./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/list-properties/simple_built_from_end.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/list-properties/simple_built_from_end.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 279a162aa90145a7316b3266460570a8e3cad8e6 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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/list-properties/simple_built_from_end.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 279a162aa90145a7316b3266460570a8e3cad8e6 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 06:07:48,026 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 06:07:48,028 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 06:07:48,077 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 06:07:48,078 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 06:07:48,090 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 06:07:48,092 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 06:07:48,095 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 06:07:48,099 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 06:07:48,101 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 06:07:48,103 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 06:07:48,106 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 06:07:48,106 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 06:07:48,111 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 06:07:48,113 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 06:07:48,115 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 06:07:48,116 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 06:07:48,117 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 06:07:48,121 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 06:07:48,127 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 06:07:48,129 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 06:07:48,131 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 06:07:48,133 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 06:07:48,134 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 06:07:48,143 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 06:07:48,144 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 06:07:48,144 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 06:07:48,145 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 06:07:48,146 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 06:07:48,147 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 06:07:48,147 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 06:07:48,148 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 06:07:48,149 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 06:07:48,149 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 06:07:48,150 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 06:07:48,151 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 06:07:48,152 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 06:07:48,152 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 06:07:48,152 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 06:07:48,153 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 06:07:48,154 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 06:07:48,155 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-10-20 06:07:48,178 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 06:07:48,178 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 06:07:48,179 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 06:07:48,180 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 06:07:48,180 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 06:07:48,180 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 06:07:48,181 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 06:07:48,181 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 06:07:48,181 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 06:07:48,181 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 06:07:48,182 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 06:07:48,182 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-20 06:07:48,182 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-20 06:07:48,183 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-20 06:07:48,183 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 06:07:48,183 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-20 06:07:48,183 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 06:07:48,184 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 06:07:48,184 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 06:07:48,184 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 06:07:48,184 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 06:07:48,185 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 06:07:48,185 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 06:07:48,185 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 06:07:48,186 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 06:07:48,186 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 06:07:48,186 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 06:07:48,186 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 06:07:48,187 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 -> 279a162aa90145a7316b3266460570a8e3cad8e6 [2020-10-20 06:07:48,398 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 06:07:48,410 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 06:07:48,414 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 06:07:48,416 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 06:07:48,416 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 06:07:48,417 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-properties/simple_built_from_end.i [2020-10-20 06:07:48,490 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b209ef6e/518f08dd84154f3c93c7bd463a7f952b/FLAG5240ed45e [2020-10-20 06:07:49,038 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 06:07:49,039 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-properties/simple_built_from_end.i [2020-10-20 06:07:49,060 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b209ef6e/518f08dd84154f3c93c7bd463a7f952b/FLAG5240ed45e [2020-10-20 06:07:49,295 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b209ef6e/518f08dd84154f3c93c7bd463a7f952b [2020-10-20 06:07:49,299 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 06:07:49,305 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-20 06:07:49,307 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 06:07:49,308 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 06:07:49,311 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 06:07:49,313 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:07:49" (1/1) ... [2020-10-20 06:07:49,316 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40880605 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:07:49, skipping insertion in model container [2020-10-20 06:07:49,317 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:07:49" (1/1) ... [2020-10-20 06:07:49,326 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 06:07:49,362 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 06:07:49,725 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:07:49,737 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 06:07:49,790 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:07:49,867 INFO L208 MainTranslator]: Completed translation [2020-10-20 06:07:49,867 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:07:49 WrapperNode [2020-10-20 06:07:49,868 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 06:07:49,868 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 06:07:49,869 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 06:07:49,869 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 06:07:49,883 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:07:49" (1/1) ... [2020-10-20 06:07:49,884 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:07:49" (1/1) ... [2020-10-20 06:07:49,900 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:07:49" (1/1) ... [2020-10-20 06:07:49,900 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:07:49" (1/1) ... [2020-10-20 06:07:49,917 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:07:49" (1/1) ... [2020-10-20 06:07:49,922 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:07:49" (1/1) ... [2020-10-20 06:07:49,926 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:07:49" (1/1) ... [2020-10-20 06:07:49,932 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 06:07:49,933 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 06:07:49,933 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 06:07:49,933 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 06:07:49,934 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:07:49" (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 06:07:50,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-20 06:07:50,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 06:07:50,001 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-20 06:07:50,001 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-20 06:07:50,002 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-20 06:07:50,002 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-10-20 06:07:50,002 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-10-20 06:07:50,002 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-10-20 06:07:50,003 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-20 06:07:50,003 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-20 06:07:50,003 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-20 06:07:50,003 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-20 06:07:50,004 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-20 06:07:50,004 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-20 06:07:50,004 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-20 06:07:50,004 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 06:07:50,005 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-20 06:07:50,005 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-20 06:07:50,005 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-20 06:07:50,005 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-20 06:07:50,006 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-20 06:07:50,006 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-20 06:07:50,006 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-20 06:07:50,006 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-20 06:07:50,006 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-20 06:07:50,007 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-20 06:07:50,007 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-20 06:07:50,007 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-20 06:07:50,007 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-20 06:07:50,008 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-20 06:07:50,008 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-20 06:07:50,008 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-20 06:07:50,008 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-20 06:07:50,008 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-20 06:07:50,009 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-20 06:07:50,009 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-10-20 06:07:50,009 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-10-20 06:07:50,009 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-10-20 06:07:50,009 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-20 06:07:50,010 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-20 06:07:50,010 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-20 06:07:50,010 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-20 06:07:50,010 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-20 06:07:50,010 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-20 06:07:50,011 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-20 06:07:50,011 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-20 06:07:50,011 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-20 06:07:50,011 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-20 06:07:50,011 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-20 06:07:50,012 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-20 06:07:50,012 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-20 06:07:50,012 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-20 06:07:50,012 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-20 06:07:50,013 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-20 06:07:50,013 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-20 06:07:50,013 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-20 06:07:50,013 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-20 06:07:50,013 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-20 06:07:50,014 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-20 06:07:50,014 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-20 06:07:50,014 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-20 06:07:50,014 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-20 06:07:50,015 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-20 06:07:50,015 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-20 06:07:50,015 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-20 06:07:50,015 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-20 06:07:50,015 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-20 06:07:50,016 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-20 