./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ldv-memsafety/memleaks_test4-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 839c364b 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/ldv-memsafety/memleaks_test4-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9bd23263f414c48e50ed8daa5b2985179bde28a9902b6873b1962b90b4067acc --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 19:44:21,008 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 19:44:21,029 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 19:44:21,067 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 19:44:21,067 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 19:44:21,071 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 19:44:21,072 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 19:44:21,074 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 19:44:21,076 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 19:44:21,088 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 19:44:21,088 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 19:44:21,089 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 19:44:21,089 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 19:44:21,090 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 19:44:21,091 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 19:44:21,093 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 19:44:21,096 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 19:44:21,097 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 19:44:21,098 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 19:44:21,100 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 19:44:21,103 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 19:44:21,104 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 19:44:21,105 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 19:44:21,106 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 19:44:21,108 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 19:44:21,109 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 19:44:21,109 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 19:44:21,109 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 19:44:21,110 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 19:44:21,111 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 19:44:21,111 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 19:44:21,112 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 19:44:21,112 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 19:44:21,113 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 19:44:21,114 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 19:44:21,115 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 19:44:21,115 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 19:44:21,116 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 19:44:21,116 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 19:44:21,116 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 19:44:21,117 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 19:44:21,118 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-14 19:44:21,136 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 19:44:21,138 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 19:44:21,139 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 19:44:21,139 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 19:44:21,140 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 19:44:21,140 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 19:44:21,140 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 19:44:21,141 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 19:44:21,141 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 19:44:21,141 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 19:44:21,142 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 19:44:21,142 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-14 19:44:21,142 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 19:44:21,142 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 19:44:21,142 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 19:44:21,142 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-14 19:44:21,142 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-14 19:44:21,143 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-14 19:44:21,143 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 19:44:21,143 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-14 19:44:21,143 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 19:44:21,143 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 19:44:21,143 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 19:44:21,143 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 19:44:21,144 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 19:44:21,144 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 19:44:21,144 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 19:44:21,144 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 19:44:21,144 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 19:44:21,144 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 19:44:21,144 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 19:44:21,145 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9bd23263f414c48e50ed8daa5b2985179bde28a9902b6873b1962b90b4067acc [2021-12-14 19:44:21,347 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 19:44:21,369 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 19:44:21,371 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 19:44:21,372 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 19:44:21,372 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 19:44:21,373 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test4-1.i [2021-12-14 19:44:21,423 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8028977b6/e698d25b83194f39b98b2df4904f8b3c/FLAGb435b4a18 [2021-12-14 19:44:21,801 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 19:44:21,801 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test4-1.i [2021-12-14 19:44:21,812 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8028977b6/e698d25b83194f39b98b2df4904f8b3c/FLAGb435b4a18 [2021-12-14 19:44:22,194 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8028977b6/e698d25b83194f39b98b2df4904f8b3c [2021-12-14 19:44:22,196 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 19:44:22,197 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 19:44:22,198 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 19:44:22,198 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 19:44:22,215 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 19:44:22,216 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 07:44:22" (1/1) ... [2021-12-14 19:44:22,216 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f6af50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:44:22, skipping insertion in model container [2021-12-14 19:44:22,217 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 07:44:22" (1/1) ... [2021-12-14 19:44:22,222 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 19:44:22,253 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 19:44:22,495 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 19:44:22,516 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-12-14 19:44:22,517 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2432adec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:44:22, skipping insertion in model container [2021-12-14 19:44:22,518 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 19:44:22,518 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-12-14 19:44:22,520 INFO L158 Benchmark]: Toolchain (without parser) took 321.61ms. Allocated memory was 98.6MB in the beginning and 123.7MB in the end (delta: 25.2MB). Free memory was 71.3MB in the beginning and 98.1MB in the end (delta: -26.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-14 19:44:22,521 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 98.6MB. Free memory is still 56.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 19:44:22,522 INFO L158 Benchmark]: CACSL2BoogieTranslator took 319.80ms. Allocated memory was 98.6MB in the beginning and 123.7MB in the end (delta: 25.2MB). Free memory was 71.3MB in the beginning and 98.1MB in the end (delta: -26.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-14 19:44:22,523 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 98.6MB. Free memory is still 56.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 319.80ms. Allocated memory was 98.6MB in the beginning and 123.7MB in the end (delta: 25.2MB). Free memory was 71.3MB in the beginning and 98.1MB in the end (delta: -26.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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/ldv-memsafety/memleaks_test4-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9bd23263f414c48e50ed8daa5b2985179bde28a9902b6873b1962b90b4067acc --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 19:44:24,360 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 19:44:24,362 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 19:44:24,393 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 19:44:24,393 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 19:44:24,396 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 19:44:24,398 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 19:44:24,402 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 19:44:24,404 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 19:44:24,409 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 19:44:24,410 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 19:44:24,413 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 19:44:24,413 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 19:44:24,415 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 19:44:24,416 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 19:44:24,417 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 19:44:24,420 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 19:44:24,421 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 19:44:24,422 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 19:44:24,424 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 19:44:24,427 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 19:44:24,428 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 19:44:24,429 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 19:44:24,429 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 19:44:24,431 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 19:44:24,433 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 19:44:24,433 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 19:44:24,434 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 19:44:24,434 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 19:44:24,435 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 19:44:24,435 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 19:44:24,436 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 19:44:24,437 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 19:44:24,438 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 19:44:24,438 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 19:44:24,439 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 19:44:24,439 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 19:44:24,439 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 19:44:24,439 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 19:44:24,441 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 19:44:24,441 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 19:44:24,442 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-12-14 19:44:24,485 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 19:44:24,485 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 19:44:24,486 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 19:44:24,486 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 19:44:24,487 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 19:44:24,487 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 19:44:24,487 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 19:44:24,488 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 19:44:24,488 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 19:44:24,488 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 19:44:24,503 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 19:44:24,503 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-14 19:44:24,503 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 19:44:24,504 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 19:44:24,504 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 19:44:24,504 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-14 19:44:24,504 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-14 19:44:24,504 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-14 19:44:24,504 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 19:44:24,504 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-14 19:44:24,505 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-14 19:44:24,505 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-14 19:44:24,505 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 19:44:24,505 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 19:44:24,505 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 19:44:24,505 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 19:44:24,505 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 19:44:24,506 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 19:44:24,506 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 19:44:24,506 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 19:44:24,506 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-14 19:44:24,506 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-14 19:44:24,506 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 19:44:24,507 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-14 19:44:24,507 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9bd23263f414c48e50ed8daa5b2985179bde28a9902b6873b1962b90b4067acc [2021-12-14 19:44:24,780 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 19:44:24,798 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 19:44:24,801 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 19:44:24,802 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 19:44:24,803 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 19:44:24,804 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test4-1.i [2021-12-14 19:44:24,848 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a556adef7/909557c3c3344b6ca55fad97aaa7b6cb/FLAG63609affd [2021-12-14 19:44:25,289 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 19:44:25,289 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test4-1.i [2021-12-14 19:44:25,319 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a556adef7/909557c3c3344b6ca55fad97aaa7b6cb/FLAG63609affd [2021-12-14 19:44:25,823 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a556adef7/909557c3c3344b6ca55fad97aaa7b6cb [2021-12-14 19:44:25,825 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 19:44:25,826 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 19:44:25,827 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 19:44:25,827 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 19:44:25,830 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 19:44:25,830 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 07:44:25" (1/1) ... [2021-12-14 19:44:25,831 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1eabc993 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:44:25, skipping insertion in model container [2021-12-14 19:44:25,831 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 07:44:25" (1/1) ... [2021-12-14 19:44:25,836 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 19:44:25,867 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 19:44:26,148 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 19:44:26,162 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-12-14 19:44:26,169 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 19:44:26,223 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 19:44:26,235 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 19:44:26,277 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 19:44:26,315 INFO L208 MainTranslator]: Completed translation [2021-12-14 19:44:26,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:44:26 WrapperNode [2021-12-14 19:44:26,316 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 19:44:26,317 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 19:44:26,317 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 19:44:26,317 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 19:44:26,322 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:44:26" (1/1) ... [2021-12-14 19:44:26,351 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:44:26" (1/1) ... [2021-12-14 19:44:26,366 INFO L137 Inliner]: procedures = 165, calls = 70, calls flagged for inlining = 21, calls inlined = 3, statements flattened = 22 [2021-12-14 19:44:26,366 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 19:44:26,367 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 19:44:26,367 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 19:44:26,367 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 19:44:26,373 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:44:26" (1/1) ... [2021-12-14 19:44:26,374 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:44:26" (1/1) ... [2021-12-14 19:44:26,381 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:44:26" (1/1) ... [2021-12-14 19:44:26,382 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:44:26" (1/1) ... [2021-12-14 19:44:26,391 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:44:26" (1/1) ... [2021-12-14 19:44:26,392 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:44:26" (1/1) ... [2021-12-14 19:44:26,396 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:44:26" (1/1) ... [2021-12-14 19:44:26,400 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 19:44:26,403 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 19:44:26,403 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 19:44:26,404 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 19:44:26,404 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:44:26" (1/1) ... [2021-12-14 19:44:26,409 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 19:44:26,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 19:44:26,461 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) [2021-12-14 19:44:26,472 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 [2021-12-14 19:44:26,497 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-14 19:44:26,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-14 19:44:26,498 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-14 19:44:26,498 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 19:44:26,498 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-14 19:44:26,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-14 19:44:26,498 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 19:44:26,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 19:44:26,598 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 19:44:26,599 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 19:44:26,709 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 19:44:26,716 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 19:44:26,717 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-14 19:44:26,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:44:26 BoogieIcfgContainer [2021-12-14 19:44:26,719 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 19:44:26,720 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 19:44:26,720 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 19:44:26,722 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 19:44:26,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 07:44:25" (1/3) ... [2021-12-14 19:44:26,723 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28ecaf61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 07:44:26, skipping insertion in model container [2021-12-14 19:44:26,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:44:26" (2/3) ... [2021-12-14 19:44:26,723 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28ecaf61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 07:44:26, skipping insertion in model container [2021-12-14 19:44:26,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:44:26" (3/3) ... [2021-12-14 19:44:26,724 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test4-1.i [2021-12-14 19:44:26,728 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 19:44:26,728 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-12-14 19:44:26,758 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 19:44:26,763 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, mAutomataTypeConcurrency=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 [2021-12-14 19:44:26,763 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-12-14 19:44:26,781 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 18 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-14 19:44:26,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-14 19:44:26,786 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 19:44:26,786 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 19:44:26,787 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 1 more)] === [2021-12-14 19:44:26,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 19:44:26,790 INFO L85 PathProgramCache]: Analyzing trace with hash 810748839, now seen corresponding path program 1 times [2021-12-14 19:44:26,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 19:44:26,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1331599804] [2021-12-14 19:44:26,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 19:44:26,798 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 19:44:26,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 19:44:26,800 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) [2021-12-14 19:44:26,815 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-14 19:44:26,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:44:26,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-14 19:44:26,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 19:44:26,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 19:44:26,957 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 19:44:26,958 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 19:44:26,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1331599804] [2021-12-14 19:44:26,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1331599804] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 19:44:26,959 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 19:44:26,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 19:44:26,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448762038] [2021-12-14 19:44:26,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 19:44:26,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 19:44:26,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 19:44:26,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 19:44:26,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 19:44:26,988 INFO L87 Difference]: Start difference. First operand has 22 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 18 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-14 19:44:27,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 19:44:27,029 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2021-12-14 19:44:27,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 19:44:27,031 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-12-14 19:44:27,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 19:44:27,035 INFO L225 Difference]: With dead ends: 39 [2021-12-14 19:44:27,035 INFO L226 Difference]: Without dead ends: 35 [2021-12-14 19:44:27,036 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 19:44:27,038 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 12 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 19:44:27,039 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 98 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 19:44:27,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-12-14 19:44:27,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 24. [2021-12-14 19:44:27,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 16 states have (on average 1.3125) internal successors, (21), 19 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-14 19:44:27,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2021-12-14 19:44:27,063 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 11 [2021-12-14 19:44:27,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 19:44:27,064 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2021-12-14 19:44:27,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-14 19:44:27,064 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2021-12-14 19:44:27,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-14 19:44:27,065 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 19:44:27,065 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 19:44:27,078 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-12-14 19:44:27,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 19:44:27,274 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 1 more)] === [2021-12-14 19:44:27,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 19:44:27,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1698252520, now seen corresponding path program 1 times [2021-12-14 19:44:27,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 19:44:27,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1290487306] [2021-12-14 19:44:27,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 19:44:27,276 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 19:44:27,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 19:44:27,277 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) [2021-12-14 19:44:27,278 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-14 19:44:27,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:44:27,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-14 19:44:27,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 19:44:27,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 19:44:27,338 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 19:44:27,339 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 19:44:27,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1290487306] [2021-12-14 19:44:27,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1290487306] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 19:44:27,339 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 19:44:27,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 19:44:27,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064421182] [2021-12-14 19:44:27,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 19:44:27,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 19:44:27,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 19:44:27,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 19:44:27,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 19:44:27,341 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-14 19:44:27,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 19:44:27,372 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2021-12-14 19:44:27,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-14 19:44:27,373 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-12-14 19:44:27,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 19:44:27,374 INFO L225 Difference]: With dead ends: 34 [2021-12-14 19:44:27,374 INFO L226 Difference]: Without dead ends: 32 [2021-12-14 19:44:27,374 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 19:44:27,375 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 7 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 19:44:27,375 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 66 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 19:44:27,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-12-14 19:44:27,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 20. [2021-12-14 19:44:27,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 16 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-14 19:44:27,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2021-12-14 19:44:27,379 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 11 [2021-12-14 19:44:27,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 19:44:27,379 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2021-12-14 19:44:27,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-14 19:44:27,379 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2021-12-14 19:44:27,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-14 19:44:27,380 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 19:44:27,380 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 19:44:27,389 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-12-14 19:44:27,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 19:44:27,589 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 1 more)] === [2021-12-14 19:44:27,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 19:44:27,590 INFO L85 PathProgramCache]: Analyzing trace with hash 594490405, now seen corresponding path program 1 times [2021-12-14 19:44:27,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 19:44:27,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [650964407] [2021-12-14 19:44:27,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 19:44:27,591 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 19:44:27,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 19:44:27,592 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) [2021-12-14 19:44:27,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-14 19:44:27,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:44:27,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-14 19:44:27,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 19:44:27,718 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-14 19:44:27,718 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 19:44:27,719 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 19:44:27,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [650964407] [2021-12-14 19:44:27,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [650964407] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 19:44:27,719 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 19:44:27,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 19:44:27,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485899293] [2021-12-14 19:44:27,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 19:44:27,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 19:44:27,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 19:44:27,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 19:44:27,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 19:44:27,720 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-14 19:44:27,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 19:44:27,732 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2021-12-14 19:44:27,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 19:44:27,732 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2021-12-14 19:44:27,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 19:44:27,733 INFO L225 Difference]: With dead ends: 19 [2021-12-14 19:44:27,733 INFO L226 Difference]: Without dead ends: 19 [2021-12-14 19:44:27,733 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 19:44:27,734 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 7 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 19:44:27,734 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 60 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 19:44:27,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-12-14 19:44:27,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-12-14 19:44:27,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 15 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-14 19:44:27,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2021-12-14 19:44:27,752 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 16 [2021-12-14 19:44:27,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 19:44:27,752 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2021-12-14 19:44:27,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-14 19:44:27,753 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2021-12-14 19:44:27,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-14 19:44:27,753 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 19:44:27,753 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 19:44:27,778 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-12-14 19:44:27,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 19:44:27,954 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 1 more)] === [2021-12-14 19:44:27,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 19:44:27,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1249333420, now seen corresponding path program 1 times [2021-12-14 19:44:27,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 19:44:27,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1752443550] [2021-12-14 19:44:27,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 19:44:27,955 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 19:44:27,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 19:44:27,956 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) [2021-12-14 19:44:27,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-12-14 19:44:27,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:44:27,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-14 19:44:27,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 19:44:28,180 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 19:44:28,181 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 19:44:28,182 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 19:44:28,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1752443550] [2021-12-14 19:44:28,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1752443550] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 19:44:28,182 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 19:44:28,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 19:44:28,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985799176] [2021-12-14 19:44:28,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 19:44:28,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 19:44:28,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 19:44:28,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 19:44:28,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-14 19:44:28,185 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-14 19:44:28,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 19:44:28,194 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2021-12-14 19:44:28,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 19:44:28,194 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2021-12-14 19:44:28,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 19:44:28,195 INFO L225 Difference]: With dead ends: 32 [2021-12-14 19:44:28,195 INFO L226 Difference]: Without dead ends: 32 [2021-12-14 19:44:28,195 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-14 19:44:28,196 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 15 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 47 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 19:44:28,197 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 66 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 47 Unchecked, 0.0s Time] [2021-12-14 19:44:28,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-12-14 19:44:28,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2021-12-14 19:44:28,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 24 states have internal predecessors, (26), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2021-12-14 19:44:28,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2021-12-14 19:44:28,200 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 17 [2021-12-14 19:44:28,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 19:44:28,201 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2021-12-14 19:44:28,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-14 19:44:28,201 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2021-12-14 19:44:28,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-14 19:44:28,202 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 19:44:28,202 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 19:44:28,236 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-12-14 19:44:28,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 19:44:28,436 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 1 more)] === [2021-12-14 19:44:28,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 19:44:28,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1277962571, now seen corresponding path program 1 times [2021-12-14 19:44:28,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 19:44:28,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1370561511] [2021-12-14 19:44:28,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 19:44:28,437 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 19:44:28,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 19:44:28,444 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) [2021-12-14 19:44:28,446 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-12-14 19:44:28,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:44:28,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-14 19:44:28,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 19:44:28,575 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-14 19:44:28,576 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 19:44:28,581 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 19:44:28,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1370561511] [2021-12-14 19:44:28,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1370561511] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 19:44:28,581 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 19:44:28,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 19:44:28,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096492390] [2021-12-14 19:44:28,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 19:44:28,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 19:44:28,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 19:44:28,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 19:44:28,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-14 19:44:28,583 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-14 19:44:28,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 19:44:28,646 INFO L93 Difference]: Finished difference Result 40 states and 42 transitions. [2021-12-14 19:44:28,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 19:44:28,647 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2021-12-14 19:44:28,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 19:44:28,647 INFO L225 Difference]: With dead ends: 40 [2021-12-14 19:44:28,647 INFO L226 Difference]: Without dead ends: 40 [2021-12-14 19:44:28,647 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-14 19:44:28,648 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 14 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 19:44:28,648 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 60 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 19:44:28,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-12-14 19:44:28,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 37. [2021-12-14 19:44:28,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 29 states have internal predecessors, (31), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2021-12-14 19:44:28,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2021-12-14 19:44:28,652 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 17 [2021-12-14 19:44:28,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 19:44:28,652 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2021-12-14 19:44:28,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-14 19:44:28,652 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2021-12-14 19:44:28,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-14 19:44:28,652 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 19:44:28,653 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 19:44:28,666 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-12-14 19:44:28,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 19:44:28,859 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 1 more)] === [2021-12-14 19:44:28,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 19:44:28,860 INFO L85 PathProgramCache]: Analyzing trace with hash 955930413, now seen corresponding path program 2 times [2021-12-14 19:44:28,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 19:44:28,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [394588173] [2021-12-14 19:44:28,860 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-14 19:44:28,860 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 19:44:28,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 19:44:28,861 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) [2021-12-14 19:44:28,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-12-14 19:44:28,900 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-14 19:44:28,900 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-14 19:44:28,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-14 19:44:28,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 19:44:28,980 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-14 19:44:28,980 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 19:44:28,980 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 19:44:28,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [394588173] [2021-12-14 19:44:28,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [394588173] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 19:44:28,982 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 19:44:28,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 19:44:28,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646152018] [2021-12-14 19:44:28,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 19:44:28,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 19:44:28,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 19:44:28,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 19:44:28,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-14 19:44:28,984 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-14 19:44:29,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 19:44:29,027 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2021-12-14 19:44:29,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 19:44:29,027 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2021-12-14 19:44:29,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 19:44:29,028 INFO L225 Difference]: With dead ends: 39 [2021-12-14 19:44:29,028 INFO L226 Difference]: Without dead ends: 39 [2021-12-14 19:44:29,028 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-14 19:44:29,030 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 19 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 19:44:29,031 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 38 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 19:44:29,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-12-14 19:44:29,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 33. [2021-12-14 19:44:29,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 24 states have (on average 1.125) internal successors, (27), 26 states have internal predecessors, (27), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2021-12-14 19:44:29,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2021-12-14 19:44:29,041 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 17 [2021-12-14 19:44:29,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 19:44:29,041 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2021-12-14 19:44:29,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-14 19:44:29,041 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2021-12-14 19:44:29,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-14 19:44:29,041 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 19:44:29,042 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 19:44:29,053 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-12-14 19:44:29,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 19:44:29,253 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 1 more)] === [2021-12-14 19:44:29,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 19:44:29,253 INFO L85 PathProgramCache]: Analyzing trace with hash 74630407, now seen corresponding path program 1 times [2021-12-14 19:44:29,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 19:44:29,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1267414044] [2021-12-14 19:44:29,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 19:44:29,254 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 19:44:29,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 19:44:29,255 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) [2021-12-14 19:44:29,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-12-14 19:44:29,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:44:29,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-14 19:44:29,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 19:44:29,342 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 [2021-12-14 19:44:29,366 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-14 19:44:29,366 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 19:44:29,367 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 19:44:29,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1267414044] [2021-12-14 19:44:29,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1267414044] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 19:44:29,367 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 19:44:29,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 19:44:29,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116055281] [2021-12-14 19:44:29,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 19:44:29,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 19:44:29,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 19:44:29,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 19:44:29,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 19:44:29,369 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-14 19:44:29,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 19:44:29,404 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2021-12-14 19:44:29,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 19:44:29,406 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2021-12-14 19:44:29,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 19:44:29,408 INFO L225 Difference]: With dead ends: 32 [2021-12-14 19:44:29,408 INFO L226 Difference]: Without dead ends: 32 [2021-12-14 19:44:29,408 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 19:44:29,409 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 19:44:29,410 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 42 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 19:44:29,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-12-14 19:44:29,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 26. [2021-12-14 19:44:29,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 19 states have (on average 1.105263157894737) internal successors, (21), 20 states have internal predecessors, (21), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-12-14 19:44:29,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2021-12-14 19:44:29,418 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 18 [2021-12-14 19:44:29,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 19:44:29,419 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2021-12-14 19:44:29,419 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-14 19:44:29,420 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2021-12-14 19:44:29,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-14 19:44:29,420 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 19:44:29,420 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 19:44:29,441 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-12-14 19:44:29,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 19:44:29,627 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 1 more)] === [2021-12-14 19:44:29,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 19:44:29,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1294621142, now seen corresponding path program 1 times [2021-12-14 19:44:29,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 19:44:29,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1263557954] [2021-12-14 19:44:29,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 19:44:29,629 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 19:44:29,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 19:44:29,644 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) [2021-12-14 19:44:29,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-12-14 19:44:29,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 19:44:29,683 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 19:44:29,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 19:44:29,728 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-12-14 19:44:29,728 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-14 19:44:29,729 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (3 of 4 remaining) [2021-12-14 19:44:29,730 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE (2 of 4 remaining) [2021-12-14 19:44:29,731 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE (1 of 4 remaining) [2021-12-14 19:44:29,731 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (0 of 4 remaining) [2021-12-14 19:44:29,739 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-12-14 19:44:29,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 19:44:29,934 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1] [2021-12-14 19:44:29,936 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-14 19:44:29,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 07:44:29 BoogieIcfgContainer [2021-12-14 19:44:29,953 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-14 19:44:29,954 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-14 19:44:29,954 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-14 19:44:29,954 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-14 19:44:29,955 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:44:26" (3/4) ... [2021-12-14 19:44:29,957 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-14 19:44:29,957 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-14 19:44:29,958 INFO L158 Benchmark]: Toolchain (without parser) took 4131.18ms. Allocated memory was 50.3MB in the beginning and 60.8MB in the end (delta: 10.5MB). Free memory was 33.6MB in the beginning and 36.0MB in the end (delta: -2.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-14 19:44:29,958 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 41.9MB. Free memory was 24.1MB in the beginning and 24.1MB in the end (delta: 45.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 19:44:29,958 INFO L158 Benchmark]: CACSL2BoogieTranslator took 489.06ms. Allocated memory is still 50.3MB. Free memory was 33.4MB in the beginning and 26.4MB in the end (delta: 7.1MB). Peak memory consumption was 13.3MB. Max. memory is 16.1GB. [2021-12-14 19:44:29,958 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.71ms. Allocated memory is still 50.3MB. Free memory was 26.2MB in the beginning and 24.1MB in the end (delta: 2.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-14 19:44:29,959 INFO L158 Benchmark]: Boogie Preprocessor took 35.12ms. Allocated memory is still 50.3MB. Free memory was 24.1MB in the beginning and 22.9MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 19:44:29,959 INFO L158 Benchmark]: RCFGBuilder took 316.12ms. Allocated memory was 50.3MB in the beginning and 60.8MB in the end (delta: 10.5MB). Free memory was 22.9MB in the beginning and 34.1MB in the end (delta: -11.2MB). Peak memory consumption was 6.0MB. Max. memory is 16.1GB. [2021-12-14 19:44:29,959 INFO L158 Benchmark]: TraceAbstraction took 3233.60ms. Allocated memory is still 60.8MB. Free memory was 33.6MB in the beginning and 36.3MB in the end (delta: -2.7MB). Peak memory consumption was 14.3MB. Max. memory is 16.1GB. [2021-12-14 19:44:29,960 INFO L158 Benchmark]: Witness Printer took 3.03ms. Allocated memory is still 60.8MB. Free memory was 36.3MB in the beginning and 36.0MB in the end (delta: 357.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 19:44:29,962 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 41.9MB. Free memory was 24.1MB in the beginning and 24.1MB in the end (delta: 45.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 489.06ms. Allocated memory is still 50.3MB. Free memory was 33.4MB in the beginning and 26.4MB in the end (delta: 7.1MB). Peak memory consumption was 13.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.71ms. Allocated memory is still 50.3MB. Free memory was 26.2MB in the beginning and 24.1MB in the end (delta: 2.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.12ms. Allocated memory is still 50.3MB. Free memory was 24.1MB in the beginning and 22.9MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 316.12ms. Allocated memory was 50.3MB in the beginning and 60.8MB in the end (delta: 10.5MB). Free memory was 22.9MB in the beginning and 34.1MB in the end (delta: -11.2MB). Peak memory consumption was 6.0MB. Max. memory is 16.1GB. * TraceAbstraction took 3233.60ms. Allocated memory is still 60.8MB. Free memory was 33.6MB in the beginning and 36.3MB in the end (delta: -2.7MB). Peak memory consumption was 14.3MB. Max. memory is 16.1GB. * Witness Printer took 3.03ms. Allocated memory is still 60.8MB. Free memory was 36.3MB in the beginning and 36.0MB in the end (delta: 357.6kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 764]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 764. Possible FailurePath: [L569] struct ldv_list_head ldv_global_msg_list = { &(ldv_global_msg_list), &(ldv_global_msg_list) }; VAL [ldv_global_msg_list={1:0}] [L765] CALL entry_point() [L758] CALL, EXPR ldv_malloc(sizeof(int)) VAL [\old(size)=4, ldv_global_msg_list={1:0}] [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); [L758] RET, EXPR ldv_malloc(sizeof(int)) VAL [ldv_global_msg_list={1:0}, ldv_malloc(sizeof(int))={6:0}] [L758] int *p = (int *)ldv_malloc(sizeof(int)); [L759] COND TRUE \read(*p) VAL [ldv_global_msg_list={1:0}, p={6:0}] [L760] CALL, EXPR ldv_malloc(sizeof(int)) VAL [\old(size)=4, ldv_global_msg_list={1:0}] [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); [L760] RET, EXPR ldv_malloc(sizeof(int)) VAL [ldv_global_msg_list={1:0}, ldv_malloc(sizeof(int))={2:0}, p={6:0}] [L760] int *q = (int *)ldv_malloc(sizeof(int)); [L761] free(q) VAL [ldv_global_msg_list={1:0}, p={6:0}, q={2:0}] [L761] free(q) VAL [ldv_global_msg_list={1:0}, p={6:0}, q={2:0}] [L761] free(q) [L765] RET entry_point() - UnprovableResult [Line: 761]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 761]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 761]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 22 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 3.2s, OverallIterations: 8, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 79 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 74 mSDsluCounter, 430 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 47 IncrementalHoareTripleChecker+Unchecked, 280 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 161 IncrementalHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 150 mSDtfsCounter, 161 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 100 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=5, InterpolantAutomatonStates: 38, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 39 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 127 NumberOfCodeBlocks, 120 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 100 ConstructedInterpolants, 12 QuantifiedInterpolants, 444 SizeOfPredicates, 1 NumberOfNonLiveVariables, 343 ConjunctsInSsa, 35 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 20/20 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 [2021-12-14 19:44:30,008 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... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample