./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../sv-benchmarks/c/verifythis/tree_max.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 3a877d22 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/verifythis/tree_max.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-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-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e98a60ea9ee0c00575c08606ce8b95d0660c5b235c5932147dfee4b13512f57c --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 13:54:40,520 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 13:54:40,522 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 13:54:40,558 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 13:54:40,559 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 13:54:40,562 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 13:54:40,564 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 13:54:40,567 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 13:54:40,568 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 13:54:40,574 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 13:54:40,575 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 13:54:40,576 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 13:54:40,577 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 13:54:40,579 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 13:54:40,581 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 13:54:40,582 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 13:54:40,584 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 13:54:40,584 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 13:54:40,589 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 13:54:40,596 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 13:54:40,597 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 13:54:40,598 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 13:54:40,599 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 13:54:40,600 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 13:54:40,606 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 13:54:40,606 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 13:54:40,606 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 13:54:40,608 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 13:54:40,608 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 13:54:40,609 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 13:54:40,609 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 13:54:40,610 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 13:54:40,612 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 13:54:40,613 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 13:54:40,614 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 13:54:40,614 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 13:54:40,614 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 13:54:40,615 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 13:54:40,615 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 13:54:40,616 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 13:54:40,616 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 13:54:40,617 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2021-12-15 13:54:40,650 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 13:54:40,650 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 13:54:40,651 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 13:54:40,651 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 13:54:40,652 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 13:54:40,652 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 13:54:40,652 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 13:54:40,652 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 13:54:40,653 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 13:54:40,653 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 13:54:40,653 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 13:54:40,653 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-15 13:54:40,653 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 13:54:40,654 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 13:54:40,654 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 13:54:40,654 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-15 13:54:40,654 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-15 13:54:40,654 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 13:54:40,655 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 13:54:40,655 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 13:54:40,655 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 13:54:40,655 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 13:54:40,655 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 13:54:40,656 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 13:54:40,656 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 13:54:40,656 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 13:54:40,656 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 13:54:40,656 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 13:54:40,657 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 13:54:40,657 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 13:54:40,657 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e98a60ea9ee0c00575c08606ce8b95d0660c5b235c5932147dfee4b13512f57c [2021-12-15 13:54:40,933 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 13:54:40,959 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 13:54:40,961 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 13:54:40,963 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 13:54:40,963 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 13:54:40,965 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/verifythis/tree_max.c [2021-12-15 13:54:41,031 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dfbdbf574/2d4546f0b12f42a4af651c07a0aeae4e/FLAGf28041e5c [2021-12-15 13:54:41,374 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 13:54:41,374 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/verifythis/tree_max.c [2021-12-15 13:54:41,380 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dfbdbf574/2d4546f0b12f42a4af651c07a0aeae4e/FLAGf28041e5c [2021-12-15 13:54:41,812 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dfbdbf574/2d4546f0b12f42a4af651c07a0aeae4e [2021-12-15 13:54:41,816 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 13:54:41,818 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 13:54:41,819 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 13:54:41,819 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 13:54:41,822 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 13:54:41,822 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 01:54:41" (1/1) ... [2021-12-15 13:54:41,823 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41fec984 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:54:41, skipping insertion in model container [2021-12-15 13:54:41,824 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 01:54:41" (1/1) ... [2021-12-15 13:54:41,829 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 13:54:41,843 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 13:54:41,949 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/verifythis/tree_max.c[544,557] [2021-12-15 13:54:41,985 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 13:54:41,997 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) [2021-12-15 13:54:41,998 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@295a087e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:54:41, skipping insertion in model container [2021-12-15 13:54:41,999 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 13:54:42,000 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-12-15 13:54:42,002 INFO L158 Benchmark]: Toolchain (without parser) took 182.83ms. Allocated memory was 94.4MB in the beginning and 117.4MB in the end (delta: 23.1MB). Free memory was 54.3MB in the beginning and 95.9MB in the end (delta: -41.6MB). Peak memory consumption was 10.4MB. Max. memory is 16.1GB. [2021-12-15 13:54:42,004 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 94.4MB. Free memory was 71.2MB in the beginning and 71.1MB in the end (delta: 91.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 13:54:42,006 INFO L158 Benchmark]: CACSL2BoogieTranslator took 180.67ms. Allocated memory was 94.4MB in the beginning and 117.4MB in the end (delta: 23.1MB). Free memory was 54.1MB in the beginning and 96.0MB in the end (delta: -41.9MB). Peak memory consumption was 10.4MB. Max. memory is 16.1GB. [2021-12-15 13:54:42,010 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 94.4MB. Free memory was 71.2MB in the beginning and 71.1MB in the end (delta: 91.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 180.67ms. Allocated memory was 94.4MB in the beginning and 117.4MB in the end (delta: 23.1MB). Free memory was 54.1MB in the beginning and 96.0MB in the end (delta: -41.9MB). Peak memory consumption was 10.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 27]: 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/verifythis/tree_max.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-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-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e98a60ea9ee0c00575c08606ce8b95d0660c5b235c5932147dfee4b13512f57c --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 13:54:43,736 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 13:54:43,738 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 13:54:43,767 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 13:54:43,767 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 13:54:43,771 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 13:54:43,774 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 13:54:43,777 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 13:54:43,780 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 13:54:43,781 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 13:54:43,782 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 13:54:43,786 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 13:54:43,788 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 13:54:43,791 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 13:54:43,792 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 13:54:43,794 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 13:54:43,795 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 13:54:43,799 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 13:54:43,800 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 13:54:43,804 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 13:54:43,807 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 13:54:43,809 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 13:54:43,809 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 13:54:43,810 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 13:54:43,813 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 13:54:43,814 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 13:54:43,815 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 13:54:43,816 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 13:54:43,816 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 13:54:43,817 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 13:54:43,817 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 13:54:43,818 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 13:54:43,819 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 13:54:43,820 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 13:54:43,821 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 13:54:43,821 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 13:54:43,822 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 13:54:43,822 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 13:54:43,822 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 13:54:43,824 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 13:54:43,824 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 13:54:43,825 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-32bit-Automizer_Bitvector.epf [2021-12-15 13:54:43,844 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 13:54:43,844 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 13:54:43,844 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 13:54:43,844 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 13:54:43,845 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 13:54:43,845 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 13:54:43,845 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 13:54:43,846 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 13:54:43,846 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 13:54:43,846 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 13:54:43,846 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 13:54:43,846 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-15 13:54:43,846 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 13:54:43,846 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 13:54:43,847 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 13:54:43,847 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-15 13:54:43,847 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-15 13:54:43,847 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 13:54:43,847 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 13:54:43,847 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-15 13:54:43,847 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-15 13:54:43,848 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 13:54:43,848 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 13:54:43,848 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 13:54:43,855 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 13:54:43,856 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 13:54:43,856 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 13:54:43,856 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 13:54:43,857 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 13:54:43,857 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-15 13:54:43,857 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-15 13:54:43,857 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 13:54:43,858 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-15 13:54:43,858 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e98a60ea9ee0c00575c08606ce8b95d0660c5b235c5932147dfee4b13512f57c [2021-12-15 13:54:44,167 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 13:54:44,192 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 13:54:44,195 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 13:54:44,196 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 13:54:44,198 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 13:54:44,199 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/verifythis/tree_max.c [2021-12-15 13:54:44,268 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e786542a/c27beddbf4dd4ee581d34b21b8e8ac18/FLAGefee77595 [2021-12-15 13:54:44,745 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 13:54:44,746 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/verifythis/tree_max.c [2021-12-15 13:54:44,752 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e786542a/c27beddbf4dd4ee581d34b21b8e8ac18/FLAGefee77595 [2021-12-15 13:54:44,770 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e786542a/c27beddbf4dd4ee581d34b21b8e8ac18 [2021-12-15 13:54:44,773 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 13:54:44,775 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 13:54:44,778 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 13:54:44,779 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 13:54:44,782 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 13:54:44,783 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 01:54:44" (1/1) ... [2021-12-15 13:54:44,784 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cf32e90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:54:44, skipping insertion in model container [2021-12-15 13:54:44,784 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 01:54:44" (1/1) ... [2021-12-15 13:54:44,790 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 13:54:44,806 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 13:54:44,964 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/verifythis/tree_max.c[544,557] [2021-12-15 13:54:44,995 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 13:54:45,010 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-12-15 13:54:45,017 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 13:54:45,044 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/verifythis/tree_max.c[544,557] [2021-12-15 13:54:45,064 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 13:54:45,083 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 13:54:45,098 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/verifythis/tree_max.c[544,557] [2021-12-15 13:54:45,114 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 13:54:45,130 INFO L208 MainTranslator]: Completed translation [2021-12-15 13:54:45,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:54:45 WrapperNode [2021-12-15 13:54:45,131 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 13:54:45,132 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 13:54:45,132 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 13:54:45,133 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 13:54:45,139 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:54:45" (1/1) ... [2021-12-15 13:54:45,148 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:54:45" (1/1) ... [2021-12-15 13:54:45,171 INFO L137 Inliner]: procedures = 26, calls = 28, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 37 [2021-12-15 13:54:45,171 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 13:54:45,172 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 13:54:45,173 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 13:54:45,173 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 13:54:45,180 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:54:45" (1/1) ... [2021-12-15 13:54:45,181 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:54:45" (1/1) ... [2021-12-15 13:54:45,187 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:54:45" (1/1) ... [2021-12-15 13:54:45,188 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:54:45" (1/1) ... [2021-12-15 13:54:45,206 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:54:45" (1/1) ... [2021-12-15 13:54:45,211 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:54:45" (1/1) ... [2021-12-15 13:54:45,213 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:54:45" (1/1) ... [2021-12-15 13:54:45,219 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 13:54:45,222 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 13:54:45,222 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 13:54:45,222 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 13:54:45,224 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:54:45" (1/1) ... [2021-12-15 13:54:45,230 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 13:54:45,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 13:54:45,249 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) [2021-12-15 13:54:45,276 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 [2021-12-15 13:54:45,292 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 13:54:45,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-15 13:54:45,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-15 13:54:45,292 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-12-15 13:54:45,292 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-15 13:54:45,293 INFO L130 BoogieDeclarations]: Found specification of procedure max [2021-12-15 13:54:45,293 INFO L138 BoogieDeclarations]: Found implementation of procedure max [2021-12-15 13:54:45,293 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_tree [2021-12-15 13:54:45,293 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_tree [2021-12-15 13:54:45,293 INFO L130 BoogieDeclarations]: Found specification of procedure check [2021-12-15 13:54:45,293 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2021-12-15 13:54:45,294 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-15 13:54:45,294 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 13:54:45,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 13:54:45,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-12-15 13:54:45,380 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 13:54:45,382 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 13:54:45,625 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 