06:07:50,016 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-20 06:07:50,016 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-20 06:07:50,016 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-20 06:07:50,016 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-20 06:07:50,017 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-20 06:07:50,017 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-20 06:07:50,017 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-20 06:07:50,017 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-20 06:07:50,018 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-20 06:07:50,018 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-20 06:07:50,018 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-20 06:07:50,018 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-20 06:07:50,018 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-20 06:07:50,019 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-20 06:07:50,019 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-20 06:07:50,019 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-20 06:07:50,019 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-20 06:07:50,019 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-20 06:07:50,020 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-20 06:07:50,020 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-20 06:07:50,020 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-20 06:07:50,020 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-20 06:07:50,020 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-20 06:07:50,021 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-20 06:07:50,021 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-20 06:07:50,021 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-20 06:07:50,021 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-20 06:07:50,021 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-20 06:07:50,022 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-20 06:07:50,022 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-20 06:07:50,022 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-20 06:07:50,022 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-20 06:07:50,022 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-20 06:07:50,023 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-20 06:07:50,023 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-20 06:07:50,023 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-20 06:07:50,023 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-20 06:07:50,023 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-20 06:07:50,024 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-20 06:07:50,024 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-20 06:07:50,024 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-20 06:07:50,024 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-20 06:07:50,024 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-20 06:07:50,025 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-20 06:07:50,025 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-20 06:07:50,025 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-20 06:07:50,025 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-20 06:07:50,025 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-20 06:07:50,026 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-20 06:07:50,026 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-20 06:07:50,026 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-20 06:07:50,026 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-20 06:07:50,026 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-20 06:07:50,027 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-20 06:07:50,027 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-20 06:07:50,027 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-20 06:07:50,027 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-20 06:07:50,027 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-20 06:07:50,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 06:07:50,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-20 06:07:50,028 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-20 06:07:50,028 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-20 06:07:50,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-20 06:07:50,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 06:07:50,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 06:07:50,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 06:07:50,444 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-20 06:07:50,571 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 06:07:50,572 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-20 06:07:50,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:07:50 BoogieIcfgContainer [2020-10-20 06:07:50,574 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 06:07:50,575 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 06:07:50,575 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 06:07:50,579 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 06:07:50,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 06:07:49" (1/3) ... [2020-10-20 06:07:50,581 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a9612bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:07:50, skipping insertion in model container [2020-10-20 06:07:50,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:07:49" (2/3) ... [2020-10-20 06:07:50,581 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a9612bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:07:50, skipping insertion in model container [2020-10-20 06:07:50,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:07:50" (3/3) ... [2020-10-20 06:07:50,583 INFO L111 eAbstractionObserver]: Analyzing ICFG simple_built_from_end.i [2020-10-20 06:07:50,595 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 06:07:50,603 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2020-10-20 06:07:50,615 INFO L253 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2020-10-20 06:07:50,648 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 06:07:50,648 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-20 06:07:50,648 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 06:07:50,649 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 06:07:50,649 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 06:07:50,649 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 06:07:50,649 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 06:07:50,650 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 06:07:50,665 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-10-20 06:07:50,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-20 06:07:50,676 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:07:50,677 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:07:50,677 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 06:07:50,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:07:50,682 INFO L82 PathProgramCache]: Analyzing trace with hash 691471212, now seen corresponding path program 1 times [2020-10-20 06:07:50,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:07:50,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510306311] [2020-10-20 06:07:50,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:07:50,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:07:50,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:07:50,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:07:50,907 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 06:07:50,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510306311] [2020-10-20 06:07:50,909 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:07:50,910 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 06:07:50,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285377879] [2020-10-20 06:07:50,916 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 06:07:50,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:07:50,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 06:07:50,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 06:07:50,933 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 3 states. [2020-10-20 06:07:51,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:07:51,069 INFO L93 Difference]: Finished difference Result 51 states and 56 transitions. [2020-10-20 06:07:51,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 06:07:51,071 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-20 06:07:51,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:07:51,081 INFO L225 Difference]: With dead ends: 51 [2020-10-20 06:07:51,082 INFO L226 Difference]: Without dead ends: 43 [2020-10-20 06:07:51,084 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 06:07:51,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-10-20 06:07:51,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 38. [2020-10-20 06:07:51,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-20 06:07:51,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 45 transitions. [2020-10-20 06:07:51,127 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 45 transitions. Word has length 9 [2020-10-20 06:07:51,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:07:51,128 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 45 transitions. [2020-10-20 06:07:51,128 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 06:07:51,128 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 45 transitions. [2020-10-20 06:07:51,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 06:07:51,129 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:07:51,129 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:07:51,130 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 06:07:51,130 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 06:07:51,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:07:51,130 INFO L82 PathProgramCache]: Analyzing trace with hash -39877821, now seen corresponding path program 1 times [2020-10-20 06:07:51,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:07:51,131 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966799879] [2020-10-20 06:07:51,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:07:51,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:07:51,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:07:51,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:07:51,257 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 06:07:51,258 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966799879] [2020-10-20 06:07:51,258 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:07:51,258 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 06:07:51,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084687742] [2020-10-20 06:07:51,260 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:07:51,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:07:51,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:07:51,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:07:51,261 INFO L87 Difference]: Start difference. First operand 38 states and 45 transitions. Second operand 4 states. [2020-10-20 06:07:51,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:07:51,383 INFO L93 Difference]: Finished difference Result 41 states and 44 transitions. [2020-10-20 06:07:51,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:07:51,383 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-20 06:07:51,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:07:51,384 INFO L225 Difference]: With dead ends: 41 [2020-10-20 06:07:51,385 INFO L226 Difference]: Without dead ends: 41 [2020-10-20 06:07:51,386 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 06:07:51,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-20 06:07:51,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 36. [2020-10-20 06:07:51,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-20 06:07:51,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2020-10-20 06:07:51,391 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 10 [2020-10-20 06:07:51,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:07:51,392 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2020-10-20 06:07:51,392 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:07:51,392 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2020-10-20 06:07:51,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 06:07:51,393 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:07:51,393 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:07:51,393 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 06:07:51,393 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 06:07:51,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:07:51,394 INFO L82 PathProgramCache]: Analyzing trace with hash -39877820, now seen corresponding path program 1 times [2020-10-20 06:07:51,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:07:51,394 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036636350] [2020-10-20 06:07:51,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:07:51,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:07:51,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:07:51,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:07:51,478 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 06:07:51,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036636350] [2020-10-20 06:07:51,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:07:51,479 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 