) ... [2020-10-20 05:51:45,426 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59f72a82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:51:45, skipping insertion in model container [2020-10-20 05:51:45,426 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:51:45" (1/1) ... [2020-10-20 05:51:45,435 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 05:51:45,503 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 05:51:45,978 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 05:51:45,995 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 05:51:45,997 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@60243c11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:51:45, skipping insertion in model container [2020-10-20 05:51:45,998 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 05:51:45,998 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2020-10-20 05:51:46,003 INFO L168 Benchmark]: Toolchain (without parser) took 591.46 ms. Allocated memory was 35.1 MB in the beginning and 45.1 MB in the end (delta: 10.0 MB). Free memory was 9.2 MB in the beginning and 27.0 MB in the end (delta: -17.7 MB). Peak memory consumption was 8.7 MB. Max. memory is 14.3 GB. [2020-10-20 05:51:46,004 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 35.1 MB. Free memory is still 15.2 MB. There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 05:51:46,007 INFO L168 Benchmark]: CACSL2BoogieTranslator took 583.02 ms. Allocated memory was 35.1 MB in the beginning and 45.1 MB in the end (delta: 10.0 MB). Free memory was 8.3 MB in the beginning and 27.0 MB in the end (delta: -18.6 MB). Peak memory consumption was 7.8 MB. Max. memory is 14.3 GB. [2020-10-20 05:51:46,011 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 35.1 MB. Free memory is still 15.2 MB. There was no memory consumed. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 583.02 ms. Allocated memory was 35.1 MB in the beginning and 45.1 MB in the end (delta: 10.0 MB). Free memory was 8.3 MB in the beginning and 27.0 MB in the end (delta: -18.6 MB). Peak memory consumption was 7.8 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 05:51:48,051 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 05:51:48,054 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 05:51:48,078 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 05:51:48,079 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 05:51:48,080 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 05:51:48,082 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 05:51:48,091 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 05:51:48,093 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 05:51:48,094 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 05:51:48,096 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 05:51:48,097 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 05:51:48,097 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 05:51:48,098 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 05:51:48,100 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 05:51:48,101 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 05:51:48,102 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 05:51:48,103 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 05:51:48,105 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 05:51:48,107 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 05:51:48,109 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 05:51:48,111 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 05:51:48,112 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 05:51:48,113 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 05:51:48,116 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 05:51:48,116 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 05:51:48,116 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 05:51:48,118 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 05:51:48,118 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 05:51:48,119 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 05:51:48,120 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 05:51:48,120 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 05:51:48,121 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 05:51:48,122 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 05:51:48,124 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 05:51:48,124 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 05:51:48,125 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 05:51:48,125 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 05:51:48,125 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 05:51:48,127 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 05:51:48,128 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 05:51:48,129 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2020-10-20 05:51:48,153 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 05:51:48,153 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 05:51:48,155 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 05:51:48,155 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 05:51:48,155 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 05:51:48,156 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 05:51:48,156 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 05:51:48,156 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 05:51:48,156 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 05:51:48,157 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 05:51:48,157 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 05:51:48,157 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-20 05:51:48,157 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-20 05:51:48,158 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-20 05:51:48,158 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 05:51:48,158 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-20 05:51:48,158 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-20 05:51:48,159 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-20 05:51:48,159 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 05:51:48,159 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 05:51:48,160 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 05:51:48,160 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 05:51:48,160 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 05:51:48,160 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 05:51:48,161 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 05:51:48,161 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 05:51:48,161 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 05:51:48,161 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-20 05:51:48,162 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-20 05:51:48,162 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 05:51:48,162 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-20 05:51:48,162 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 -> 1643f1caf494dad598b4df826effeedd3e612fb8 [2020-10-20 05:51:48,375 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 05:51:48,397 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 05:51:48,403 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 05:51:48,405 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 05:51:48,406 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 05:51:48,408 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/stroeder1-alloca-1.i [2020-10-20 05:51:48,474 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d2d3e693/c76c46d576a749b7b757c3b9da7fe662/FLAG860955c65 [2020-10-20 05:51:49,064 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 05:51:49,066 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/stroeder1-alloca-1.i [2020-10-20 05:51:49,085 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d2d3e693/c76c46d576a749b7b757c3b9da7fe662/FLAG860955c65 [2020-10-20 05:51:49,348 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d2d3e693/c76c46d576a749b7b757c3b9da7fe662 [2020-10-20 05:51:49,351 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 05:51:49,358 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-20 05:51:49,360 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 05:51:49,360 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 05:51:49,364 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 05:51:49,365 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:51:49" (1/1) ... [2020-10-20 05:51:49,369 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@293db2c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:51:49, skipping insertion in model container [2020-10-20 05:51:49,369 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:51:49" (1/1) ... [2020-10-20 05:51:49,377 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 05:51:49,421 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 05:51:49,840 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 05:51:49,860 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2020-10-20 05:51:49,869 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 05:51:49,909 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 05:51:49,916 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 05:51:49,968 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 05:51:50,040 INFO L208 MainTranslator]: Completed translation [2020-10-20 05:51:50,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:51:50 WrapperNode [2020-10-20 05:51:50,041 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 05:51:50,041 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 05:51:50,042 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 05:51:50,042 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 05:51:50,058 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:51:50" (1/1) ... [2020-10-20 05:51:50,058 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:51:50" (1/1) ... [2020-10-20 05:51:50,078 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:51:50" (1/1) ... [2020-10-20 05:51:50,078 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:51:50" (1/1) ... [2020-10-20 05:51:50,098 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:51:50" (1/1) ... [2020-10-20 05:51:50,104 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:51:50" (1/1) ... [2020-10-20 05:51:50,108 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:51:50" (1/1) ... [2020-10-20 05:51:50,115 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 05:51:50,116 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 05:51:50,116 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 05:51:50,116 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 05:51:50,117 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:51:50" (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 05:51:50,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-20 05:51:50,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 05:51:50,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2020-10-20 05:51:50,221 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-20 05:51:50,221 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-20 05:51:50,221 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-10-20 05:51:50,221 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-10-20 05:51:50,221 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-10-20 05:51:50,221 INFO L138 BoogieDeclarations]: Found implementation of procedure sumOfThirdBytes [2020-10-20 05:51:50,222 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-20 