13:54:45,630 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 13:54:45,630 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-15 13:54:45,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 01:54:45 BoogieIcfgContainer [2021-12-15 13:54:45,632 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 13:54:45,633 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 13:54:45,633 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 13:54:45,636 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 13:54:45,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 01:54:44" (1/3) ... [2021-12-15 13:54:45,637 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c28e376 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 01:54:45, skipping insertion in model container [2021-12-15 13:54:45,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:54:45" (2/3) ... [2021-12-15 13:54:45,637 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c28e376 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 01:54:45, skipping insertion in model container [2021-12-15 13:54:45,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 01:54:45" (3/3) ... [2021-12-15 13:54:45,639 INFO L111 eAbstractionObserver]: Analyzing ICFG tree_max.c [2021-12-15 13:54:45,643 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 13:54:45,643 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2021-12-15 13:54:45,693 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 13:54:45,712 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 [2021-12-15 13:54:45,713 INFO L340 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2021-12-15 13:54:45,734 INFO L276 IsEmpty]: Start isEmpty. Operand has 72 states, 39 states have (on average 1.6923076923076923) internal successors, (66), 59 states have internal predecessors, (66), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-12-15 13:54:45,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-15 13:54:45,745 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 13:54:45,746 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-15 13:54:45,746 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting nondet_treeErr0REQUIRES_VIOLATION === [maxErr0REQUIRES_VIOLATION, maxErr1REQUIRES_VIOLATION, maxErr2REQUIRES_VIOLATION, maxErr3REQUIRES_VIOLATION, maxErr4REQUIRES_VIOLATION (and 15 more)] === [2021-12-15 13:54:45,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 13:54:45,755 INFO L85 PathProgramCache]: Analyzing trace with hash 73597257, now seen corresponding path program 1 times [2021-12-15 13:54:45,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 13:54:45,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [98386530] [2021-12-15 13:54:45,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 13:54:45,767 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 13:54:45,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 13:54:45,773 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) [2021-12-15 13:54:45,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-15 13:54:45,831 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-12-15 13:54:46,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 13:54:46,029 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.removeSuperfluousVars(UnmodifiableTransFormula.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.finishConstruction(TransFormulaBuilder.java:273) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.constructGlobalVarsAssignment(OldVarsAssignmentCache.java:155) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.getGlobalVarsAssignment(OldVarsAssignmentCache.java:93) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:89) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:1) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedFormulas.getGlobalVarAssignment(NestedFormulas.java:126) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckUtils.decoupleArrayValues(TraceCheckUtils.java:384) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:87) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:132) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-12-15 13:54:46,034 INFO L158 Benchmark]: Toolchain (without parser) took 1256.65ms. Allocated memory was 54.5MB in the beginning and 67.1MB in the end (delta: 12.6MB). Free memory was 33.4MB in the beginning and 38.8MB in the end (delta: -5.4MB). Peak memory consumption was 7.0MB. Max. memory is 16.1GB. [2021-12-15 13:54:46,034 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 54.5MB. Free memory was 36.7MB in the beginning and 36.6MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 13:54:46,035 INFO L158 Benchmark]: CACSL2BoogieTranslator took 352.85ms. Allocated memory was 54.5MB in the beginning and 67.1MB in the end (delta: 12.6MB). Free memory was 33.2MB in the beginning and 48.8MB in the end (delta: -15.6MB). Peak memory consumption was 9.3MB. Max. memory is 16.1GB. [2021-12-15 13:54:46,035 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.39ms. Allocated memory is still 67.1MB. Free memory was 48.6MB in the beginning and 47.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 13:54:46,036 INFO L158 Benchmark]: Boogie Preprocessor took 48.47ms. Allocated memory is still 67.1MB. Free memory was 47.1MB in the beginning and 45.7MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 13:54:46,036 INFO L158 Benchmark]: RCFGBuilder took 410.48ms. Allocated memory is still 67.1MB. Free memory was 45.4MB in the beginning and 47.6MB in the end (delta: -2.2MB). Peak memory consumption was 16.6MB. Max. memory is 16.1GB. [2021-12-15 13:54:46,037 INFO L158 Benchmark]: TraceAbstraction took 398.11ms. Allocated memory is still 67.1MB. Free memory was 47.1MB in the beginning and 38.8MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 13:54:46,043 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 54.5MB. Free memory was 36.7MB in the beginning and 36.6MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 352.85ms. Allocated memory was 54.5MB in the beginning and 67.1MB in the end (delta: 12.6MB). Free memory was 33.2MB in the beginning and 48.8MB in the end (delta: -15.6MB). Peak memory consumption was 9.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.39ms. Allocated memory is still 67.1MB. Free memory was 48.6MB in the beginning and 47.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 48.47ms. Allocated memory is still 67.1MB. Free memory was 47.1MB in the beginning and 45.7MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 410.48ms. Allocated memory is still 67.1MB. Free memory was 45.4MB in the beginning and 47.6MB in the end (delta: -2.2MB). Peak memory consumption was 16.6MB. Max. memory is 16.1GB. * TraceAbstraction took 398.11ms. Allocated memory is still 67.1MB. Free memory was 47.1MB in the beginning and 38.8MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-15 13:54:46,082 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: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable