./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety/test-0019-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 20ed64ec 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_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/memsafety/test-0019-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e0c6505355e23ab050a0b1754726876dca60bcf4 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/memsafety/test-0019-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e0c6505355e23ab050a0b1754726876dca60bcf4 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 05:22:41,110 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 05:22:41,111 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 05:22:41,147 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 05:22:41,148 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 05:22:41,151 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 05:22:41,153 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 05:22:41,157 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 05:22:41,160 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 05:22:41,162 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 05:22:41,163 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 05:22:41,166 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 05:22:41,166 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 05:22:41,170 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 05:22:41,172 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 05:22:41,173 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 05:22:41,174 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 05:22:41,174 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 05:22:41,175 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 05:22:41,185 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 05:22:41,186 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 05:22:41,187 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 05:22:41,188 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 05:22:41,188 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 05:22:41,190 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 05:22:41,190 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 05:22:41,190 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 05:22:41,191 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 05:22:41,191 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 05:22:41,192 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 05:22:41,192 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 05:22:41,192 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 05:22:41,193 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 05:22:41,193 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 05:22:41,194 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 05:22:41,194 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 05:22:41,195 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 05:22:41,195 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 05:22:41,195 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 05:22:41,195 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 05:22:41,196 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 05:22:41,197 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-08-27 05:22:41,211 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 05:22:41,212 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 05:22:41,212 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 05:22:41,212 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 05:22:41,213 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 05:22:41,213 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 05:22:41,213 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 05:22:41,214 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 05:22:41,214 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 05:22:41,214 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 05:22:41,214 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 05:22:41,214 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 05:22:41,214 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 05:22:41,215 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-27 05:22:41,215 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-27 05:22:41,215 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-27 05:22:41,215 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-27 05:22:41,215 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-27 05:22:41,215 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 05:22:41,216 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 05:22:41,216 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 05:22:41,216 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 05:22:41,216 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-27 05:22:41,218 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 05:22:41,218 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 05:22:41,218 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-27 05:22:41,218 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 05:22:41,219 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-27 05:22:41,219 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 05:22:41,219 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e0c6505355e23ab050a0b1754726876dca60bcf4 [2021-08-27 05:22:41,504 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 05:22:41,529 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 05:22:41,531 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 05:22:41,532 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 05:22:41,533 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 05:22:41,534 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety/test-0019-2.i [2021-08-27 05:22:41,598 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/327229ca1/5fcb8ea5f8b44cec9ff238111a0eecee/FLAG9f6af764d [2021-08-27 05:22:41,947 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 05:22:41,947 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/test-0019-2.i [2021-08-27 05:22:41,957 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/327229ca1/5fcb8ea5f8b44cec9ff238111a0eecee/FLAG9f6af764d [2021-08-27 05:22:42,333 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/327229ca1/5fcb8ea5f8b44cec9ff238111a0eecee [2021-08-27 05:22:42,335 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 05:22:42,336 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-27 05:22:42,337 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 05:22:42,337 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 05:22:42,339 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 05:22:42,340 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 05:22:42" (1/1) ... [2021-08-27 05:22:42,341 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f46fd0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:22:42, skipping insertion in model container [2021-08-27 05:22:42,341 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 05:22:42" (1/1) ... [2021-08-27 05:22:42,345 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 05:22:42,371 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 05:22:42,598 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 05:22:42,605 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 05:22:42,639 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 05:22:42,660 INFO L208 MainTranslator]: Completed translation [2021-08-27 05:22:42,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:22:42 WrapperNode [2021-08-27 05:22:42,660 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 05:22:42,661 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 05:22:42,661 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 05:22:42,661 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 05:22:42,668 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:22:42" (1/1) ... [2021-08-27 05:22:42,669 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:22:42" (1/1) ... [2021-08-27 05:22:42,692 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:22:42" (1/1) ... [2021-08-27 05:22:42,692 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:22:42" (1/1) ... [2021-08-27 05:22:42,709 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:22:42" (1/1) ... [2021-08-27 05:22:42,713 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:22:42" (1/1) ... [2021-08-27 05:22:42,717 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:22:42" (1/1) ... [2021-08-27 05:22:42,728 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 05:22:42,729 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 05:22:42,729 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 05:22:42,729 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 05:22:42,730 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:22:42" (1/1) ... [2021-08-27 05:22:42,735 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 05:22:42,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 05:22:42,754 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-27 05:22:42,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-27 05:22:42,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-08-27 05:22:42,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 05:22:42,791 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-08-27 05:22:42,791 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-08-27 05:22:42,791 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-08-27 05:22:42,791 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-08-27 05:22:42,791 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-08-27 05:22:42,792 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-08-27 05:22:42,792 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_data [2021-08-27 05:22:42,792 INFO L138 BoogieDeclarations]: Found implementation of procedure free_data [2021-08-27 05:22:42,792 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-08-27 05:22:42,793 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-08-27 05:22:42,793 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-08-27 05:22:42,793 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-08-27 05:22:42,793 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-08-27 05:22:42,793 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-08-27 05:22:42,793 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 05:22:42,794 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-08-27 05:22:42,794 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-08-27 05:22:42,794 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-08-27 05:22:42,794 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-08-27 05:22:42,794 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-08-27 05:22:42,794 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-08-27 05:22:42,794 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-08-27 05:22:42,794 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-08-27 05:22:42,795 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-08-27 05:22:42,795 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-08-27 05:22:42,795 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-08-27 05:22:42,795 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-08-27 05:22:42,795 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-08-27 05:22:42,795 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-08-27 05:22:42,795 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-08-27 05:22:42,795 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-08-27 05:22:42,795 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-08-27 05:22:42,796 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-08-27 05:22:42,796 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-08-27 05:22:42,796 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-08-27 05:22:42,796 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-08-27 05:22:42,796 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-08-27 05:22:42,796 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-08-27 05:22:42,796 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-08-27 05:22:42,796 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-08-27 05:22:42,797 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-08-27 05:22:42,797 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-08-27 05:22:42,797 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-08-27 05:22:42,797 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-08-27 05:22:42,797 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-08-27 05:22:42,797 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-08-27 05:22:42,798 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-08-27 05:22:42,798 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-08-27 05:22:42,798 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-08-27 05:22:42,799 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-08-27 05:22:42,799 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-08-27 05:22:42,799 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-08-27 05:22:42,799 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-08-27 05:22:42,799 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-08-27 05:22:42,799 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-08-27 05:22:42,800 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-08-27 05:22:42,800 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-08-27 05:22:42,800 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-08-27 05:22:42,800 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-08-27 05:22:42,800 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-08-27 05:22:42,800 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-08-27 05:22:42,800 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-08-27 05:22:42,800 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-08-27 05:22:42,800 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-08-27 05:22:42,801 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-08-27 05:22:42,801 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-08-27 05:22:42,802 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-08-27 05:22:42,802 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-08-27 05:22:42,802 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-08-27 05:22:42,802 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-08-27 05:22:42,803 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-08-27 05:22:42,803 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-08-27 05:22:42,803 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-08-27 05:22:42,803 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-08-27 05:22:42,803 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-08-27 05:22:42,803 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-08-27 05:22:42,803 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-08-27 05:22:42,803 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-08-27 05:22:42,804 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-08-27 05:22:42,804 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-08-27 05:22:42,804 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-08-27 05:22:42,804 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-08-27 05:22:42,804 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-08-27 05:22:42,804 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-08-27 05:22:42,805 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-08-27 05:22:42,805 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-08-27 05:22:42,805 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-08-27 05:22:42,805 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-08-27 05:22:42,805 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-08-27 05:22:42,805 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-08-27 05:22:42,805 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-08-27 05:22:42,805 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-08-27 05:22:42,806 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-08-27 05:22:42,806 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-08-27 05:22:42,806 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-08-27 05:22:42,806 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-08-27 05:22:42,806 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-08-27 05:22:42,806 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-08-27 05:22:42,806 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-08-27 05:22:42,806 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-08-27 05:22:42,806 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-08-27 05:22:42,807 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-08-27 05:22:42,807 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-08-27 05:22:42,807 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-08-27 05:22:42,807 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-08-27 05:22:42,807 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-08-27 05:22:42,807 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-08-27 05:22:42,808 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-08-27 05:22:42,808 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-08-27 05:22:42,808 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-08-27 05:22:42,808 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-08-27 05:22:42,809 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-08-27 05:22:42,820 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-08-27 05:22:42,820 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-08-27 05:22:42,821 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-08-27 05:22:42,821 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-08-27 05:22:42,821 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-08-27 05:22:42,821 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-08-27 05:22:42,821 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-08-27 05:22:42,821 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-08-27 05:22:42,821 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-08-27 05:22:42,821 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_data [2021-08-27 05:22:42,822 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-27 05:22:42,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-27 05:22:42,822 INFO L130 BoogieDeclarations]: Found specification of procedure free_data [2021-08-27 05:22:42,822 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-27 05:22:42,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-27 05:22:42,823 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-08-27 05:22:42,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-08-27 05:22:42,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 05:22:42,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 05:22:42,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-27 05:22:42,826 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-27 05:22:43,302 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 05:22:43,302 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-08-27 05:22:43,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 05:22:43 BoogieIcfgContainer [2021-08-27 05:22:43,304 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 05:22:43,305 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-27 05:22:43,305 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-27 05:22:43,307 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-27 05:22:43,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 05:22:42" (1/3) ... [2021-08-27 05:22:43,308 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e58b257 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 05:22:43, skipping insertion in model container [2021-08-27 05:22:43,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:22:42" (2/3) ... [2021-08-27 05:22:43,308 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e58b257 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 05:22:43, skipping insertion in model container [2021-08-27 05:22:43,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 05:22:43" (3/3) ... [2021-08-27 05:22:43,309 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0019-2.i [2021-08-27 05:22:43,312 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-27 05:22:43,313 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2021-08-27 05:22:43,339 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-27 05:22:43,349 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-27 05:22:43,349 INFO L340 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2021-08-27 05:22:43,358 INFO L276 IsEmpty]: Start isEmpty. Operand has 55 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 46 states have internal predecessors, (47), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-08-27 05:22:43,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-27 05:22:43,364 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:22:43,364 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:22:43,364 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting alloc_dataErr0REQUIRES_VIOLATION === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr0REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION (and 15 more)] === [2021-08-27 05:22:43,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:22:43,368 INFO L82 PathProgramCache]: Analyzing trace with hash -1420223000, now seen corresponding path program 1 times [2021-08-27 05:22:43,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:22:43,376 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007104418] [2021-08-27 05:22:43,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:22:43,377 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:22:43,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:22:43,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 05:22:43,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:22:43,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:22:43,625 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:22:43,625 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007104418] [2021-08-27 05:22:43,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007104418] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 05:22:43,626 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:22:43,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-27 05:22:43,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533585451] [2021-08-27 05:22:43,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-27 05:22:43,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 05:22:43,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 05:22:43,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-27 05:22:43,641 INFO L87 Difference]: Start difference. First operand has 55 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 46 states have internal predecessors, (47), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 6 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:22:43,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:22:43,825 INFO L93 Difference]: Finished difference Result 62 states and 62 transitions. [2021-08-27 05:22:43,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-27 05:22:43,827 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2021-08-27 05:22:43,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:22:43,831 INFO L225 Difference]: With dead ends: 62 [2021-08-27 05:22:43,831 INFO L226 Difference]: Without dead ends: 59 [2021-08-27 05:22:43,832 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 78.3ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-08-27 05:22:43,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-08-27 05:22:43,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 50. [2021-08-27 05:22:43,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 26 states have (on average 1.6538461538461537) internal successors, (43), 42 states have internal predecessors, (43), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 05:22:43,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2021-08-27 05:22:43,853 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 9 [2021-08-27 05:22:43,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:22:43,854 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2021-08-27 05:22:43,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:22:43,854 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2021-08-27 05:22:43,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-27 05:22:43,854 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:22:43,855 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:22:43,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-27 05:22:43,855 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting alloc_dataErr1REQUIRES_VIOLATION === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr0REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION (and 15 more)] === [2021-08-27 05:22:43,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:22:43,856 INFO L82 PathProgramCache]: Analyzing trace with hash -1420222999, now seen corresponding path program 1 times [2021-08-27 05:22:43,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:22:43,856 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842244110] [2021-08-27 05:22:43,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:22:43,856 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:22:43,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:22:43,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 05:22:43,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:22:43,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:22:43,962 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:22:43,962 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842244110] [2021-08-27 05:22:43,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842244110] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 05:22:43,963 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:22:43,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-27 05:22:43,963 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571354320] [2021-08-27 05:22:43,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-27 05:22:43,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 05:22:43,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 05:22:43,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-27 05:22:43,965 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand has 6 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:22:44,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:22:44,115 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions. [2021-08-27 05:22:44,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-27 05:22:44,115 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2021-08-27 05:22:44,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:22:44,116 INFO L225 Difference]: With dead ends: 58 [2021-08-27 05:22:44,117 INFO L226 Difference]: Without dead ends: 58 [2021-08-27 05:22:44,117 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 74.4ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-08-27 05:22:44,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-08-27 05:22:44,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 49. [2021-08-27 05:22:44,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 41 states have internal predecessors, (42), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 05:22:44,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2021-08-27 05:22:44,121 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 9 [2021-08-27 05:22:44,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:22:44,121 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2021-08-27 05:22:44,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:22:44,122 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2021-08-27 05:22:44,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-27 05:22:44,122 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:22:44,122 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:22:44,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-27 05:22:44,123 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting alloc_dataErr3REQUIRES_VIOLATION === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr0REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION (and 15 more)] === [2021-08-27 05:22:44,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:22:44,123 INFO L82 PathProgramCache]: Analyzing trace with hash 965296970, now seen corresponding path program 1 times [2021-08-27 05:22:44,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:22:44,124 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944607865] [2021-08-27 05:22:44,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:22:44,124 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:22:44,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:22:44,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 05:22:44,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:22:44,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:22:44,247 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:22:44,247 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944607865] [2021-08-27 05:22:44,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944607865] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 05:22:44,251 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:22:44,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-27 05:22:44,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997053798] [2021-08-27 05:22:44,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-27 05:22:44,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 05:22:44,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-27 05:22:44,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-27 05:22:44,253 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand has 7 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:22:44,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:22:44,419 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2021-08-27 05:22:44,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-27 05:22:44,426 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-08-27 05:22:44,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:22:44,426 INFO L225 Difference]: With dead ends: 57 [2021-08-27 05:22:44,426 INFO L226 Difference]: Without dead ends: 57 [2021-08-27 05:22:44,427 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 70.6ms TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-08-27 05:22:44,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-08-27 05:22:44,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 48. [2021-08-27 05:22:44,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 26 states have (on average 1.5769230769230769) internal successors, (41), 40 states have internal predecessors, (41), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 05:22:44,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 48 transitions. [2021-08-27 05:22:44,430 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 48 transitions. Word has length 11 [2021-08-27 05:22:44,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:22:44,430 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 48 transitions. [2021-08-27 05:22:44,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:22:44,430 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 48 transitions. [2021-08-27 05:22:44,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-08-27 05:22:44,431 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:22:44,431 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:22:44,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-27 05:22:44,431 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting free_dataErr0REQUIRES_VIOLATION === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr0REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION (and 15 more)] === [2021-08-27 05:22:44,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:22:44,432 INFO L82 PathProgramCache]: Analyzing trace with hash -2075049684, now seen corresponding path program 1 times [2021-08-27 05:22:44,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:22:44,432 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495547525] [2021-08-27 05:22:44,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:22:44,432 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:22:44,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:22:44,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 05:22:44,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:22:44,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-27 05:22:44,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:22:44,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:22:44,569 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:22:44,569 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495547525] [2021-08-27 05:22:44,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495547525] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 05:22:44,570 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:22:44,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-27 05:22:44,570 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449824674] [2021-08-27 05:22:44,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-27 05:22:44,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 05:22:44,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-27 05:22:44,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-27 05:22:44,572 INFO L87 Difference]: Start difference. First operand 48 states and 48 transitions. Second operand has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-27 05:22:44,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:22:44,856 INFO L93 Difference]: Finished difference Result 52 states and 52 transitions. [2021-08-27 05:22:44,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-27 05:22:44,857 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2021-08-27 05:22:44,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:22:44,858 INFO L225 Difference]: With dead ends: 52 [2021-08-27 05:22:44,858 INFO L226 Difference]: Without dead ends: 52 [2021-08-27 05:22:44,858 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 175.9ms TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-08-27 05:22:44,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-08-27 05:22:44,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 46. [2021-08-27 05:22:44,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 38 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 05:22:44,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 47 transitions. [2021-08-27 05:22:44,861 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 47 transitions. Word has length 17 [2021-08-27 05:22:44,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:22:44,862 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 47 transitions. [2021-08-27 05:22:44,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-27 05:22:44,862 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 47 transitions. [2021-08-27 05:22:44,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-08-27 05:22:44,862 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:22:44,862 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:22:44,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-27 05:22:44,863 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting free_dataErr1REQUIRES_VIOLATION === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr0REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION (and 15 more)] === [2021-08-27 05:22:44,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:22:44,863 INFO L82 PathProgramCache]: Analyzing trace with hash -2075049683, now seen corresponding path program 1 times [2021-08-27 05:22:44,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:22:44,863 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783445859] [2021-08-27 05:22:44,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:22:44,863 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:22:44,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:22:44,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 05:22:44,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:22:44,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-27 05:22:44,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:22:45,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:22:45,037 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:22:45,037 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783445859] [2021-08-27 05:22:45,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783445859] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 05:22:45,037 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:22:45,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-08-27 05:22:45,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089430431] [2021-08-27 05:22:45,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-27 05:22:45,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 05:22:45,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-27 05:22:45,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-08-27 05:22:45,038 INFO L87 Difference]: Start difference. First operand 46 states and 47 transitions. Second operand has 11 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-27 05:22:45,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:22:45,344 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2021-08-27 05:22:45,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-27 05:22:45,346 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2021-08-27 05:22:45,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:22:45,350 INFO L225 Difference]: With dead ends: 45 [2021-08-27 05:22:45,350 INFO L226 Difference]: Without dead ends: 45 [2021-08-27 05:22:45,350 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 222.0ms TimeCoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2021-08-27 05:22:45,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-08-27 05:22:45,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 42. [2021-08-27 05:22:45,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 34 states have internal predecessors, (35), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 05:22:45,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2021-08-27 05:22:45,361 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 17 [2021-08-27 05:22:45,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:22:45,361 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2021-08-27 05:22:45,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-27 05:22:45,362 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2021-08-27 05:22:45,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-08-27 05:22:45,363 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:22:45,363 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:22:45,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-27 05:22:45,363 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting free_dataErr4ASSERT_VIOLATIONMEMORY_FREE === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr0REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION (and 15 more)] === [2021-08-27 05:22:45,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:22:45,364 INFO L82 PathProgramCache]: Analyzing trace with hash -1129452196, now seen corresponding path program 1 times [2021-08-27 05:22:45,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:22:45,365 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76750103] [2021-08-27 05:22:45,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:22:45,365 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:22:45,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:22:45,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 05:22:45,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:22:45,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-27 05:22:45,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:22:45,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:22:45,592 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:22:45,592 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76750103] [2021-08-27 05:22:45,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76750103] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 05:22:45,592 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:22:45,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-08-27 05:22:45,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766913259] [2021-08-27 05:22:45,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-27 05:22:45,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 05:22:45,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-27 05:22:45,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2021-08-27 05:22:45,593 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand has 12 states, 10 states have (on average 1.6) internal successors, (16), 8 states have internal predecessors, (16), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-27 05:22:45,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:22:45,916 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2021-08-27 05:22:45,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-27 05:22:45,917 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 1.6) internal successors, (16), 8 states have internal predecessors, (16), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2021-08-27 05:22:45,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:22:45,918 INFO L225 Difference]: With dead ends: 44 [2021-08-27 05:22:45,918 INFO L226 Difference]: Without dead ends: 44 [2021-08-27 05:22:45,919 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 269.8ms TimeCoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2021-08-27 05:22:45,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-08-27 05:22:45,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 41. [2021-08-27 05:22:45,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 33 states have internal predecessors, (34), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 05:22:45,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2021-08-27 05:22:45,931 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 22 [2021-08-27 05:22:45,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:22:45,931 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2021-08-27 05:22:45,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 1.6) internal successors, (16), 8 states have internal predecessors, (16), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-27 05:22:45,931 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2021-08-27 05:22:45,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-08-27 05:22:45,932 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:22:45,932 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:22:45,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-27 05:22:45,932 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting free_dataErr5ASSERT_VIOLATIONMEMORY_FREE === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr0REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION (and 15 more)] === [2021-08-27 05:22:45,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:22:45,933 INFO L82 PathProgramCache]: Analyzing trace with hash -653279632, now seen corresponding path program 1 times [2021-08-27 05:22:45,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:22:45,933 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155722541] [2021-08-27 05:22:45,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:22:45,936 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:22:45,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:22:46,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 05:22:46,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:22:46,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-27 05:22:46,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:22:46,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:22:46,103 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:22:46,103 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155722541] [2021-08-27 05:22:46,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155722541] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 05:22:46,103 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:22:46,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-08-27 05:22:46,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63783193] [2021-08-27 05:22:46,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-27 05:22:46,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 05:22:46,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-27 05:22:46,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2021-08-27 05:22:46,104 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand has 12 states, 10 states have (on average 1.7) internal successors, (17), 8 states have internal predecessors, (17), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-27 05:22:46,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:22:46,435 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2021-08-27 05:22:46,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-08-27 05:22:46,435 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 1.7) internal successors, (17), 8 states have internal predecessors, (17), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2021-08-27 05:22:46,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:22:46,435 INFO L225 Difference]: With dead ends: 43 [2021-08-27 05:22:46,436 INFO L226 Difference]: Without dead ends: 43 [2021-08-27 05:22:46,436 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 254.9ms TimeCoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2021-08-27 05:22:46,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-08-27 05:22:46,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 40. [2021-08-27 05:22:46,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 32 states have internal predecessors, (33), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 05:22:46,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2021-08-27 05:22:46,438 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 23 [2021-08-27 05:22:46,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:22:46,438 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2021-08-27 05:22:46,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 1.7) internal successors, (17), 8 states have internal predecessors, (17), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-27 05:22:46,438 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2021-08-27 05:22:46,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-08-27 05:22:46,439 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:22:46,439 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:22:46,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-27 05:22:46,439 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting free_dataErr6ASSERT_VIOLATIONMEMORY_FREE === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr0REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION (and 15 more)] === [2021-08-27 05:22:46,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:22:46,440 INFO L82 PathProgramCache]: Analyzing trace with hash 1223167966, now seen corresponding path program 1 times [2021-08-27 05:22:46,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:22:46,440 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414945342] [2021-08-27 05:22:46,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:22:46,440 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:22:46,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:22:46,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 05:22:46,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:22:46,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-27 05:22:46,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:22:46,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:22:46,579 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:22:46,579 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414945342] [2021-08-27 05:22:46,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414945342] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 05:22:46,579 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:22:46,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-08-27 05:22:46,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534495206] [2021-08-27 05:22:46,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-27 05:22:46,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 05:22:46,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-27 05:22:46,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2021-08-27 05:22:46,581 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand has 12 states, 10 states have (on average 1.8) internal successors, (18), 8 states have internal predecessors, (18), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-27 05:22:46,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:22:46,844 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2021-08-27 05:22:46,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-27 05:22:46,845 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 1.8) internal successors, (18), 8 states have internal predecessors, (18), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2021-08-27 05:22:46,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:22:46,845 INFO L225 Difference]: With dead ends: 42 [2021-08-27 05:22:46,845 INFO L226 Difference]: Without dead ends: 42 [2021-08-27 05:22:46,846 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 205.3ms TimeCoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2021-08-27 05:22:46,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-08-27 05:22:46,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 39. [2021-08-27 05:22:46,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 31 states have internal predecessors, (32), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 05:22:46,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2021-08-27 05:22:46,847 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 24 [2021-08-27 05:22:46,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:22:46,847 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2021-08-27 05:22:46,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 1.8) internal successors, (18), 8 states have internal predecessors, (18), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-27 05:22:46,847 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2021-08-27 05:22:46,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-27 05:22:46,848 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:22:46,848 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:22:46,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-27 05:22:46,848 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting free_dataErr7ASSERT_VIOLATIONMEMORY_FREE === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr0REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION (and 15 more)] === [2021-08-27 05:22:46,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:22:46,848 INFO L82 PathProgramCache]: Analyzing trace with hash -736498638, now seen corresponding path program 1 times [2021-08-27 05:22:46,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:22:46,848 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523647209] [2021-08-27 05:22:46,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:22:46,849 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:22:46,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:22:46,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 05:22:46,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:22:46,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-27 05:22:46,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:22:46,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:22:46,905 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:22:46,905 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523647209] [2021-08-27 05:22:46,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523647209] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 05:22:46,905 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:22:46,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-27 05:22:46,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888564646] [2021-08-27 05:22:46,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-27 05:22:46,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 05:22:46,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 05:22:46,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-27 05:22:46,906 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-27 05:22:47,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:22:47,045 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2021-08-27 05:22:47,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-27 05:22:47,045 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 25 [2021-08-27 05:22:47,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:22:47,046 INFO L225 Difference]: With dead ends: 41 [2021-08-27 05:22:47,046 INFO L226 Difference]: Without dead ends: 41 [2021-08-27 05:22:47,048 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 96.2ms TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-08-27 05:22:47,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-08-27 05:22:47,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 38. [2021-08-27 05:22:47,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 30 states have internal predecessors, (31), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 05:22:47,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 38 transitions. [2021-08-27 05:22:47,051 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 38 transitions. Word has length 25 [2021-08-27 05:22:47,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:22:47,052 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 38 transitions. [2021-08-27 05:22:47,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-27 05:22:47,052 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2021-08-27 05:22:47,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-08-27 05:22:47,052 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:22:47,052 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:22:47,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-27 05:22:47,053 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting free_dataErr8ASSERT_VIOLATIONMEMORY_FREE === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr0REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION (and 15 more)] === [2021-08-27 05:22:47,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:22:47,053 INFO L82 PathProgramCache]: Analyzing trace with hash -1356621216, now seen corresponding path program 1 times [2021-08-27 05:22:47,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:22:47,053 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143191374] [2021-08-27 05:22:47,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:22:47,054 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:22:47,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:22:47,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 05:22:47,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:22:47,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-27 05:22:47,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:22:47,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:22:47,274 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:22:47,274 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143191374] [2021-08-27 05:22:47,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143191374] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 05:22:47,275 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:22:47,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-08-27 05:22:47,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507046072] [2021-08-27 05:22:47,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-27 05:22:47,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 05:22:47,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-27 05:22:47,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-08-27 05:22:47,276 INFO L87 Difference]: Start difference. First operand 38 states and 38 transitions. Second operand has 15 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 11 states have internal predecessors, (20), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-27 05:22:47,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:22:47,624 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2021-08-27 05:22:47,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-08-27 05:22:47,625 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 11 states have internal predecessors, (20), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 26 [2021-08-27 05:22:47,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:22:47,625 INFO L225 Difference]: With dead ends: 40 [2021-08-27 05:22:47,625 INFO L226 Difference]: Without dead ends: 40 [2021-08-27 05:22:47,626 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 315.5ms TimeCoverageRelationStatistics Valid=107, Invalid=445, Unknown=0, NotChecked=0, Total=552 [2021-08-27 05:22:47,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-08-27 05:22:47,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 37. [2021-08-27 05:22:47,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 29 states have internal predecessors, (30), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 05:22:47,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2021-08-27 05:22:47,627 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 26 [2021-08-27 05:22:47,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:22:47,628 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2021-08-27 05:22:47,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 11 states have internal predecessors, (20), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-27 05:22:47,628 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2021-08-27 05:22:47,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-08-27 05:22:47,636 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:22:47,637 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:22:47,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-08-27 05:22:47,637 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr0REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION (and 15 more)] === [2021-08-27 05:22:47,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:22:47,638 INFO L82 PathProgramCache]: Analyzing trace with hash 849725517, now seen corresponding path program 1 times [2021-08-27 05:22:47,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:22:47,640 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391494746] [2021-08-27 05:22:47,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:22:47,642 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:22:47,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 05:22:47,667 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 05:22:47,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 05:22:47,723 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 05:22:47,724 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-08-27 05:22:47,724 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0ENSURES_VIOLATIONMEMORY_LEAK [2021-08-27 05:22:47,726 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_dataErr0REQUIRES_VIOLATION [2021-08-27 05:22:47,726 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_dataErr1REQUIRES_VIOLATION [2021-08-27 05:22:47,726 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_dataErr2REQUIRES_VIOLATION [2021-08-27 05:22:47,726 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_dataErr3REQUIRES_VIOLATION [2021-08-27 05:22:47,726 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr0REQUIRES_VIOLATION [2021-08-27 05:22:47,726 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr1REQUIRES_VIOLATION [2021-08-27 05:22:47,726 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr2REQUIRES_VIOLATION [2021-08-27 05:22:47,726 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr3REQUIRES_VIOLATION [2021-08-27 05:22:47,727 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr4ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:22:47,727 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr5ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:22:47,727 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr6ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:22:47,727 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr7ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:22:47,727 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr8ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:22:47,727 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr9ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:22:47,727 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr10REQUIRES_VIOLATION [2021-08-27 05:22:47,727 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr11REQUIRES_VIOLATION [2021-08-27 05:22:47,727 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr12REQUIRES_VIOLATION [2021-08-27 05:22:47,728 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr13REQUIRES_VIOLATION [2021-08-27 05:22:47,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-08-27 05:22:47,733 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-27 05:22:47,751 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2021-08-27 05:22:47,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 05:22:47 BoogieIcfgContainer [2021-08-27 05:22:47,765 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-27 05:22:47,765 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 05:22:47,765 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 05:22:47,766 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 05:22:47,766 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 05:22:43" (3/4) ... [2021-08-27 05:22:47,768 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-27 05:22:47,768 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 05:22:47,769 INFO L168 Benchmark]: Toolchain (without parser) took 5432.61 ms. Allocated memory was 56.6 MB in the beginning and 146.8 MB in the end (delta: 90.2 MB). Free memory was 34.4 MB in the beginning and 112.9 MB in the end (delta: -78.4 MB). Peak memory consumption was 12.4 MB. Max. memory is 16.1 GB. [2021-08-27 05:22:47,769 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 56.6 MB. Free memory was 38.9 MB in the beginning and 38.8 MB in the end (delta: 42.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 05:22:47,769 INFO L168 Benchmark]: CACSL2BoogieTranslator took 324.09 ms. Allocated memory is still 56.6 MB. Free memory was 34.3 MB in the beginning and 34.2 MB in the end (delta: 86.6 kB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-08-27 05:22:47,770 INFO L168 Benchmark]: Boogie Preprocessor took 67.08 ms. Allocated memory is still 56.6 MB. Free memory was 34.2 MB in the beginning and 31.8 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 05:22:47,770 INFO L168 Benchmark]: RCFGBuilder took 574.91 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 31.8 MB in the beginning and 33.3 MB in the end (delta: -1.4 MB). Peak memory consumption was 15.7 MB. Max. memory is 16.1 GB. [2021-08-27 05:22:47,770 INFO L168 Benchmark]: TraceAbstraction took 4460.31 ms. Allocated memory was 69.2 MB in the beginning and 146.8 MB in the end (delta: 77.6 MB). Free memory was 32.9 MB in the beginning and 112.9 MB in the end (delta: -79.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 05:22:47,770 INFO L168 Benchmark]: Witness Printer took 2.55 ms. Allocated memory is still 146.8 MB. Free memory is still 112.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 05:22:47,771 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 56.6 MB. Free memory was 38.9 MB in the beginning and 38.8 MB in the end (delta: 42.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 324.09 ms. Allocated memory is still 56.6 MB. Free memory was 34.3 MB in the beginning and 34.2 MB in the end (delta: 86.6 kB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 67.08 ms. Allocated memory is still 56.6 MB. Free memory was 34.2 MB in the beginning and 31.8 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 574.91 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 31.8 MB in the beginning and 33.3 MB in the end (delta: -1.4 MB). Peak memory consumption was 15.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4460.31 ms. Allocated memory was 69.2 MB in the beginning and 146.8 MB in the end (delta: 77.6 MB). Free memory was 32.9 MB in the beginning and 112.9 MB in the end (delta: -79.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 2.55 ms. Allocated memory is still 146.8 MB. Free memory is still 112.9 MB. There was no memory consumed. Max. memory is 16.1 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: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 543]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 543. Possible FailurePath: [L544] TData data; VAL [data={3:0}] [L545] CALL alloc_data(&data) VAL [pdata={3:0}] [L529] pdata->lo = malloc(16) VAL [malloc(16)={-1:0}, pdata={3:0}, pdata={3:0}] [L530] pdata->hi = malloc(24) VAL [malloc(24)={-2:0}, pdata={3:0}, pdata={3:0}] [L545] RET alloc_data(&data) VAL [data={3:0}] [L546] CALL free_data(&data) VAL [data={3:0}] [L534] EXPR data->lo VAL [data={3:0}, data={3:0}, data->lo={-1:0}] [L534] void *lo = data->lo; [L535] EXPR data->hi VAL [data={3:0}, data={3:0}, data->hi={-2:0}, lo={-1:0}] [L535] void *hi = data->hi; [L536] COND FALSE !(lo == hi) VAL [data={3:0}, data={3:0}, hi={-2:0}, lo={-1:0}] [L540] data->lo = (void *) 0 VAL [data={3:0}, data={3:0}, hi={-2:0}, lo={-1:0}] [L541] data->hi = (void *) 0 VAL [data={3:0}, data={3:0}, hi={-2:0}, lo={-1:0}] [L546] RET free_data(&data) VAL [data={3:0}] [L547] return 0; [L547] return 0; VAL [\result=0] - UnprovableResult [Line: 529]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 529]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 530]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 530]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 534]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 534]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 535]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 535]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 537]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 537]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 537]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 11 procedures, 73 locations, 19 error locations. Started 1 CEGAR loops. OverallTime: 4392.8ms, OverallIterations: 11, TraceHistogramMax: 1, EmptinessCheckTime: 20.1ms, AutomataDifference: 2542.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 6.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 231 SDtfs, 553 SDslu, 591 SDs, 0 SdLazy, 1758 SolverSat, 163 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1020.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 165 GetRequests, 29 SyntacticMatches, 4 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 1763.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=55occurred in iteration=0, InterpolantAutomatonStates: 101, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 53.2ms AutomataMinimizationTime, 10 MinimizatonAttempts, 51 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 21.8ms SsaConstructionTime, 139.5ms SatisfiabilityAnalysisTime, 1372.2ms InterpolantComputationTime, 210 NumberOfCodeBlocks, 210 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 173 ConstructedInterpolants, 0 QuantifiedInterpolants, 1162 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-08-27 05:22:47,797 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 05:22:49,353 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 05:22:49,355 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 05:22:49,383 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 05:22:49,383 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 05:22:49,385 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 05:22:49,386 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 05:22:49,387 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 05:22:49,388 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 05:22:49,388 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 05:22:49,389 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 05:22:49,390 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 05:22:49,390 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 05:22:49,391 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 05:22:49,393 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 05:22:49,394 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 05:22:49,395 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 05:22:49,398 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 05:22:49,399 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 05:22:49,401 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 05:22:49,404 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 05:22:49,413 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 05:22:49,414 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 05:22:49,415 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 05:22:49,416 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 05:22:49,417 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 05:22:49,417 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 05:22:49,417 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 05:22:49,418 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 05:22:49,418 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 05:22:49,418 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 05:22:49,419 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 05:22:49,419 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 05:22:49,420 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 05:22:49,432 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 05:22:49,432 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 05:22:49,433 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 05:22:49,433 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 05:22:49,433 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 05:22:49,433 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 05:22:49,434 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 05:22:49,435 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-08-27 05:22:49,468 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 05:22:49,468 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 05:22:49,469 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 05:22:49,469 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 05:22:49,471 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 05:22:49,471 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 05:22:49,471 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 05:22:49,472 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 05:22:49,472 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 05:22:49,472 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 05:22:49,472 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 05:22:49,473 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 05:22:49,473 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 05:22:49,473 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-27 05:22:49,473 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-27 05:22:49,473 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-27 05:22:49,473 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-27 05:22:49,474 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-27 05:22:49,474 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-08-27 05:22:49,474 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-08-27 05:22:49,474 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 05:22:49,474 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 05:22:49,474 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 05:22:49,474 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 05:22:49,475 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-27 05:22:49,475 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 05:22:49,475 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 05:22:49,475 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-27 05:22:49,475 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-08-27 05:22:49,475 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-08-27 05:22:49,476 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 05:22:49,476 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-27 05:22:49,476 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e0c6505355e23ab050a0b1754726876dca60bcf4 [2021-08-27 05:22:49,748 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 05:22:49,763 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 05:22:49,765 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 05:22:49,766 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 05:22:49,766 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 05:22:49,767 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety/test-0019-2.i [2021-08-27 05:22:50,215 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b21315509/e994702ac36b42d4ba2a77aa728451f6/FLAGe38a75d0e [2021-08-27 05:22:50,682 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 05:22:50,683 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/test-0019-2.i [2021-08-27 05:22:50,698 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b21315509/e994702ac36b42d4ba2a77aa728451f6/FLAGe38a75d0e [2021-08-27 05:22:51,186 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b21315509/e994702ac36b42d4ba2a77aa728451f6 [2021-08-27 05:22:51,188 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 05:22:51,189 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-27 05:22:51,190 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 05:22:51,190 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 05:22:51,194 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 05:22:51,194 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 05:22:51" (1/1) ... [2021-08-27 05:22:51,195 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e3616b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:22:51, skipping insertion in model container [2021-08-27 05:22:51,195 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 05:22:51" (1/1) ... [2021-08-27 05:22:51,199 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 05:22:51,226 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 05:22:51,482 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 05:22:51,490 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 05:22:51,509 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 05:22:51,532 INFO L208 MainTranslator]: Completed translation [2021-08-27 05:22:51,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:22:51 WrapperNode [2021-08-27 05:22:51,533 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 05:22:51,535 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 05:22:51,535 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 05:22:51,535 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 05:22:51,542 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:22:51" (1/1) ... [2021-08-27 05:22:51,543 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:22:51" (1/1) ... [2021-08-27 05:22:51,570 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:22:51" (1/1) ... [2021-08-27 05:22:51,570 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:22:51" (1/1) ... [2021-08-27 05:22:51,583 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:22:51" (1/1) ... [2021-08-27 05:22:51,584 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:22:51" (1/1) ... [2021-08-27 05:22:51,586 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:22:51" (1/1) ... [2021-08-27 05:22:51,590 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 05:22:51,590 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 05:22:51,591 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 05:22:51,591 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 05:22:51,591 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:22:51" (1/1) ... [2021-08-27 05:22:51,596 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 05:22:51,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 05:22:51,614 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-27 05:22:51,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-27 05:22:51,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-08-27 05:22:51,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 05:22:51,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-08-27 05:22:51,667 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-08-27 05:22:51,667 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-08-27 05:22:51,667 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-08-27 05:22:51,667 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-08-27 05:22:51,668 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-08-27 05:22:51,668 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-08-27 05:22:51,668 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_data [2021-08-27 05:22:51,669 INFO L138 BoogieDeclarations]: Found implementation of procedure free_data [2021-08-27 05:22:51,669 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-08-27 05:22:51,669 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-08-27 05:22:51,669 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-08-27 05:22:51,669 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-08-27 05:22:51,669 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-08-27 05:22:51,669 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-08-27 05:22:51,669 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 05:22:51,670 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-08-27 05:22:51,670 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-08-27 05:22:51,670 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-08-27 05:22:51,670 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-08-27 05:22:51,670 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-08-27 05:22:51,670 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-08-27 05:22:51,670 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-08-27 05:22:51,670 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-08-27 05:22:51,671 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-08-27 05:22:51,671 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-08-27 05:22:51,671 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-08-27 05:22:51,671 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-08-27 05:22:51,671 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-08-27 05:22:51,671 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-08-27 05:22:51,671 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-08-27 05:22:51,671 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-08-27 05:22:51,671 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-08-27 05:22:51,672 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-08-27 05:22:51,672 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-08-27 05:22:51,672 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-08-27 05:22:51,672 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-08-27 05:22:51,672 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-08-27 05:22:51,672 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-08-27 05:22:51,672 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-08-27 05:22:51,672 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-08-27 05:22:51,672 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-08-27 05:22:51,673 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-08-27 05:22:51,673 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-08-27 05:22:51,673 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-08-27 05:22:51,674 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-08-27 05:22:51,674 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-08-27 05:22:51,674 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-08-27 05:22:51,674 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-08-27 05:22:51,674 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-08-27 05:22:51,674 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-08-27 05:22:51,675 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-08-27 05:22:51,675 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-08-27 05:22:51,675 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-08-27 05:22:51,675 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-08-27 05:22:51,675 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-08-27 05:22:51,675 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-08-27 05:22:51,675 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-08-27 05:22:51,676 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-08-27 05:22:51,676 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-08-27 05:22:51,676 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-08-27 05:22:51,676 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-08-27 05:22:51,676 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-08-27 05:22:51,677 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-08-27 05:22:51,677 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-08-27 05:22:51,678 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-08-27 05:22:51,678 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-08-27 05:22:51,678 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-08-27 05:22:51,678 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-08-27 05:22:51,678 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-08-27 05:22:51,678 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-08-27 05:22:51,678 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-08-27 05:22:51,678 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-08-27 05:22:51,679 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-08-27 05:22:51,679 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-08-27 05:22:51,679 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-08-27 05:22:51,679 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-08-27 05:22:51,679 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-08-27 05:22:51,680 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-08-27 05:22:51,680 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-08-27 05:22:51,680 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-08-27 05:22:51,680 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-08-27 05:22:51,680 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-08-27 05:22:51,680 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-08-27 05:22:51,680 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-08-27 05:22:51,680 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-08-27 05:22:51,680 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-08-27 05:22:51,681 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-08-27 05:22:51,681 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-08-27 05:22:51,681 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-08-27 05:22:51,681 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-08-27 05:22:51,681 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-08-27 05:22:51,681 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-08-27 05:22:51,681 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-08-27 05:22:51,681 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-08-27 05:22:51,681 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-08-27 05:22:51,681 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-08-27 05:22:51,682 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-08-27 05:22:51,682 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-08-27 05:22:51,682 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-08-27 05:22:51,682 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-08-27 05:22:51,682 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-08-27 05:22:51,682 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-08-27 05:22:51,682 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-08-27 05:22:51,683 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-08-27 05:22:51,683 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-08-27 05:22:51,683 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-08-27 05:22:51,683 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-08-27 05:22:51,684 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-08-27 05:22:51,684 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-08-27 05:22:51,684 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-08-27 05:22:51,684 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-08-27 05:22:51,684 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-08-27 05:22:51,684 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-08-27 05:22:51,684 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-08-27 05:22:51,684 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-08-27 05:22:51,684 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-08-27 05:22:51,685 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-08-27 05:22:51,685 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-08-27 05:22:51,685 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-08-27 05:22:51,685 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-08-27 05:22:51,685 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-08-27 05:22:51,685 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_data [2021-08-27 05:22:51,686 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-27 05:22:51,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-27 05:22:51,688 INFO L130 BoogieDeclarations]: Found specification of procedure free_data [2021-08-27 05:22:51,688 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-27 05:22:51,688 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-27 05:22:51,688 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-08-27 05:22:51,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-08-27 05:22:51,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-08-27 05:22:51,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 05:22:51,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-08-27 05:22:51,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-08-27 05:22:51,701 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-08-27 05:22:52,261 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 05:22:52,261 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-08-27 05:22:52,262 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 05:22:52 BoogieIcfgContainer [2021-08-27 05:22:52,263 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 05:22:52,264 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-27 05:22:52,264 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-27 05:22:52,265 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-27 05:22:52,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 05:22:51" (1/3) ... [2021-08-27 05:22:52,266 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19b347e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 05:22:52, skipping insertion in model container [2021-08-27 05:22:52,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:22:51" (2/3) ... [2021-08-27 05:22:52,266 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19b347e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 05:22:52, skipping insertion in model container [2021-08-27 05:22:52,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 05:22:52" (3/3) ... [2021-08-27 05:22:52,267 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0019-2.i [2021-08-27 05:22:52,271 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-27 05:22:52,271 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2021-08-27 05:22:52,297 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-27 05:22:52,301 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-27 05:22:52,301 INFO L340 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2021-08-27 05:22:52,310 INFO L276 IsEmpty]: Start isEmpty. Operand has 55 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 46 states have internal predecessors, (47), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-08-27 05:22:52,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-27 05:22:52,314 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:22:52,314 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:22:52,315 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting alloc_dataErr0REQUIRES_VIOLATION === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr0REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION (and 15 more)] === [2021-08-27 05:22:52,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:22:52,319 INFO L82 PathProgramCache]: Analyzing trace with hash 153654014, now seen corresponding path program 1 times [2021-08-27 05:22:52,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 05:22:52,326 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1440204325] [2021-08-27 05:22:52,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:22:52,327 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 05:22:52,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 05:22:52,338 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 05:22:52,361 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-08-27 05:22:52,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:22:52,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-27 05:22:52,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:22:52,679 INFO L388 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 [2021-08-27 05:22:52,775 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-08-27 05:22:52,775 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 21 [2021-08-27 05:22:52,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:22:52,817 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 05:22:52,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:22:52,918 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 05:22:52,918 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1440204325] [2021-08-27 05:22:52,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1440204325] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 05:22:52,918 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:22:52,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-08-27 05:22:52,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254043990] [2021-08-27 05:22:52,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-27 05:22:52,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 05:22:52,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 05:22:52,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-27 05:22:52,937 INFO L87 Difference]: Start difference. First operand has 55 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 46 states have internal predecessors, (47), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 6 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:22:53,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:22:53,118 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2021-08-27 05:22:53,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 05:22:53,121 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2021-08-27 05:22:53,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:22:53,126 INFO L225 Difference]: With dead ends: 53 [2021-08-27 05:22:53,126 INFO L226 Difference]: Without dead ends: 50 [2021-08-27 05:22:53,127 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 72.9ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-08-27 05:22:53,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-08-27 05:22:53,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2021-08-27 05:22:53,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 26 states have (on average 1.6538461538461537) internal successors, (43), 42 states have internal predecessors, (43), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 05:22:53,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2021-08-27 05:22:53,152 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 9 [2021-08-27 05:22:53,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:22:53,152 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2021-08-27 05:22:53,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:22:53,153 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2021-08-27 05:22:53,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-27 05:22:53,153 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:22:53,153 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:22:53,161 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-08-27 05:22:53,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 05:22:53,360 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting alloc_dataErr1REQUIRES_VIOLATION === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr0REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION (and 15 more)] === [2021-08-27 05:22:53,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:22:53,361 INFO L82 PathProgramCache]: Analyzing trace with hash 153654015, now seen corresponding path program 1 times [2021-08-27 05:22:53,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 05:22:53,361 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [632667162] [2021-08-27 05:22:53,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:22:53,362 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 05:22:53,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 05:22:53,363 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 05:22:53,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-08-27 05:22:53,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:22:53,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 14 conjunts are in the unsatisfiable core [2021-08-27 05:22:53,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:22:53,523 INFO L388 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 [2021-08-27 05:22:53,528 INFO L388 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 [2021-08-27 05:22:53,628 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-08-27 05:22:53,629 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 29 [2021-08-27 05:22:53,636 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-08-27 05:22:53,637 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 22 [2021-08-27 05:22:53,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:22:53,670 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 05:22:54,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:22:54,740 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 05:22:54,740 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [632667162] [2021-08-27 05:22:54,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [632667162] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 05:22:54,741 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:22:54,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-08-27 05:22:54,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610750972] [2021-08-27 05:22:54,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-27 05:22:54,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 05:22:54,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-27 05:22:54,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-08-27 05:22:54,743 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand has 8 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:22:55,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:22:55,246 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2021-08-27 05:22:55,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-27 05:22:55,246 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2021-08-27 05:22:55,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:22:55,247 INFO L225 Difference]: With dead ends: 49 [2021-08-27 05:22:55,247 INFO L226 Difference]: Without dead ends: 49 [2021-08-27 05:22:55,248 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 991.9ms TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-08-27 05:22:55,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-08-27 05:22:55,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2021-08-27 05:22:55,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 41 states have internal predecessors, (42), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 05:22:55,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2021-08-27 05:22:55,251 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 9 [2021-08-27 05:22:55,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:22:55,251 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2021-08-27 05:22:55,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:22:55,251 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2021-08-27 05:22:55,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-27 05:22:55,252 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:22:55,252 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:22:55,265 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-08-27 05:22:55,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 05:22:55,457 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting alloc_dataErr3REQUIRES_VIOLATION === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr0REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION (and 15 more)] === [2021-08-27 05:22:55,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:22:55,457 INFO L82 PathProgramCache]: Analyzing trace with hash 1632619936, now seen corresponding path program 1 times [2021-08-27 05:22:55,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 05:22:55,458 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1398720783] [2021-08-27 05:22:55,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:22:55,458 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 05:22:55,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 05:22:55,459 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 05:22:55,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-08-27 05:22:55,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:22:55,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 17 conjunts are in the unsatisfiable core [2021-08-27 05:22:55,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:22:55,622 INFO L388 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 [2021-08-27 05:22:55,636 INFO L388 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 [2021-08-27 05:22:55,708 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-08-27 05:22:55,709 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 29 [2021-08-27 05:22:55,723 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-08-27 05:22:55,724 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 22 [2021-08-27 05:22:55,855 INFO L354 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2021-08-27 05:22:55,856 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 43 [2021-08-27 05:22:55,864 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-08-27 05:22:55,865 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 33 [2021-08-27 05:22:55,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:22:55,913 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 05:22:58,215 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-08-27 05:22:58,215 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2021-08-27 05:22:58,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:22:58,886 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 05:22:58,886 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1398720783] [2021-08-27 05:22:58,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1398720783] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 05:22:58,886 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:22:58,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 5] imperfect sequences [] total 10 [2021-08-27 05:22:58,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243907858] [2021-08-27 05:22:58,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-27 05:22:58,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 05:22:58,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-27 05:22:58,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=81, Unknown=1, NotChecked=0, Total=110 [2021-08-27 05:22:58,888 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand has 11 states, 8 states have (on average 1.5) internal successors, (12), 9 states have internal predecessors, (12), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:22:59,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:22:59,564 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions. [2021-08-27 05:22:59,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-27 05:22:59,565 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 1.5) internal successors, (12), 9 states have internal predecessors, (12), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-08-27 05:22:59,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:22:59,566 INFO L225 Difference]: With dead ends: 48 [2021-08-27 05:22:59,566 INFO L226 Difference]: Without dead ends: 48 [2021-08-27 05:22:59,566 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 2813.4ms TimeCoverageRelationStatistics Valid=43, Invalid=112, Unknown=1, NotChecked=0, Total=156 [2021-08-27 05:22:59,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-08-27 05:22:59,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2021-08-27 05:22:59,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 26 states have (on average 1.5769230769230769) internal successors, (41), 40 states have internal predecessors, (41), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 05:22:59,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 48 transitions. [2021-08-27 05:22:59,570 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 48 transitions. Word has length 11 [2021-08-27 05:22:59,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:22:59,570 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 48 transitions. [2021-08-27 05:22:59,570 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 1.5) internal successors, (12), 9 states have internal predecessors, (12), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:22:59,570 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 48 transitions. [2021-08-27 05:22:59,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-08-27 05:22:59,571 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:22:59,571 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:22:59,580 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-08-27 05:22:59,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 05:22:59,781 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting free_dataErr0REQUIRES_VIOLATION === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr0REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION (and 15 more)] === [2021-08-27 05:22:59,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:22:59,782 INFO L82 PathProgramCache]: Analyzing trace with hash 1202400066, now seen corresponding path program 1 times [2021-08-27 05:22:59,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 05:22:59,785 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1625140533] [2021-08-27 05:22:59,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:22:59,786 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 05:22:59,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 05:22:59,787 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 05:22:59,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-08-27 05:22:59,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:22:59,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 8 conjunts are in the unsatisfiable core [2021-08-27 05:22:59,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:23:00,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:23:00,036 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 05:23:00,133 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-08-27 05:23:00,134 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2021-08-27 05:23:00,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:23:00,165 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 05:23:00,165 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1625140533] [2021-08-27 05:23:00,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1625140533] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 05:23:00,166 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:23:00,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-08-27 05:23:00,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020951271] [2021-08-27 05:23:00,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-27 05:23:00,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 05:23:00,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-27 05:23:00,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-27 05:23:00,167 INFO L87 Difference]: Start difference. First operand 48 states and 48 transitions. Second operand has 7 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-27 05:23:00,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:23:00,448 INFO L93 Difference]: Finished difference Result 52 states and 52 transitions. [2021-08-27 05:23:00,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-27 05:23:00,449 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2021-08-27 05:23:00,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:23:00,450 INFO L225 Difference]: With dead ends: 52 [2021-08-27 05:23:00,450 INFO L226 Difference]: Without dead ends: 52 [2021-08-27 05:23:00,450 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 75.9ms TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-08-27 05:23:00,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-08-27 05:23:00,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 46. [2021-08-27 05:23:00,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 38 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 05:23:00,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 47 transitions. [2021-08-27 05:23:00,461 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 47 transitions. Word has length 17 [2021-08-27 05:23:00,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:23:00,461 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 47 transitions. [2021-08-27 05:23:00,461 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-27 05:23:00,461 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 47 transitions. [2021-08-27 05:23:00,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-08-27 05:23:00,462 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:23:00,462 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:23:00,474 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-08-27 05:23:00,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 05:23:00,671 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting free_dataErr1REQUIRES_VIOLATION === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr0REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION (and 15 more)] === [2021-08-27 05:23:00,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:23:00,672 INFO L82 PathProgramCache]: Analyzing trace with hash 1202400067, now seen corresponding path program 1 times [2021-08-27 05:23:00,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 05:23:00,672 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1235189891] [2021-08-27 05:23:00,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:23:00,672 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 05:23:00,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 05:23:00,673 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 05:23:00,675 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-08-27 05:23:00,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:23:00,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 11 conjunts are in the unsatisfiable core [2021-08-27 05:23:00,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:23:00,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:23:00,984 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 05:23:01,214 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-08-27 05:23:01,458 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-08-27 05:23:01,458 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 20 [2021-08-27 05:23:01,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:23:01,743 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 05:23:01,743 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1235189891] [2021-08-27 05:23:01,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1235189891] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 05:23:01,743 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:23:01,743 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-08-27 05:23:01,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267637825] [2021-08-27 05:23:01,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-08-27 05:23:01,744 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 05:23:01,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-08-27 05:23:01,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-08-27 05:23:01,745 INFO L87 Difference]: Start difference. First operand 46 states and 47 transitions. Second operand has 14 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 10 states have internal predecessors, (20), 5 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 05:23:02,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:23:02,322 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2021-08-27 05:23:02,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-27 05:23:02,323 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 10 states have internal predecessors, (20), 5 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 17 [2021-08-27 05:23:02,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:23:02,323 INFO L225 Difference]: With dead ends: 42 [2021-08-27 05:23:02,323 INFO L226 Difference]: Without dead ends: 42 [2021-08-27 05:23:02,323 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 553.9ms TimeCoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2021-08-27 05:23:02,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-08-27 05:23:02,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2021-08-27 05:23:02,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 34 states have internal predecessors, (35), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 05:23:02,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2021-08-27 05:23:02,326 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 17 [2021-08-27 05:23:02,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:23:02,326 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2021-08-27 05:23:02,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 10 states have internal predecessors, (20), 5 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 05:23:02,326 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2021-08-27 05:23:02,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-08-27 05:23:02,326 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:23:02,326 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:23:02,338 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-08-27 05:23:02,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 05:23:02,535 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting free_dataErr4ASSERT_VIOLATIONMEMORY_FREE === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr0REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION (and 15 more)] === [2021-08-27 05:23:02,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:23:02,536 INFO L82 PathProgramCache]: Analyzing trace with hash -1648280676, now seen corresponding path program 1 times [2021-08-27 05:23:02,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 05:23:02,536 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [519751915] [2021-08-27 05:23:02,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:23:02,536 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 05:23:02,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 05:23:02,537 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 05:23:02,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-08-27 05:23:02,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:23:02,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 16 conjunts are in the unsatisfiable core [2021-08-27 05:23:02,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:23:02,767 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-08-27 05:23:02,871 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-08-27 05:23:02,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:23:02,933 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 05:23:03,058 INFO L388 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 38 treesize of output 32 [2021-08-27 05:23:03,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:23:03,120 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 05:23:03,120 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [519751915] [2021-08-27 05:23:03,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [519751915] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 05:23:03,120 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:23:03,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 10 [2021-08-27 05:23:03,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879906103] [2021-08-27 05:23:03,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-27 05:23:03,121 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 05:23:03,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-27 05:23:03,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-08-27 05:23:03,121 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand has 11 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-27 05:23:03,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:23:03,621 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2021-08-27 05:23:03,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-27 05:23:03,621 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2021-08-27 05:23:03,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:23:03,623 INFO L225 Difference]: With dead ends: 43 [2021-08-27 05:23:03,623 INFO L226 Difference]: Without dead ends: 43 [2021-08-27 05:23:03,623 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 254.4ms TimeCoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2021-08-27 05:23:03,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-08-27 05:23:03,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 40. [2021-08-27 05:23:03,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 32 states have internal predecessors, (33), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 05:23:03,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2021-08-27 05:23:03,626 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 22 [2021-08-27 05:23:03,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:23:03,626 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2021-08-27 05:23:03,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-27 05:23:03,626 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2021-08-27 05:23:03,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-08-27 05:23:03,627 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:23:03,627 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:23:03,636 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-08-27 05:23:03,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 05:23:03,834 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting free_dataErr5ASSERT_VIOLATIONMEMORY_FREE === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr0REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION (and 15 more)] === [2021-08-27 05:23:03,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:23:03,834 INFO L82 PathProgramCache]: Analyzing trace with hash 442906694, now seen corresponding path program 1 times [2021-08-27 05:23:03,835 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 05:23:03,835 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1758250147] [2021-08-27 05:23:03,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:23:03,835 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 05:23:03,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 05:23:03,835 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 05:23:03,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-08-27 05:23:04,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:23:04,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 19 conjunts are in the unsatisfiable core [2021-08-27 05:23:04,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:23:04,244 INFO L388 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 17 treesize of output 13 [2021-08-27 05:23:04,556 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-08-27 05:23:04,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:23:04,725 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 05:23:05,238 INFO L388 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 38 treesize of output 32 [2021-08-27 05:23:05,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:23:05,423 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 05:23:05,424 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1758250147] [2021-08-27 05:23:05,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1758250147] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 05:23:05,424 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:23:05,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 10] imperfect sequences [] total 20 [2021-08-27 05:23:05,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144823697] [2021-08-27 05:23:05,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-08-27 05:23:05,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 05:23:05,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-08-27 05:23:05,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=352, Unknown=0, NotChecked=0, Total=420 [2021-08-27 05:23:05,426 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand has 21 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 17 states have internal predecessors, (34), 4 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2021-08-27 05:23:06,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:23:06,987 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2021-08-27 05:23:06,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-27 05:23:06,988 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 17 states have internal predecessors, (34), 4 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) Word has length 23 [2021-08-27 05:23:06,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:23:06,989 INFO L225 Difference]: With dead ends: 41 [2021-08-27 05:23:06,989 INFO L226 Difference]: Without dead ends: 41 [2021-08-27 05:23:06,989 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 1062.6ms TimeCoverageRelationStatistics Valid=125, Invalid=577, Unknown=0, NotChecked=0, Total=702 [2021-08-27 05:23:06,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-08-27 05:23:06,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 38. [2021-08-27 05:23:06,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 30 states have internal predecessors, (31), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 05:23:06,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 38 transitions. [2021-08-27 05:23:06,992 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 38 transitions. Word has length 23 [2021-08-27 05:23:06,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:23:06,992 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 38 transitions. [2021-08-27 05:23:06,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 17 states have internal predecessors, (34), 4 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2021-08-27 05:23:06,993 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2021-08-27 05:23:06,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-08-27 05:23:06,993 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:23:06,993 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:23:07,003 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-08-27 05:23:07,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 05:23:07,194 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting free_dataErr6ASSERT_VIOLATIONMEMORY_FREE === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr0REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION (and 15 more)] === [2021-08-27 05:23:07,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:23:07,194 INFO L82 PathProgramCache]: Analyzing trace with hash 845205726, now seen corresponding path program 1 times [2021-08-27 05:23:07,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 05:23:07,194 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [733340212] [2021-08-27 05:23:07,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:23:07,195 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 05:23:07,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 05:23:07,196 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 05:23:07,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-08-27 05:23:07,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:23:07,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 18 conjunts are in the unsatisfiable core [2021-08-27 05:23:07,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:23:07,448 INFO L388 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 [2021-08-27 05:23:07,477 INFO L388 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 22 treesize of output 18 [2021-08-27 05:23:07,617 INFO L388 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 32 treesize of output 20 [2021-08-27 05:23:07,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:23:07,697 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 05:23:07,945 INFO L388 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 52 treesize of output 46 [2021-08-27 05:23:08,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:23:08,067 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 05:23:08,067 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [733340212] [2021-08-27 05:23:08,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [733340212] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 05:23:08,067 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:23:08,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 11 [2021-08-27 05:23:08,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325830420] [2021-08-27 05:23:08,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-27 05:23:08,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 05:23:08,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-27 05:23:08,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2021-08-27 05:23:08,069 INFO L87 Difference]: Start difference. First operand 38 states and 38 transitions. Second operand has 12 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-27 05:23:08,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:23:08,688 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2021-08-27 05:23:08,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-08-27 05:23:08,689 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2021-08-27 05:23:08,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:23:08,690 INFO L225 Difference]: With dead ends: 40 [2021-08-27 05:23:08,690 INFO L226 Difference]: Without dead ends: 40 [2021-08-27 05:23:08,690 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 28 SyntacticMatches, 9 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 453.0ms TimeCoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2021-08-27 05:23:08,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-08-27 05:23:08,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 37. [2021-08-27 05:23:08,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 29 states have internal predecessors, (30), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 05:23:08,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2021-08-27 05:23:08,692 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 24 [2021-08-27 05:23:08,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:23:08,693 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2021-08-27 05:23:08,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-27 05:23:08,693 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2021-08-27 05:23:08,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-08-27 05:23:08,693 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:23:08,693 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:23:08,701 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-08-27 05:23:08,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 05:23:08,894 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting free_dataErr9ASSERT_VIOLATIONMEMORY_FREE === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr0REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION (and 15 more)] === [2021-08-27 05:23:08,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:23:08,895 INFO L82 PathProgramCache]: Analyzing trace with hash -1869371830, now seen corresponding path program 1 times [2021-08-27 05:23:08,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 05:23:08,895 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1454410144] [2021-08-27 05:23:08,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:23:08,895 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 05:23:08,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 05:23:08,896 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 05:23:08,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-08-27 05:23:09,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:23:09,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 19 conjunts are in the unsatisfiable core [2021-08-27 05:23:09,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:23:09,160 INFO L388 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 [2021-08-27 05:23:09,193 INFO L388 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 20 treesize of output 16 [2021-08-27 05:23:09,225 INFO L354 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2021-08-27 05:23:09,226 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 19 [2021-08-27 05:23:09,271 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-08-27 05:23:09,271 INFO L388 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 22 treesize of output 21 [2021-08-27 05:23:09,468 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-08-27 05:23:09,468 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 11 [2021-08-27 05:23:09,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:23:09,537 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 05:23:09,957 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-08-27 05:23:09,957 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 447 treesize of output 407 [2021-08-27 05:23:10,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:23:10,171 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 05:23:10,171 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1454410144] [2021-08-27 05:23:10,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1454410144] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 05:23:10,171 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:23:10,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 18 [2021-08-27 05:23:10,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997010168] [2021-08-27 05:23:10,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-27 05:23:10,172 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 05:23:10,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-27 05:23:10,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2021-08-27 05:23:10,173 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand has 18 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 16 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-27 05:23:11,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:23:11,003 INFO L93 Difference]: Finished difference Result 28 states and 27 transitions. [2021-08-27 05:23:11,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-08-27 05:23:11,003 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 16 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 27 [2021-08-27 05:23:11,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:23:11,004 INFO L225 Difference]: With dead ends: 28 [2021-08-27 05:23:11,004 INFO L226 Difference]: Without dead ends: 28 [2021-08-27 05:23:11,004 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 800.7ms TimeCoverageRelationStatistics Valid=107, Invalid=649, Unknown=0, NotChecked=0, Total=756 [2021-08-27 05:23:11,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-08-27 05:23:11,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-08-27 05:23:11,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 20 states have (on average 1.0) internal successors, (20), 20 states have internal predecessors, (20), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 05:23:11,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 27 transitions. [2021-08-27 05:23:11,006 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 27 transitions. Word has length 27 [2021-08-27 05:23:11,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:23:11,006 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 27 transitions. [2021-08-27 05:23:11,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 16 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-27 05:23:11,006 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 27 transitions. [2021-08-27 05:23:11,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-08-27 05:23:11,007 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:23:11,007 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:23:11,016 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-08-27 05:23:11,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 05:23:11,214 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr0REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION (and 15 more)] === [2021-08-27 05:23:11,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:23:11,214 INFO L82 PathProgramCache]: Analyzing trace with hash -1914061661, now seen corresponding path program 1 times [2021-08-27 05:23:11,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 05:23:11,215 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [489346841] [2021-08-27 05:23:11,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:23:11,215 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 05:23:11,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 05:23:11,216 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 05:23:11,219 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-08-27 05:23:11,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 05:23:11,490 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 05:23:11,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 05:23:11,586 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-08-27 05:23:11,586 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-08-27 05:23:11,587 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0ENSURES_VIOLATIONMEMORY_LEAK [2021-08-27 05:23:11,588 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_dataErr0REQUIRES_VIOLATION [2021-08-27 05:23:11,588 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_dataErr1REQUIRES_VIOLATION [2021-08-27 05:23:11,588 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_dataErr2REQUIRES_VIOLATION [2021-08-27 05:23:11,588 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_dataErr3REQUIRES_VIOLATION [2021-08-27 05:23:11,588 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr0REQUIRES_VIOLATION [2021-08-27 05:23:11,589 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr1REQUIRES_VIOLATION [2021-08-27 05:23:11,589 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr2REQUIRES_VIOLATION [2021-08-27 05:23:11,589 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr3REQUIRES_VIOLATION [2021-08-27 05:23:11,589 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr4ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:23:11,589 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr5ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:23:11,589 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr6ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:23:11,589 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr7ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:23:11,589 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr8ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:23:11,589 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr9ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 05:23:11,590 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr10REQUIRES_VIOLATION [2021-08-27 05:23:11,590 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr11REQUIRES_VIOLATION [2021-08-27 05:23:11,590 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr12REQUIRES_VIOLATION [2021-08-27 05:23:11,590 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr13REQUIRES_VIOLATION [2021-08-27 05:23:11,606 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-08-27 05:23:11,790 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 05:23:11,794 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-27 05:23:11,804 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2021-08-27 05:23:11,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 05:23:11 BoogieIcfgContainer [2021-08-27 05:23:11,814 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-27 05:23:11,814 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 05:23:11,814 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 05:23:11,814 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 05:23:11,815 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 05:22:52" (3/4) ... [2021-08-27 05:23:11,816 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-27 05:23:11,817 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 05:23:11,817 INFO L168 Benchmark]: Toolchain (without parser) took 20627.98 ms. Allocated memory was 65.0 MB in the beginning and 96.5 MB in the end (delta: 31.5 MB). Free memory was 43.4 MB in the beginning and 30.7 MB in the end (delta: 12.7 MB). Peak memory consumption was 45.2 MB. Max. memory is 16.1 GB. [2021-08-27 05:23:11,817 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 65.0 MB. Free memory is still 45.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 05:23:11,817 INFO L168 Benchmark]: CACSL2BoogieTranslator took 344.36 ms. Allocated memory is still 65.0 MB. Free memory was 43.2 MB in the beginning and 40.4 MB in the end (delta: 2.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-08-27 05:23:11,818 INFO L168 Benchmark]: Boogie Preprocessor took 55.01 ms. Allocated memory is still 65.0 MB. Free memory was 40.4 MB in the beginning and 37.6 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 05:23:11,818 INFO L168 Benchmark]: RCFGBuilder took 672.26 ms. Allocated memory was 65.0 MB in the beginning and 79.7 MB in the end (delta: 14.7 MB). Free memory was 37.4 MB in the beginning and 40.9 MB in the end (delta: -3.5 MB). Peak memory consumption was 15.4 MB. Max. memory is 16.1 GB. [2021-08-27 05:23:11,818 INFO L168 Benchmark]: TraceAbstraction took 19550.07 ms. Allocated memory was 79.7 MB in the beginning and 96.5 MB in the end (delta: 16.8 MB). Free memory was 40.4 MB in the beginning and 30.7 MB in the end (delta: 9.8 MB). Peak memory consumption was 26.5 MB. Max. memory is 16.1 GB. [2021-08-27 05:23:11,818 INFO L168 Benchmark]: Witness Printer took 2.59 ms. Allocated memory is still 96.5 MB. Free memory is still 30.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 05:23:11,819 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 65.0 MB. Free memory is still 45.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 344.36 ms. Allocated memory is still 65.0 MB. Free memory was 43.2 MB in the beginning and 40.4 MB in the end (delta: 2.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 55.01 ms. Allocated memory is still 65.0 MB. Free memory was 40.4 MB in the beginning and 37.6 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 672.26 ms. Allocated memory was 65.0 MB in the beginning and 79.7 MB in the end (delta: 14.7 MB). Free memory was 37.4 MB in the beginning and 40.9 MB in the end (delta: -3.5 MB). Peak memory consumption was 15.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 19550.07 ms. Allocated memory was 79.7 MB in the beginning and 96.5 MB in the end (delta: 16.8 MB). Free memory was 40.4 MB in the beginning and 30.7 MB in the end (delta: 9.8 MB). Peak memory consumption was 26.5 MB. Max. memory is 16.1 GB. * Witness Printer took 2.59 ms. Allocated memory is still 96.5 MB. Free memory is still 30.7 MB. There was no memory consumed. Max. memory is 16.1 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: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 543]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 543. Possible FailurePath: [L544] TData data; VAL [data={31:0}] [L545] CALL alloc_data(&data) VAL [pdata={31:0}] [L529] pdata->lo = malloc(16) VAL [malloc(16)={1:0}, pdata={31:0}, pdata={31:0}] [L530] pdata->hi = malloc(24) VAL [malloc(24)={3:0}, pdata={31:0}, pdata={31:0}] [L545] RET alloc_data(&data) VAL [data={31:0}] [L546] CALL free_data(&data) VAL [data={31:0}] [L534] EXPR data->lo VAL [data={31:0}, data={31:0}, data->lo={1:0}] [L534] void *lo = data->lo; [L535] EXPR data->hi VAL [data={31:0}, data={31:0}, data->hi={3:0}, lo={1:0}] [L535] void *hi = data->hi; [L536] COND FALSE !(lo == hi) VAL [data={31:0}, data={31:0}, hi={3:0}, lo={1:0}] [L540] data->lo = (void *) 0 VAL [data={31:0}, data={31:0}, hi={3:0}, lo={1:0}] [L541] data->hi = (void *) 0 VAL [data={31:0}, data={31:0}, hi={3:0}, lo={1:0}] [L546] RET free_data(&data) VAL [data={31:0}] [L547] return 0; [L547] return 0; VAL [\result=0] - UnprovableResult [Line: 529]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 529]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 530]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 530]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 534]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 534]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 535]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 535]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 537]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 537]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 537]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 12 procedures, 79 locations, 19 error locations. Started 1 CEGAR loops. OverallTime: 19497.5ms, OverallIterations: 10, TraceHistogramMax: 1, EmptinessCheckTime: 10.5ms, AutomataDifference: 5771.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 5.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 262 SDtfs, 331 SDslu, 1029 SDs, 0 SdLazy, 1375 SolverSat, 88 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3740.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 348 GetRequests, 204 SyntacticMatches, 15 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 7079.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=55occurred in iteration=0, InterpolantAutomatonStates: 91, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 44.1ms AutomataMinimizationTime, 9 MinimizatonAttempts, 15 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 102.5ms SsaConstructionTime, 296.8ms SatisfiabilityAnalysisTime, 9601.9ms InterpolantComputationTime, 186 NumberOfCodeBlocks, 186 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 300 ConstructedInterpolants, 28 QuantifiedInterpolants, 2434 SizeOfPredicates, 82 NumberOfNonLiveVariables, 999 ConjunctsInSsa, 129 ConjunctsInUnsatCore, 18 InterpolantComputations, 18 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-08-27 05:23:11,852 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...