05:51:50,222 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-20 05:51:50,222 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-20 05:51:50,222 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-20 05:51:50,222 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-20 05:51:50,222 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-20 05:51:50,223 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-20 05:51:50,223 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-20 05:51:50,223 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-20 05:51:50,223 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-20 05:51:50,223 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-20 05:51:50,224 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-20 05:51:50,224 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-20 05:51:50,224 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-20 05:51:50,224 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-20 05:51:50,224 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-20 05:51:50,224 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-20 05:51:50,225 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-20 05:51:50,225 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-20 05:51:50,225 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-10-20 05:51:50,225 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-10-20 05:51:50,225 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-10-20 05:51:50,225 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-20 05:51:50,225 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-20 05:51:50,226 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-20 05:51:50,226 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-20 05:51:50,226 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-20 05:51:50,226 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-20 05:51:50,226 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-20 05:51:50,226 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-20 05:51:50,226 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-20 05:51:50,228 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-20 05:51:50,228 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-20 05:51:50,228 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-20 05:51:50,228 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-20 05:51:50,228 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-20 05:51:50,229 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-20 05:51:50,229 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-20 05:51:50,229 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-20 05:51:50,229 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-20 05:51:50,229 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-20 05:51:50,230 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-20 05:51:50,230 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-20 05:51:50,230 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-20 05:51:50,230 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-20 05:51:50,230 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-20 05:51:50,230 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-20 05:51:50,230 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-20 05:51:50,231 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-20 05:51:50,231 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-20 05:51:50,231 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-20 05:51:50,231 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-20 05:51:50,231 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-20 05:51:50,231 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-20 05:51:50,231 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-20 05:51:50,232 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-20 05:51:50,232 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-20 05:51:50,232 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-20 05:51:50,232 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-20 05:51:50,232 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-20 05:51:50,232 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-20 05:51:50,232 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-20 05:51:50,233 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-20 05:51:50,233 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-20 05:51:50,233 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-20 05:51:50,233 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-20 05:51:50,233 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-20 05:51:50,233 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-20 05:51:50,233 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-20 05:51:50,234 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-20 05:51:50,234 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-20 05:51:50,234 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-20 05:51:50,234 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-20 05:51:50,234 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-20 05:51:50,234 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-20 05:51:50,234 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-20 05:51:50,235 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-20 05:51:50,235 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-20 05:51:50,235 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-20 05:51:50,235 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-20 05:51:50,235 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-20 05:51:50,235 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-20 05:51:50,235 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-20 05:51:50,236 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-20 05:51:50,236 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-20 05:51:50,236 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-20 05:51:50,236 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-20 05:51:50,236 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-20 05:51:50,236 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-20 05:51:50,236 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-20 05:51:50,236 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-20 05:51:50,237 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-20 05:51:50,237 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-20 05:51:50,237 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-20 05:51:50,237 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-20 05:51:50,237 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-20 05:51:50,237 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-20 05:51:50,237 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-20 05:51:50,238 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-20 05:51:50,238 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-20 05:51:50,238 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-20 05:51:50,238 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-20 05:51:50,238 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-20 05:51:50,238 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-20 05:51:50,238 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-20 05:51:50,239 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-20 05:51:50,239 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-20 05:51:50,239 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-20 05:51:50,239 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-20 05:51:50,239 INFO L130 BoogieDeclarations]: Found specification of procedure sumOfThirdBytes [2020-10-20 05:51:50,239 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2020-10-20 05:51:50,239 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-20 05:51:50,240 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 05:51:50,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-10-20 05:51:50,240 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 05:51:50,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-20 05:51:50,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 05:51:50,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2020-10-20 05:51:50,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2020-10-20 05:51:50,243 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-20 05:51:50,849 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 05:51:50,850 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-20 05:51:50,852 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:51:50 BoogieIcfgContainer [2020-10-20 05:51:50,852 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 05:51:50,853 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 05:51:50,853 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 05:51:50,857 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 05:51:50,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 05:51:49" (1/3) ... [2020-10-20 05:51:50,858 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22e352cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 05:51:50, skipping insertion in model container [2020-10-20 05:51:50,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:51:50" (2/3) ... [2020-10-20 05:51:50,859 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22e352cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 05:51:50, skipping insertion in model container [2020-10-20 05:51:50,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:51:50" (3/3) ... [2020-10-20 05:51:50,861 INFO L111 eAbstractionObserver]: Analyzing ICFG stroeder1-alloca-1.i [2020-10-20 05:51:50,873 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 05:51:50,881 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-10-20 05:51:50,896 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-20 05:51:50,917 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 05:51:50,917 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-20 05:51:50,918 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 05:51:50,918 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 05:51:50,918 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 05:51:50,918 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 05:51:50,918 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 05:51:50,918 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 05:51:50,932 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-10-20 05:51:50,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 05:51:50,953 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:51:50,954 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:51:50,955 INFO L429 AbstractCegarLoop]: === Iteration 1 === [sumOfThirdBytesErr1REQUIRES_VIOLATION, sumOfThirdBytesErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:51:50,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:51:50,960 INFO L82 PathProgramCache]: Analyzing trace with hash -1988697556, now seen corresponding path program 1 times [2020-10-20 05:51:50,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 05:51:50,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1908746292] [2020-10-20 05:51:50,971 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 05:51:51,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:51:51,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-20 05:51:51,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:51:51,272 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 05:51:51,273 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:51:51,283 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:51:51,284 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:51:51,284 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2020-10-20 05:51:51,301 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 05:51:51,301 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 05:51:51,482 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 05:51:51,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1908746292] [2020-10-20 05:51:51,484 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:51:51,484 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-10-20 05:51:51,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533605444] [2020-10-20 05:51:51,490 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 05:51:51,491 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 05:51:51,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 05:51:51,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-20 05:51:51,503 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 6 states. [2020-10-20 05:51:51,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:51:51,936 INFO L93 Difference]: Finished difference Result 56 states and 62 transitions. [2020-10-20 05:51:51,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 05:51:51,938 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-10-20 05:51:51,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:51:51,947 INFO L225 Difference]: With dead ends: 56 [2020-10-20 05:51:51,947 INFO L226 Difference]: Without dead ends: 51 [2020-10-20 05:51:51,949 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 05:51:51,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-20 05:51:51,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 32. [2020-10-20 05:51:51,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-20 05:51:51,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2020-10-20 05:51:51,991 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 10 [2020-10-20 05:51:51,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:51:51,991 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2020-10-20 05:51:51,991 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 05:51:51,992 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2020-10-20 05:51:51,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 05:51:51,992 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:51:51,992 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:51:52,214 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-20 05:51:52,215 INFO L429 AbstractCegarLoop]: === Iteration 2 === [sumOfThirdBytesErr1REQUIRES_VIOLATION, sumOfThirdBytesErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:51:52,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:51:52,216 INFO L82 PathProgramCache]: Analyzing trace with hash -1988697557, now seen corresponding path program 1 times [2020-10-20 05:51:52,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 05:51:52,217 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1890075843] [2020-10-20 05:51:52,217 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 05:51:52,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:51:52,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-20 05:51:52,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:51:52,339 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 05:51:52,340 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:51:52,342 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:51:52,343 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:51:52,343 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-20 05:51:52,347 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 05:51:52,347 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 05:51:52,358 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 05:51:52,358 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1890075843] [2020-10-20 05:51:52,358 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:51:52,359 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-20 05:51:52,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49634143] [2020-10-20 05:51:52,361 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 05:51:52,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 05:51:52,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 05:51:52,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 05:51:52,362 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 3 states. [2020-10-20 05:51:52,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:51:52,401 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2020-10-20 05:51:52,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 05:51:52,401 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-20 05:51:52,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:51:52,402 INFO L225 Difference]: With dead ends: 31 [2020-10-20 05:51:52,402 INFO L226 Difference]: Without dead ends: 31 [2020-10-20 05:51:52,403 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 05:51:52,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-20 05:51:52,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-10-20 05:51:52,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-20 05:51:52,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2020-10-20 05:51:52,408 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 10 [2020-10-20 05:51:52,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:51:52,408 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2020-10-20 05:51:52,408 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 05:51:52,408 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2020-10-20 05:51:52,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-20 05:51:52,409 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:51:52,409 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:51:52,613 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-20 05:51:52,615 INFO L429 AbstractCegarLoop]: === Iteration 3 === [sumOfThirdBytesErr1REQUIRES_VIOLATION, sumOfThirdBytesErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:51:52,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:51:52,616 INFO L82 PathProgramCache]: Analyzing trace with hash 1264341451, now seen corresponding path program 1 times [2020-10-20 05:51:52,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 05:51:52,618 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1340886314] [2020-10-20 05:51:52,618 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 05:51:52,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:51:52,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-20 05:51:52,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:51:52,732 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 05:51:52,733 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:51:52,735 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:51:52,736 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:51:52,736 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-20 05:51:52,765 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 05:51:52,765 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 05:51:52,776 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 05:51:52,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1340886314] [2020-10-20 05:51:52,777 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:51:52,777 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-10-20 05:51:52,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630356115] [2020-10-20 05:51:52,778 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 05:51:52,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 05:51:52,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 05:51:52,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-20 05:51:52,779 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 6 states. [2020-10-20 05:51:52,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:51:52,928 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2020-10-20 05:51:52,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 05:51:52,929 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-10-20 05:51:52,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:51:52,932 INFO L225 Difference]: With dead ends: 34 [2020-10-20 05:51:52,932 INFO L226 Difference]: Without dead ends: 34 [2020-10-20 05:51:52,933 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-20 05:51:52,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-20 05:51:52,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 30. [2020-10-20 05:51:52,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-20 05:51:52,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2020-10-20 05:51:52,938 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 13 [2020-10-20 05:51:52,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:51:52,938 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2020-10-20 05:51:52,938 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 05:51:52,938 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2020-10-20 05:51:52,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-20 05:51:52,939 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:51:52,939 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:51:53,153 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-20 05:51:53,153 INFO L429 AbstractCegarLoop]: === Iteration 4 === [sumOfThirdBytesErr1REQUIRES_VIOLATION, sumOfThirdBytesErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:51:53,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:51:53,154 INFO L82 PathProgramCache]: Analyzing trace with hash 1264341452, now seen corresponding path program 1 times [2020-10-20 05:51:53,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 05:51:53,155 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1905936684] [2020-10-20 05:51:53,156 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 05:51:53,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:51:53,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-20 05:51:53,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:51:53,331 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 05:51:53,331 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:51:53,353 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:51:53,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1905936684] [2020-10-20 05:51:53,356 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-20 05:51:53,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [519069498] [2020-10-20 05:51:53,357 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 05:51:53,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:51:53,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 05:51:53,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:51:53,593 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 05:51:53,594 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 05:51:53,634 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 05:51:53,634 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:51:53,635 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-10-20 05:51:53,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080203336] [2020-10-20 05:51:53,635 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 05:51:53,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 05:51:53,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 05:51:53,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-20 05:51:53,636 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 6 states. [2020-10-20 05:51:53,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:51:53,740 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2020-10-20 05:51:53,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 05:51:53,741 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-10-20 05:51:53,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:51:53,742 INFO L225 Difference]: With dead ends: 32 [2020-10-20 05:51:53,742 INFO L226 Difference]: Without dead ends: 32 [2020-10-20 05:51:53,742 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 05:51:53,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-20 05:51:53,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 28. [2020-10-20 05:51:53,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-20 05:51:53,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2020-10-20 05:51:53,746 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 13 [2020-10-20 05:51:53,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:51:53,747 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2020-10-20 05:51:53,747 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 05:51:53,747 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2020-10-20 05:51:53,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-20 05:51:53,747 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:51:53,748 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:51:54,157 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 05:51:54,158 INFO L429 AbstractCegarLoop]: === Iteration 5 === [sumOfThirdBytesErr1REQUIRES_VIOLATION, sumOfThirdBytesErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:51:54,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:51:54,159 INFO L82 PathProgramCache]: Analyzing trace with hash 1369229423, now seen corresponding path program 1 times [2020-10-20 05:51:54,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 05:51:54,160 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [251406727] [2020-10-20 05:51:54,160 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 05:51:54,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:51:54,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 05:51:54,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:51:54,312 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 05:51:54,312 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 05:51:54,324 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [251406727] [2020-10-20 05:51:54,324 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-20 05:51:54,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [696789448] [2020-10-20 05:51:54,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-20 05:51:54,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:51:54,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 05:51:54,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:51:54,517 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 05:51:54,518 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 05:51:54,566 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 05:51:54,566 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 05:51:54,567 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2020-10-20 05:51:54,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992859814] [2020-10-20 05:51:54,567 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-20 05:51:54,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 05:51:54,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-20 05:51:54,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-20 05:51:54,568 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 8 states. [2020-10-20 05:51:54,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:51:54,653 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2020-10-20 05:51:54,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 05:51:54,655 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2020-10-20 05:51:54,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:51:54,655 INFO L225 Difference]: With dead ends: 38 [2020-10-20 05:51:54,656 INFO L226 Difference]: Without dead ends: 38 [2020-10-20 05:51:54,656 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-20 05:51:54,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-20 05:51:54,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 34. [2020-10-20 05:51:54,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-20 05:51:54,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2020-10-20 05:51:54,662 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 14 [2020-10-20 05:51:54,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:51:54,662 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2020-10-20 05:51:54,662 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-20 05:51:54,663 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2020-10-20 05:51:54,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-20 05:51:54,664 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:51:54,664 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:51:55,075 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3,8 cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-20 05:51:55,077 INFO L429 AbstractCegarLoop]: === Iteration 6 === [sumOfThirdBytesErr1REQUIRES_VIOLATION, sumOfThirdBytesErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:51:55,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:51:55,077 INFO L82 PathProgramCache]: Analyzing trace with hash 559882797, now seen corresponding path program 1 times [2020-10-20 05:51:55,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 05:51:55,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [298871756] [2020-10-20 05:51:55,079 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 05:51:55,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:51:55,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-20 05:51:55,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:51:55,218 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 05:51:55,218 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:51:55,239 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:51:55,240 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:51:55,240 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:22 [2020-10-20 05:51:55,342 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 05:51:55,342 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 05:51:55,738 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 05:51:55,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [298871756] [2020-10-20 05:51:55,739 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 05:51:55,739 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-20 05:51:55,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739417759] [2020-10-20 05:51:55,740 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-20 05:51:55,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 05:51:55,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-20 05:51:55,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-20 05:51:55,741 INFO L87 Difference]: Start difference. First operand 34 states and 36 transitions. Second operand 10 states. [2020-10-20 05:51:56,101 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2020-10-20 05:51:56,314 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-10-20 05:51:56,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:51:56,723 INFO L93 Difference]: Finished difference Result 54 states and 59 transitions. [2020-10-20 05:51:56,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-20 05:51:56,725 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-20 05:51:56,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:51:56,726 INFO L225 Difference]: With dead ends: 54 [2020-10-20 05:51:56,726 INFO L226 Difference]: Without dead ends: 54 [2020-10-20 05:51:56,727 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 05:51:56,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-20 05:51:56,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 46. [2020-10-20 05:51:56,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-20 05:51:56,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 51 transitions. [2020-10-20 05:51:56,733 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 51 transitions. Word has length 14 [2020-10-20 05:51:56,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:51:56,733 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 51 transitions. [2020-10-20 05:51:56,733 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-20 05:51:56,733 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 51 transitions. [2020-10-20 05:51:56,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-20 05:51:56,734 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:51:56,734 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 05:51:56,937 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-10-20 05:51:56,939 INFO L429 AbstractCegarLoop]: === Iteration 7 === [sumOfThirdBytesErr1REQUIRES_VIOLATION, sumOfThirdBytesErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:51:56,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:51:56,939 INFO L82 PathProgramCache]: Analyzing trace with hash 1408674343, now seen corresponding path program 1 times [2020-10-20 05:51:56,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 05:51:56,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1694957062] [2020-10-20 05:51:56,940 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 05:51:57,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:51:57,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-20 05:51:57,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:51:57,054 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 05:51:57,056 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:51:57,061 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:51:57,061 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:51:57,061 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-10-20 05:51:57,123 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 05:51:57,123 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 05:51:57,435 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 05:51:57,435 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1694957062] [2020-10-20 05:51:57,435 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:51:57,435 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2020-10-20 05:51:57,436 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734625810] [2020-10-20 05:51:57,436 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-20 05:51:57,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 05:51:57,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-20 05:51:57,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-10-20 05:51:57,437 INFO L87 Difference]: Start difference. First operand 46 states and 51 transitions. Second operand 12 states. [2020-10-20 05:51:58,131 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-10-20 05:51:58,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:51:58,646 INFO L93 Difference]: Finished difference Result 77 states and 85 transitions. [2020-10-20 05:51:58,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-20 05:51:58,647 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 17 [2020-10-20 05:51:58,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:51:58,649 INFO L225 Difference]: With dead ends: 77 [2020-10-20 05:51:58,649 INFO L226 Difference]: Without dead ends: 77 [2020-10-20 05:51:58,649 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=87, Invalid=333, Unknown=0, NotChecked=0, Total=420 [2020-10-20 05:51:58,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-20 05:51:58,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 48. [2020-10-20 05:51:58,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-20 05:51:58,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 54 transitions. [2020-10-20 05:51:58,656 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 54 transitions. Word has length 17 [2020-10-20 05:51:58,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:51:58,656 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 54 transitions. [2020-10-20 05:51:58,656 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-20 05:51:58,656 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 54 transitions. [2020-10-20 05:51:58,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-20 05:51:58,657 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:51:58,657 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 05:51:58,867 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2020-10-20 05:51:58,868 INFO L429 AbstractCegarLoop]: === Iteration 8 === [sumOfThirdBytesErr1REQUIRES_VIOLATION, sumOfThirdBytesErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:51:58,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:51:58,869 INFO L82 PathProgramCache]: Analyzing trace with hash -1009453957, now seen corresponding path program 1 times [2020-10-20 05:51:58,869 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 05:51:58,870 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [384850989] [2020-10-20 05:51:58,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2020-10-20 05:51:58,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:51:58,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-20 05:51:58,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:51:58,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [384850989] [2020-10-20 05:51:58,982 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-20 05:51:58,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [191168542] [2020-10-20 05:51:58,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 12 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-20 05:51:59,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:51:59,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-20 05:51:59,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:51:59,183 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-20 05:51:59,184 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [901021623] [2020-10-20 05:51:59,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 05:51:59,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:51:59,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-20 05:51:59,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:51:59,299 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 05:51:59,299 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 05:51:59,369 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 05:51:59,370 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:51:59,370 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2020-10-20 05:51:59,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469252282] [2020-10-20 05:51:59,370 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-20 05:51:59,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 05:51:59,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-20 05:51:59,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-20 05:51:59,372 INFO L87 Difference]: Start difference. First operand 48 states and 54 transitions. Second operand 7 states. [2020-10-20 05:51:59,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:51:59,459 INFO L93 Difference]: Finished difference Result 57 states and 62 transitions. [2020-10-20 05:51:59,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 05:51:59,459 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-10-20 05:51:59,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:51:59,461 INFO L225 Difference]: With dead ends: 57 [2020-10-20 05:51:59,461 INFO L226 Difference]: Without dead ends: 54 [2020-10-20 05:51:59,461 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 05:51:59,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-20 05:51:59,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 48. [2020-10-20 05:51:59,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-20 05:51:59,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 53 transitions. [2020-10-20 05:51:59,467 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 53 transitions. Word has length 21 [2020-10-20 05:51:59,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:51:59,468 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 53 transitions. [2020-10-20 05:51:59,468 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-20 05:51:59,468 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 53 transitions. [2020-10-20 05:51:59,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-20 05:51:59,469 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:51:59,470 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 05:52:00,075 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 cvc4 --incremental --print-success --lang smt --rewrite-divk,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,11 mathsat -unsat_core_generation=3 [2020-10-20 05:52:00,075 INFO L429 AbstractCegarLoop]: === Iteration 9 === [sumOfThirdBytesErr1REQUIRES_VIOLATION, sumOfThirdBytesErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:52:00,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:52:00,076 INFO L82 PathProgramCache]: Analyzing trace with hash -960728982, now seen corresponding path program 1 times [2020-10-20 05:52:00,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 05:52:00,080 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1186692730] [2020-10-20 05:52:00,080 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 05:52:00,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:00,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-20 05:52:00,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:52:00,212 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 05:52:00,212 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 05:52:00,277 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 05:52:00,277 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1186692730] [2020-10-20 05:52:00,278 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 05:52:00,278 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2020-10-20 05:52:00,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038439565] [2020-10-20 05:52:00,279 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-20 05:52:00,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 05:52:00,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-20 05:52:00,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-20 05:52:00,280 INFO L87 Difference]: Start difference. First operand 48 states and 53 transitions. Second operand 10 states. [2020-10-20 05:52:00,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:52:00,378 INFO L93 Difference]: Finished difference Result 61 states and 65 transitions. [2020-10-20 05:52:00,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 05:52:00,378 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 21 [2020-10-20 05:52:00,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:52:00,379 INFO L225 Difference]: With dead ends: 61 [2020-10-20 05:52:00,379 INFO L226 Difference]: Without dead ends: 61 [2020-10-20 05:52:00,380 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 05:52:00,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-20 05:52:00,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 58. [2020-10-20 05:52:00,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-20 05:52:00,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 63 transitions. [2020-10-20 05:52:00,385 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 63 transitions. Word has length 21 [2020-10-20 05:52:00,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:52:00,386 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 63 transitions. [2020-10-20 05:52:00,386 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-20 05:52:00,386 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 63 transitions. [2020-10-20 05:52:00,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-20 05:52:00,387 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:52:00,387 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 05:52:00,595 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 mathsat -unsat_core_generation=3 [2020-10-20 05:52:00,596 INFO L429 AbstractCegarLoop]: === Iteration 10 === [sumOfThirdBytesErr1REQUIRES_VIOLATION, sumOfThirdBytesErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:52:00,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:52:00,596 INFO L82 PathProgramCache]: Analyzing trace with hash 2054374636, now seen corresponding path program 1 times [2020-10-20 05:52:00,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 05:52:00,598 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1527492575] [2020-10-20 05:52:00,598 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 05:52:00,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:00,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 18 conjunts are in the unsatisfiable core [2020-10-20 05:52:00,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:52:00,729 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 05:52:00,729 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:52:00,746 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:52:00,746 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:52:00,746 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:20, output treesize:19 [2020-10-20 05:52:00,931 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 05:52:00,931 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 05:52:01,010 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1527492575] [2020-10-20 05:52:01,011 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-20 05:52:01,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1788711679] [2020-10-20 05:52:01,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 16 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-20 05:52:01,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:01,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-20 05:52:01,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:52:01,517 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:52:01,517 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 05:52:01,828 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:52:01,828 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 05:52:01,828 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 15 [2020-10-20 05:52:01,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118781522] [2020-10-20 05:52:01,829 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-20 05:52:01,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 05:52:01,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-20 05:52:01,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=364, Unknown=0, NotChecked=0, Total=420 [2020-10-20 05:52:01,830 INFO L87 Difference]: Start difference. First operand 58 states and 63 transitions. Second operand 15 states. [2020-10-20 05:52:02,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:52:02,305 INFO L93 Difference]: Finished difference Result 71 states and 75 transitions. [2020-10-20 05:52:02,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-20 05:52:02,306 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 21 [2020-10-20 05:52:02,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:52:02,307 INFO L225 Difference]: With dead ends: 71 [2020-10-20 05:52:02,308 INFO L226 Difference]: Without dead ends: 71 [2020-10-20 05:52:02,308 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=94, Invalid=556, Unknown=0, NotChecked=0, Total=650 [2020-10-20 05:52:02,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-20 05:52:02,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 58. [2020-10-20 05:52:02,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-20 05:52:02,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 63 transitions. [2020-10-20 05:52:02,313 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 63 transitions. Word has length 21 [2020-10-20 05:52:02,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:52:02,314 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 63 transitions. [2020-10-20 05:52:02,314 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-20 05:52:02,314 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 63 transitions. [2020-10-20 05:52:02,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-20 05:52:02,315 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:52:02,315 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 05:52:02,718 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 mathsat -unsat_core_generation=3,16 cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-20 05:52:02,718 INFO L429 AbstractCegarLoop]: === Iteration 11 === [sumOfThirdBytesErr1REQUIRES_VIOLATION, sumOfThirdBytesErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:52:02,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:52:02,719 INFO L82 PathProgramCache]: Analyzing trace with hash 905437502, now seen corresponding path program 1 times [2020-10-20 05:52:02,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 05:52:02,720 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [370022685] [2020-10-20 05:52:02,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 17 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with mathsat -unsat_core_generation=3 [2020-10-20 05:52:02,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:52:02,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-20 05:52:02,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:52:02,828 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 05:52:02,829 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:52:02,833 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:52:02,833 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:52:02,834 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-20 05:52:02,902 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:52:02,903 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 05:52:02,905 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:52:02,921 INFO L625 ElimStorePlain]: treesize reduction 10, result has 60.0 percent of original size [2020-10-20 05:52:02,923 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 05:52:02,927 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 05:52:02,927 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:17, output treesize:15 [2020-10-20 05:52:02,928 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 05:52:02,939 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 05:52:02,954 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 05:52:02,973 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 05:52:02,988 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 05:52:03,017 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 05:52:03,031 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 05:52:03,044 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 05:52:03,058 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 05:52:03,070 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 05:52:03,099 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 05:52:03,100 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 05:52:05,185 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 05:52:05,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [370022685] [2020-10-20 05:52:05,186 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:52:05,186 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 8 [2020-10-20 05:52:05,186 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353187275] [2020-10-20 05:52:05,186 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-20 05:52:05,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 05:52:05,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-20 05:52:05,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=50, Unknown=1, NotChecked=0, Total=72 [2020-10-20 05:52:05,187 INFO L87 Difference]: Start difference. First operand 58 states and 63 transitions. Second operand 9 states. [2020-10-20 05:52:05,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:52:05,353 INFO L93 Difference]: Finished difference Result 57 states and 62 transitions. [2020-10-20 05:52:05,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 05:52:05,354 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-20 05:52:05,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:52:05,355 INFO L225 Difference]: With dead ends: 57 [2020-10-20 05:52:05,355 INFO L226 Difference]: Without dead ends: 36 [2020-10-20 05:52:05,355 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 33 SyntacticMatches, 10 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=34, Invalid=75, Unknown=1, NotChecked=0, Total=110 [2020-10-20 05:52:05,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-20 05:52:05,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-10-20 05:52:05,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-20 05:52:05,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2020-10-20 05:52:05,359 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 25 [2020-10-20 05:52:05,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:52:05,359 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2020-10-20 05:52:05,360 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-20 05:52:05,360 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2020-10-20 05:52:05,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-20 05:52:05,361 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:52:05,361 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:52:05,571 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 mathsat -unsat_core_generation=3 [2020-10-20 05:52:05,571 INFO L429 AbstractCegarLoop]: === Iteration 12 === [sumOfThirdBytesErr1REQUIRES_VIOLATION, sumOfThirdBytesErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:52:05,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:52:05,571 INFO L82 PathProgramCache]: Analyzing trace with hash 517854665, now seen corresponding path program 2 times [2020-10-20 05:52:05,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 05:52:05,572 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [376071645] [2020-10-20 05:52:05,572 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 18 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with mathsat -unsat_core_generation=3 [2020-10-20 05:52:05,678 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-20 05:52:05,678 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 05:52:05,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 18 conjunts are in the unsatisfiable core [2020-10-20 05:52:05,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:52:05,708 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 05:52:05,708 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:52:05,722 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:52:05,723 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:52:05,723 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:20, output treesize:19 [2020-10-20 05:52:05,896 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-20 05:52:05,897 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 05:52:06,501 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-20 05:52:06,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [376071645] [2020-10-20 05:52:06,502 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 05:52:06,503 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-20 05:52:06,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272445492] [2020-10-20 05:52:06,503 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-20 05:52:06,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 05:52:06,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-20 05:52:06,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2020-10-20 05:52:06,504 INFO L87 Difference]: Start difference. First operand 36 states and 39 transitions. Second operand 14 states. [2020-10-20 05:52:07,450 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2020-10-20 05:52:07,804 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2020-10-20 05:52:08,074 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2020-10-20 05:52:08,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:52:08,290 INFO L93 Difference]: Finished difference Result 50 states and 53 transitions. [2020-10-20 05:52:08,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-20 05:52:08,298 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 25 [2020-10-20 05:52:08,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:52:08,299 INFO L225 Difference]: With dead ends: 50 [2020-10-20 05:52:08,299 INFO L226 Difference]: Without dead ends: 50 [2020-10-20 05:52:08,301 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=111, Invalid=351, Unknown=0, NotChecked=0, Total=462 [2020-10-20 05:52:08,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-20 05:52:08,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2020-10-20 05:52:08,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-20 05:52:08,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 51 transitions. [2020-10-20 05:52:08,305 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 51 transitions. Word has length 25 [2020-10-20 05:52:08,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:52:08,306 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 51 transitions. [2020-10-20 05:52:08,306 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-20 05:52:08,307 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 51 transitions. [2020-10-20 05:52:08,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-20 05:52:08,307 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:52:08,308 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:52:08,508 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 mathsat -unsat_core_generation=3 [2020-10-20 05:52:08,509 INFO L429 AbstractCegarLoop]: === Iteration 13 === [sumOfThirdBytesErr1REQUIRES_VIOLATION, sumOfThirdBytesErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:52:08,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:52:08,509 INFO L82 PathProgramCache]: Analyzing trace with hash -186380554, now seen corresponding path program 2 times [2020-10-20 05:52:08,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 05:52:08,510 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1833313785] [2020-10-20 05:52:08,511 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 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 05:52:08,609 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-20 05:52:08,609 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 05:52:08,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-20 05:52:08,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:52:08,628 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 05:52:08,629 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:52:08,645 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:52:08,645 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:52:08,646 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:22 [2020-10-20 05:52:08,903 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 05:52:08,903 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 05:52:09,623 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-20 05:52:12,226 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 05:52:12,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1833313785] [2020-10-20 05:52:12,227 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 05:52:12,227 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2020-10-20 05:52:12,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277630421] [2020-10-20 05:52:12,228 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-20 05:52:12,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 05:52:12,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-20 05:52:12,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=243, Unknown=1, NotChecked=0, Total=342 [2020-10-20 05:52:12,229 INFO L87 Difference]: Start difference. First operand 48 states and 51 transitions. Second operand 19 states. [2020-10-20 05:52:13,744 WARN L193 SmtUtils]: Spent 484.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-10-20 05:52:14,395 WARN L193 SmtUtils]: Spent 459.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-20 05:52:16,087 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2020-10-20 05:52:16,711 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2020-10-20 05:52:17,122 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2020-10-20 05:52:17,621 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2020-10-20 05:52:17,954 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2020-10-20 05:52:18,264 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-10-20 05:52:18,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:52:18,940 INFO L93 Difference]: Finished difference Result 79 states and 88 transitions. [2020-10-20 05:52:18,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-20 05:52:18,943 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 26 [2020-10-20 05:52:18,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:52:18,944 INFO L225 Difference]: With dead ends: 79 [2020-10-20 05:52:18,944 INFO L226 Difference]: Without dead ends: 79 [2020-10-20 05:52:18,945 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=325, Invalid=666, Unknown=1, NotChecked=0, Total=992 [2020-10-20 05:52:18,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-20 05:52:18,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 72. [2020-10-20 05:52:18,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-20 05:52:18,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 81 transitions. [2020-10-20 05:52:18,949 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 81 transitions. Word has length 26 [2020-10-20 05:52:18,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:52:18,950 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 81 transitions. [2020-10-20 05:52:18,950 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-20 05:52:18,950 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 81 transitions. [2020-10-20 05:52:18,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-20 05:52:18,951 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:52:18,951 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 05:52:19,161 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 mathsat -unsat_core_generation=3 [2020-10-20 05:52:19,162 INFO L429 AbstractCegarLoop]: === Iteration 14 === [sumOfThirdBytesErr1REQUIRES_VIOLATION, sumOfThirdBytesErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:52:19,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:52:19,162 INFO L82 PathProgramCache]: Analyzing trace with hash 1808857362, now seen corresponding path program 3 times [2020-10-20 05:52:19,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 05:52:19,164 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1682261539] [2020-10-20 05:52:19,164 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 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 05:52:19,330 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2020-10-20 05:52:19,330 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 05:52:19,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 28 conjunts are in the unsatisfiable core [2020-10-20 05:52:19,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:52:19,363 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 05:52:19,364 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:52:19,382 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:52:19,382 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:52:19,382 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:22 [2020-10-20 05:52:19,817 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 14 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:52:19,817 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 05:52:22,864 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2020-10-20 05:52:23,174 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-20 05:52:23,947 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 05:52:23,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1682261539] [2020-10-20 05:52:23,947 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 05:52:23,947 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 16] total 28 [2020-10-20 05:52:23,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735718404] [2020-10-20 05:52:23,948 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-20 05:52:23,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 05:52:23,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-20 05:52:23,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=627, Unknown=0, NotChecked=0, Total=756 [2020-10-20 05:52:23,950 INFO L87 Difference]: Start difference. First operand 72 states and 81 transitions. Second operand 28 states. [2020-10-20 05:52:26,270 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2020-10-20 05:52:27,016 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2020-10-20 05:52:27,819 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2020-10-20 05:52:28,326 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2020-10-20 05:52:29,225 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2020-10-20 05:52:29,766 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2020-10-20 05:52:30,498 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2020-10-20 05:52:31,050 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2020-10-20 05:52:31,675 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2020-10-20 05:52:32,220 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2020-10-20 05:52:32,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:52:32,971 INFO L93 Difference]: Finished difference Result 89 states and 97 transitions. [2020-10-20 05:52:32,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-20 05:52:32,974 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 37 [2020-10-20 05:52:32,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:52:32,976 INFO L225 Difference]: With dead ends: 89 [2020-10-20 05:52:32,976 INFO L226 Difference]: Without dead ends: 78 [2020-10-20 05:52:32,977 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 415 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=307, Invalid=1673, Unknown=0, NotChecked=0, Total=1980 [2020-10-20 05:52:32,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-20 05:52:32,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 76. [2020-10-20 05:52:32,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-20 05:52:32,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 84 transitions. [2020-10-20 05:52:32,982 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 84 transitions. Word has length 37 [2020-10-20 05:52:32,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:52:32,982 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 84 transitions. [2020-10-20 05:52:32,983 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-20 05:52:32,983 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 84 transitions. [2020-10-20 05:52:32,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-20 05:52:32,984 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:52:32,985 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 05:52:33,196 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 mathsat -unsat_core_generation=3 [2020-10-20 05:52:33,197 INFO L429 AbstractCegarLoop]: === Iteration 15 === [sumOfThirdBytesErr1REQUIRES_VIOLATION, sumOfThirdBytesErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:52:33,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:52:33,197 INFO L82 PathProgramCache]: Analyzing trace with hash -281161166, now seen corresponding path program 4 times [2020-10-20 05:52:33,198 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 05:52:33,198 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1274066714] [2020-10-20 05:52:33,199 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 21 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with mathsat -unsat_core_generation=3 [2020-10-20 05:52:33,319 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-20 05:52:33,319 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 05:52:33,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 27 conjunts are in the unsatisfiable core [2020-10-20 05:52:33,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:52:33,345 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 05:52:33,345 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:52:33,362 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:52:33,362 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:52:33,363 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:22 [2020-10-20 05:52:33,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1274066714] [2020-10-20 05:52:33,541 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-20 05:52:33,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1823962886] [2020-10-20 05:52:33,541 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 22 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-20 05:52:33,845 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-20 05:52:33,845 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 05:52:33,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-20 05:52:33,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:52:34,206 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 05:52:34,207 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 05:52:34,734 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 05:52:34,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 05:52:34,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 23 [2020-10-20 05:52:34,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83954507] [2020-10-20 05:52:34,735 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-20 05:52:34,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 05:52:34,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-20 05:52:34,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=650, Unknown=0, NotChecked=0, Total=756 [2020-10-20 05:52:34,736 INFO L87 Difference]: Start difference. First operand 76 states and 84 transitions. Second operand 23 states. [2020-10-20 05:52:35,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:52:35,543 INFO L93 Difference]: Finished difference Result 91 states and 98 transitions. [2020-10-20 05:52:35,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-20 05:52:35,544 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 45 [2020-10-20 05:52:35,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:52:35,545 INFO L225 Difference]: With dead ends: 91 [2020-10-20 05:52:35,545 INFO L226 Difference]: Without dead ends: 76 [2020-10-20 05:52:35,548 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 05:52:35,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-20 05:52:35,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2020-10-20 05:52:35,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-20 05:52:35,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 83 transitions. [2020-10-20 05:52:35,551 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 83 transitions. Word has length 45 [2020-10-20 05:52:35,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:52:35,552 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 83 transitions. [2020-10-20 05:52:35,552 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-20 05:52:35,552 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 83 transitions. [2020-10-20 05:52:35,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-20 05:52:35,553 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:52:35,554 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 05:52:35,959 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 mathsat -unsat_core_generation=3,22 cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-20 05:52:35,960 INFO L429 AbstractCegarLoop]: === Iteration 16 === [sumOfThirdBytesErr1REQUIRES_VIOLATION, sumOfThirdBytesErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:52:35,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:52:35,961 INFO L82 PathProgramCache]: Analyzing trace with hash -1096098801, now seen corresponding path program 5 times [2020-10-20 05:52:35,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 05:52:35,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [724966670] [2020-10-20 05:52:35,962 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 23 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with mathsat -unsat_core_generation=3 [2020-10-20 05:52:36,178 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2020-10-20 05:52:36,178 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 05:52:36,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 33 conjunts are in the unsatisfiable core [2020-10-20 05:52:36,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:52:36,203 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 05:52:36,203 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:52:36,223 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:52:36,224 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:52:36,224 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:22 [2020-10-20 05:52:37,277 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [724966670] [2020-10-20 05:52:37,278 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-20 05:52:37,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [979779384] [2020-10-20 05:52:37,279 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 24 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-20 05:52:39,084 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2020-10-20 05:52:39,084 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 05:52:39,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 17 conjunts are in the unsatisfiable core [2020-10-20 05:52:39,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:52:39,981 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 21 proven. 56 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-20 05:52:39,981 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 05:52:40,249 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-20 05:52:40,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [914065120] [2020-10-20 05:52:40,250 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 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 05:52:42,683 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2020-10-20 05:52:42,683 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 05:52:42,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 21 conjunts are in the unsatisfiable core [2020-10-20 05:52:42,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:52:43,589 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 21 proven. 56 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-20 05:52:43,589 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 05:52:43,780 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-20 05:52:43,780 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:52:43,781 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-10-20 05:52:43,781 ERROR L205 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2020-10-20 05:52:43,781 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 05:52:44,386 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 mathsat -unsat_core_generation=3,24 cvc4 --incremental --print-success --lang smt --rewrite-divk,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 05:52:44,407 WARN L238 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-20 05:52:44,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 05:52:44 BoogieIcfgContainer [2020-10-20 05:52:44,408 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 05:52:44,410 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 05:52:44,411 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 05:52:44,411 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 05:52:44,412 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:51:50" (3/4) ... [2020-10-20 05:52:44,415 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 05:52:44,415 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 05:52:44,416 INFO L168 Benchmark]: Toolchain (without parser) took 55063.67 ms. Allocated memory was 34.1 MB in the beginning and 85.5 MB in the end (delta: 51.4 MB). Free memory was 9.8 MB in the beginning and 53.9 MB in the end (delta: -44.2 MB). Peak memory consumption was 7.2 MB. Max. memory is 14.3 GB. [2020-10-20 05:52:44,417 INFO L168 Benchmark]: CDTParser took 0.40 ms. Allocated memory is still 33.0 MB. Free memory was 17.8 MB in the beginning and 17.8 MB in the end (delta: 41.9 kB). Peak memory consumption was 41.9 kB. Max. memory is 14.3 GB. [2020-10-20 05:52:44,418 INFO L168 Benchmark]: CACSL2BoogieTranslator took 681.30 ms. Allocated memory was 34.1 MB in the beginning and 45.1 MB in the end (delta: 11.0 MB). Free memory was 8.9 MB in the beginning and 15.7 MB in the end (delta: -6.9 MB). Peak memory consumption was 8.5 MB. Max. memory is 14.3 GB. [2020-10-20 05:52:44,418 INFO L168 Benchmark]: Boogie Preprocessor took 74.20 ms. Allocated memory is still 45.1 MB. Free memory was 15.7 MB in the beginning and 12.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 14.3 GB. [2020-10-20 05:52:44,419 INFO L168 Benchmark]: RCFGBuilder took 735.92 ms. Allocated memory was 45.1 MB in the beginning and 47.2 MB in the end (delta: 2.1 MB). Free memory was 12.5 MB in the beginning and 15.8 MB in the end (delta: -3.4 MB). Peak memory consumption was 3.9 MB. Max. memory is 14.3 GB. [2020-10-20 05:52:44,419 INFO L168 Benchmark]: TraceAbstraction took 53554.91 ms. Allocated memory was 47.2 MB in the beginning and 85.5 MB in the end (delta: 38.3 MB). Free memory was 15.5 MB in the beginning and 53.9 MB in the end (delta: -38.4 MB). There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 05:52:44,420 INFO L168 Benchmark]: Witness Printer took 4.67 ms. Allocated memory is still 85.5 MB. Free memory is still 53.9 MB. There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 05:52:44,422 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40 ms. Allocated memory is still 33.0 MB. Free memory was 17.8 MB in the beginning and 17.8 MB in the end (delta: 41.9 kB). Peak memory consumption was 41.9 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 681.30 ms. Allocated memory was 34.1 MB in the beginning and 45.1 MB in the end (delta: 11.0 MB). Free memory was 8.9 MB in the beginning and 15.7 MB in the end (delta: -6.9 MB). Peak memory consumption was 8.5 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 74.20 ms. Allocated memory is still 45.1 MB. Free memory was 15.7 MB in the beginning and 12.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 14.3 GB. * RCFGBuilder took 735.92 ms. Allocated memory was 45.1 MB in the beginning and 47.2 MB in the end (delta: 2.1 MB). Free memory was 12.5 MB in the beginning and 15.8 MB in the end (delta: -3.4 MB). Peak memory consumption was 3.9 MB. Max. memory is 14.3 GB. * TraceAbstraction took 53554.91 ms. Allocated memory was 47.2 MB in the beginning and 85.5 MB in the end (delta: 38.3 MB). Free memory was 15.5 MB in the beginning and 53.9 MB in the end (delta: -38.4 MB). There was no memory consumed. Max. memory is 14.3 GB. * Witness Printer took 4.67 ms. Allocated memory is still 85.5 MB. Free memory is still 53.9 MB. There was no memory consumed. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 520]: 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 i = 0; [L531] COND TRUE i < array_size [L533] numbers[i] = __VERIFIER_nondet_int() [L531] i++ [L531] COND TRUE i < array_size [L533] numbers[i] = __VERIFIER_nondet_int() [L531] i++ [L531] COND TRUE i < array_size [L533] numbers[i] = __VERIFIER_nondet_int() [L531] i++ [L531] COND TRUE i < array_size [L533] numbers[i] = __VERIFIER_nondet_int() [L531] i++ [L531] COND FALSE !(i < array_size) [L535] CALL sumOfThirdBytes(numbers, array_size) [L514] int i, sum; [L515] char* p; [L516] sum = 0 [L517] i = 0 [L517] COND TRUE i < array_size [L518] p = &(numbers[i]) [L519] p = p + 2 [L520] EXPR \read(*p) [L520] sum = sum + *p [L517] i++ [L517] COND TRUE i < array_size [L518] p = &(numbers[i]) [L519] p = p + 2 [L520] EXPR \read(*p) [L520] sum = sum + *p [L517] i++ [L517] COND TRUE i < array_size [L518] p = &(numbers[i]) [L519] p = p + 2 [L520] EXPR \read(*p) [L520] sum = sum + *p [L517] i++ [L517] COND TRUE i < array_size [L518] p = &(numbers[i]) [L519] p = p + 2 [L520] EXPR \read(*p) [L520] sum = sum + *p [L517] i++ [L517] COND TRUE i < array_size [L518] p = &(numbers[i]) [L519] p = p + 2 [L520] EXPR \read(*p) [L520] sum = sum + *p [L517] i++ [L517] COND TRUE i < array_size [L518] p = &(numbers[i]) [L519] p = p + 2 [L520] \read(*p) - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 52 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 53.4s, OverallIterations: 16, TraceHistogramMax: 6, AutomataDifference: 22.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 327 SDtfs, 806 SDslu, 1440 SDs, 0 SdLazy, 1633 SolverSat, 242 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 774 GetRequests, 531 SyntacticMatches, 12 SemanticMatches, 231 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 1168 ImplicationChecksByTransitivity, 28.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=76occurred 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: 0.0s AutomataMinimizationTime, 15 MinimizatonAttempts, 101 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 14.6s InterpolantComputationTime, 312 NumberOfCodeBlocks, 312 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 594 ConstructedInterpolants, 18 QuantifiedInterpolants, 173581 SizeOfPredicates, 68 NumberOfNonLiveVariables, 995 ConjunctsInSsa, 149 ConjunctsInUnsatCore, 30 InterpolantComputations, 14 PerfectInterpolantSequences, 112/314 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...