./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/forester-heap/dll-rb-sentinel-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/forester-heap/dll-rb-sentinel-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 9aa86be9eb0317030839433587db2b1c5b5e93d6 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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/forester-heap/dll-rb-sentinel-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 9aa86be9eb0317030839433587db2b1c5b5e93d6 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 06:05:25,085 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 06:05:25,090 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 06:05:25,117 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 06:05:25,117 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 06:05:25,118 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 06:05:25,120 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 06:05:25,129 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 06:05:25,138 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 06:05:25,140 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 06:05:25,141 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 06:05:25,143 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 06:05:25,144 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 06:05:25,147 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 06:05:25,150 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 06:05:25,151 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 06:05:25,152 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 06:05:25,156 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 06:05:25,158 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 06:05:25,161 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 06:05:25,164 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 06:05:25,165 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 06:05:25,167 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 06:05:25,168 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 06:05:25,173 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 06:05:25,180 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 06:05:25,180 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 06:05:25,181 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 06:05:25,182 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 06:05:25,186 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 06:05:25,186 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 06:05:25,187 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 06:05:25,188 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 06:05:25,190 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 06:05:25,191 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 06:05:25,192 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 06:05:25,193 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 06:05:25,193 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 06:05:25,193 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 06:05:25,194 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 06:05:25,195 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 06:05:25,197 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-10-20 06:05:25,239 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 06:05:25,239 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 06:05:25,240 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 06:05:25,241 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 06:05:25,241 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 06:05:25,241 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 06:05:25,241 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 06:05:25,242 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 06:05:25,242 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 06:05:25,242 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 06:05:25,242 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 06:05:25,243 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-20 06:05:25,243 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-20 06:05:25,243 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-20 06:05:25,243 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 06:05:25,244 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-20 06:05:25,244 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 06:05:25,244 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 06:05:25,244 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 06:05:25,245 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 06:05:25,245 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 06:05:25,245 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 06:05:25,245 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 06:05:25,246 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 06:05:25,246 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 06:05:25,246 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 06:05:25,246 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 06:05:25,247 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 06:05:25,247 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 -> 9aa86be9eb0317030839433587db2b1c5b5e93d6 [2020-10-20 06:05:25,441 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 06:05:25,454 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 06:05:25,458 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 06:05:25,459 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 06:05:25,462 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 06:05:25,463 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i [2020-10-20 06:05:25,521 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c788384d/b01c373fda38407daf1d27d75769d33c/FLAGb13595243 [2020-10-20 06:05:26,057 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 06:05:26,057 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i [2020-10-20 06:05:26,070 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c788384d/b01c373fda38407daf1d27d75769d33c/FLAGb13595243 [2020-10-20 06:05:26,398 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c788384d/b01c373fda38407daf1d27d75769d33c [2020-10-20 06:05:26,402 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 06:05:26,409 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-20 06:05:26,410 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 06:05:26,411 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 06:05:26,414 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 06:05:26,416 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:05:26" (1/1) ... [2020-10-20 06:05:26,419 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19db7a20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:05:26, skipping insertion in model container [2020-10-20 06:05:26,419 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:05:26" (1/1) ... [2020-10-20 06:05:26,428 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 06:05:26,531 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 06:05:26,915 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:05:26,936 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 06:05:27,017 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:05:27,071 INFO L208 MainTranslator]: Completed translation [2020-10-20 06:05:27,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:05:27 WrapperNode [2020-10-20 06:05:27,072 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 06:05:27,073 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 06:05:27,073 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 06:05:27,073 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 06:05:27,087 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:05:27" (1/1) ... [2020-10-20 06:05:27,087 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:05:27" (1/1) ... [2020-10-20 06:05:27,105 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:05:27" (1/1) ... [2020-10-20 06:05:27,106 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:05:27" (1/1) ... [2020-10-20 06:05:27,130 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:05:27" (1/1) ... [2020-10-20 06:05:27,138 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:05:27" (1/1) ... [2020-10-20 06:05:27,143 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:05:27" (1/1) ... [2020-10-20 06:05:27,150 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 06:05:27,151 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 06:05:27,151 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 06:05:27,151 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 06:05:27,152 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:05:27" (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 06:05:27,221 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-20 06:05:27,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 06:05:27,222 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-20 06:05:27,222 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-20 06:05:27,224 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-20 06:05:27,225 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-20 06:05:27,225 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-20 06:05:27,225 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-20 06:05:27,226 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-20 06:05:27,226 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-20 06:05:27,227 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-20 06:05:27,227 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-20 06:05:27,227 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-20 06:05:27,227 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-20 06:05:27,228 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-20 06:05:27,228 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-20 06:05:27,231 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-20 06:05:27,231 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-20 06:05:27,231 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-20 06:05:27,231 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-20 06:05:27,231 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-20 06:05:27,232 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-20 06:05:27,232 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-20 06:05:27,233 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-20 06:05:27,233 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-20 06:05:27,234 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-20 06:05:27,235 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-20 06:05:27,235 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-20 06:05:27,235 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-20 06:05:27,235 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-20 06:05:27,235 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-20 06:05:27,235 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-20 06:05:27,235 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-20 06:05:27,236 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-20 06:05:27,236 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-20 06:05:27,236 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-20 06:05:27,236 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-20 06:05:27,236 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-20 06:05:27,237 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-20 06:05:27,237 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-20 06:05:27,237 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-20 06:05:27,238 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-20 06:05:27,238 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-20 06:05:27,238 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-20 06:05:27,238 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-20 06:05:27,238 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-20 06:05:27,238 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-20 06:05:27,238 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-20 06:05:27,239 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-20 06:05:27,239 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-20 06:05:27,239 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-20 06:05:27,239 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-20 06:05:27,239 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-20 06:05:27,240 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-20 06:05:27,240 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-20 06:05:27,240 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-20 06:05:27,240 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-20 06:05:27,240 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-20 06:05:27,241 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-20 06:05:27,241 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-20 06:05:27,241 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-20 06:05:27,241 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-20 06:05:27,241 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-20 06:05:27,241 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-20 06:05:27,241 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-20 06:05:27,241 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-20 06:05:27,242 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-20 06:05:27,242 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-20 06:05:27,242 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-20 06:05:27,243 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-20 06:05:27,243 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-20 06:05:27,243 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-20 06:05:27,243 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-20 06:05:27,244 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-20 06:05:27,244 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-20 06:05:27,244 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-20 06:05:27,244 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-20 06:05:27,245 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-20 06:05:27,246 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-20 06:05:27,246 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-20 06:05:27,246 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-20 06:05:27,246 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-20 06:05:27,246 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-20 06:05:27,246 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-20 06:05:27,246 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-20 06:05:27,246 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-20 06:05:27,247 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-20 06:05:27,247 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-20 06:05:27,247 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-20 06:05:27,247 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-20 06:05:27,247 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-20 06:05:27,247 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-20 06:05:27,247 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-20 06:05:27,247 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-20 06:05:27,248 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-20 06:05:27,248 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-20 06:05:27,248 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-20 06:05:27,248 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-20 06:05:27,248 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-20 06:05:27,248 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-20 06:05:27,248 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-20 06:05:27,249 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-20 06:05:27,249 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-20 06:05:27,249 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-20 06:05:27,249 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-20 06:05:27,249 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-20 06:05:27,249 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-20 06:05:27,249 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-20 06:05:27,249 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-20 06:05:27,249 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-20 06:05:27,250 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-20 06:05:27,250 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-20 06:05:27,250 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 06:05:27,250 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-20 06:05:27,250 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-20 06:05:27,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-20 06:05:27,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 06:05:27,250 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-20 06:05:27,250 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-20 06:05:27,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 06:05:27,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-20 06:05:27,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 06:05:27,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 06:05:27,996 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 06:05:27,996 INFO L298 CfgBuilder]: Removed 17 assume(true) statements. [2020-10-20 06:05:27,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:05:27 BoogieIcfgContainer [2020-10-20 06:05:27,999 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 06:05:28,000 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 06:05:28,000 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 06:05:28,004 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 06:05:28,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 06:05:26" (1/3) ... [2020-10-20 06:05:28,005 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@742c4314 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:05:28, skipping insertion in model container [2020-10-20 06:05:28,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:05:27" (2/3) ... [2020-10-20 06:05:28,006 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@742c4314 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:05:28, skipping insertion in model container [2020-10-20 06:05:28,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:05:27" (3/3) ... [2020-10-20 06:05:28,007 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-rb-sentinel-1.i [2020-10-20 06:05:28,019 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 06:05:28,027 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 71 error locations. [2020-10-20 06:05:28,041 INFO L253 AbstractCegarLoop]: Starting to check reachability of 71 error locations. [2020-10-20 06:05:28,059 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 06:05:28,059 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-20 06:05:28,059 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 06:05:28,060 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 06:05:28,060 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 06:05:28,060 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 06:05:28,060 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 06:05:28,060 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 06:05:28,084 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states. [2020-10-20 06:05:28,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-20 06:05:28,094 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:05:28,095 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:05:28,096 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-20 06:05:28,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:05:28,102 INFO L82 PathProgramCache]: Analyzing trace with hash 1063257867, now seen corresponding path program 1 times [2020-10-20 06:05:28,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:05:28,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725662527] [2020-10-20 06:05:28,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:05:28,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:05:28,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:05:28,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:05:28,361 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 06:05:28,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725662527] [2020-10-20 06:05:28,363 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:05:28,363 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 06:05:28,364 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466564663] [2020-10-20 06:05:28,369 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:05:28,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:05:28,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:05:28,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:05:28,388 INFO L87 Difference]: Start difference. First operand 174 states. Second operand 4 states. [2020-10-20 06:05:28,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:05:28,948 INFO L93 Difference]: Finished difference Result 191 states and 204 transitions. [2020-10-20 06:05:28,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:05:28,950 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-10-20 06:05:28,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:05:28,961 INFO L225 Difference]: With dead ends: 191 [2020-10-20 06:05:28,961 INFO L226 Difference]: Without dead ends: 187 [2020-10-20 06:05:28,963 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:05:28,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-10-20 06:05:29,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 159. [2020-10-20 06:05:29,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-10-20 06:05:29,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 170 transitions. [2020-10-20 06:05:29,011 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 170 transitions. Word has length 7 [2020-10-20 06:05:29,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:05:29,012 INFO L481 AbstractCegarLoop]: Abstraction has 159 states and 170 transitions. [2020-10-20 06:05:29,012 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:05:29,012 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 170 transitions. [2020-10-20 06:05:29,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-20 06:05:29,013 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:05:29,013 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:05:29,013 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 06:05:29,014 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-20 06:05:29,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:05:29,014 INFO L82 PathProgramCache]: Analyzing trace with hash 1063257868, now seen corresponding path program 1 times [2020-10-20 06:05:29,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:05:29,015 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168386013] [2020-10-20 06:05:29,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:05:29,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:05:29,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:05:29,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:05:29,122 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 06:05:29,123 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168386013] [2020-10-20 06:05:29,123 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:05:29,123 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 06:05:29,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672731898] [2020-10-20 06:05:29,125 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:05:29,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:05:29,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:05:29,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:05:29,127 INFO L87 Difference]: Start difference. First operand 159 states and 170 transitions. Second operand 4 states. [2020-10-20 06:05:29,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:05:29,449 INFO L93 Difference]: Finished difference Result 156 states and 167 transitions. [2020-10-20 06:05:29,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:05:29,450 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-10-20 06:05:29,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:05:29,463 INFO L225 Difference]: With dead ends: 156 [2020-10-20 06:05:29,463 INFO L226 Difference]: Without dead ends: 156 [2020-10-20 06:05:29,464 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:05:29,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-10-20 06:05:29,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2020-10-20 06:05:29,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-20 06:05:29,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 167 transitions. [2020-10-20 06:05:29,477 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 167 transitions. Word has length 7 [2020-10-20 06:05:29,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:05:29,477 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 167 transitions. [2020-10-20 06:05:29,478 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:05:29,478 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 167 transitions. [2020-10-20 06:05:29,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-20 06:05:29,478 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:05:29,479 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:05:29,479 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 06:05:29,479 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-20 06:05:29,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:05:29,480 INFO L82 PathProgramCache]: Analyzing trace with hash -224884273, now seen corresponding path program 1 times [2020-10-20 06:05:29,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:05:29,481 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691791645] [2020-10-20 06:05:29,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:05:29,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:05:29,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:05:29,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:05:29,568 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 06:05:29,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691791645] [2020-10-20 06:05:29,569 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:05:29,569 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 06:05:29,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709549327] [2020-10-20 06:05:29,570 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:05:29,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:05:29,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:05:29,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:05:29,571 INFO L87 Difference]: Start difference. First operand 156 states and 167 transitions. Second operand 4 states. [2020-10-20 06:05:29,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:05:29,890 INFO L93 Difference]: Finished difference Result 155 states and 166 transitions. [2020-10-20 06:05:29,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:05:29,890 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-20 06:05:29,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:05:29,911 INFO L225 Difference]: With dead ends: 155 [2020-10-20 06:05:29,911 INFO L226 Difference]: Without dead ends: 155 [2020-10-20 06:05:29,912 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:05:29,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-10-20 06:05:29,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 151. [2020-10-20 06:05:29,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-10-20 06:05:29,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 164 transitions. [2020-10-20 06:05:29,934 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 164 transitions. Word has length 11 [2020-10-20 06:05:29,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:05:29,935 INFO L481 AbstractCegarLoop]: Abstraction has 151 states and 164 transitions. [2020-10-20 06:05:29,935 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:05:29,935 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 164 transitions. [2020-10-20 06:05:29,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-20 06:05:29,936 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:05:29,936 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:05:29,936 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 06:05:29,936 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-20 06:05:29,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:05:29,939 INFO L82 PathProgramCache]: Analyzing trace with hash -224884272, now seen corresponding path program 1 times [2020-10-20 06:05:29,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:05:29,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804758084] [2020-10-20 06:05:29,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:05:29,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:05:30,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:05:30,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:05:30,075 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 06:05:30,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804758084] [2020-10-20 06:05:30,077 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:05:30,078 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 06:05:30,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257701904] [2020-10-20 06:05:30,079 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:05:30,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:05:30,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:05:30,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:05:30,080 INFO L87 Difference]: Start difference. First operand 151 states and 164 transitions. Second operand 4 states. [2020-10-20 06:05:30,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:05:30,413 INFO L93 Difference]: Finished difference Result 168 states and 180 transitions. [2020-10-20 06:05:30,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:05:30,414 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-20 06:05:30,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:05:30,415 INFO L225 Difference]: With dead ends: 168 [2020-10-20 06:05:30,416 INFO L226 Difference]: Without dead ends: 168 [2020-10-20 06:05:30,416 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:05:30,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-10-20 06:05:30,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 155. [2020-10-20 06:05:30,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-10-20 06:05:30,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 168 transitions. [2020-10-20 06:05:30,425 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 168 transitions. Word has length 11 [2020-10-20 06:05:30,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:05:30,426 INFO L481 AbstractCegarLoop]: Abstraction has 155 states and 168 transitions. [2020-10-20 06:05:30,426 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:05:30,426 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 168 transitions. [2020-10-20 06:05:30,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-20 06:05:30,427 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:05:30,427 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 06:05:30,427 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 06:05:30,427 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-20 06:05:30,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:05:30,428 INFO L82 PathProgramCache]: Analyzing trace with hash -1814833992, now seen corresponding path program 1 times [2020-10-20 06:05:30,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:05:30,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566307976] [2020-10-20 06:05:30,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:05:30,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:05:30,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:05:30,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:05:30,569 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 06:05:30,570 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566307976] [2020-10-20 06:05:30,570 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:05:30,570 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 06:05:30,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722423468] [2020-10-20 06:05:30,571 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 06:05:30,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:05:30,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 06:05:30,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:05:30,571 INFO L87 Difference]: Start difference. First operand 155 states and 168 transitions. Second operand 5 states. [2020-10-20 06:05:30,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:05:30,912 INFO L93 Difference]: Finished difference Result 156 states and 170 transitions. [2020-10-20 06:05:30,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 06:05:30,913 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-20 06:05:30,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:05:30,914 INFO L225 Difference]: With dead ends: 156 [2020-10-20 06:05:30,915 INFO L226 Difference]: Without dead ends: 156 [2020-10-20 06:05:30,916 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-20 06:05:30,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-10-20 06:05:30,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 142. [2020-10-20 06:05:30,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-20 06:05:30,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 157 transitions. [2020-10-20 06:05:30,935 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 157 transitions. Word has length 17 [2020-10-20 06:05:30,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:05:30,937 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 157 transitions. [2020-10-20 06:05:30,937 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 06:05:30,937 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 157 transitions. [2020-10-20 06:05:30,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-20 06:05:30,938 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:05:30,938 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 06:05:30,939 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-20 06:05:30,939 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-20 06:05:30,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:05:30,940 INFO L82 PathProgramCache]: Analyzing trace with hash -1814833991, now seen corresponding path program 1 times [2020-10-20 06:05:30,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:05:30,941 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419129868] [2020-10-20 06:05:30,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:05:30,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:05:31,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:05:31,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:05:31,072 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 06:05:31,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419129868] [2020-10-20 06:05:31,078 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:05:31,078 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 06:05:31,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392852982] [2020-10-20 06:05:31,079 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 06:05:31,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:05:31,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 06:05:31,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:05:31,081 INFO L87 Difference]: Start difference. First operand 142 states and 157 transitions. Second operand 5 states. [2020-10-20 06:05:31,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:05:31,500 INFO L93 Difference]: Finished difference Result 180 states and 196 transitions. [2020-10-20 06:05:31,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 06:05:31,501 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-20 06:05:31,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:05:31,503 INFO L225 Difference]: With dead ends: 180 [2020-10-20 06:05:31,503 INFO L226 Difference]: Without dead ends: 180 [2020-10-20 06:05:31,504 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-20 06:05:31,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-10-20 06:05:31,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 151. [2020-10-20 06:05:31,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-10-20 06:05:31,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 169 transitions. [2020-10-20 06:05:31,510 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 169 transitions. Word has length 17 [2020-10-20 06:05:31,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:05:31,511 INFO L481 AbstractCegarLoop]: Abstraction has 151 states and 169 transitions. [2020-10-20 06:05:31,511 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 06:05:31,511 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 169 transitions. [2020-10-20 06:05:31,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-20 06:05:31,512 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:05:31,512 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:05:31,512 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-20 06:05:31,512 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-20 06:05:31,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:05:31,513 INFO L82 PathProgramCache]: Analyzing trace with hash -298743653, now seen corresponding path program 1 times [2020-10-20 06:05:31,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:05:31,513 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248702984] [2020-10-20 06:05:31,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:05:31,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:05:31,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:05:31,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:05:31,579 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 06:05:31,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248702984] [2020-10-20 06:05:31,580 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:05:31,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 06:05:31,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660126729] [2020-10-20 06:05:31,581 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 06:05:31,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:05:31,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 06:05:31,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-20 06:05:31,582 INFO L87 Difference]: Start difference. First operand 151 states and 169 transitions. Second operand 6 states. [2020-10-20 06:05:32,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:05:32,023 INFO L93 Difference]: Finished difference Result 201 states and 227 transitions. [2020-10-20 06:05:32,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 06:05:32,023 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-10-20 06:05:32,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:05:32,025 INFO L225 Difference]: With dead ends: 201 [2020-10-20 06:05:32,025 INFO L226 Difference]: Without dead ends: 201 [2020-10-20 06:05:32,028 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 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 06:05:32,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-10-20 06:05:32,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 150. [2020-10-20 06:05:32,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-10-20 06:05:32,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 167 transitions. [2020-10-20 06:05:32,039 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 167 transitions. Word has length 19 [2020-10-20 06:05:32,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:05:32,039 INFO L481 AbstractCegarLoop]: Abstraction has 150 states and 167 transitions. [2020-10-20 06:05:32,040 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 06:05:32,040 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 167 transitions. [2020-10-20 06:05:32,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-20 06:05:32,041 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:05:32,041 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:05:32,042 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-20 06:05:32,043 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-20 06:05:32,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:05:32,043 INFO L82 PathProgramCache]: Analyzing trace with hash -298743652, now seen corresponding path program 1 times [2020-10-20 06:05:32,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:05:32,045 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404671348] [2020-10-20 06:05:32,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:05:32,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:05:32,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:05:32,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:05:32,178 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 06:05:32,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404671348] [2020-10-20 06:05:32,179 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:05:32,179 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 06:05:32,179 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646120486] [2020-10-20 06:05:32,180 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 06:05:32,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:05:32,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 06:05:32,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-20 06:05:32,180 INFO L87 Difference]: Start difference. First operand 150 states and 167 transitions. Second operand 6 states. [2020-10-20 06:05:32,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:05:32,719 INFO L93 Difference]: Finished difference Result 224 states and 251 transitions. [2020-10-20 06:05:32,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 06:05:32,720 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-10-20 06:05:32,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:05:32,721 INFO L225 Difference]: With dead ends: 224 [2020-10-20 06:05:32,722 INFO L226 Difference]: Without dead ends: 224 [2020-10-20 06:05:32,722 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-20 06:05:32,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-10-20 06:05:32,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 149. [2020-10-20 06:05:32,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-20 06:05:32,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 165 transitions. [2020-10-20 06:05:32,728 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 165 transitions. Word has length 19 [2020-10-20 06:05:32,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:05:32,729 INFO L481 AbstractCegarLoop]: Abstraction has 149 states and 165 transitions. [2020-10-20 06:05:32,729 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 06:05:32,729 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 165 transitions. [2020-10-20 06:05:32,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-20 06:05:32,730 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:05:32,730 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 06:05:32,731 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-20 06:05:32,731 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-20 06:05:32,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:05:32,732 INFO L82 PathProgramCache]: Analyzing trace with hash 719067562, now seen corresponding path program 1 times [2020-10-20 06:05:32,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:05:32,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204579774] [2020-10-20 06:05:32,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:05:32,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:05:32,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:05:32,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:05:32,793 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 06:05:32,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204579774] [2020-10-20 06:05:32,794 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:05:32,794 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-20 06:05:32,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545429703] [2020-10-20 06:05:32,795 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 06:05:32,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:05:32,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 06:05:32,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-20 06:05:32,796 INFO L87 Difference]: Start difference. First operand 149 states and 165 transitions. Second operand 6 states. [2020-10-20 06:05:33,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:05:33,120 INFO L93 Difference]: Finished difference Result 191 states and 205 transitions. [2020-10-20 06:05:33,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 06:05:33,121 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-10-20 06:05:33,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:05:33,123 INFO L225 Difference]: With dead ends: 191 [2020-10-20 06:05:33,123 INFO L226 Difference]: Without dead ends: 191 [2020-10-20 06:05:33,124 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 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 06:05:33,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-10-20 06:05:33,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 148. [2020-10-20 06:05:33,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-10-20 06:05:33,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 161 transitions. [2020-10-20 06:05:33,133 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 161 transitions. Word has length 21 [2020-10-20 06:05:33,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:05:33,134 INFO L481 AbstractCegarLoop]: Abstraction has 148 states and 161 transitions. [2020-10-20 06:05:33,134 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 06:05:33,134 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 161 transitions. [2020-10-20 06:05:33,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-20 06:05:33,135 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:05:33,135 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] [2020-10-20 06:05:33,135 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-20 06:05:33,135 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-20 06:05:33,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:05:33,136 INFO L82 PathProgramCache]: Analyzing trace with hash 2072080786, now seen corresponding path program 1 times [2020-10-20 06:05:33,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:05:33,136 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633584664] [2020-10-20 06:05:33,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:05:33,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:05:33,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:05:33,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:05:33,335 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 06:05:33,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633584664] [2020-10-20 06:05:33,336 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:05:33,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-20 06:05:33,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142981878] [2020-10-20 06:05:33,337 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-20 06:05:33,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:05:33,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-20 06:05:33,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-20 06:05:33,338 INFO L87 Difference]: Start difference. First operand 148 states and 161 transitions. Second operand 7 states. [2020-10-20 06:05:33,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:05:33,754 INFO L93 Difference]: Finished difference Result 200 states and 219 transitions. [2020-10-20 06:05:33,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-20 06:05:33,755 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-10-20 06:05:33,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:05:33,756 INFO L225 Difference]: With dead ends: 200 [2020-10-20 06:05:33,756 INFO L226 Difference]: Without dead ends: 200 [2020-10-20 06:05:33,757 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-20 06:05:33,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-10-20 06:05:33,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 153. [2020-10-20 06:05:33,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-20 06:05:33,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 166 transitions. [2020-10-20 06:05:33,766 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 166 transitions. Word has length 24 [2020-10-20 06:05:33,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:05:33,767 INFO L481 AbstractCegarLoop]: Abstraction has 153 states and 166 transitions. [2020-10-20 06:05:33,767 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-20 06:05:33,767 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 166 transitions. [2020-10-20 06:05:33,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-20 06:05:33,771 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:05:33,772 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] [2020-10-20 06:05:33,772 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-20 06:05:33,773 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-20 06:05:33,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:05:33,777 INFO L82 PathProgramCache]: Analyzing trace with hash -222321507, now seen corresponding path program 1 times [2020-10-20 06:05:33,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:05:33,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808782756] [2020-10-20 06:05:33,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:05:33,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:05:33,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:05:33,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:05:33,950 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 06:05:33,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808782756] [2020-10-20 06:05:33,951 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:05:33,951 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-20 06:05:33,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395217854] [2020-10-20 06:05:33,952 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-20 06:05:33,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:05:33,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-20 06:05:33,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-20 06:05:33,953 INFO L87 Difference]: Start difference. First operand 153 states and 166 transitions. Second operand 10 states. [2020-10-20 06:05:34,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:05:34,561 INFO L93 Difference]: Finished difference Result 152 states and 165 transitions. [2020-10-20 06:05:34,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-20 06:05:34,562 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 23 [2020-10-20 06:05:34,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:05:34,564 INFO L225 Difference]: With dead ends: 152 [2020-10-20 06:05:34,564 INFO L226 Difference]: Without dead ends: 152 [2020-10-20 06:05:34,564 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-10-20 06:05:34,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-10-20 06:05:34,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2020-10-20 06:05:34,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-10-20 06:05:34,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 165 transitions. [2020-10-20 06:05:34,569 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 165 transitions. Word has length 23 [2020-10-20 06:05:34,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:05:34,570 INFO L481 AbstractCegarLoop]: Abstraction has 152 states and 165 transitions. [2020-10-20 06:05:34,570 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-20 06:05:34,570 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 165 transitions. [2020-10-20 06:05:34,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-20 06:05:34,571 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:05:34,571 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] [2020-10-20 06:05:34,571 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-20 06:05:34,572 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-20 06:05:34,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:05:34,572 INFO L82 PathProgramCache]: Analyzing trace with hash -222321506, now seen corresponding path program 1 times [2020-10-20 06:05:34,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:05:34,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265335836] [2020-10-20 06:05:34,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:05:34,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:05:34,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:05:34,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:05:34,729 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 06:05:34,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265335836] [2020-10-20 06:05:34,730 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:05:34,730 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-20 06:05:34,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435927439] [2020-10-20 06:05:34,731 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-20 06:05:34,731 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:05:34,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-20 06:05:34,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-20 06:05:34,732 INFO L87 Difference]: Start difference. First operand 152 states and 165 transitions. Second operand 11 states. [2020-10-20 06:05:35,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:05:35,657 INFO L93 Difference]: Finished difference Result 166 states and 183 transitions. [2020-10-20 06:05:35,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-20 06:05:35,660 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 23 [2020-10-20 06:05:35,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:05:35,662 INFO L225 Difference]: With dead ends: 166 [2020-10-20 06:05:35,662 INFO L226 Difference]: Without dead ends: 166 [2020-10-20 06:05:35,662 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2020-10-20 06:05:35,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-10-20 06:05:35,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 156. [2020-10-20 06:05:35,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-20 06:05:35,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 173 transitions. [2020-10-20 06:05:35,668 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 173 transitions. Word has length 23 [2020-10-20 06:05:35,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:05:35,669 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 173 transitions. [2020-10-20 06:05:35,669 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-20 06:05:35,669 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 173 transitions. [2020-10-20 06:05:35,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-20 06:05:35,670 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:05:35,670 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:05:35,671 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-20 06:05:35,671 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-20 06:05:35,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:05:35,672 INFO L82 PathProgramCache]: Analyzing trace with hash -1988184137, now seen corresponding path program 1 times [2020-10-20 06:05:35,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:05:35,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729325762] [2020-10-20 06:05:35,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:05:35,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:05:35,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:05:35,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:05:35,776 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 06:05:35,776 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729325762] [2020-10-20 06:05:35,776 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965377066] [2020-10-20 06:05:35,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:05:35,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:05:35,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 19 conjunts are in the unsatisfiable core [2020-10-20 06:05:35,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:05:35,966 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-10-20 06:05:35,967 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:05:35,977 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:05:35,981 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-10-20 06:05:35,981 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 06:05:35,992 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:05:35,993 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:05:35,993 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:23, output treesize:15 [2020-10-20 06:05:36,023 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 21 [2020-10-20 06:05:36,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 06:05:36,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 06:05:36,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 06:05:36,034 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 20 [2020-10-20 06:05:36,036 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 06:05:36,041 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:05:36,042 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:05:36,052 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:05:36,056 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 21 [2020-10-20 06:05:36,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 06:05:36,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 06:05:36,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 06:05:36,066 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 20 [2020-10-20 06:05:36,067 INFO L545 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-10-20 06:05:36,071 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:05:36,071 INFO L545 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:05:36,080 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:05:36,080 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:05:36,081 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:51, output treesize:33 [2020-10-20 06:05:36,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 06:05:36,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 06:05:36,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 06:05:36,144 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2020-10-20 06:05:36,146 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:05:36,157 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:05:36,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 06:05:36,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 06:05:36,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 06:05:36,171 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2020-10-20 06:05:36,172 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 06:05:36,181 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:05:36,181 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:05:36,182 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:71, output treesize:33 [2020-10-20 06:05:36,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 06:05:36,224 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 10 [2020-10-20 06:05:36,226 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:05:36,233 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:05:36,240 INFO L350 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2020-10-20 06:05:36,240 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 10 [2020-10-20 06:05:36,242 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 06:05:36,246 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:05:36,247 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:05:36,247 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:47, output treesize:7 [2020-10-20 06:05:36,253 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 06:05:36,254 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:05:36,254 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-20 06:05:36,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334295386] [2020-10-20 06:05:36,255 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-20 06:05:36,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:05:36,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-20 06:05:36,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-20 06:05:36,256 INFO L87 Difference]: Start difference. First operand 156 states and 173 transitions. Second operand 9 states. [2020-10-20 06:05:36,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:05:36,780 INFO L93 Difference]: Finished difference Result 205 states and 228 transitions. [2020-10-20 06:05:36,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-20 06:05:36,781 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2020-10-20 06:05:36,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:05:36,783 INFO L225 Difference]: With dead ends: 205 [2020-10-20 06:05:36,784 INFO L226 Difference]: Without dead ends: 205 [2020-10-20 06:05:36,784 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 28 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2020-10-20 06:05:36,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2020-10-20 06:05:36,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 163. [2020-10-20 06:05:36,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-20 06:05:36,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 181 transitions. [2020-10-20 06:05:36,790 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 181 transitions. Word has length 29 [2020-10-20 06:05:36,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:05:36,790 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 181 transitions. [2020-10-20 06:05:36,790 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-20 06:05:36,790 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 181 transitions. [2020-10-20 06:05:36,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-20 06:05:36,791 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:05:36,792 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, 1, 1, 1, 1, 1, 1] [2020-10-20 06:05:37,003 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-10-20 06:05:37,004 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-20 06:05:37,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:05:37,005 INFO L82 PathProgramCache]: Analyzing trace with hash -1109240489, now seen corresponding path program 1 times [2020-10-20 06:05:37,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:05:37,006 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651007505] [2020-10-20 06:05:37,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:05:37,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:05:37,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:05:37,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:05:37,111 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 06:05:37,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651007505] [2020-10-20 06:05:37,112 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:05:37,112 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-20 06:05:37,112 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559394394] [2020-10-20 06:05:37,113 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 06:05:37,113 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:05:37,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 06:05:37,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-20 06:05:37,114 INFO L87 Difference]: Start difference. First operand 163 states and 181 transitions. Second operand 6 states. [2020-10-20 06:05:37,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:05:37,455 INFO L93 Difference]: Finished difference Result 166 states and 182 transitions. [2020-10-20 06:05:37,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 06:05:37,455 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2020-10-20 06:05:37,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:05:37,457 INFO L225 Difference]: With dead ends: 166 [2020-10-20 06:05:37,458 INFO L226 Difference]: Without dead ends: 166 [2020-10-20 06:05:37,458 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-20 06:05:37,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-10-20 06:05:37,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 162. [2020-10-20 06:05:37,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-20 06:05:37,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 178 transitions. [2020-10-20 06:05:37,472 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 178 transitions. Word has length 31 [2020-10-20 06:05:37,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:05:37,472 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 178 transitions. [2020-10-20 06:05:37,473 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 06:05:37,473 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 178 transitions. [2020-10-20 06:05:37,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-20 06:05:37,474 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:05:37,474 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, 1, 1, 1, 1, 1] [2020-10-20 06:05:37,474 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-20 06:05:37,475 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-20 06:05:37,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:05:37,475 INFO L82 PathProgramCache]: Analyzing trace with hash 2107320774, now seen corresponding path program 1 times [2020-10-20 06:05:37,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:05:37,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357348302] [2020-10-20 06:05:37,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:05:37,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:05:37,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:05:37,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:05:37,562 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 06:05:37,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357348302] [2020-10-20 06:05:37,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:05:37,564 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 06:05:37,566 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796524754] [2020-10-20 06:05:37,566 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 06:05:37,566 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:05:37,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 06:05:37,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-20 06:05:37,567 INFO L87 Difference]: Start difference. First operand 162 states and 178 transitions. Second operand 6 states. [2020-10-20 06:05:38,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:05:38,115 INFO L93 Difference]: Finished difference Result 259 states and 287 transitions. [2020-10-20 06:05:38,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 06:05:38,116 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2020-10-20 06:05:38,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:05:38,118 INFO L225 Difference]: With dead ends: 259 [2020-10-20 06:05:38,118 INFO L226 Difference]: Without dead ends: 259 [2020-10-20 06:05:38,119 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-20 06:05:38,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2020-10-20 06:05:38,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 161. [2020-10-20 06:05:38,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-20 06:05:38,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 177 transitions. [2020-10-20 06:05:38,133 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 177 transitions. Word has length 30 [2020-10-20 06:05:38,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:05:38,133 INFO L481 AbstractCegarLoop]: Abstraction has 161 states and 177 transitions. [2020-10-20 06:05:38,133 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 06:05:38,133 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 177 transitions. [2020-10-20 06:05:38,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-20 06:05:38,136 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:05:38,136 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, 1, 1, 1, 1, 1] [2020-10-20 06:05:38,137 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-20 06:05:38,137 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-20 06:05:38,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:05:38,137 INFO L82 PathProgramCache]: Analyzing trace with hash 2107320773, now seen corresponding path program 1 times [2020-10-20 06:05:38,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:05:38,138 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150565360] [2020-10-20 06:05:38,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:05:38,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:05:38,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:05:38,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:05:38,203 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 06:05:38,204 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150565360] [2020-10-20 06:05:38,204 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:05:38,204 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 06:05:38,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484364777] [2020-10-20 06:05:38,205 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 06:05:38,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:05:38,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 06:05:38,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-20 06:05:38,205 INFO L87 Difference]: Start difference. First operand 161 states and 177 transitions. Second operand 6 states. [2020-10-20 06:05:38,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:05:38,664 INFO L93 Difference]: Finished difference Result 231 states and 258 transitions. [2020-10-20 06:05:38,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 06:05:38,667 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2020-10-20 06:05:38,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:05:38,669 INFO L225 Difference]: With dead ends: 231 [2020-10-20 06:05:38,669 INFO L226 Difference]: Without dead ends: 231 [2020-10-20 06:05:38,669 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 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 06:05:38,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2020-10-20 06:05:38,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 160. [2020-10-20 06:05:38,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-10-20 06:05:38,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 176 transitions. [2020-10-20 06:05:38,674 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 176 transitions. Word has length 30 [2020-10-20 06:05:38,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:05:38,674 INFO L481 AbstractCegarLoop]: Abstraction has 160 states and 176 transitions. [2020-10-20 06:05:38,674 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 06:05:38,674 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 176 transitions. [2020-10-20 06:05:38,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-20 06:05:38,675 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:05:38,675 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, 1, 1, 1, 1, 1, 1] [2020-10-20 06:05:38,675 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-20 06:05:38,676 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-20 06:05:38,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:05:38,676 INFO L82 PathProgramCache]: Analyzing trace with hash 639963670, now seen corresponding path program 1 times [2020-10-20 06:05:38,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:05:38,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738441936] [2020-10-20 06:05:38,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:05:38,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:05:38,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:05:38,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:05:38,740 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 06:05:38,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738441936] [2020-10-20 06:05:38,740 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:05:38,740 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 06:05:38,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774370395] [2020-10-20 06:05:38,741 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 06:05:38,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:05:38,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 06:05:38,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:05:38,742 INFO L87 Difference]: Start difference. First operand 160 states and 176 transitions. Second operand 5 states. [2020-10-20 06:05:39,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:05:39,003 INFO L93 Difference]: Finished difference Result 162 states and 176 transitions. [2020-10-20 06:05:39,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 06:05:39,003 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-10-20 06:05:39,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:05:39,005 INFO L225 Difference]: With dead ends: 162 [2020-10-20 06:05:39,005 INFO L226 Difference]: Without dead ends: 162 [2020-10-20 06:05:39,005 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-20 06:05:39,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-10-20 06:05:39,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 159. [2020-10-20 06:05:39,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-10-20 06:05:39,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 173 transitions. [2020-10-20 06:05:39,012 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 173 transitions. Word has length 31 [2020-10-20 06:05:39,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:05:39,013 INFO L481 AbstractCegarLoop]: Abstraction has 159 states and 173 transitions. [2020-10-20 06:05:39,013 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 06:05:39,013 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 173 transitions. [2020-10-20 06:05:39,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-20 06:05:39,017 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:05:39,017 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:05:39,017 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-20 06:05:39,018 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-20 06:05:39,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:05:39,018 INFO L82 PathProgramCache]: Analyzing trace with hash 1851483541, now seen corresponding path program 1 times [2020-10-20 06:05:39,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:05:39,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281443829] [2020-10-20 06:05:39,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:05:39,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:05:39,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:05:39,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:05:39,136 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 06:05:39,139 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281443829] [2020-10-20 06:05:39,139 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:05:39,139 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 06:05:39,140 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624387441] [2020-10-20 06:05:39,143 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 06:05:39,143 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:05:39,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 06:05:39,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:05:39,144 INFO L87 Difference]: Start difference. First operand 159 states and 173 transitions. Second operand 5 states. [2020-10-20 06:05:39,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:05:39,419 INFO L93 Difference]: Finished difference Result 159 states and 171 transitions. [2020-10-20 06:05:39,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 06:05:39,420 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-10-20 06:05:39,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:05:39,421 INFO L225 Difference]: With dead ends: 159 [2020-10-20 06:05:39,421 INFO L226 Difference]: Without dead ends: 159 [2020-10-20 06:05:39,422 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-20 06:05:39,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-20 06:05:39,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 158. [2020-10-20 06:05:39,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-10-20 06:05:39,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 170 transitions. [2020-10-20 06:05:39,427 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 170 transitions. Word has length 34 [2020-10-20 06:05:39,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:05:39,427 INFO L481 AbstractCegarLoop]: Abstraction has 158 states and 170 transitions. [2020-10-20 06:05:39,427 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 06:05:39,427 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 170 transitions. [2020-10-20 06:05:39,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-20 06:05:39,428 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:05:39,428 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:05:39,429 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-20 06:05:39,429 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-20 06:05:39,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:05:39,429 INFO L82 PathProgramCache]: Analyzing trace with hash -2066827193, now seen corresponding path program 1 times [2020-10-20 06:05:39,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:05:39,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116511591] [2020-10-20 06:05:39,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:05:39,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:05:39,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:05:39,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:05:39,582 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 06:05:39,582 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116511591] [2020-10-20 06:05:39,582 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:05:39,582 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-20 06:05:39,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972490539] [2020-10-20 06:05:39,584 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-20 06:05:39,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:05:39,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-20 06:05:39,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-20 06:05:39,584 INFO L87 Difference]: Start difference. First operand 158 states and 170 transitions. Second operand 9 states. [2020-10-20 06:05:40,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:05:40,084 INFO L93 Difference]: Finished difference Result 158 states and 170 transitions. [2020-10-20 06:05:40,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-20 06:05:40,084 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 34 [2020-10-20 06:05:40,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:05:40,085 INFO L225 Difference]: With dead ends: 158 [2020-10-20 06:05:40,085 INFO L226 Difference]: Without dead ends: 158 [2020-10-20 06:05:40,086 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-20 06:05:40,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-10-20 06:05:40,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 157. [2020-10-20 06:05:40,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-10-20 06:05:40,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 169 transitions. [2020-10-20 06:05:40,091 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 169 transitions. Word has length 34 [2020-10-20 06:05:40,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:05:40,092 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 169 transitions. [2020-10-20 06:05:40,092 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-20 06:05:40,092 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 169 transitions. [2020-10-20 06:05:40,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-20 06:05:40,093 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:05:40,093 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:05:40,093 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-20 06:05:40,093 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-20 06:05:40,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:05:40,094 INFO L82 PathProgramCache]: Analyzing trace with hash -2066827192, now seen corresponding path program 1 times [2020-10-20 06:05:40,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:05:40,094 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846806876] [2020-10-20 06:05:40,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:05:40,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:05:40,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:05:40,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:05:40,256 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 06:05:40,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846806876] [2020-10-20 06:05:40,257 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:05:40,257 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-20 06:05:40,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270131124] [2020-10-20 06:05:40,258 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-20 06:05:40,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:05:40,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-20 06:05:40,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-20 06:05:40,258 INFO L87 Difference]: Start difference. First operand 157 states and 169 transitions. Second operand 10 states. [2020-10-20 06:05:40,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:05:40,918 INFO L93 Difference]: Finished difference Result 154 states and 166 transitions. [2020-10-20 06:05:40,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-20 06:05:40,919 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 34 [2020-10-20 06:05:40,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:05:40,920 INFO L225 Difference]: With dead ends: 154 [2020-10-20 06:05:40,920 INFO L226 Difference]: Without dead ends: 154 [2020-10-20 06:05:40,921 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2020-10-20 06:05:40,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-10-20 06:05:40,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 135. [2020-10-20 06:05:40,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-10-20 06:05:40,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 145 transitions. [2020-10-20 06:05:40,924 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 145 transitions. Word has length 34 [2020-10-20 06:05:40,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:05:40,925 INFO L481 AbstractCegarLoop]: Abstraction has 135 states and 145 transitions. [2020-10-20 06:05:40,925 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-20 06:05:40,925 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 145 transitions. [2020-10-20 06:05:40,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-20 06:05:40,925 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:05:40,926 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:05:40,926 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-20 06:05:40,926 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-20 06:05:40,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:05:40,926 INFO L82 PathProgramCache]: Analyzing trace with hash -1739691464, now seen corresponding path program 1 times [2020-10-20 06:05:40,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:05:40,927 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499250654] [2020-10-20 06:05:40,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:05:40,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:05:40,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:05:40,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:05:40,993 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 06:05:40,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499250654] [2020-10-20 06:05:40,994 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:05:40,994 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 06:05:40,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662823075] [2020-10-20 06:05:40,994 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:05:40,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:05:40,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:05:40,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:05:40,995 INFO L87 Difference]: Start difference. First operand 135 states and 145 transitions. Second operand 4 states. [2020-10-20 06:05:41,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:05:41,182 INFO L93 Difference]: Finished difference Result 137 states and 147 transitions. [2020-10-20 06:05:41,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:05:41,183 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2020-10-20 06:05:41,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:05:41,184 INFO L225 Difference]: With dead ends: 137 [2020-10-20 06:05:41,184 INFO L226 Difference]: Without dead ends: 137 [2020-10-20 06:05:41,184 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:05:41,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-10-20 06:05:41,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2020-10-20 06:05:41,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-20 06:05:41,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 147 transitions. [2020-10-20 06:05:41,188 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 147 transitions. Word has length 35 [2020-10-20 06:05:41,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:05:41,189 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 147 transitions. [2020-10-20 06:05:41,189 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:05:41,189 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 147 transitions. [2020-10-20 06:05:41,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-20 06:05:41,189 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:05:41,190 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:05:41,190 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-20 06:05:41,190 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-20 06:05:41,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:05:41,190 INFO L82 PathProgramCache]: Analyzing trace with hash 1104380138, now seen corresponding path program 1 times [2020-10-20 06:05:41,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:05:41,191 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454044165] [2020-10-20 06:05:41,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:05:41,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:05:41,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:05:41,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:05:41,393 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 06:05:41,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454044165] [2020-10-20 06:05:41,394 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:05:41,394 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-20 06:05:41,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584658836] [2020-10-20 06:05:41,397 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-20 06:05:41,397 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:05:41,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-20 06:05:41,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2020-10-20 06:05:41,398 INFO L87 Difference]: Start difference. First operand 137 states and 147 transitions. Second operand 13 states. [2020-10-20 06:05:42,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:05:42,260 INFO L93 Difference]: Finished difference Result 160 states and 171 transitions. [2020-10-20 06:05:42,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-20 06:05:42,261 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 36 [2020-10-20 06:05:42,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:05:42,262 INFO L225 Difference]: With dead ends: 160 [2020-10-20 06:05:42,263 INFO L226 Difference]: Without dead ends: 160 [2020-10-20 06:05:42,263 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=162, Invalid=390, Unknown=0, NotChecked=0, Total=552 [2020-10-20 06:05:42,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-10-20 06:05:42,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 144. [2020-10-20 06:05:42,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-20 06:05:42,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 154 transitions. [2020-10-20 06:05:42,269 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 154 transitions. Word has length 36 [2020-10-20 06:05:42,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:05:42,270 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 154 transitions. [2020-10-20 06:05:42,270 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-20 06:05:42,271 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 154 transitions. [2020-10-20 06:05:42,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-20 06:05:42,272 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:05:42,272 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:05:42,272 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-20 06:05:42,273 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-20 06:05:42,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:05:42,273 INFO L82 PathProgramCache]: Analyzing trace with hash 197711365, now seen corresponding path program 1 times [2020-10-20 06:05:42,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:05:42,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921162423] [2020-10-20 06:05:42,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:05:42,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:05:42,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:05:42,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:05:42,409 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:05:42,409 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921162423] [2020-10-20 06:05:42,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [679950892] [2020-10-20 06:05:42,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:05:42,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:05:42,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-20 06:05:42,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:05:42,576 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-10-20 06:05:42,576 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:05:42,579 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:05:42,580 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:05:42,580 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:9 [2020-10-20 06:05:42,588 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2020-10-20 06:05:42,589 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:05:42,592 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:05:42,593 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:05:42,593 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:3 [2020-10-20 06:05:42,622 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 06:05:42,623 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-20 06:05:42,623 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 10 [2020-10-20 06:05:42,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105433252] [2020-10-20 06:05:42,623 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:05:42,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:05:42,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:05:42,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-20 06:05:42,625 INFO L87 Difference]: Start difference. First operand 144 states and 154 transitions. Second operand 4 states. [2020-10-20 06:05:42,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:05:42,750 INFO L93 Difference]: Finished difference Result 153 states and 163 transitions. [2020-10-20 06:05:42,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:05:42,751 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2020-10-20 06:05:42,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:05:42,752 INFO L225 Difference]: With dead ends: 153 [2020-10-20 06:05:42,752 INFO L226 Difference]: Without dead ends: 153 [2020-10-20 06:05:42,752 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-10-20 06:05:42,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-10-20 06:05:42,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 147. [2020-10-20 06:05:42,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-10-20 06:05:42,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 157 transitions. [2020-10-20 06:05:42,758 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 157 transitions. Word has length 37 [2020-10-20 06:05:42,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:05:42,759 INFO L481 AbstractCegarLoop]: Abstraction has 147 states and 157 transitions. [2020-10-20 06:05:42,759 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:05:42,759 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 157 transitions. [2020-10-20 06:05:42,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-20 06:05:42,760 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:05:42,761 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:05:42,973 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-10-20 06:05:42,973 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-20 06:05:42,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:05:42,974 INFO L82 PathProgramCache]: Analyzing trace with hash 222286264, now seen corresponding path program 1 times [2020-10-20 06:05:42,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:05:42,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267095317] [2020-10-20 06:05:42,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:05:42,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:05:43,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:05:43,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:05:43,129 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 06:05:43,129 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267095317] [2020-10-20 06:05:43,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2142635651] [2020-10-20 06:05:43,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:05:43,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:05:43,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 19 conjunts are in the unsatisfiable core [2020-10-20 06:05:43,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:05:43,303 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-10-20 06:05:43,303 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:05:43,312 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:05:43,315 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-10-20 06:05:43,316 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 06:05:43,320 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:05:43,320 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:05:43,320 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:23, output treesize:15 [2020-10-20 06:05:43,331 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 21 [2020-10-20 06:05:43,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 06:05:43,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 06:05:43,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 06:05:43,341 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 20 [2020-10-20 06:05:43,342 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 06:05:43,346 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:05:43,347 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:05:43,356 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:05:43,359 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 21 [2020-10-20 06:05:43,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 06:05:43,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 06:05:43,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 06:05:43,368 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 20 [2020-10-20 06:05:43,369 INFO L545 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-10-20 06:05:43,374 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:05:43,374 INFO L545 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:05:43,382 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:05:43,382 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:05:43,382 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:51, output treesize:33 [2020-10-20 06:05:43,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 06:05:43,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 06:05:43,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 06:05:43,410 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2020-10-20 06:05:43,411 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:05:43,422 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:05:43,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 06:05:43,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 06:05:43,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 06:05:43,429 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2020-10-20 06:05:43,430 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 06:05:43,438 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:05:43,439 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:05:43,439 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:71, output treesize:33 [2020-10-20 06:05:43,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 06:05:43,455 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 10 [2020-10-20 06:05:43,456 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:05:43,463 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:05:43,467 INFO L350 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2020-10-20 06:05:43,468 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 10 [2020-10-20 06:05:43,469 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 06:05:43,473 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:05:43,473 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:05:43,473 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:47, output treesize:7 [2020-10-20 06:05:43,482 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 06:05:43,483 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:05:43,483 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2020-10-20 06:05:43,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196792465] [2020-10-20 06:05:43,484 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-20 06:05:43,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:05:43,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-20 06:05:43,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-20 06:05:43,485 INFO L87 Difference]: Start difference. First operand 147 states and 157 transitions. Second operand 8 states. [2020-10-20 06:05:43,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:05:43,852 INFO L93 Difference]: Finished difference Result 157 states and 166 transitions. [2020-10-20 06:05:43,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-20 06:05:43,852 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 38 [2020-10-20 06:05:43,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:05:43,853 INFO L225 Difference]: With dead ends: 157 [2020-10-20 06:05:43,854 INFO L226 Difference]: Without dead ends: 157 [2020-10-20 06:05:43,854 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 38 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-20 06:05:43,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-10-20 06:05:43,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 153. [2020-10-20 06:05:43,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-20 06:05:43,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 163 transitions. [2020-10-20 06:05:43,858 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 163 transitions. Word has length 38 [2020-10-20 06:05:43,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:05:43,858 INFO L481 AbstractCegarLoop]: Abstraction has 153 states and 163 transitions. [2020-10-20 06:05:43,858 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-20 06:05:43,858 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 163 transitions. [2020-10-20 06:05:43,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-20 06:05:43,859 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:05:43,859 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:05:44,067 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2020-10-20 06:05:44,068 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-20 06:05:44,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:05:44,069 INFO L82 PathProgramCache]: Analyzing trace with hash -1699060749, now seen corresponding path program 1 times [2020-10-20 06:05:44,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:05:44,069 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342506465] [2020-10-20 06:05:44,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:05:44,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:05:44,086 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:05:44,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:05:44,099 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:05:44,135 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:05:44,135 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 06:05:44,136 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-20 06:05:44,175 WARN L417 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2020-10-20 06:05:44,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 06:05:44 BoogieIcfgContainer [2020-10-20 06:05:44,217 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 06:05:44,217 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 06:05:44,218 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 06:05:44,218 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 06:05:44,219 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:05:27" (3/4) ... [2020-10-20 06:05:44,222 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 06:05:44,223 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 06:05:44,224 INFO L168 Benchmark]: Toolchain (without parser) took 17820.70 ms. Allocated memory was 34.1 MB in the beginning and 113.2 MB in the end (delta: 79.2 MB). Free memory was 9.6 MB in the beginning and 21.6 MB in the end (delta: -12.0 MB). Peak memory consumption was 67.2 MB. Max. memory is 14.3 GB. [2020-10-20 06:05:44,225 INFO L168 Benchmark]: CDTParser took 0.46 ms. Allocated memory is still 33.0 MB. Free memory was 18.0 MB in the beginning and 18.0 MB in the end (delta: 41.7 kB). Peak memory consumption was 41.7 kB. Max. memory is 14.3 GB. [2020-10-20 06:05:44,225 INFO L168 Benchmark]: CACSL2BoogieTranslator took 661.85 ms. Allocated memory was 34.1 MB in the beginning and 45.6 MB in the end (delta: 11.5 MB). Free memory was 8.7 MB in the beginning and 18.1 MB in the end (delta: -9.3 MB). Peak memory consumption was 8.7 MB. Max. memory is 14.3 GB. [2020-10-20 06:05:44,226 INFO L168 Benchmark]: Boogie Preprocessor took 77.52 ms. Allocated memory is still 45.6 MB. Free memory was 18.1 MB in the beginning and 14.7 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 14.3 GB. [2020-10-20 06:05:44,226 INFO L168 Benchmark]: RCFGBuilder took 848.34 ms. Allocated memory was 45.6 MB in the beginning and 49.3 MB in the end (delta: 3.7 MB). Free memory was 14.7 MB in the beginning and 27.4 MB in the end (delta: -12.7 MB). Peak memory consumption was 7.9 MB. Max. memory is 14.3 GB. [2020-10-20 06:05:44,226 INFO L168 Benchmark]: TraceAbstraction took 16217.07 ms. Allocated memory was 49.3 MB in the beginning and 113.2 MB in the end (delta: 64.0 MB). Free memory was 27.0 MB in the beginning and 21.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 69.3 MB. Max. memory is 14.3 GB. [2020-10-20 06:05:44,227 INFO L168 Benchmark]: Witness Printer took 5.42 ms. Allocated memory is still 113.2 MB. Free memory is still 21.6 MB. There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 06:05:44,233 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.46 ms. Allocated memory is still 33.0 MB. Free memory was 18.0 MB in the beginning and 18.0 MB in the end (delta: 41.7 kB). Peak memory consumption was 41.7 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 661.85 ms. Allocated memory was 34.1 MB in the beginning and 45.6 MB in the end (delta: 11.5 MB). Free memory was 8.7 MB in the beginning and 18.1 MB in the end (delta: -9.3 MB). Peak memory consumption was 8.7 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 77.52 ms. Allocated memory is still 45.6 MB. Free memory was 18.1 MB in the beginning and 14.7 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 14.3 GB. * RCFGBuilder took 848.34 ms. Allocated memory was 45.6 MB in the beginning and 49.3 MB in the end (delta: 3.7 MB). Free memory was 14.7 MB in the beginning and 27.4 MB in the end (delta: -12.7 MB). Peak memory consumption was 7.9 MB. Max. memory is 14.3 GB. * TraceAbstraction took 16217.07 ms. Allocated memory was 49.3 MB in the beginning and 113.2 MB in the end (delta: 64.0 MB). Free memory was 27.0 MB in the beginning and 21.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 69.3 MB. Max. memory is 14.3 GB. * Witness Printer took 5.42 ms. Allocated memory is still 113.2 MB. Free memory is still 21.6 MB. There was no memory consumed. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 996]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 996. Possible FailurePath: [L998] struct TSLL* null = malloc(sizeof(struct TSLL)); VAL [malloc(sizeof(struct TSLL))={-1:0}, null={-1:0}] [L999] null->next = ((void*)0) VAL [malloc(sizeof(struct TSLL))={-1:0}, null={-1:0}] [L1000] null->prev = ((void*)0) VAL [malloc(sizeof(struct TSLL))={-1:0}, null={-1:0}] [L1001] null->colour = BLACK VAL [malloc(sizeof(struct TSLL))={-1:0}, null={-1:0}] [L1003] struct TSLL* list = malloc(sizeof(struct TSLL)); VAL [list={1:0}, malloc(sizeof(struct TSLL))={-1:0}, malloc(sizeof(struct TSLL))={1:0}, null={-1:0}] [L1004] list->next = null VAL [list={1:0}, malloc(sizeof(struct TSLL))={-1:0}, malloc(sizeof(struct TSLL))={1:0}, null={-1:0}] [L1005] list->prev = null VAL [list={1:0}, malloc(sizeof(struct TSLL))={-1:0}, malloc(sizeof(struct TSLL))={1:0}, null={-1:0}] [L1006] list->colour = BLACK VAL [list={1:0}, malloc(sizeof(struct TSLL))={-1:0}, malloc(sizeof(struct TSLL))={1:0}, null={-1:0}] [L1008] struct TSLL* end = list; VAL [end={1:0}, list={1:0}, malloc(sizeof(struct TSLL))={-1:0}, malloc(sizeof(struct TSLL))={1:0}, null={-1:0}] [L1011] COND FALSE !(__VERIFIER_nondet_int()) [L1037] end = null [L1038] end = list VAL [end={1:0}, list={1:0}, malloc(sizeof(struct TSLL))={-1:0}, malloc(sizeof(struct TSLL))={1:0}, null={-1:0}] [L1041] COND FALSE !(!(null != end)) VAL [end={1:0}, list={1:0}, malloc(sizeof(struct TSLL))={-1:0}, malloc(sizeof(struct TSLL))={1:0}, null={-1:0}] [L1042] EXPR end->colour VAL [end={1:0}, end->colour=1, list={1:0}, malloc(sizeof(struct TSLL))={-1:0}, malloc(sizeof(struct TSLL))={1:0}, null={-1:0}] [L1042] COND FALSE !(!(BLACK == end->colour)) [L1043] COND TRUE null != end VAL [end={1:0}, list={1:0}, malloc(sizeof(struct TSLL))={-1:0}, malloc(sizeof(struct TSLL))={1:0}, null={-1:0}] [L1045] EXPR end->colour VAL [end={1:0}, end->colour=1, list={1:0}, malloc(sizeof(struct TSLL))={-1:0}, malloc(sizeof(struct TSLL))={1:0}, null={-1:0}] [L1045] COND FALSE !(RED == end->colour) [L1052] EXPR end->next VAL [end={1:0}, end->next={-1:0}, list={1:0}, malloc(sizeof(struct TSLL))={-1:0}, malloc(sizeof(struct TSLL))={1:0}, null={-1:0}] [L1052] end = end->next [L1043] COND FALSE !(null != end) VAL [end={-1:0}, list={1:0}, malloc(sizeof(struct TSLL))={-1:0}, malloc(sizeof(struct TSLL))={1:0}, null={-1:0}] [L1056] COND TRUE null != list VAL [end={-1:0}, list={1:0}, malloc(sizeof(struct TSLL))={-1:0}, malloc(sizeof(struct TSLL))={1:0}, null={-1:0}] [L1058] EXPR list->colour VAL [end={-1:0}, list={1:0}, list->colour=1, malloc(sizeof(struct TSLL))={-1:0}, malloc(sizeof(struct TSLL))={1:0}, null={-1:0}] [L1058] COND FALSE !(RED == list->colour) [L1067] EXPR list->next VAL [end={-1:0}, list={1:0}, list->next={-1:0}, malloc(sizeof(struct TSLL))={-1:0}, malloc(sizeof(struct TSLL))={1:0}, null={-1:0}] [L1067] end = list->next [L1068] free(list) VAL [end={-1:0}, list={1:0}, malloc(sizeof(struct TSLL))={-1:0}, malloc(sizeof(struct TSLL))={1:0}, null={-1:0}] [L1068] free(list) VAL [end={-1:0}, list={1:0}, malloc(sizeof(struct TSLL))={-1:0}, malloc(sizeof(struct TSLL))={1:0}, null={-1:0}] [L1068] free(list) [L1069] list = end VAL [end={-1:0}, list={-1:0}, malloc(sizeof(struct TSLL))={-1:0}, malloc(sizeof(struct TSLL))={1:0}, null={-1:0}] [L1056] COND FALSE !(null != list) VAL [end={-1:0}, list={-1:0}, malloc(sizeof(struct TSLL))={-1:0}, malloc(sizeof(struct TSLL))={1:0}, null={-1:0}] [L1073] return 0; VAL [\result=0, end={-1:0}, list={-1:0}, malloc(sizeof(struct TSLL))={-1:0}, malloc(sizeof(struct TSLL))={1:0}, null={-1:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 174 locations, 71 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 16.0s, OverallIterations: 25, TraceHistogramMax: 2, AutomataDifference: 10.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2491 SDtfs, 2916 SDslu, 4217 SDs, 0 SdLazy, 9138 SolverSat, 440 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 344 GetRequests, 156 SyntacticMatches, 9 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 2.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=174occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 24 MinimizatonAttempts, 579 StatesRemovedByMinimization, 21 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 741 NumberOfCodeBlocks, 741 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 675 ConstructedInterpolants, 0 QuantifiedInterpolants, 142262 SizeOfPredicates, 23 NumberOfNonLiveVariables, 596 ConjunctsInSsa, 41 ConjunctsInUnsatCore, 27 InterpolantComputations, 22 PerfectInterpolantSequences, 8/13 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... ### Bit-precise run ### This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 06:05:46,278 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 06:05:46,281 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 06:05:46,322 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 06:05:46,323 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 06:05:46,333 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 06:05:46,334 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 06:05:46,337 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 06:05:46,341 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 06:05:46,343 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 06:05:46,344 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 06:05:46,347 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 06:05:46,348 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 06:05:46,352 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 06:05:46,354 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 06:05:46,356 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 06:05:46,357 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 06:05:46,360 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 06:05:46,363 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 06:05:46,366 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 06:05:46,377 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 06:05:46,379 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 06:05:46,380 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 06:05:46,380 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 06:05:46,386 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 06:05:46,390 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 06:05:46,390 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 06:05:46,391 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 06:05:46,392 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 06:05:46,394 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 06:05:46,396 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 06:05:46,397 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 06:05:46,398 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 06:05:46,400 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 06:05:46,403 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 06:05:46,403 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 06:05:46,405 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 06:05:46,406 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 06:05:46,407 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 06:05:46,408 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 06:05:46,408 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 06:05:46,410 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2020-10-20 06:05:46,443 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 06:05:46,444 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 06:05:46,445 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 06:05:46,445 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 06:05:46,446 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 06:05:46,446 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 06:05:46,446 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 06:05:46,446 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 06:05:46,447 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 06:05:46,447 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 06:05:46,448 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 06:05:46,448 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-20 06:05:46,449 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-20 06:05:46,449 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-20 06:05:46,449 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 06:05:46,449 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-20 06:05:46,450 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-20 06:05:46,450 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-20 06:05:46,450 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 06:05:46,450 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 06:05:46,451 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 06:05:46,451 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 06:05:46,451 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 06:05:46,451 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 06:05:46,452 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 06:05:46,452 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 06:05:46,452 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 06:05:46,452 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-20 06:05:46,453 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-20 06:05:46,453 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 06:05:46,453 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-20 06:05:46,453 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 -> 9aa86be9eb0317030839433587db2b1c5b5e93d6 [2020-10-20 06:05:46,657 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 06:05:46,670 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 06:05:46,674 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 06:05:46,676 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 06:05:46,676 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 06:05:46,677 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i [2020-10-20 06:05:46,754 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b20a9b5ac/c71a501b0591437a89bebaeab39379a0/FLAG4d8671a01 [2020-10-20 06:05:47,251 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 06:05:47,252 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i [2020-10-20 06:05:47,264 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b20a9b5ac/c71a501b0591437a89bebaeab39379a0/FLAG4d8671a01 [2020-10-20 06:05:47,597 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b20a9b5ac/c71a501b0591437a89bebaeab39379a0 [2020-10-20 06:05:47,601 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 06:05:47,608 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-20 06:05:47,609 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 06:05:47,609 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 06:05:47,614 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 06:05:47,615 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:05:47" (1/1) ... [2020-10-20 06:05:47,620 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1707766f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:05:47, skipping insertion in model container [2020-10-20 06:05:47,620 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:05:47" (1/1) ... [2020-10-20 06:05:47,635 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 06:05:47,678 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 06:05:48,192 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:05:48,207 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 06:05:48,250 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:05:48,319 INFO L208 MainTranslator]: Completed translation [2020-10-20 06:05:48,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:05:48 WrapperNode [2020-10-20 06:05:48,320 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 06:05:48,320 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 06:05:48,320 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 06:05:48,321 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 06:05:48,335 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:05:48" (1/1) ... [2020-10-20 06:05:48,336 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:05:48" (1/1) ... [2020-10-20 06:05:48,356 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:05:48" (1/1) ... [2020-10-20 06:05:48,356 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:05:48" (1/1) ... [2020-10-20 06:05:48,408 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:05:48" (1/1) ... [2020-10-20 06:05:48,421 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:05:48" (1/1) ... [2020-10-20 06:05:48,431 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:05:48" (1/1) ... [2020-10-20 06:05:48,448 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 06:05:48,448 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 06:05:48,449 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 06:05:48,449 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 06:05:48,450 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:05:48" (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 06:05:48,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-20 06:05:48,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 06:05:48,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2020-10-20 06:05:48,558 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-20 06:05:48,559 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-20 06:05:48,559 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-20 06:05:48,559 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-20 06:05:48,560 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-20 06:05:48,560 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-20 06:05:48,560 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-20 06:05:48,560 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-20 06:05:48,561 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-20 06:05:48,561 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-20 06:05:48,562 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-20 06:05:48,562 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-20 06:05:48,562 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-20 06:05:48,562 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-20 06:05:48,562 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-20 06:05:48,562 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-20 06:05:48,562 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-20 06:05:48,563 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-20 06:05:48,563 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-20 06:05:48,563 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-20 06:05:48,564 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-20 06:05:48,564 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-20 06:05:48,565 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-20 06:05:48,565 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-20 06:05:48,565 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-20 06:05:48,565 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-20 06:05:48,566 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-20 06:05:48,566 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-20 06:05:48,566 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-20 06:05:48,566 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-20 06:05:48,566 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-20 06:05:48,566 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-20 06:05:48,566 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-20 06:05:48,567 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-20 06:05:48,567 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-20 06:05:48,567 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-20 06:05:48,569 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-20 06:05:48,569 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-20 06:05:48,569 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-20 06:05:48,570 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-20 06:05:48,570 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-20 06:05:48,571 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-20 06:05:48,571 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-20 06:05:48,572 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-20 06:05:48,572 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-20 06:05:48,572 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-20 06:05:48,572 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-20 06:05:48,572 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-20 06:05:48,573 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-20 06:05:48,573 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-20 06:05:48,573 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-20 06:05:48,573 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-20 06:05:48,573 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-20 06:05:48,573 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-20 06:05:48,574 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-20 06:05:48,574 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-20 06:05:48,574 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-20 06:05:48,574 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-20 06:05:48,574 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-20 06:05:48,575 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-20 06:05:48,576 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-20 06:05:48,576 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-20 06:05:48,576 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-20 06:05:48,576 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-20 06:05:48,576 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-20 06:05:48,576 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-20 06:05:48,577 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-20 06:05:48,578 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-20 06:05:48,578 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-20 06:05:48,579 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-20 06:05:48,579 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-20 06:05:48,580 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-20 06:05:48,580 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-20 06:05:48,580 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-20 06:05:48,580 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-20 06:05:48,580 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-20 06:05:48,580 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-20 06:05:48,580 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-20 06:05:48,580 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-20 06:05:48,581 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-20 06:05:48,581 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-20 06:05:48,581 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-20 06:05:48,581 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-20 06:05:48,581 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-20 06:05:48,581 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-20 06:05:48,581 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-20 06:05:48,582 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-20 06:05:48,582 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-20 06:05:48,582 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-20 06:05:48,582 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-20 06:05:48,582 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-20 06:05:48,582 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-20 06:05:48,582 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-20 06:05:48,582 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-20 06:05:48,583 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-20 06:05:48,595 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-20 06:05:48,596 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-20 06:05:48,596 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-20 06:05:48,596 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-20 06:05:48,596 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-20 06:05:48,596 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-20 06:05:48,596 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-20 06:05:48,597 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-20 06:05:48,597 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-20 06:05:48,597 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-20 06:05:48,597 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-20 06:05:48,598 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-20 06:05:48,598 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-20 06:05:48,598 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-20 06:05:48,598 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-20 06:05:48,598 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 06:05:48,599 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-20 06:05:48,599 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-20 06:05:48,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-20 06:05:48,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-10-20 06:05:48,599 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-20 06:05:48,600 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-20 06:05:48,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 06:05:48,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-20 06:05:48,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-20 06:05:48,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 06:05:48,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2020-10-20 06:05:48,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2020-10-20 06:05:48,601 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2020-10-20 06:05:49,644 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 06:05:49,645 INFO L298 CfgBuilder]: Removed 17 assume(true) statements. [2020-10-20 06:05:49,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:05:49 BoogieIcfgContainer [2020-10-20 06:05:49,647 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 06:05:49,649 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 06:05:49,649 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 06:05:49,654 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 06:05:49,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 06:05:47" (1/3) ... [2020-10-20 06:05:49,655 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@698ce4c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:05:49, skipping insertion in model container [2020-10-20 06:05:49,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:05:48" (2/3) ... [2020-10-20 06:05:49,656 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@698ce4c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:05:49, skipping insertion in model container [2020-10-20 06:05:49,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:05:49" (3/3) ... [2020-10-20 06:05:49,658 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-rb-sentinel-1.i [2020-10-20 06:05:49,672 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 06:05:49,682 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 71 error locations. [2020-10-20 06:05:49,699 INFO L253 AbstractCegarLoop]: Starting to check reachability of 71 error locations. [2020-10-20 06:05:49,724 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 06:05:49,725 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-20 06:05:49,725 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 06:05:49,725 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 06:05:49,725 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 06:05:49,726 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 06:05:49,726 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 06:05:49,726 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 06:05:49,749 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states. [2020-10-20 06:05:49,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-20 06:05:49,760 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:05:49,761 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:05:49,762 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-20 06:05:49,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:05:49,770 INFO L82 PathProgramCache]: Analyzing trace with hash -2010730465, now seen corresponding path program 1 times [2020-10-20 06:05:49,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 06:05:49,786 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1614455583] [2020-10-20 06:05:49,786 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 06:05:49,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:05:49,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-20 06:05:49,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:05:50,036 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 06:05:50,037 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:05:50,046 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:05:50,047 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:05:50,048 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-20 06:05:50,071 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 06:05:50,071 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 06:05:50,099 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 06:05:50,100 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1614455583] [2020-10-20 06:05:50,101 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:05:50,101 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-20 06:05:50,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985938554] [2020-10-20 06:05:50,107 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 06:05:50,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 06:05:50,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 06:05:50,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 06:05:50,128 INFO L87 Difference]: Start difference. First operand 172 states. Second operand 3 states. [2020-10-20 06:05:50,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:05:50,563 INFO L93 Difference]: Finished difference Result 189 states and 202 transitions. [2020-10-20 06:05:50,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 06:05:50,565 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-10-20 06:05:50,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:05:50,581 INFO L225 Difference]: With dead ends: 189 [2020-10-20 06:05:50,581 INFO L226 Difference]: Without dead ends: 185 [2020-10-20 06:05:50,583 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 06:05:50,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-10-20 06:05:50,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 157. [2020-10-20 06:05:50,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-10-20 06:05:50,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 168 transitions. [2020-10-20 06:05:50,637 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 168 transitions. Word has length 7 [2020-10-20 06:05:50,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:05:50,638 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 168 transitions. [2020-10-20 06:05:50,638 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 06:05:50,638 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 168 transitions. [2020-10-20 06:05:50,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-20 06:05:50,639 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:05:50,639 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:05:50,861 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-20 06:05:50,863 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-20 06:05:50,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:05:50,865 INFO L82 PathProgramCache]: Analyzing trace with hash -2010730464, now seen corresponding path program 1 times [2020-10-20 06:05:50,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 06:05:50,866 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [91180539] [2020-10-20 06:05:50,866 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 06:05:50,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:05:50,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-20 06:05:50,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:05:51,016 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 06:05:51,017 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:05:51,023 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:05:51,024 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:05:51,024 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-10-20 06:05:51,035 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 06:05:51,036 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 06:05:51,095 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 06:05:51,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [91180539] [2020-10-20 06:05:51,096 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:05:51,096 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2020-10-20 06:05:51,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647710771] [2020-10-20 06:05:51,098 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:05:51,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 06:05:51,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:05:51,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:05:51,099 INFO L87 Difference]: Start difference. First operand 157 states and 168 transitions. Second operand 4 states. [2020-10-20 06:05:51,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:05:51,596 INFO L93 Difference]: Finished difference Result 154 states and 165 transitions. [2020-10-20 06:05:51,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 06:05:51,597 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-10-20 06:05:51,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:05:51,599 INFO L225 Difference]: With dead ends: 154 [2020-10-20 06:05:51,600 INFO L226 Difference]: Without dead ends: 154 [2020-10-20 06:05:51,601 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:05:51,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-10-20 06:05:51,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2020-10-20 06:05:51,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-10-20 06:05:51,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 165 transitions. [2020-10-20 06:05:51,630 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 165 transitions. Word has length 7 [2020-10-20 06:05:51,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:05:51,630 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 165 transitions. [2020-10-20 06:05:51,630 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:05:51,631 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 165 transitions. [2020-10-20 06:05:51,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-20 06:05:51,631 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:05:51,631 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:05:51,848 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-20 06:05:51,849 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-20 06:05:51,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:05:51,850 INFO L82 PathProgramCache]: Analyzing trace with hash -1224286621, now seen corresponding path program 1 times [2020-10-20 06:05:51,852 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 06:05:51,857 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1960305264] [2020-10-20 06:05:51,857 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 06:05:51,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:05:51,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-20 06:05:51,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:05:51,998 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 06:05:51,998 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:05:52,001 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:05:52,002 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:05:52,002 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-20 06:05:52,006 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 06:05:52,006 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 06:05:52,016 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 06:05:52,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1960305264] [2020-10-20 06:05:52,016 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:05:52,016 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-20 06:05:52,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48425553] [2020-10-20 06:05:52,017 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 06:05:52,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 06:05:52,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 06:05:52,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 06:05:52,018 INFO L87 Difference]: Start difference. First operand 154 states and 165 transitions. Second operand 3 states. [2020-10-20 06:05:52,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:05:52,364 INFO L93 Difference]: Finished difference Result 153 states and 164 transitions. [2020-10-20 06:05:52,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 06:05:52,367 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-10-20 06:05:52,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:05:52,369 INFO L225 Difference]: With dead ends: 153 [2020-10-20 06:05:52,369 INFO L226 Difference]: Without dead ends: 153 [2020-10-20 06:05:52,370 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 20 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 06:05:52,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-10-20 06:05:52,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 149. [2020-10-20 06:05:52,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-20 06:05:52,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 162 transitions. [2020-10-20 06:05:52,390 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 162 transitions. Word has length 11 [2020-10-20 06:05:52,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:05:52,390 INFO L481 AbstractCegarLoop]: Abstraction has 149 states and 162 transitions. [2020-10-20 06:05:52,391 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 06:05:52,391 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 162 transitions. [2020-10-20 06:05:52,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-20 06:05:52,391 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:05:52,392 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:05:52,612 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-20 06:05:52,613 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-20 06:05:52,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:05:52,614 INFO L82 PathProgramCache]: Analyzing trace with hash -1224286620, now seen corresponding path program 1 times [2020-10-20 06:05:52,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 06:05:52,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1044335530] [2020-10-20 06:05:52,616 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 06:05:52,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:05:52,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-20 06:05:52,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:05:52,758 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 06:05:52,759 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:05:52,765 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:05:52,765 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:05:52,765 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-10-20 06:05:52,777 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 06:05:52,777 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 06:05:52,833 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 06:05:52,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1044335530] [2020-10-20 06:05:52,834 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:05:52,834 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2020-10-20 06:05:52,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222170562] [2020-10-20 06:05:52,835 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:05:52,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 06:05:52,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:05:52,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:05:52,835 INFO L87 Difference]: Start difference. First operand 149 states and 162 transitions. Second operand 4 states. [2020-10-20 06:05:53,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:05:53,335 INFO L93 Difference]: Finished difference Result 166 states and 178 transitions. [2020-10-20 06:05:53,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:05:53,336 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-20 06:05:53,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:05:53,337 INFO L225 Difference]: With dead ends: 166 [2020-10-20 06:05:53,338 INFO L226 Difference]: Without dead ends: 166 [2020-10-20 06:05:53,338 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:05:53,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-10-20 06:05:53,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 153. [2020-10-20 06:05:53,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-20 06:05:53,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 166 transitions. [2020-10-20 06:05:53,348 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 166 transitions. Word has length 11 [2020-10-20 06:05:53,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:05:53,348 INFO L481 AbstractCegarLoop]: Abstraction has 153 states and 166 transitions. [2020-10-20 06:05:53,348 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:05:53,348 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 166 transitions. [2020-10-20 06:05:53,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-20 06:05:53,349 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:05:53,349 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:05:53,554 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-10-20 06:05:53,555 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-20 06:05:53,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:05:53,556 INFO L82 PathProgramCache]: Analyzing trace with hash 981248210, now seen corresponding path program 1 times [2020-10-20 06:05:53,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 06:05:53,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [903468361] [2020-10-20 06:05:53,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-10-20 06:05:53,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:05:53,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-20 06:05:53,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:05:53,739 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 06:05:53,739 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:05:53,741 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:05:53,742 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:05:53,742 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-20 06:05:53,783 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:05:53,784 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 30 [2020-10-20 06:05:53,786 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:05:53,805 INFO L625 ElimStorePlain]: treesize reduction 14, result has 44.0 percent of original size [2020-10-20 06:05:53,807 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 06:05:53,807 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:14, output treesize:11 [2020-10-20 06:05:53,819 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 06:05:53,820 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 06:05:53,848 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 06:05:53,849 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [903468361] [2020-10-20 06:05:53,849 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:05:53,849 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-10-20 06:05:53,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119963886] [2020-10-20 06:05:53,850 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:05:53,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 06:05:53,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:05:53,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:05:53,851 INFO L87 Difference]: Start difference. First operand 153 states and 166 transitions. Second operand 4 states. [2020-10-20 06:05:54,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:05:54,379 INFO L93 Difference]: Finished difference Result 154 states and 168 transitions. [2020-10-20 06:05:54,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 06:05:54,381 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-10-20 06:05:54,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:05:54,383 INFO L225 Difference]: With dead ends: 154 [2020-10-20 06:05:54,383 INFO L226 Difference]: Without dead ends: 154 [2020-10-20 06:05:54,383 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:05:54,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-10-20 06:05:54,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 140. [2020-10-20 06:05:54,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-20 06:05:54,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 155 transitions. [2020-10-20 06:05:54,396 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 155 transitions. Word has length 16 [2020-10-20 06:05:54,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:05:54,396 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 155 transitions. [2020-10-20 06:05:54,396 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:05:54,397 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 155 transitions. [2020-10-20 06:05:54,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-20 06:05:54,397 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:05:54,397 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:05:54,607 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-10-20 06:05:54,608 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-20 06:05:54,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:05:54,609 INFO L82 PathProgramCache]: Analyzing trace with hash 981248211, now seen corresponding path program 1 times [2020-10-20 06:05:54,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 06:05:54,611 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2129774759] [2020-10-20 06:05:54,611 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 06:05:54,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:05:54,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-20 06:05:54,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:05:54,776 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 06:05:54,776 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:05:54,782 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:05:54,782 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:05:54,782 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-10-20 06:05:54,832 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:05:54,833 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 28 [2020-10-20 06:05:54,834 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:05:54,869 INFO L625 ElimStorePlain]: treesize reduction 14, result has 50.0 percent of original size [2020-10-20 06:05:54,871 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 06:05:54,872 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:14 [2020-10-20 06:05:54,882 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 06:05:54,882 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 06:05:55,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:05:55,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2129774759] [2020-10-20 06:05:55,077 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:05:55,077 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 6 [2020-10-20 06:05:55,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557281310] [2020-10-20 06:05:55,078 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-20 06:05:55,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 06:05:55,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-20 06:05:55,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-20 06:05:55,078 INFO L87 Difference]: Start difference. First operand 140 states and 155 transitions. Second operand 7 states. [2020-10-20 06:05:56,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:05:56,359 INFO L93 Difference]: Finished difference Result 186 states and 203 transitions. [2020-10-20 06:05:56,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 06:05:56,360 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-10-20 06:05:56,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:05:56,361 INFO L225 Difference]: With dead ends: 186 [2020-10-20 06:05:56,361 INFO L226 Difference]: Without dead ends: 186 [2020-10-20 06:05:56,362 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-20 06:05:56,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-10-20 06:05:56,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 139. [2020-10-20 06:05:56,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-20 06:05:56,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 155 transitions. [2020-10-20 06:05:56,381 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 155 transitions. Word has length 16 [2020-10-20 06:05:56,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:05:56,382 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 155 transitions. [2020-10-20 06:05:56,382 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-20 06:05:56,382 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 155 transitions. [2020-10-20 06:05:56,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-20 06:05:56,383 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:05:56,387 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:05:56,599 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-10-20 06:05:56,601 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-20 06:05:56,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:05:56,601 INFO L82 PathProgramCache]: Analyzing trace with hash -1913274155, now seen corresponding path program 1 times [2020-10-20 06:05:56,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 06:05:56,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1980825617] [2020-10-20 06:05:56,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-10-20 06:05:56,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:05:56,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:05:56,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:05:56,756 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 06:05:56,756 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:05:56,759 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:05:56,759 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:05:56,759 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-20 06:05:56,775 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-10-20 06:05:56,775 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:05:56,782 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:05:56,784 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:05:56,784 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:19, output treesize:11 [2020-10-20 06:05:56,804 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2020-10-20 06:05:56,805 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:05:56,810 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:05:56,811 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:05:56,811 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:7 [2020-10-20 06:05:56,820 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 06:05:56,821 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 06:05:56,836 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 06:05:56,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1980825617] [2020-10-20 06:05:56,836 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:05:56,836 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2020-10-20 06:05:56,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782554870] [2020-10-20 06:05:56,837 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 06:05:56,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 06:05:56,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 06:05:56,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:05:56,838 INFO L87 Difference]: Start difference. First operand 139 states and 155 transitions. Second operand 5 states. [2020-10-20 06:05:57,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:05:57,447 INFO L93 Difference]: Finished difference Result 189 states and 214 transitions. [2020-10-20 06:05:57,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 06:05:57,447 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-20 06:05:57,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:05:57,449 INFO L225 Difference]: With dead ends: 189 [2020-10-20 06:05:57,449 INFO L226 Difference]: Without dead ends: 189 [2020-10-20 06:05:57,450 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-20 06:05:57,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-10-20 06:05:57,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 138. [2020-10-20 06:05:57,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-10-20 06:05:57,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 154 transitions. [2020-10-20 06:05:57,457 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 154 transitions. Word has length 18 [2020-10-20 06:05:57,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:05:57,458 INFO L481 AbstractCegarLoop]: Abstraction has 138 states and 154 transitions. [2020-10-20 06:05:57,458 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 06:05:57,458 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 154 transitions. [2020-10-20 06:05:57,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-20 06:05:57,459 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:05:57,459 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:05:57,662 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-10-20 06:05:57,663 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-20 06:05:57,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:05:57,665 INFO L82 PathProgramCache]: Analyzing trace with hash -1913274154, now seen corresponding path program 1 times [2020-10-20 06:05:57,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 06:05:57,666 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1679390105] [2020-10-20 06:05:57,667 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 06:05:57,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:05:57,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-20 06:05:57,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:05:57,819 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 06:05:57,820 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:05:57,824 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:05:57,825 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:05:57,825 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-10-20 06:05:57,853 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-10-20 06:05:57,854 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:05:57,863 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:05:57,872 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-10-20 06:05:57,873 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 06:05:57,881 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:05:57,883 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:05:57,883 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:28, output treesize:17 [2020-10-20 06:05:57,931 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-10-20 06:05:57,932 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:05:57,939 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:05:57,943 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2020-10-20 06:05:57,944 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 06:05:57,950 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:05:57,950 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:05:57,950 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:33, output treesize:11 [2020-10-20 06:05:57,964 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 06:05:57,964 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 06:05:58,105 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 06:05:58,106 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1679390105] [2020-10-20 06:05:58,106 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:05:58,106 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2020-10-20 06:05:58,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836275163] [2020-10-20 06:05:58,107 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-20 06:05:58,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 06:05:58,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-20 06:05:58,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-20 06:05:58,107 INFO L87 Difference]: Start difference. First operand 138 states and 154 transitions. Second operand 8 states. [2020-10-20 06:05:59,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:05:59,758 INFO L93 Difference]: Finished difference Result 212 states and 239 transitions. [2020-10-20 06:05:59,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 06:05:59,759 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2020-10-20 06:05:59,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:05:59,760 INFO L225 Difference]: With dead ends: 212 [2020-10-20 06:05:59,761 INFO L226 Difference]: Without dead ends: 212 [2020-10-20 06:05:59,761 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-10-20 06:05:59,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-10-20 06:05:59,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 137. [2020-10-20 06:05:59,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-20 06:05:59,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 153 transitions. [2020-10-20 06:05:59,768 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 153 transitions. Word has length 18 [2020-10-20 06:05:59,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:05:59,768 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 153 transitions. [2020-10-20 06:05:59,769 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-20 06:05:59,769 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 153 transitions. [2020-10-20 06:05:59,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-20 06:05:59,770 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:05:59,770 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:05:59,970 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-10-20 06:05:59,971 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-20 06:05:59,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:05:59,972 INFO L82 PathProgramCache]: Analyzing trace with hash -362505277, now seen corresponding path program 1 times [2020-10-20 06:05:59,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 06:05:59,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1084358998] [2020-10-20 06:05:59,974 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 06:06:00,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:06:00,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-20 06:06:00,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:06:00,102 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 06:06:00,102 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:06:00,104 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:06:00,105 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:06:00,105 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-20 06:06:00,122 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:06:00,123 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 17 [2020-10-20 06:06:00,128 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:06:00,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1084358998] [2020-10-20 06:06:00,132 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 1) [2020-10-20 06:06:00,136 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [816325430] [2020-10-20 06:06:00,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 11 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-20 06:06:00,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:06:00,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-20 06:06:00,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:06:00,367 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 06:06:00,368 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:06:00,370 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:06:00,370 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:06:00,370 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-20 06:06:00,380 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:06:00,381 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 17 [2020-10-20 06:06:00,382 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:06:00,384 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:06:00,384 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:06:00,384 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:4 [2020-10-20 06:06:00,396 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 06:06:00,396 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 06:06:00,411 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 06:06:00,411 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:06:00,411 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-10-20 06:06:00,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641891505] [2020-10-20 06:06:00,412 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 06:06:00,412 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 06:06:00,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 06:06:00,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:06:00,413 INFO L87 Difference]: Start difference. First operand 137 states and 153 transitions. Second operand 5 states. [2020-10-20 06:06:00,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:06:00,931 INFO L93 Difference]: Finished difference Result 183 states and 197 transitions. [2020-10-20 06:06:00,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 06:06:00,931 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-10-20 06:06:00,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:06:00,933 INFO L225 Difference]: With dead ends: 183 [2020-10-20 06:06:00,934 INFO L226 Difference]: Without dead ends: 183 [2020-10-20 06:06:00,934 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-20 06:06:00,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-10-20 06:06:00,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 136. [2020-10-20 06:06:00,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-20 06:06:00,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 149 transitions. [2020-10-20 06:06:00,940 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 149 transitions. Word has length 20 [2020-10-20 06:06:00,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:06:00,940 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 149 transitions. [2020-10-20 06:06:00,940 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 06:06:00,941 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 149 transitions. [2020-10-20 06:06:00,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-20 06:06:00,941 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:06:00,942 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] [2020-10-20 06:06:01,350 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3,11 cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-20 06:06:01,352 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-20 06:06:01,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:06:01,352 INFO L82 PathProgramCache]: Analyzing trace with hash 1799374189, now seen corresponding path program 1 times [2020-10-20 06:06:01,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 06:06:01,353 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1482752244] [2020-10-20 06:06:01,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2020-10-20 06:06:01,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:06:01,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-20 06:06:01,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:06:01,528 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-10-20 06:06:01,528 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:06:01,537 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:06:01,538 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:06:01,538 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:17, output treesize:13 [2020-10-20 06:06:01,577 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-10-20 06:06:01,578 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:06:01,580 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:06:01,580 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:06:01,580 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2020-10-20 06:06:01,589 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 06:06:01,589 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 06:06:01,633 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 06:06:01,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1482752244] [2020-10-20 06:06:01,634 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:06:01,634 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 5] imperfect sequences [] total 8 [2020-10-20 06:06:01,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686656687] [2020-10-20 06:06:01,635 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-20 06:06:01,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 06:06:01,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-20 06:06:01,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-20 06:06:01,636 INFO L87 Difference]: Start difference. First operand 136 states and 149 transitions. Second operand 8 states. [2020-10-20 06:06:02,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:06:02,447 INFO L93 Difference]: Finished difference Result 190 states and 209 transitions. [2020-10-20 06:06:02,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 06:06:02,448 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2020-10-20 06:06:02,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:06:02,450 INFO L225 Difference]: With dead ends: 190 [2020-10-20 06:06:02,450 INFO L226 Difference]: Without dead ends: 190 [2020-10-20 06:06:02,451 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-20 06:06:02,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-10-20 06:06:02,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 141. [2020-10-20 06:06:02,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-20 06:06:02,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 154 transitions. [2020-10-20 06:06:02,456 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 154 transitions. Word has length 23 [2020-10-20 06:06:02,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:06:02,457 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 154 transitions. [2020-10-20 06:06:02,457 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-20 06:06:02,457 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 154 transitions. [2020-10-20 06:06:02,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-20 06:06:02,458 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:06:02,459 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] [2020-10-20 06:06:02,659 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 mathsat -unsat_core_generation=3 [2020-10-20 06:06:02,660 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-20 06:06:02,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:06:02,660 INFO L82 PathProgramCache]: Analyzing trace with hash 685968663, now seen corresponding path program 1 times [2020-10-20 06:06:02,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 06:06:02,661 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1488613364] [2020-10-20 06:06:02,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 13 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with mathsat -unsat_core_generation=3 [2020-10-20 06:06:02,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:06:02,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-20 06:06:02,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:06:02,909 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 06:06:02,910 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:06:02,915 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:06:02,916 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:06:02,916 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-20 06:06:02,948 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:06:02,948 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 19 treesize of output 41 [2020-10-20 06:06:02,951 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-20 06:06:02,953 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:06:02,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1488613364] [2020-10-20 06:06:02,954 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 1) [2020-10-20 06:06:02,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1302990177] [2020-10-20 06:06:02,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 14 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-20 06:06:03,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:06:03,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-20 06:06:03,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:06:03,281 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:06:03,281 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 30 [2020-10-20 06:06:03,283 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:06:03,283 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 1) [2020-10-20 06:06:03,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860121261] [2020-10-20 06:06:03,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:06:03,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:06:03,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-20 06:06:03,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:06:03,434 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:06:03,435 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 19 treesize of output 41 [2020-10-20 06:06:03,437 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-20 06:06:03,438 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:06:03,439 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 1) [2020-10-20 06:06:03,439 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:06:03,439 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-10-20 06:06:03,440 ERROR L205 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2020-10-20 06:06:03,440 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 06:06:04,057 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 mathsat -unsat_core_generation=3,14 cvc4 --incremental --print-success --lang smt --rewrite-divk,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:06:04,072 WARN L238 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-20 06:06:04,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 06:06:04 BoogieIcfgContainer [2020-10-20 06:06:04,073 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 06:06:04,073 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 06:06:04,073 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 06:06:04,074 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 06:06:04,074 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:05:49" (3/4) ... [2020-10-20 06:06:04,078 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 06:06:04,078 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 06:06:04,080 INFO L168 Benchmark]: Toolchain (without parser) took 16477.49 ms. Allocated memory was 35.7 MB in the beginning and 85.5 MB in the end (delta: 49.8 MB). Free memory was 13.7 MB in the beginning and 52.8 MB in the end (delta: -39.2 MB). Peak memory consumption was 10.7 MB. Max. memory is 14.3 GB. [2020-10-20 06:06:04,080 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 34.1 MB. Free memory was 9.9 MB in the beginning and 9.9 MB in the end (delta: 43.9 kB). Peak memory consumption was 43.9 kB. Max. memory is 14.3 GB. [2020-10-20 06:06:04,081 INFO L168 Benchmark]: CACSL2BoogieTranslator took 711.04 ms. Allocated memory was 35.7 MB in the beginning and 44.0 MB in the end (delta: 8.4 MB). Free memory was 12.8 MB in the beginning and 25.0 MB in the end (delta: -12.2 MB). Peak memory consumption was 11.5 MB. Max. memory is 14.3 GB. [2020-10-20 06:06:04,082 INFO L168 Benchmark]: Boogie Preprocessor took 127.67 ms. Allocated memory is still 44.0 MB. Free memory was 25.0 MB in the beginning and 21.3 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.7 MB. Max. memory is 14.3 GB. [2020-10-20 06:06:04,082 INFO L168 Benchmark]: RCFGBuilder took 1198.96 ms. Allocated memory was 44.0 MB in the beginning and 50.9 MB in the end (delta: 6.8 MB). Free memory was 21.3 MB in the beginning and 25.1 MB in the end (delta: -3.8 MB). Peak memory consumption was 18.2 MB. Max. memory is 14.3 GB. [2020-10-20 06:06:04,083 INFO L168 Benchmark]: TraceAbstraction took 14423.71 ms. Allocated memory was 50.9 MB in the beginning and 85.5 MB in the end (delta: 34.6 MB). Free memory was 24.3 MB in the beginning and 52.8 MB in the end (delta: -28.6 MB). Peak memory consumption was 6.0 MB. Max. memory is 14.3 GB. [2020-10-20 06:06:04,083 INFO L168 Benchmark]: Witness Printer took 5.12 ms. Allocated memory is still 85.5 MB. Free memory is still 52.8 MB. There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 06:06:04,086 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 34.1 MB. Free memory was 9.9 MB in the beginning and 9.9 MB in the end (delta: 43.9 kB). Peak memory consumption was 43.9 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 711.04 ms. Allocated memory was 35.7 MB in the beginning and 44.0 MB in the end (delta: 8.4 MB). Free memory was 12.8 MB in the beginning and 25.0 MB in the end (delta: -12.2 MB). Peak memory consumption was 11.5 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 127.67 ms. Allocated memory is still 44.0 MB. Free memory was 25.0 MB in the beginning and 21.3 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.7 MB. Max. memory is 14.3 GB. * RCFGBuilder took 1198.96 ms. Allocated memory was 44.0 MB in the beginning and 50.9 MB in the end (delta: 6.8 MB). Free memory was 21.3 MB in the beginning and 25.1 MB in the end (delta: -3.8 MB). Peak memory consumption was 18.2 MB. Max. memory is 14.3 GB. * TraceAbstraction took 14423.71 ms. Allocated memory was 50.9 MB in the beginning and 85.5 MB in the end (delta: 34.6 MB). Free memory was 24.3 MB in the beginning and 52.8 MB in the end (delta: -28.6 MB). Peak memory consumption was 6.0 MB. Max. memory is 14.3 GB. * Witness Printer took 5.12 ms. Allocated memory is still 85.5 MB. Free memory is still 52.8 MB. There was no memory consumed. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 1017]: 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: [L998] struct TSLL* null = malloc(sizeof(struct TSLL)); [L999] null->next = ((void*)0) [L1000] null->prev = ((void*)0) [L1001] null->colour = BLACK [L1003] struct TSLL* list = malloc(sizeof(struct TSLL)); [L1004] list->next = null [L1005] list->prev = null [L1006] list->colour = BLACK [L1008] struct TSLL* end = list; [L1011] COND TRUE __VERIFIER_nondet_int() [L1014] end->next = malloc(sizeof(struct TSLL)) [L1015] EXPR end->next [L1015] end->next->prev = end [L1016] EXPR end->next [L1016] end = end->next [L1017] end->next = null - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 178 locations, 71 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 14.3s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 7.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 984 SDtfs, 1890 SDslu, 1255 SDs, 0 SdLazy, 1864 SolverSat, 146 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 307 GetRequests, 257 SyntacticMatches, 5 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=172occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 328 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 147 NumberOfCodeBlocks, 147 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 274 ConstructedInterpolants, 5 QuantifiedInterpolants, 14536 SizeOfPredicates, 47 NumberOfNonLiveVariables, 1038 ConjunctsInSsa, 55 ConjunctsInUnsatCore, 20 InterpolantComputations, 20 PerfectInterpolantSequences, 0/0 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...