06:07:51,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975143849] [2020-10-20 06:07:51,479 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:07:51,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:07:51,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:07:51,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:07:51,480 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 4 states. [2020-10-20 06:07:51,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:07:51,585 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2020-10-20 06:07:51,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:07:51,585 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-20 06:07:51,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:07:51,586 INFO L225 Difference]: With dead ends: 39 [2020-10-20 06:07:51,586 INFO L226 Difference]: Without dead ends: 39 [2020-10-20 06:07:51,587 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 06:07:51,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-20 06:07:51,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 34. [2020-10-20 06:07:51,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-20 06:07:51,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 41 transitions. [2020-10-20 06:07:51,592 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 41 transitions. Word has length 10 [2020-10-20 06:07:51,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:07:51,592 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 41 transitions. [2020-10-20 06:07:51,593 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:07:51,593 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 41 transitions. [2020-10-20 06:07:51,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 06:07:51,593 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:07:51,593 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:07:51,594 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 06:07:51,594 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 06:07:51,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:07:51,594 INFO L82 PathProgramCache]: Analyzing trace with hash -39879136, now seen corresponding path program 1 times [2020-10-20 06:07:51,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:07:51,595 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257907185] [2020-10-20 06:07:51,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:07:51,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:07:51,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:07:51,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:07:51,650 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 06:07:51,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257907185] [2020-10-20 06:07:51,651 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:07:51,651 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 06:07:51,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342257123] [2020-10-20 06:07:51,651 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:07:51,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:07:51,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:07:51,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:07:51,652 INFO L87 Difference]: Start difference. First operand 34 states and 41 transitions. Second operand 4 states. [2020-10-20 06:07:51,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:07:51,743 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2020-10-20 06:07:51,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 06:07:51,743 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-20 06:07:51,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:07:51,744 INFO L225 Difference]: With dead ends: 34 [2020-10-20 06:07:51,744 INFO L226 Difference]: Without dead ends: 33 [2020-10-20 06:07:51,745 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:07:51,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-20 06:07:51,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 29. [2020-10-20 06:07:51,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-20 06:07:51,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2020-10-20 06:07:51,750 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 10 [2020-10-20 06:07:51,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:07:51,750 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2020-10-20 06:07:51,750 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:07:51,751 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2020-10-20 06:07:51,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-20 06:07:51,751 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:07:51,752 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:07:51,752 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 06:07:51,752 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 06:07:51,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:07:51,753 INFO L82 PathProgramCache]: Analyzing trace with hash -905845953, now seen corresponding path program 1 times [2020-10-20 06:07:51,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:07:51,753 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654068028] [2020-10-20 06:07:51,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:07:51,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:07:51,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:07:51,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:07:51,824 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:07:51,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654068028] [2020-10-20 06:07:51,825 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:07:51,825 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 06:07:51,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332951351] [2020-10-20 06:07:51,826 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 06:07:51,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:07:51,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 06:07:51,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:07:51,827 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand 5 states. [2020-10-20 06:07:51,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:07:51,932 INFO L93 Difference]: Finished difference Result 43 states and 45 transitions. [2020-10-20 06:07:51,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 06:07:51,933 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-10-20 06:07:51,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:07:51,934 INFO L225 Difference]: With dead ends: 43 [2020-10-20 06:07:51,934 INFO L226 Difference]: Without dead ends: 43 [2020-10-20 06:07:51,934 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 06:07:51,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-10-20 06:07:51,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 30. [2020-10-20 06:07:51,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-20 06:07:51,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2020-10-20 06:07:51,939 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 16 [2020-10-20 06:07:51,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:07:51,939 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2020-10-20 06:07:51,940 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 06:07:51,940 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2020-10-20 06:07:51,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-20 06:07:51,941 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:07:51,941 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:07:51,941 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-20 06:07:51,941 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 06:07:51,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:07:51,942 INFO L82 PathProgramCache]: Analyzing trace with hash -905845910, now seen corresponding path program 1 times [2020-10-20 06:07:51,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:07:51,943 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749350304] [2020-10-20 06:07:51,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:07:51,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:07:51,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:07:51,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:07:52,003 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:07:52,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749350304] [2020-10-20 06:07:52,004 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:07:52,004 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 06:07:52,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029745293] [2020-10-20 06:07:52,005 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 06:07:52,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:07:52,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 06:07:52,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:07:52,006 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 5 states. [2020-10-20 06:07:52,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:07:52,095 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2020-10-20 06:07:52,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 06:07:52,096 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-10-20 06:07:52,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:07:52,097 INFO L225 Difference]: With dead ends: 35 [2020-10-20 06:07:52,097 INFO L226 Difference]: Without dead ends: 35 [2020-10-20 06:07:52,097 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 06:07:52,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-20 06:07:52,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 30. [2020-10-20 06:07:52,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-20 06:07:52,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2020-10-20 06:07:52,112 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 16 [2020-10-20 06:07:52,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:07:52,112 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2020-10-20 06:07:52,112 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 06:07:52,113 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2020-10-20 06:07:52,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-20 06:07:52,113 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:07:52,114 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:07:52,114 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-20 06:07:52,114 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 06:07:52,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:07:52,115 INFO L82 PathProgramCache]: Analyzing trace with hash -905845909, now seen corresponding path program 1 times [2020-10-20 06:07:52,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:07:52,116 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497739690] [2020-10-20 06:07:52,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:07:52,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:07:52,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:07:52,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:07:52,186 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:07:52,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497739690] [2020-10-20 06:07:52,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:07:52,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 06:07:52,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734808393] [2020-10-20 06:07:52,188 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 06:07:52,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:07:52,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 06:07:52,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:07:52,189 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand 5 states. [2020-10-20 06:07:52,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:07:52,279 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2020-10-20 06:07:52,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 06:07:52,280 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-10-20 06:07:52,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:07:52,281 INFO L225 Difference]: With dead ends: 38 [2020-10-20 06:07:52,281 INFO L226 Difference]: Without dead ends: 38 [2020-10-20 06:07:52,281 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 06:07:52,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-20 06:07:52,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 32. [2020-10-20 06:07:52,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-20 06:07:52,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2020-10-20 06:07:52,286 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 16 [2020-10-20 06:07:52,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:07:52,286 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2020-10-20 06:07:52,286 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 06:07:52,286 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2020-10-20 06:07:52,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-20 06:07:52,287 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:07:52,287 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:07:52,288 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-20 06:07:52,288 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 06:07:52,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:07:52,289 INFO L82 PathProgramCache]: Analyzing trace with hash 1715336483, now seen corresponding path program 1 times [2020-10-20 06:07:52,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:07:52,289 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987335746] [2020-10-20 06:07:52,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:07:52,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:07:52,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:07:52,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:07:52,403 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:07:52,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987335746] [2020-10-20 06:07:52,403 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:07:52,404 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-20 06:07:52,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712055634] [2020-10-20 06:07:52,404 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 06:07:52,404 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:07:52,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 06:07:52,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-20 06:07:52,405 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand 6 states. [2020-10-20 06:07:52,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:07:52,513 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2020-10-20 06:07:52,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 06:07:52,514 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-10-20 06:07:52,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:07:52,515 INFO L225 Difference]: With dead ends: 36 [2020-10-20 06:07:52,515 INFO L226 Difference]: Without dead ends: 36 [2020-10-20 06:07:52,515 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 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 06:07:52,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-20 06:07:52,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2020-10-20 06:07:52,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-20 06:07:52,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2020-10-20 06:07:52,519 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 20 [2020-10-20 06:07:52,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:07:52,520 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2020-10-20 06:07:52,520 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 06:07:52,520 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2020-10-20 06:07:52,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-20 06:07:52,521 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:07:52,521 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:07:52,521 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-20 06:07:52,521 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 06:07:52,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:07:52,522 INFO L82 PathProgramCache]: Analyzing trace with hash 1639972725, now seen corresponding path program 1 times [2020-10-20 06:07:52,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:07:52,522 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923272243] [2020-10-20 06:07:52,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:07:52,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:07:52,538 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:07:52,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:07:52,550 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:07:52,605 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:07:52,605 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 06:07:52,606 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-20 06:07:52,658 WARN L417 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2020-10-20 06:07:52,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 06:07:52 BoogieIcfgContainer [2020-10-20 06:07:52,674 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 06:07:52,674 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 06:07:52,675 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 06:07:52,675 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 06:07:52,676 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:07:50" (3/4) ... [2020-10-20 06:07:52,680 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 06:07:52,680 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 06:07:52,688 INFO L168 Benchmark]: Toolchain (without parser) took 3381.03 ms. Allocated memory was 36.7 MB in the beginning and 62.4 MB in the end (delta: 25.7 MB). Free memory was 17.5 MB in the beginning and 41.3 MB in the end (delta: -23.8 MB). Peak memory consumption was 1.9 MB. Max. memory is 14.3 GB. [2020-10-20 06:07:52,689 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 34.1 MB. Free memory was 10.9 MB in the beginning and 10.8 MB in the end (delta: 47.6 kB). Peak memory consumption was 47.6 kB. Max. memory is 14.3 GB. [2020-10-20 06:07:52,690 INFO L168 Benchmark]: CACSL2BoogieTranslator took 560.79 ms. Allocated memory was 36.7 MB in the beginning and 46.1 MB in the end (delta: 9.4 MB). Free memory was 16.5 MB in the beginning and 27.4 MB in the end (delta: -10.9 MB). Peak memory consumption was 15.6 MB. Max. memory is 14.3 GB. [2020-10-20 06:07:52,691 INFO L168 Benchmark]: Boogie Preprocessor took 64.06 ms. Allocated memory is still 46.1 MB. Free memory was 27.4 MB in the beginning and 24.4 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 14.3 GB. [2020-10-20 06:07:52,694 INFO L168 Benchmark]: RCFGBuilder took 640.96 ms. Allocated memory was 46.1 MB in the beginning and 48.8 MB in the end (delta: 2.6 MB). Free memory was 24.4 MB in the beginning and 15.5 MB in the end (delta: 8.9 MB). Peak memory consumption was 13.2 MB. Max. memory is 14.3 GB. [2020-10-20 06:07:52,696 INFO L168 Benchmark]: TraceAbstraction took 2099.09 ms. Allocated memory was 48.8 MB in the beginning and 62.4 MB in the end (delta: 13.6 MB). Free memory was 14.8 MB in the beginning and 41.9 MB in the end (delta: -27.1 MB). Peak memory consumption was 17.8 MB. Max. memory is 14.3 GB. [2020-10-20 06:07:52,699 INFO L168 Benchmark]: Witness Printer took 5.87 ms. Allocated memory is still 62.4 MB. Free memory was 41.9 MB in the beginning and 41.3 MB in the end (delta: 633.5 kB). Peak memory consumption was 633.5 kB. Max. memory is 14.3 GB. [2020-10-20 06:07:52,706 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 34.1 MB. Free memory was 10.9 MB in the beginning and 10.8 MB in the end (delta: 47.6 kB). Peak memory consumption was 47.6 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 560.79 ms. Allocated memory was 36.7 MB in the beginning and 46.1 MB in the end (delta: 9.4 MB). Free memory was 16.5 MB in the beginning and 27.4 MB in the end (delta: -10.9 MB). Peak memory consumption was 15.6 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 64.06 ms. Allocated memory is still 46.1 MB. Free memory was 27.4 MB in the beginning and 24.4 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 14.3 GB. * RCFGBuilder took 640.96 ms. Allocated memory was 46.1 MB in the beginning and 48.8 MB in the end (delta: 2.6 MB). Free memory was 24.4 MB in the beginning and 15.5 MB in the end (delta: 8.9 MB). Peak memory consumption was 13.2 MB. Max. memory is 14.3 GB. * TraceAbstraction took 2099.09 ms. Allocated memory was 48.8 MB in the beginning and 62.4 MB in the end (delta: 13.6 MB). Free memory was 14.8 MB in the beginning and 41.9 MB in the end (delta: -27.1 MB). Peak memory consumption was 17.8 MB. Max. memory is 14.3 GB. * Witness Printer took 5.87 ms. Allocated memory is still 62.4 MB. Free memory was 41.9 MB in the beginning and 41.3 MB in the end (delta: 633.5 kB). Peak memory consumption was 633.5 kB. 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: 531]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 531. Possible FailurePath: [L532] List t; [L533] List p = 0; VAL [p={0:0}] [L534] COND TRUE __VERIFIER_nondet_int() [L535] t = (List) malloc(sizeof(struct node)) VAL [malloc(sizeof(struct node))={-1:0}, p={0:0}, t={-1:0}] [L536] COND FALSE !(t == 0) VAL [malloc(sizeof(struct node))={-1:0}, p={0:0}, t={-1:0}] [L537] t->h = 1 VAL [malloc(sizeof(struct node))={-1:0}, p={0:0}, t={-1:0}] [L538] t->n = p VAL [malloc(sizeof(struct node))={-1:0}, p={0:0}, t={-1:0}] [L539] p = t VAL [malloc(sizeof(struct node))={-1:0}, p={-1:0}, t={-1:0}] [L534] COND FALSE !(__VERIFIER_nondet_int()) [L541] COND TRUE p!=0 VAL [malloc(sizeof(struct node))={-1:0}, p={-1:0}, t={-1:0}] [L542] EXPR p->h VAL [malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->h=1, t={-1:0}] [L542] COND FALSE !(p->h != 1) [L545] EXPR p->n VAL [malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->n={0:0}, t={-1:0}] [L545] p = p->n [L541] COND FALSE !(p!=0) VAL [malloc(sizeof(struct node))={-1:0}, p={0:0}, t={-1:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 56 locations, 10 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.9s, OverallIterations: 9, TraceHistogramMax: 2, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 175 SDtfs, 224 SDslu, 98 SDs, 0 SdLazy, 458 SolverSat, 37 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 51 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred 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: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 47 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 128 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 99 ConstructedInterpolants, 0 QuantifiedInterpolants, 6454 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 8/8 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 06:07:54,887 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 06:07:54,890 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 06:07:54,925 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 06:07:54,925 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 06:07:54,935 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 06:07:54,938 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 06:07:54,941 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 06:07:54,944 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 06:07:54,947 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 06:07:54,949 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 06:07:54,950 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 06:07:54,951 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 06:07:54,954 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 06:07:54,955 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 06:07:54,957 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 06:07:54,959 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 06:07:54,960 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 06:07:54,962 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 06:07:54,969 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 06:07:54,971 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 06:07:54,972 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 06:07:54,974 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 06:07:54,975 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 06:07:54,986 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 06:07:54,987 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 06:07:54,987 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 06:07:54,988 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 06:07:54,988 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 06:07:54,989 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 06:07:54,990 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 06:07:54,990 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 06:07:54,991 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 06:07:54,992 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 06:07:54,993 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 06:07:54,993 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 06:07:54,994 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 06:07:54,994 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 06:07:54,995 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 06:07:54,995 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 06:07:54,996 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 06:07:54,997 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2020-10-20 06:07:55,019 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 06:07:55,020 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 06:07:55,021 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 06:07:55,021 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 06:07:55,021 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 06:07:55,022 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 06:07:55,022 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 06:07:55,022 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 06:07:55,022 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 06:07:55,023 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 06:07:55,023 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 06:07:55,023 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-20 06:07:55,023 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-20 06:07:55,024 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-20 06:07:55,024 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 06:07:55,024 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-20 06:07:55,024 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-20 06:07:55,025 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-20 06:07:55,025 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 06:07:55,025 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 06:07:55,025 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 06:07:55,026 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 06:07:55,026 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 06:07:55,026 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 06:07:55,026 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 06:07:55,027 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 06:07:55,027 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 06:07:55,027 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-20 06:07:55,027 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-20 06:07:55,028 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 06:07:55,028 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-20 06:07:55,028 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 -> 279a162aa90145a7316b3266460570a8e3cad8e6 [2020-10-20 06:07:55,216 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 06:07:55,229 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 06:07:55,233 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 06:07:55,234 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 06:07:55,235 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 06:07:55,236 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-properties/simple_built_from_end.i [2020-10-20 06:07:55,307 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d2b00169/e8f24302aaf640148d4b6b2ed27f56e4/FLAGb1c1aeff3 [2020-10-20 06:07:55,955 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 06:07:55,956 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-properties/simple_built_from_end.i [2020-10-20 06:07:55,969 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d2b00169/e8f24302aaf640148d4b6b2ed27f56e4/FLAGb1c1aeff3 [2020-10-20 06:07:56,263 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d2b00169/e8f24302aaf640148d4b6b2ed27f56e4 [2020-10-20 06:07:56,267 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 06:07:56,274 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-20 06:07:56,276 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 06:07:56,276 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 06:07:56,280 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 06:07:56,281 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:07:56" (1/1) ... [2020-10-20 06:07:56,284 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11bc35dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:07:56, skipping insertion in model container [2020-10-20 06:07:56,285 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:07:56" (1/1) ... [2020-10-20 06:07:56,293 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 06:07:56,330 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 06:07:56,766 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:07:56,790 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 06:07:56,857 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:07:56,931 INFO L208 MainTranslator]: Completed translation [2020-10-20 06:07:56,931 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:07:56 WrapperNode [2020-10-20 06:07:56,932 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 06:07:56,932 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 06:07:56,932 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 06:07:56,934 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 06:07:56,944 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:07:56" (1/1) ... [2020-10-20 06:07:56,944 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:07:56" (1/1) ... [2020-10-20 06:07:56,962 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:07:56" (1/1) ... [2020-10-20 06:07:56,963 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:07:56" (1/1) ... [2020-10-20 06:07:56,983 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:07:56" (1/1) ... [2020-10-20 06:07:56,988 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:07:56" (1/1) ... [2020-10-20 06:07:56,992 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:07:56" (1/1) ... [2020-10-20 06:07:57,000 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 06:07:57,001 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 06:07:57,001 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 06:07:57,001 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 06:07:57,003 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:07:56" (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 06:07:57,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-20 06:07:57,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 06:07:57,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2020-10-20 06:07:57,065 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-20 06:07:57,065 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-20 06:07:57,065 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-20 06:07:57,065 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-10-20 06:07:57,066 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-10-20 06:07:57,066 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-10-20 06:07:57,066 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-20 06:07:57,066 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-20 06:07:57,066 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-20 06:07:57,067 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-20 06:07:57,067 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-20 06:07:57,067 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-20 06:07:57,067 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-20 06:07:57,067 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 06:07:57,068 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-20 06:07:57,069 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-20 06:07:57,069 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-20 06:07:57,070 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-20 06:07:57,070 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-20 06:07:57,070 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-20 06:07:57,070 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-20 06:07:57,070 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-20 06:07:57,071 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-20 06:07:57,071 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-20 06:07:57,071 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-20 06:07:57,071 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-20 06:07:57,071 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-20 06:07:57,072 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-20 06:07:57,072 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-20 06:07:57,072 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-20 06:07:57,072 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-20 06:07:57,073 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-20 06:07:57,073 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-20 06:07:57,073 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-10-20 06:07:57,073 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-10-20 06:07:57,073 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-10-20 06:07:57,074 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-20 06:07:57,074 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-20 06:07:57,074 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-20 06:07:57,074 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-20 06:07:57,075 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-20 06:07:57,075 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-20 06:07:57,075 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-20 06:07:57,075 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-20 06:07:57,075 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-20 06:07:57,076 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-20 06:07:57,076 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-20 06:07:57,076 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-20 06:07:57,076 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-20 06:07:57,076 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-20 06:07:57,077 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-20 06:07:57,077 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-20 06:07:57,077 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-20 06:07:57,077 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-20 06:07:57,078 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-20 06:07:57,078 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-20 06:07:57,078 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-20 06:07:57,078 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-20 06:07:57,078 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-20 06:07:57,079 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-20 06:07:57,079 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-20 06:07:57,079 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-20 06:07:57,079 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-20 06:07:57,080 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-20 06:07:57,080 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-20 06:07:57,080 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-20 06:07:57,080 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-20 06:07:57,080 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-20 06:07:57,081 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-20 06:07:57,081 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-20 06:07:57,081 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-20 06:07:57,081 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-20 06:07:57,081 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-20 06:07:57,082 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-20 06:07:57,082 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-20 06:07:57,082 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-20 06:07:57,082 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-20 06:07:57,083 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-20 06:07:57,083 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-20 06:07:57,083 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-20 06:07:57,083 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-20 06:07:57,083 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-20 06:07:57,084 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-20 06:07:57,084 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-20 06:07:57,084 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-20 06:07:57,084 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-20 06:07:57,084 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-20 06:07:57,085 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-20 06:07:57,085 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-20 06:07:57,085 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-20 06:07:57,085 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-20 06:07:57,085 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-20 06:07:57,086 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-20 06:07:57,086 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-20 06:07:57,086 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-20 06:07:57,086 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-20 06:07:57,086 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-20 06:07:57,087 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-20 06:07:57,087 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-20 06:07:57,087 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-20 06:07:57,087 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-20 06:07:57,087 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-20 06:07:57,088 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-20 06:07:57,088 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-20 06:07:57,088 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-20 06:07:57,088 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-20 06:07:57,088 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-20 06:07:57,089 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-20 06:07:57,089 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-20 06:07:57,089 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-20 06:07:57,089 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-20 06:07:57,089 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-20 06:07:57,090 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-20 06:07:57,090 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-20 06:07:57,090 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-20 06:07:57,090 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-20 06:07:57,091 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-20 06:07:57,091 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-20 06:07:57,091 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-20 06:07:57,091 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-20 06:07:57,091 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-20 06:07:57,092 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-20 06:07:57,092 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-20 06:07:57,092 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-20 06:07:57,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-10-20 06:07:57,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-20 06:07:57,093 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-20 06:07:57,093 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-20 06:07:57,093 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-20 06:07:57,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-20 06:07:57,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 06:07:57,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2020-10-20 06:07:57,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2020-10-20 06:07:57,095 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2020-10-20 06:07:57,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 06:07:57,505 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-20 06:07:57,668 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 06:07:57,668 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-20 06:07:57,670 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:07:57 BoogieIcfgContainer [2020-10-20 06:07:57,671 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 06:07:57,672 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 06:07:57,672 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 06:07:57,675 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 06:07:57,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 06:07:56" (1/3) ... [2020-10-20 06:07:57,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48c5444 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:07:57, skipping insertion in model container [2020-10-20 06:07:57,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:07:56" (2/3) ... [2020-10-20 06:07:57,678 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48c5444 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:07:57, skipping insertion in model container [2020-10-20 06:07:57,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:07:57" (3/3) ... [2020-10-20 06:07:57,680 INFO L111 eAbstractionObserver]: Analyzing ICFG simple_built_from_end.i [2020-10-20 06:07:57,691 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 06:07:57,699 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2020-10-20 06:07:57,713 INFO L253 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2020-10-20 06:07:57,730 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 06:07:57,730 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-20 06:07:57,731 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 06:07:57,731 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 06:07:57,731 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 06:07:57,731 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 06:07:57,731 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 06:07:57,731 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 06:07:57,759 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2020-10-20 06:07:57,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-20 06:07:57,768 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:07:57,769 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:07:57,769 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 06:07:57,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:07:57,776 INFO L82 PathProgramCache]: Analyzing trace with hash -251734950, now seen corresponding path program 1 times [2020-10-20 06:07:57,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 06:07:57,790 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [502469301] [2020-10-20 06:07:57,790 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 06:07:57,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:07:57,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-20 06:07:57,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:07:57,977 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 06:07:57,978 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 06:07:58,000 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 06:07:58,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [502469301] [2020-10-20 06:07:58,002 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:07:58,002 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-20 06:07:58,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638298670] [2020-10-20 06:07:58,008 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 06:07:58,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 06:07:58,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 06:07:58,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 06:07:58,028 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 2 states. [2020-10-20 06:07:58,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:07:58,047 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2020-10-20 06:07:58,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 06:07:58,049 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-10-20 06:07:58,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:07:58,059 INFO L225 Difference]: With dead ends: 36 [2020-10-20 06:07:58,059 INFO L226 Difference]: Without dead ends: 30 [2020-10-20 06:07:58,061 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 06:07:58,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-20 06:07:58,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-10-20 06:07:58,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-20 06:07:58,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2020-10-20 06:07:58,101 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 9 [2020-10-20 06:07:58,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:07:58,102 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2020-10-20 06:07:58,102 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 06:07:58,102 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2020-10-20 06:07:58,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-20 06:07:58,103 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:07:58,103 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:07:58,316 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-20 06:07:58,318 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 06:07:58,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:07:58,319 INFO L82 PathProgramCache]: Analyzing trace with hash -251735570, now seen corresponding path program 1 times [2020-10-20 06:07:58,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 06:07:58,321 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1432865430] [2020-10-20 06:07:58,321 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 06:07:58,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:07:58,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:07:58,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:07:58,466 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 06:07:58,466 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 06:07:58,475 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 06:07:58,476 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1432865430] [2020-10-20 06:07:58,476 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:07:58,477 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-20 06:07:58,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421035492] [2020-10-20 06:07:58,479 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 06:07:58,479 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 06:07:58,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 06:07:58,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 06:07:58,480 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 3 states. [2020-10-20 06:07:58,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:07:58,555 INFO L93 Difference]: Finished difference Result 42 states and 45 transitions. [2020-10-20 06:07:58,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 06:07:58,573 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-20 06:07:58,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:07:58,577 INFO L225 Difference]: With dead ends: 42 [2020-10-20 06:07:58,577 INFO L226 Difference]: Without dead ends: 41 [2020-10-20 06:07:58,578 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 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 06:07:58,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-20 06:07:58,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 36. [2020-10-20 06:07:58,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-20 06:07:58,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2020-10-20 06:07:58,588 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 9 [2020-10-20 06:07:58,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:07:58,589 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2020-10-20 06:07:58,589 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 06:07:58,589 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2020-10-20 06:07:58,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-20 06:07:58,590 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:07:58,590 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:07:58,796 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-20 06:07:58,797 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 06:07:58,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:07:58,797 INFO L82 PathProgramCache]: Analyzing trace with hash -251735527, now seen corresponding path program 1 times [2020-10-20 06:07:58,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 06:07:58,799 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1051962441] [2020-10-20 06:07:58,799 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 06:07:58,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:07:58,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-20 06:07:58,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:07:58,941 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 06:07:58,942 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 06:07:58,953 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 06:07:58,953 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1051962441] [2020-10-20 06:07:58,954 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:07:58,954 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-10-20 06:07:58,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682082114] [2020-10-20 06:07:58,954 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 06:07:58,955 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 06:07:58,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 06:07:58,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 06:07:58,955 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 3 states. [2020-10-20 06:07:59,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:07:59,019 INFO L93 Difference]: Finished difference Result 40 states and 41 transitions. [2020-10-20 06:07:59,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 06:07:59,020 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-20 06:07:59,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:07:59,021 INFO L225 Difference]: With dead ends: 40 [2020-10-20 06:07:59,021 INFO L226 Difference]: Without dead ends: 39 [2020-10-20 06:07:59,022 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 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 06:07:59,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-20 06:07:59,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 31. [2020-10-20 06:07:59,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-20 06:07:59,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2020-10-20 06:07:59,027 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 9 [2020-10-20 06:07:59,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:07:59,027 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2020-10-20 06:07:59,027 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 06:07:59,027 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2020-10-20 06:07:59,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-20 06:07:59,028 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:07:59,028 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:07:59,240 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-20 06:07:59,241 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 06:07:59,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:07:59,241 INFO L82 PathProgramCache]: Analyzing trace with hash -251734212, now seen corresponding path program 1 times [2020-10-20 06:07:59,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 06:07:59,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1486833043] [2020-10-20 06:07:59,244 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 06:07:59,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:07:59,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-20 06:07:59,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:07:59,404 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 06:07:59,405 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:07:59,409 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:07:59,409 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:07:59,409 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-20 06:07:59,414 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 06:07:59,415 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 06:07:59,431 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 06:07:59,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1486833043] [2020-10-20 06:07:59,432 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:07:59,432 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-20 06:07:59,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525853702] [2020-10-20 06:07:59,433 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 06:07:59,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 06:07:59,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 06:07:59,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 06:07:59,434 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand 3 states. [2020-10-20 06:07:59,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:07:59,489 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2020-10-20 06:07:59,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 06:07:59,489 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-20 06:07:59,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:07:59,490 INFO L225 Difference]: With dead ends: 29 [2020-10-20 06:07:59,490 INFO L226 Difference]: Without dead ends: 29 [2020-10-20 06:07:59,491 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 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 06:07:59,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-20 06:07:59,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-10-20 06:07:59,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-20 06:07:59,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2020-10-20 06:07:59,495 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 9 [2020-10-20 06:07:59,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:07:59,496 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2020-10-20 06:07:59,496 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 06:07:59,496 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2020-10-20 06:07:59,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-20 06:07:59,497 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:07:59,497 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:07:59,706 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-10-20 06:07:59,707 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 06:07:59,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:07:59,707 INFO L82 PathProgramCache]: Analyzing trace with hash -251734211, now seen corresponding path program 1 times [2020-10-20 06:07:59,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 06:07:59,709 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [793677337] [2020-10-20 06:07:59,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 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 06:07:59,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:07:59,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-20 06:07:59,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:07:59,842 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 06:07:59,842 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:07:59,849 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:07:59,849 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:07:59,850 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-10-20 06:07:59,861 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 06:07:59,862 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 06:07:59,929 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 06:07:59,930 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [793677337] [2020-10-20 06:07:59,930 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:07:59,930 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2020-10-20 06:07:59,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4673435] [2020-10-20 06:07:59,931 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:07:59,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 06:07:59,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:07:59,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:07:59,933 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand 4 states. [2020-10-20 06:08:00,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:08:00,011 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2020-10-20 06:08:00,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 06:08:00,013 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-20 06:08:00,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:08:00,014 INFO L225 Difference]: With dead ends: 27 [2020-10-20 06:08:00,014 INFO L226 Difference]: Without dead ends: 27 [2020-10-20 06:08:00,016 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 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 06:08:00,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-20 06:08:00,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-10-20 06:08:00,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-20 06:08:00,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2020-10-20 06:08:00,020 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 9 [2020-10-20 06:08:00,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:08:00,021 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2020-10-20 06:08:00,021 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:08:00,023 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2020-10-20 06:08:00,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-20 06:08:00,023 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:08:00,023 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:08:00,234 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-10-20 06:08:00,235 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 06:08:00,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:08:00,235 INFO L82 PathProgramCache]: Analyzing trace with hash 1208128460, now seen corresponding path program 1 times [2020-10-20 06:08:00,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 06:08:00,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1630277983] [2020-10-20 06:08:00,237 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 06:08:00,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:08:00,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:08:00,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:08:00,357 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:08:00,357 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 06:08:00,365 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:08:00,365 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1630277983] [2020-10-20 06:08:00,365 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:08:00,366 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2020-10-20 06:08:00,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436061503] [2020-10-20 06:08:00,366 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:08:00,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 06:08:00,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:08:00,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:08:00,367 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 4 states. [2020-10-20 06:08:00,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:08:00,476 INFO L93 Difference]: Finished difference Result 41 states and 43 transitions. [2020-10-20 06:08:00,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:08:00,477 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-20 06:08:00,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:08:00,478 INFO L225 Difference]: With dead ends: 41 [2020-10-20 06:08:00,478 INFO L226 Difference]: Without dead ends: 41 [2020-10-20 06:08:00,479 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:08:00,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-20 06:08:00,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 28. [2020-10-20 06:08:00,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-20 06:08:00,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2020-10-20 06:08:00,483 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 14 [2020-10-20 06:08:00,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:08:00,483 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2020-10-20 06:08:00,483 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:08:00,483 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2020-10-20 06:08:00,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-20 06:08:00,484 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:08:00,484 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:08:00,684 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-10-20 06:08:00,685 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 06:08:00,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:08:00,685 INFO L82 PathProgramCache]: Analyzing trace with hash 1208128503, now seen corresponding path program 1 times [2020-10-20 06:08:00,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 06:08:00,686 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1498153071] [2020-10-20 06:08:00,686 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 06:08:00,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:08:00,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:08:00,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:08:00,806 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 06:08:00,806 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:08:00,808 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:08:00,808 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:08:00,809 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-20 06:08:00,819 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:08:00,819 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 06:08:00,833 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:08:00,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1498153071] [2020-10-20 06:08:00,834 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:08:00,834 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-10-20 06:08:00,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620441565] [2020-10-20 06:08:00,834 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:08:00,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 06:08:00,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:08:00,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:08:00,835 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 4 states. [2020-10-20 06:08:00,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:08:00,960 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2020-10-20 06:08:00,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:08:00,961 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-20 06:08:00,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:08:00,962 INFO L225 Difference]: With dead ends: 33 [2020-10-20 06:08:00,962 INFO L226 Difference]: Without dead ends: 33 [2020-10-20 06:08:00,963 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:08:00,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-20 06:08:00,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 28. [2020-10-20 06:08:00,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-20 06:08:00,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2020-10-20 06:08:00,968 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 14 [2020-10-20 06:08:00,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:08:00,968 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2020-10-20 06:08:00,968 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:08:00,968 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2020-10-20 06:08:00,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-20 06:08:00,969 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:08:00,969 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:08:01,170 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-10-20 06:08:01,170 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 06:08:01,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:08:01,171 INFO L82 PathProgramCache]: Analyzing trace with hash 1208128504, now seen corresponding path program 1 times [2020-10-20 06:08:01,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 06:08:01,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [538747090] [2020-10-20 06:08:01,173 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 06:08:01,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:08:01,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-20 06:08:01,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:08:01,291 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 06:08:01,291 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:08:01,296 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:08:01,297 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:08:01,297 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-10-20 06:08:01,317 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:08:01,317 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 06:08:01,410 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:08:01,411 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [538747090] [2020-10-20 06:08:01,411 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:08:01,411 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-10-20 06:08:01,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649193549] [2020-10-20 06:08:01,412 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 06:08:01,412 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 06:08:01,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 06:08:01,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-20 06:08:01,413 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 6 states. [2020-10-20 06:08:01,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:08:01,645 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2020-10-20 06:08:01,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 06:08:01,647 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-10-20 06:08:01,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:08:01,648 INFO L225 Difference]: With dead ends: 36 [2020-10-20 06:08:01,648 INFO L226 Difference]: Without dead ends: 36 [2020-10-20 06:08:01,648 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-20 06:08:01,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-20 06:08:01,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 30. [2020-10-20 06:08:01,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-20 06:08:01,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2020-10-20 06:08:01,658 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 14 [2020-10-20 06:08:01,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:08:01,659 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2020-10-20 06:08:01,659 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 06:08:01,659 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2020-10-20 06:08:01,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-20 06:08:01,660 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:08:01,660 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 06:08:01,867 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-10-20 06:08:01,868 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 06:08:01,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:08:01,869 INFO L82 PathProgramCache]: Analyzing trace with hash -1674350128, now seen corresponding path program 1 times [2020-10-20 06:08:01,869 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 06:08:01,870 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [100785817] [2020-10-20 06:08:01,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 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 06:08:01,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:08:01,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-20 06:08:01,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:08:01,989 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 06:08:01,989 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:08:01,991 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:08:01,991 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:08:01,992 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2020-10-20 06:08:02,018 INFO L350 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2020-10-20 06:08:02,019 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 1 case distinctions, treesize of input 27 treesize of output 11 [2020-10-20 06:08:02,020 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:08:02,022 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:08:02,022 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:08:02,022 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:27, output treesize:7 [2020-10-20 06:08:02,052 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2020-10-20 06:08:02,053 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:08:02,056 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:08:02,056 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 06:08:02,056 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:17, output treesize:3 [2020-10-20 06:08:02,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [100785817] [2020-10-20 06:08:02,067 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-20 06:08:02,067 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2078646306] [2020-10-20 06:08:02,067 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 06:08:02,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:08:02,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-20 06:08:02,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:08:02,299 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 06:08:02,300 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:08:02,305 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:08:02,306 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:08:02,306 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:11 [2020-10-20 06:08:02,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 06:08:02,329 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2020-10-20 06:08:02,329 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:08:02,335 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:08:02,335 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:08:02,335 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:30, output treesize:11 [2020-10-20 06:08:02,361 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2020-10-20 06:08:02,362 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:08:02,365 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:08:02,366 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 06:08:02,366 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:17, output treesize:3 [2020-10-20 06:08:02,368 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:08:02,368 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 06:08:02,416 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-20 06:08:02,422 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:08:02,423 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-20 06:08:02,423 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:28, output treesize:12 [2020-10-20 06:08:02,433 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:08:02,434 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:08:02,434 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 5] imperfect sequences [] total 8 [2020-10-20 06:08:02,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941732831] [2020-10-20 06:08:02,434 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-20 06:08:02,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 06:08:02,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-20 06:08:02,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-20 06:08:02,435 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand 8 states. [2020-10-20 06:08:02,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:08:02,637 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2020-10-20 06:08:02,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 06:08:02,637 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2020-10-20 06:08:02,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:08:02,638 INFO L225 Difference]: With dead ends: 35 [2020-10-20 06:08:02,638 INFO L226 Difference]: Without dead ends: 35 [2020-10-20 06:08:02,638 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 40 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-10-20 06:08:02,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-20 06:08:02,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 30. [2020-10-20 06:08:02,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-20 06:08:02,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2020-10-20 06:08:02,642 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 18 [2020-10-20 06:08:02,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:08:02,643 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2020-10-20 06:08:02,643 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-20 06:08:02,643 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2020-10-20 06:08:02,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-20 06:08:02,644 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:08:02,644 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 06:08:03,048 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 06:08:03,049 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 06:08:03,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:08:03,049 INFO L82 PathProgramCache]: Analyzing trace with hash -361076259, now seen corresponding path program 1 times [2020-10-20 06:08:03,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 06:08:03,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [92419578] [2020-10-20 06:08:03,051 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 06:08:03,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:08:03,160 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:08:03,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:08:03,194 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:08:03,224 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-10-20 06:08:03,224 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 06:08:03,425 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 mathsat -unsat_core_generation=3 [2020-10-20 06:08:03,440 WARN L417 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2020-10-20 06:08:03,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 06:08:03 BoogieIcfgContainer [2020-10-20 06:08:03,454 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 06:08:03,455 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 06:08:03,455 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 06:08:03,455 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 06:08:03,455 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:07:57" (3/4) ... [2020-10-20 06:08:03,459 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 06:08:03,459 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 06:08:03,461 INFO L168 Benchmark]: Toolchain (without parser) took 7191.73 ms. Allocated memory was 41.4 MB in the beginning and 73.4 MB in the end (delta: 32.0 MB). Free memory was 17.9 MB in the beginning and 42.8 MB in the end (delta: -24.9 MB). Peak memory consumption was 7.1 MB. Max. memory is 14.3 GB. [2020-10-20 06:08:03,461 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 30.9 MB. Free memory was 7.8 MB in the beginning and 7.7 MB in the end (delta: 47.7 kB). Peak memory consumption was 47.7 kB. Max. memory is 14.3 GB. [2020-10-20 06:08:03,462 INFO L168 Benchmark]: CACSL2BoogieTranslator took 656.21 ms. Allocated memory was 41.4 MB in the beginning and 44.6 MB in the end (delta: 3.1 MB). Free memory was 17.1 MB in the beginning and 24.6 MB in the end (delta: -7.6 MB). Peak memory consumption was 9.2 MB. Max. memory is 14.3 GB. [2020-10-20 06:08:03,463 INFO L168 Benchmark]: Boogie Preprocessor took 68.03 ms. Allocated memory is still 44.6 MB. Free memory was 24.6 MB in the beginning and 21.4 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 14.3 GB. [2020-10-20 06:08:03,464 INFO L168 Benchmark]: RCFGBuilder took 670.02 ms. Allocated memory was 44.6 MB in the beginning and 47.7 MB in the end (delta: 3.1 MB). Free memory was 21.1 MB in the beginning and 14.7 MB in the end (delta: 6.4 MB). Peak memory consumption was 11.8 MB. Max. memory is 14.3 GB. [2020-10-20 06:08:03,464 INFO L168 Benchmark]: TraceAbstraction took 5782.40 ms. Allocated memory was 47.7 MB in the beginning and 73.4 MB in the end (delta: 25.7 MB). Free memory was 14.4 MB in the beginning and 42.8 MB in the end (delta: -28.4 MB). There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 06:08:03,465 INFO L168 Benchmark]: Witness Printer took 4.61 ms. Allocated memory is still 73.4 MB. Free memory is still 42.8 MB. There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 06:08:03,468 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 30.9 MB. Free memory was 7.8 MB in the beginning and 7.7 MB in the end (delta: 47.7 kB). Peak memory consumption was 47.7 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 656.21 ms. Allocated memory was 41.4 MB in the beginning and 44.6 MB in the end (delta: 3.1 MB). Free memory was 17.1 MB in the beginning and 24.6 MB in the end (delta: -7.6 MB). Peak memory consumption was 9.2 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 68.03 ms. Allocated memory is still 44.6 MB. Free memory was 24.6 MB in the beginning and 21.4 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 14.3 GB. * RCFGBuilder took 670.02 ms. Allocated memory was 44.6 MB in the beginning and 47.7 MB in the end (delta: 3.1 MB). Free memory was 21.1 MB in the beginning and 14.7 MB in the end (delta: 6.4 MB). Peak memory consumption was 11.8 MB. Max. memory is 14.3 GB. * TraceAbstraction took 5782.40 ms. Allocated memory was 47.7 MB in the beginning and 73.4 MB in the end (delta: 25.7 MB). Free memory was 14.4 MB in the beginning and 42.8 MB in the end (delta: -28.4 MB). There was no memory consumed. Max. memory is 14.3 GB. * Witness Printer took 4.61 ms. Allocated memory is still 73.4 MB. Free memory is still 42.8 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: 531]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 531. Possible FailurePath: [L532] List t; [L533] List p = 0; VAL [p={0:0}] [L534] COND TRUE __VERIFIER_nondet_int() [L535] t = (List) malloc(sizeof(struct node)) VAL [malloc(sizeof(struct node))={1:0}, p={0:0}, t={1:0}] [L536] COND FALSE !(t == 0) VAL [malloc(sizeof(struct node))={1:0}, p={0:0}, t={1:0}] [L537] t->h = 1 VAL [malloc(sizeof(struct node))={1:0}, p={0:0}, t={1:0}] [L538] t->n = p VAL [malloc(sizeof(struct node))={1:0}, p={0:0}, t={1:0}] [L539] p = t VAL [malloc(sizeof(struct node))={1:0}, p={1:0}, t={1:0}] [L534] COND FALSE !(__VERIFIER_nondet_int()) [L541] COND TRUE p!=0 VAL [malloc(sizeof(struct node))={1:0}, p={1:0}, t={1:0}] [L542] EXPR p->h VAL [malloc(sizeof(struct node))={1:0}, p={1:0}, p->h=1, t={1:0}] [L542] COND FALSE !(p->h != 1) [L545] EXPR p->n VAL [malloc(sizeof(struct node))={1:0}, p={1:0}, p->n={0:0}, t={1:0}] [L545] p = p->n [L541] COND FALSE !(p!=0) VAL [malloc(sizeof(struct node))={1:0}, p={0:0}, t={1:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 11 procedures, 61 locations, 10 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 5.6s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 198 SDtfs, 202 SDslu, 156 SDs, 0 SdLazy, 228 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 222 GetRequests, 192 SyntacticMatches, 4 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred 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: 0.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 42 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 124 NumberOfCodeBlocks, 124 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 192 ConstructedInterpolants, 0 QuantifiedInterpolants, 8348 SizeOfPredicates, 24 NumberOfNonLiveVariables, 627 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 18 InterpolantComputations, 18 PerfectInterpolantSequences, 8/8 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...