./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 b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6e7b47-cb5d-4f39-829e-8782559cf0b9/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6e7b47-cb5d-4f39-829e-8782559cf0b9/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6e7b47-cb5d-4f39-829e-8782559cf0b9/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6e7b47-cb5d-4f39-829e-8782559cf0b9/bin/uautomizer-UnR33cPsHg/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/verifythis/tree_max.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6e7b47-cb5d-4f39-829e-8782559cf0b9/bin/uautomizer-UnR33cPsHg/config/svcomp-MemCleanup-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6e7b47-cb5d-4f39-829e-8782559cf0b9/bin/uautomizer-UnR33cPsHg --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 ................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6e7b47-cb5d-4f39-829e-8782559cf0b9/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6e7b47-cb5d-4f39-829e-8782559cf0b9/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6e7b47-cb5d-4f39-829e-8782559cf0b9/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6e7b47-cb5d-4f39-829e-8782559cf0b9/bin/uautomizer-UnR33cPsHg/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/verifythis/tree_max.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6e7b47-cb5d-4f39-829e-8782559cf0b9/bin/uautomizer-UnR33cPsHg/config/svcomp-MemCleanup-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6e7b47-cb5d-4f39-829e-8782559cf0b9/bin/uautomizer-UnR33cPsHg --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 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 08:47:55,408 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 08:47:55,410 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 08:47:55,468 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 08:47:55,469 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 08:47:55,474 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 08:47:55,477 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 08:47:55,487 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 08:47:55,490 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 08:47:55,499 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 08:47:55,500 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 08:47:55,502 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 08:47:55,503 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 08:47:55,506 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 08:47:55,509 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 08:47:55,517 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 08:47:55,520 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 08:47:55,521 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 08:47:55,524 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 08:47:55,532 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 08:47:55,535 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 08:47:55,537 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 08:47:55,541 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 08:47:55,542 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 08:47:55,549 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 08:47:55,550 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 08:47:55,550 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 08:47:55,553 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 08:47:55,553 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 08:47:55,555 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 08:47:55,556 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 08:47:55,557 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 08:47:55,560 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 08:47:55,561 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 08:47:55,563 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 08:47:55,563 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 08:47:55,564 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 08:47:55,565 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 08:47:55,565 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 08:47:55,566 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 08:47:55,567 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 08:47:55,568 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6e7b47-cb5d-4f39-829e-8782559cf0b9/bin/uautomizer-UnR33cPsHg/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2021-10-28 08:47:55,623 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 08:47:55,624 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 08:47:55,624 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 08:47:55,624 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 08:47:55,626 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 08:47:55,626 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 08:47:55,626 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 08:47:55,627 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 08:47:55,627 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 08:47:55,627 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 08:47:55,628 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 08:47:55,628 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 08:47:55,628 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 08:47:55,628 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-28 08:47:55,629 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-28 08:47:55,629 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 08:47:55,629 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-28 08:47:55,630 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 08:47:55,630 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 08:47:55,630 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 08:47:55,630 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 08:47:55,631 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 08:47:55,631 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 08:47:55,631 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 08:47:55,632 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 08:47:55,632 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 08:47:55,632 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 08:47:55,633 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 08:47:55,633 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6e7b47-cb5d-4f39-829e-8782559cf0b9/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6e7b47-cb5d-4f39-829e-8782559cf0b9/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e98a60ea9ee0c00575c08606ce8b95d0660c5b235c5932147dfee4b13512f57c [2021-10-28 08:47:55,942 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 08:47:55,980 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 08:47:55,983 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 08:47:55,985 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 08:47:55,986 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 08:47:55,989 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6e7b47-cb5d-4f39-829e-8782559cf0b9/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/verifythis/tree_max.c [2021-10-28 08:47:56,070 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6e7b47-cb5d-4f39-829e-8782559cf0b9/bin/uautomizer-UnR33cPsHg/data/f243a4573/61d93368181f4a32b619d0493209d702/FLAGf2baaa506 [2021-10-28 08:47:56,604 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 08:47:56,605 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6e7b47-cb5d-4f39-829e-8782559cf0b9/sv-benchmarks/c/verifythis/tree_max.c [2021-10-28 08:47:56,618 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6e7b47-cb5d-4f39-829e-8782559cf0b9/bin/uautomizer-UnR33cPsHg/data/f243a4573/61d93368181f4a32b619d0493209d702/FLAGf2baaa506 [2021-10-28 08:47:56,960 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6e7b47-cb5d-4f39-829e-8782559cf0b9/bin/uautomizer-UnR33cPsHg/data/f243a4573/61d93368181f4a32b619d0493209d702 [2021-10-28 08:47:56,963 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 08:47:56,965 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-28 08:47:56,970 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 08:47:56,971 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 08:47:56,990 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 08:47:56,991 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:47:56" (1/1) ... [2021-10-28 08:47:56,992 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@156021ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:47:56, skipping insertion in model container [2021-10-28 08:47:56,992 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:47:56" (1/1) ... [2021-10-28 08:47:56,999 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 08:47:57,016 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 08:47:57,234 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6e7b47-cb5d-4f39-829e-8782559cf0b9/sv-benchmarks/c/verifythis/tree_max.c[544,557] [2021-10-28 08:47:57,271 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:47:57,288 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) [2021-10-28 08:47:57,289 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@590bbefc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:47:57, skipping insertion in model container [2021-10-28 08:47:57,290 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 08:47:57,291 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-10-28 08:47:57,295 INFO L168 Benchmark]: Toolchain (without parser) took 326.51 ms. Allocated memory was 83.9 MB in the beginning and 109.1 MB in the end (delta: 25.2 MB). Free memory was 49.1 MB in the beginning and 85.4 MB in the end (delta: -36.2 MB). Peak memory consumption was 7.9 MB. Max. memory is 16.1 GB. [2021-10-28 08:47:57,298 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 83.9 MB. Free memory was 62.5 MB in the beginning and 62.5 MB in the end (delta: 25.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:47:57,301 INFO L168 Benchmark]: CACSL2BoogieTranslator took 320.15 ms. Allocated memory was 83.9 MB in the beginning and 109.1 MB in the end (delta: 25.2 MB). Free memory was 49.0 MB in the beginning and 85.4 MB in the end (delta: -36.4 MB). Peak memory consumption was 7.9 MB. Max. memory is 16.1 GB. [2021-10-28 08:47:57,304 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 83.9 MB. Free memory was 62.5 MB in the beginning and 62.5 MB in the end (delta: 25.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 320.15 ms. Allocated memory was 83.9 MB in the beginning and 109.1 MB in the end (delta: 25.2 MB). Free memory was 49.0 MB in the beginning and 85.4 MB in the end (delta: -36.4 MB). Peak memory consumption was 7.9 MB. Max. memory is 16.1 GB. * 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... ### Bit-precise run ### This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 08:47:59,788 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 08:47:59,790 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 08:47:59,846 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 08:47:59,847 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 08:47:59,851 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 08:47:59,853 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 08:47:59,864 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 08:47:59,867 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 08:47:59,874 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 08:47:59,876 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 08:47:59,878 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 08:47:59,878 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 08:47:59,882 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 08:47:59,884 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 08:47:59,890 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 08:47:59,892 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 08:47:59,893 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 08:47:59,896 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 08:47:59,923 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 08:47:59,925 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 08:47:59,927 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 08:47:59,931 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 08:47:59,933 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 08:47:59,943 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 08:47:59,943 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 08:47:59,943 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 08:47:59,946 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 08:47:59,946 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 08:47:59,948 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 08:47:59,948 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 08:47:59,949 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 08:47:59,951 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 08:47:59,952 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 08:47:59,954 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 08:47:59,954 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 08:47:59,955 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 08:47:59,955 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 08:47:59,956 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 08:47:59,958 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 08:47:59,959 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 08:47:59,964 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6e7b47-cb5d-4f39-829e-8782559cf0b9/bin/uautomizer-UnR33cPsHg/config/svcomp-MemCleanup-32bit-Automizer_Bitvector.epf [2021-10-28 08:48:00,010 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 08:48:00,010 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 08:48:00,011 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 08:48:00,011 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 08:48:00,015 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 08:48:00,015 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 08:48:00,015 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 08:48:00,016 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 08:48:00,016 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 08:48:00,016 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 08:48:00,017 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 08:48:00,018 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 08:48:00,018 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 08:48:00,018 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-28 08:48:00,019 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-28 08:48:00,019 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 08:48:00,019 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-28 08:48:00,019 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-28 08:48:00,020 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-28 08:48:00,020 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 08:48:00,020 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 08:48:00,020 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 08:48:00,021 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 08:48:00,021 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 08:48:00,021 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 08:48:00,021 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 08:48:00,022 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 08:48:00,022 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-28 08:48:00,023 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-28 08:48:00,023 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 08:48:00,023 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-28 08:48:00,023 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6e7b47-cb5d-4f39-829e-8782559cf0b9/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6e7b47-cb5d-4f39-829e-8782559cf0b9/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e98a60ea9ee0c00575c08606ce8b95d0660c5b235c5932147dfee4b13512f57c [2021-10-28 08:48:00,485 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 08:48:00,521 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 08:48:00,525 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 08:48:00,526 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 08:48:00,527 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 08:48:00,528 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6e7b47-cb5d-4f39-829e-8782559cf0b9/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/verifythis/tree_max.c [2021-10-28 08:48:00,628 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6e7b47-cb5d-4f39-829e-8782559cf0b9/bin/uautomizer-UnR33cPsHg/data/c76268299/de20196e2496441d9e392b45f4599c6e/FLAG1ff693e2d [2021-10-28 08:48:01,161 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 08:48:01,162 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6e7b47-cb5d-4f39-829e-8782559cf0b9/sv-benchmarks/c/verifythis/tree_max.c [2021-10-28 08:48:01,169 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6e7b47-cb5d-4f39-829e-8782559cf0b9/bin/uautomizer-UnR33cPsHg/data/c76268299/de20196e2496441d9e392b45f4599c6e/FLAG1ff693e2d [2021-10-28 08:48:01,523 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6e7b47-cb5d-4f39-829e-8782559cf0b9/bin/uautomizer-UnR33cPsHg/data/c76268299/de20196e2496441d9e392b45f4599c6e [2021-10-28 08:48:01,525 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 08:48:01,527 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-28 08:48:01,529 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 08:48:01,529 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 08:48:01,537 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 08:48:01,537 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:48:01" (1/1) ... [2021-10-28 08:48:01,538 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35776edc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:48:01, skipping insertion in model container [2021-10-28 08:48:01,538 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:48:01" (1/1) ... [2021-10-28 08:48:01,546 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 08:48:01,563 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 08:48:01,713 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6e7b47-cb5d-4f39-829e-8782559cf0b9/sv-benchmarks/c/verifythis/tree_max.c[544,557] [2021-10-28 08:48:01,734 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:48:01,770 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-28 08:48:01,775 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 08:48:01,779 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6e7b47-cb5d-4f39-829e-8782559cf0b9/sv-benchmarks/c/verifythis/tree_max.c[544,557] [2021-10-28 08:48:01,815 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:48:01,835 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 08:48:01,874 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6e7b47-cb5d-4f39-829e-8782559cf0b9/sv-benchmarks/c/verifythis/tree_max.c[544,557] [2021-10-28 08:48:01,885 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:48:01,907 INFO L208 MainTranslator]: Completed translation [2021-10-28 08:48:01,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:48:01 WrapperNode [2021-10-28 08:48:01,908 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 08:48:01,909 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 08:48:01,910 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 08:48:01,910 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 08:48:01,923 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:48:01" (1/1) ... [2021-10-28 08:48:01,923 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:48:01" (1/1) ... [2021-10-28 08:48:01,935 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:48:01" (1/1) ... [2021-10-28 08:48:01,936 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:48:01" (1/1) ... [2021-10-28 08:48:01,962 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:48:01" (1/1) ... [2021-10-28 08:48:01,965 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:48:01" (1/1) ... [2021-10-28 08:48:01,967 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:48:01" (1/1) ... [2021-10-28 08:48:01,972 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 08:48:01,985 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 08:48:01,985 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 08:48:01,985 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 08:48:01,986 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:48:01" (1/1) ... [2021-10-28 08:48:01,995 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 08:48:02,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6e7b47-cb5d-4f39-829e-8782559cf0b9/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:48:02,038 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6e7b47-cb5d-4f39-829e-8782559cf0b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 08:48:02,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6e7b47-cb5d-4f39-829e-8782559cf0b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 08:48:02,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-28 08:48:02,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 08:48:02,092 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-10-28 08:48:02,095 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-10-28 08:48:02,096 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-10-28 08:48:02,096 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_tree [2021-10-28 08:48:02,096 INFO L138 BoogieDeclarations]: Found implementation of procedure max [2021-10-28 08:48:02,096 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2021-10-28 08:48:02,096 INFO L138 BoogieDeclarations]: Found implementation of procedure task [2021-10-28 08:48:02,097 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-28 08:48:02,097 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-28 08:48:02,097 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-28 08:48:02,097 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-28 08:48:02,097 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2021-10-28 08:48:02,097 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-28 08:48:02,098 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-10-28 08:48:02,098 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-10-28 08:48:02,098 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-10-28 08:48:02,098 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 08:48:02,098 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-10-28 08:48:02,099 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_tree [2021-10-28 08:48:02,099 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-28 08:48:02,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-28 08:48:02,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-28 08:48:02,100 INFO L130 BoogieDeclarations]: Found specification of procedure max [2021-10-28 08:48:02,100 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-28 08:48:02,100 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-28 08:48:02,100 INFO L130 BoogieDeclarations]: Found specification of procedure check [2021-10-28 08:48:02,100 INFO L130 BoogieDeclarations]: Found specification of procedure task [2021-10-28 08:48:02,101 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-28 08:48:02,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-28 08:48:02,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-28 08:48:02,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 08:48:02,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-10-28 08:48:02,102 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-10-28 08:48:02,102 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 08:48:02,736 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 08:48:02,744 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-10-28 08:48:02,748 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:48:02 BoogieIcfgContainer [2021-10-28 08:48:02,748 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 08:48:02,751 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 08:48:02,752 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 08:48:02,755 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 08:48:02,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 08:48:01" (1/3) ... [2021-10-28 08:48:02,757 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7894350d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:48:02, skipping insertion in model container [2021-10-28 08:48:02,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:48:01" (2/3) ... [2021-10-28 08:48:02,758 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7894350d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:48:02, skipping insertion in model container [2021-10-28 08:48:02,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:48:02" (3/3) ... [2021-10-28 08:48:02,760 INFO L111 eAbstractionObserver]: Analyzing ICFG tree_max.c [2021-10-28 08:48:02,767 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 08:48:02,767 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2021-10-28 08:48:02,839 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 08:48:02,851 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 [2021-10-28 08:48:02,851 INFO L340 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2021-10-28 08:48:02,873 INFO L276 IsEmpty]: Start isEmpty. Operand has 82 states, 41 states have (on average 1.6585365853658536) internal successors, (68), 61 states have internal predecessors, (68), 13 states have call successors, (13), 7 states have call predecessors, (13), 7 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-10-28 08:48:02,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-28 08:48:02,902 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:48:02,903 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:48:02,904 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting nondet_treeErr0REQUIRES_VIOLATION === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, nondet_treeErr0REQUIRES_VIOLATION, nondet_treeErr1REQUIRES_VIOLATION, nondet_treeErr2REQUIRES_VIOLATION (and 16 more)] === [2021-10-28 08:48:02,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:48:02,921 INFO L85 PathProgramCache]: Analyzing trace with hash -21695061, now seen corresponding path program 1 times [2021-10-28 08:48:02,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 08:48:02,936 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [295963319] [2021-10-28 08:48:02,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:48:02,938 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 08:48:02,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6e7b47-cb5d-4f39-829e-8782559cf0b9/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 08:48:02,943 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6e7b47-cb5d-4f39-829e-8782559cf0b9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 08:48:02,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6e7b47-cb5d-4f39-829e-8782559cf0b9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-28 08:48:03,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:48:03,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 08:48:03,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:48:03,208 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 [2021-10-28 08:48:03,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:48:03,223 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 08:48:03,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:48:03,301 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 08:48:03,301 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [295963319] [2021-10-28 08:48:03,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [295963319] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 08:48:03,302 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:48:03,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-28 08:48:03,304 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535712959] [2021-10-28 08:48:03,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 08:48:03,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 08:48:03,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 08:48:03,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:48:03,331 INFO L87 Difference]: Start difference. First operand has 82 states, 41 states have (on average 1.6585365853658536) internal successors, (68), 61 states have internal predecessors, (68), 13 states have call successors, (13), 7 states have call predecessors, (13), 7 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:48:03,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:48:03,506 INFO L93 Difference]: Finished difference Result 83 states and 96 transitions. [2021-10-28 08:48:03,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 08:48:03,509 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 8 [2021-10-28 08:48:03,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:48:03,519 INFO L225 Difference]: With dead ends: 83 [2021-10-28 08:48:03,532 INFO L226 Difference]: Without dead ends: 80 [2021-10-28 08:48:03,534 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:48:03,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-10-28 08:48:03,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 78. [2021-10-28 08:48:03,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 40 states have (on average 1.6) internal successors, (64), 58 states have internal predecessors, (64), 13 states have call successors, (13), 7 states have call predecessors, (13), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-10-28 08:48:03,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 89 transitions. [2021-10-28 08:48:03,603 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 89 transitions. Word has length 8 [2021-10-28 08:48:03,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:48:03,604 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 89 transitions. [2021-10-28 08:48:03,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:48:03,604 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 89 transitions. [2021-10-28 08:48:03,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-28 08:48:03,606 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:48:03,606 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:48:03,621 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6e7b47-cb5d-4f39-829e-8782559cf0b9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-28 08:48:03,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6e7b47-cb5d-4f39-829e-8782559cf0b9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 08:48:03,822 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting nondet_treeErr1REQUIRES_VIOLATION === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, nondet_treeErr0REQUIRES_VIOLATION, nondet_treeErr1REQUIRES_VIOLATION, nondet_treeErr2REQUIRES_VIOLATION (and 16 more)] === [2021-10-28 08:48:03,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:48:03,828 INFO L85 PathProgramCache]: Analyzing trace with hash -21695060, now seen corresponding path program 1 times [2021-10-28 08:48:03,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 08:48:03,833 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1213150138] [2021-10-28 08:48:03,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:48:03,836 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 08:48:03,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6e7b47-cb5d-4f39-829e-8782559cf0b9/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 08:48:03,838 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6e7b47-cb5d-4f39-829e-8782559cf0b9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 08:48:03,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6e7b47-cb5d-4f39-829e-8782559cf0b9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-28 08:48:03,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:48:03,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-28 08:48:03,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:48:04,040 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 [2021-10-28 08:48:04,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:48:04,057 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 08:48:04,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:48:04,174 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 08:48:04,174 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1213150138] [2021-10-28 08:48:04,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1213150138] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 08:48:04,175 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:48:04,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-28 08:48:04,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636007074] [2021-10-28 08:48:04,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 08:48:04,177 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 08:48:04,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 08:48:04,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 08:48:04,178 INFO L87 Difference]: Start difference. First operand 78 states and 89 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:48:04,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:48:04,454 INFO L93 Difference]: Finished difference Result 77 states and 88 transitions. [2021-10-28 08:48:04,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 08:48:04,458 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 8 [2021-10-28 08:48:04,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:48:04,460 INFO L225 Difference]: With dead ends: 77 [2021-10-28 08:48:04,460 INFO L226 Difference]: Without dead ends: 77 [2021-10-28 08:48:04,461 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 08:48:04,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-10-28 08:48:04,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2021-10-28 08:48:04,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 40 states have (on average 1.575) internal successors, (63), 57 states have internal predecessors, (63), 13 states have call successors, (13), 7 states have call predecessors, (13), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-10-28 08:48:04,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 88 transitions. [2021-10-28 08:48:04,494 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 88 transitions. Word has length 8 [2021-10-28 08:48:04,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:48:04,495 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 88 transitions. [2021-10-28 08:48:04,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:48:04,495 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 88 transitions. [2021-10-28 08:48:04,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-28 08:48:04,497 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:48:04,498 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:48:04,518 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6e7b47-cb5d-4f39-829e-8782559cf0b9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-28 08:48:04,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6e7b47-cb5d-4f39-829e-8782559cf0b9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 08:48:04,711 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting maxErr0REQUIRES_VIOLATION === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, nondet_treeErr0REQUIRES_VIOLATION, nondet_treeErr1REQUIRES_VIOLATION, nondet_treeErr2REQUIRES_VIOLATION (and 16 more)] === [2021-10-28 08:48:04,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:48:04,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1329093118, now seen corresponding path program 1 times [2021-10-28 08:48:04,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 08:48:04,712 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [813552683] [2021-10-28 08:48:04,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:48:04,712 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 08:48:04,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6e7b47-cb5d-4f39-829e-8782559cf0b9/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 08:48:04,713 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6e7b47-cb5d-4f39-829e-8782559cf0b9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 08:48:04,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6e7b47-cb5d-4f39-829e-8782559cf0b9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-28 08:48:04,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:48:04,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-28 08:48:04,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:48:05,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:48:05,004 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 08:48:05,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:48:05,181 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 08:48:05,181 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [813552683] [2021-10-28 08:48:05,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [813552683] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 08:48:05,182 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:48:05,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 8 [2021-10-28 08:48:05,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216833294] [2021-10-28 08:48:05,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 08:48:05,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 08:48:05,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 08:48:05,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-10-28 08:48:05,184 INFO L87 Difference]: Start difference. First operand 77 states and 88 transitions. Second operand has 8 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 08:48:05,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:48:05,331 INFO L93 Difference]: Finished difference Result 93 states and 109 transitions. [2021-10-28 08:48:05,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 08:48:05,332 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 15 [2021-10-28 08:48:05,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:48:05,334 INFO L225 Difference]: With dead ends: 93 [2021-10-28 08:48:05,334 INFO L226 Difference]: Without dead ends: 93 [2021-10-28 08:48:05,335 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-28 08:48:05,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-10-28 08:48:05,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 90. [2021-10-28 08:48:05,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 47 states have (on average 1.4893617021276595) internal successors, (70), 65 states have internal predecessors, (70), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (18), 15 states have call predecessors, (18), 15 states have call successors, (18) [2021-10-28 08:48:05,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 104 transitions. [2021-10-28 08:48:05,349 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 104 transitions. Word has length 15 [2021-10-28 08:48:05,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:48:05,350 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 104 transitions. [2021-10-28 08:48:05,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 08:48:05,350 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 104 transitions. [2021-10-28 08:48:05,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-28 08:48:05,351 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:48:05,351 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:48:05,374 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6e7b47-cb5d-4f39-829e-8782559cf0b9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-28 08:48:05,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6e7b47-cb5d-4f39-829e-8782559cf0b9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 08:48:05,574 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting nondet_treeErr2REQUIRES_VIOLATION === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, nondet_treeErr0REQUIRES_VIOLATION, nondet_treeErr1REQUIRES_VIOLATION, nondet_treeErr2REQUIRES_VIOLATION (and 16 more)] === [2021-10-28 08:48:05,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:48:05,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1115064036, now seen corresponding path program 1 times [2021-10-28 08:48:05,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 08:48:05,576 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1857552519] [2021-10-28 08:48:05,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:48:05,576 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 08:48:05,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6e7b47-cb5d-4f39-829e-8782559cf0b9/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 08:48:05,577 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6e7b47-cb5d-4f39-829e-8782559cf0b9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 08:48:05,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6e7b47-cb5d-4f39-829e-8782559cf0b9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-28 08:48:05,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:48:05,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 08:48:05,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:48:05,715 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 [2021-10-28 08:48:05,797 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:48:05,797 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 08:48:05,976 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:48:05,976 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 08:48:05,977 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1857552519] [2021-10-28 08:48:05,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1857552519] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 08:48:05,977 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:48:05,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-28 08:48:05,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613000801] [2021-10-28 08:48:05,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 08:48:05,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 08:48:05,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 08:48:05,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-28 08:48:05,981 INFO L87 Difference]: Start difference. First operand 90 states and 104 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-28 08:48:06,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:48:06,380 INFO L93 Difference]: Finished difference Result 90 states and 103 transitions. [2021-10-28 08:48:06,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 08:48:06,385 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 14 [2021-10-28 08:48:06,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:48:06,386 INFO L225 Difference]: With dead ends: 90 [2021-10-28 08:48:06,386 INFO L226 Difference]: Without dead ends: 86 [2021-10-28 08:48:06,387 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-28 08:48:06,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-10-28 08:48:06,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2021-10-28 08:48:06,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 46 states have (on average 1.4565217391304348) internal successors, (67), 62 states have internal predecessors, (67), 16 states have call successors, (16), 9 states have call predecessors, (16), 8 states have return successors, (16), 14 states have call predecessors, (16), 13 states have call successors, (16) [2021-10-28 08:48:06,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 99 transitions. [2021-10-28 08:48:06,407 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 99 transitions. Word has length 14 [2021-10-28 08:48:06,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:48:06,408 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 99 transitions. [2021-10-28 08:48:06,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-28 08:48:06,412 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 99 transitions. [2021-10-28 08:48:06,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-28 08:48:06,413 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:48:06,414 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:48:06,430 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6e7b47-cb5d-4f39-829e-8782559cf0b9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-28 08:48:06,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6e7b47-cb5d-4f39-829e-8782559cf0b9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 08:48:06,626 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting nondet_treeErr3REQUIRES_VIOLATION === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, nondet_treeErr0REQUIRES_VIOLATION, nondet_treeErr1REQUIRES_VIOLATION, nondet_treeErr2REQUIRES_VIOLATION (and 16 more)] === [2021-10-28 08:48:06,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:48:06,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1115064035, now seen corresponding path program 1 times [2021-10-28 08:48:06,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 08:48:06,628 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1058364143] [2021-10-28 08:48:06,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:48:06,629 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 08:48:06,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6e7b47-cb5d-4f39-829e-8782559cf0b9/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 08:48:06,630 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6e7b47-cb5d-4f39-829e-8782559cf0b9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 08:48:06,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6e7b47-cb5d-4f39-829e-8782559cf0b9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-28 08:48:06,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:48:06,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 08:48:06,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:48:06,774 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 [2021-10-28 08:48:06,848 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:48:06,849 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 08:48:07,263 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:48:07,263 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 08:48:07,263 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1058364143] [2021-10-28 08:48:07,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1058364143] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 08:48:07,264 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:48:07,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-28 08:48:07,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126242063] [2021-10-28 08:48:07,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 08:48:07,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 08:48:07,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 08:48:07,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-28 08:48:07,266 INFO L87 Difference]: Start difference. First operand 86 states and 99 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-28 08:48:08,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:48:08,030 INFO L93 Difference]: Finished difference Result 98 states and 119 transitions. [2021-10-28 08:48:08,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 08:48:08,032 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 14 [2021-10-28 08:48:08,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:48:08,033 INFO L225 Difference]: With dead ends: 98 [2021-10-28 08:48:08,034 INFO L226 Difference]: Without dead ends: 98 [2021-10-28 08:48:08,034 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-28 08:48:08,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-10-28 08:48:08,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 90. [2021-10-28 08:48:08,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 49 states have (on average 1.4285714285714286) internal successors, (70), 64 states have internal predecessors, (70), 17 states have call successors, (17), 9 states have call predecessors, (17), 8 states have return successors, (18), 16 states have call predecessors, (18), 14 states have call successors, (18) [2021-10-28 08:48:08,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 105 transitions. [2021-10-28 08:48:08,046 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 105 transitions. Word has length 14 [2021-10-28 08:48:08,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:48:08,047 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 105 transitions. [2021-10-28 08:48:08,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-28 08:48:08,047 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 105 transitions. [2021-10-28 08:48:08,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-28 08:48:08,048 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:48:08,048 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:48:08,067 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6e7b47-cb5d-4f39-829e-8782559cf0b9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-28 08:48:08,264 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6e7b47-cb5d-4f39-829e-8782559cf0b9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 08:48:08,265 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting checkErr0REQUIRES_VIOLATION === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, nondet_treeErr0REQUIRES_VIOLATION, nondet_treeErr1REQUIRES_VIOLATION, nondet_treeErr2REQUIRES_VIOLATION (and 16 more)] === [2021-10-28 08:48:08,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:48:08,265 INFO L85 PathProgramCache]: Analyzing trace with hash 1586448910, now seen corresponding path program 1 times [2021-10-28 08:48:08,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 08:48:08,266 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1584167602] [2021-10-28 08:48:08,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:48:08,266 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 08:48:08,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6e7b47-cb5d-4f39-829e-8782559cf0b9/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 08:48:08,268 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6e7b47-cb5d-4f39-829e-8782559cf0b9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 08:48:08,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6e7b47-cb5d-4f39-829e-8782559cf0b9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-28 08:48:08,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:48:08,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-28 08:48:08,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:48:08,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:48:08,604 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 08:48:08,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:48:08,755 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 08:48:08,756 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1584167602] [2021-10-28 08:48:08,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1584167602] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 08:48:08,756 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:48:08,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 8 [2021-10-28 08:48:08,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364691203] [2021-10-28 08:48:08,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 08:48:08,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 08:48:08,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 08:48:08,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-10-28 08:48:08,758 INFO L87 Difference]: Start difference. First operand 90 states and 105 transitions. Second operand has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 5 states have internal predecessors, (12), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-28 08:48:08,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:48:08,874 INFO L93 Difference]: Finished difference Result 96 states and 112 transitions. [2021-10-28 08:48:08,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 08:48:08,875 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 5 states have internal predecessors, (12), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 21 [2021-10-28 08:48:08,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:48:08,877 INFO L225 Difference]: With dead ends: 96 [2021-10-28 08:48:08,877 INFO L226 Difference]: Without dead ends: 83 [2021-10-28 08:48:08,877 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-28 08:48:08,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-10-28 08:48:08,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 81. [2021-10-28 08:48:08,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 44 states have (on average 1.4772727272727273) internal successors, (65), 59 states have internal predecessors, (65), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (16), 14 states have call predecessors, (16), 13 states have call successors, (16) [2021-10-28 08:48:08,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 95 transitions. [2021-10-28 08:48:08,887 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 95 transitions. Word has length 21 [2021-10-28 08:48:08,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:48:08,887 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 95 transitions. [2021-10-28 08:48:08,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 5 states have internal predecessors, (12), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-28 08:48:08,888 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 95 transitions. [2021-10-28 08:48:08,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-28 08:48:08,889 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:48:08,889 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:48:08,905 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6e7b47-cb5d-4f39-829e-8782559cf0b9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-28 08:48:09,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6e7b47-cb5d-4f39-829e-8782559cf0b9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 08:48:09,102 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting nondet_treeErr3REQUIRES_VIOLATION === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, nondet_treeErr0REQUIRES_VIOLATION, nondet_treeErr1REQUIRES_VIOLATION, nondet_treeErr2REQUIRES_VIOLATION (and 16 more)] === [2021-10-28 08:48:09,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:48:09,103 INFO L85 PathProgramCache]: Analyzing trace with hash -885339599, now seen corresponding path program 1 times [2021-10-28 08:48:09,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 08:48:09,119 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1502259849] [2021-10-28 08:48:09,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:48:09,120 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 08:48:09,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6e7b47-cb5d-4f39-829e-8782559cf0b9/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 08:48:09,121 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6e7b47-cb5d-4f39-829e-8782559cf0b9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 08:48:09,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6e7b47-cb5d-4f39-829e-8782559cf0b9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-28 08:48:09,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:48:09,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-28 08:48:09,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:48:09,407 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 [2021-10-28 08:48:09,414 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 [2021-10-28 08:48:09,788 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-28 08:48:09,789 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 31 [2021-10-28 08:48:09,810 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-28 08:48:09,811 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 28 [2021-10-28 08:48:09,876 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-28 08:48:09,876 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 08:48:27,785 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-28 08:48:27,786 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 124 treesize of output 128 [2021-10-28 08:48:27,837 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-28 08:48:27,838 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 128 treesize of output 132 [2021-10-28 08:48:42,683 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-28 08:48:42,686 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 118 treesize of output 122 [2021-10-28 08:48:42,713 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-28 08:48:42,714 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 122 treesize of output 126 [2021-10-28 08:49:05,437 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_nondet_tree_~n~0.offset_BEFORE_CALL_4 (_ BitVec 32)) (v_nondet_tree_~n~0.base_20 (_ BitVec 32)) (v_nondet_tree_~n~0.base_BEFORE_CALL_6 (_ BitVec 32))) (or (let ((.cse0 (bvadd (_ bv8 32) v_nondet_tree_~n~0.offset_BEFORE_CALL_4))) (and (bvule .cse0 (select (store |c_#length| v_nondet_tree_~n~0.base_20 (_ bv12 32)) v_nondet_tree_~n~0.base_BEFORE_CALL_6)) (bvule (bvadd (_ bv4 32) v_nondet_tree_~n~0.offset_BEFORE_CALL_4) .cse0))) (not (= (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| v_nondet_tree_~n~0.base_20)))))) (_ bv0 1))) (exists ((v_nondet_tree_~n~0.base_19 (_ BitVec 32))) (and (let ((.cse1 (bvadd (_ bv8 32) v_nondet_tree_~n~0.offset_BEFORE_CALL_4))) (or (not (bvule (bvadd (_ bv4 32) v_nondet_tree_~n~0.offset_BEFORE_CALL_4) .cse1)) (not (bvule .cse1 (select (store |c_old(#length)| v_nondet_tree_~n~0.base_19 (_ bv12 32)) v_nondet_tree_~n~0.base_BEFORE_CALL_6))))) (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (select |c_old(#valid)| v_nondet_tree_~n~0.base_19)))))))))) is different from false [2021-10-28 08:49:05,599 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 5 refuted. 3 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-28 08:49:05,599 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 08:49:05,599 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1502259849] [2021-10-28 08:49:05,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1502259849] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-28 08:49:05,600 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 08:49:05,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2021-10-28 08:49:05,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804644045] [2021-10-28 08:49:05,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-28 08:49:05,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 08:49:05,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 08:49:05,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=62, Unknown=7, NotChecked=16, Total=110 [2021-10-28 08:49:05,603 INFO L87 Difference]: Start difference. First operand 81 states and 95 transitions. Second operand has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 7 states have internal predecessors, (30), 5 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2021-10-28 08:49:15,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:49:15,839 INFO L93 Difference]: Finished difference Result 12 states and 11 transitions. [2021-10-28 08:49:15,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 08:49:15,841 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 7 states have internal predecessors, (30), 5 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) Word has length 28 [2021-10-28 08:49:15,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:49:15,842 INFO L225 Difference]: With dead ends: 12 [2021-10-28 08:49:15,842 INFO L226 Difference]: Without dead ends: 0 [2021-10-28 08:49:15,842 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 17.7s TimeCoverageRelationStatistics Valid=32, Invalid=75, Unknown=7, NotChecked=18, Total=132 [2021-10-28 08:49:15,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-28 08:49:15,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-28 08:49:15,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:49:15,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-28 08:49:15,843 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 28 [2021-10-28 08:49:15,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:49:15,843 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 08:49:15,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 7 states have internal predecessors, (30), 5 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2021-10-28 08:49:15,843 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-28 08:49:15,844 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-28 08:49:15,846 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr0ENSURES_VIOLATIONMEMORY_LEAK [2021-10-28 08:49:15,846 INFO L764 garLoopResultBuilder]: Registering result SAFE for location nondet_treeErr0REQUIRES_VIOLATION [2021-10-28 08:49:15,847 INFO L764 garLoopResultBuilder]: Registering result SAFE for location nondet_treeErr1REQUIRES_VIOLATION [2021-10-28 08:49:15,847 INFO L764 garLoopResultBuilder]: Registering result SAFE for location nondet_treeErr2REQUIRES_VIOLATION [2021-10-28 08:49:15,847 INFO L764 garLoopResultBuilder]: Registering result SAFE for location nondet_treeErr3REQUIRES_VIOLATION [2021-10-28 08:49:15,847 INFO L764 garLoopResultBuilder]: Registering result SAFE for location nondet_treeErr4REQUIRES_VIOLATION [2021-10-28 08:49:15,847 INFO L764 garLoopResultBuilder]: Registering result SAFE for location nondet_treeErr5REQUIRES_VIOLATION [2021-10-28 08:49:15,847 INFO L764 garLoopResultBuilder]: Registering result SAFE for location maxErr0REQUIRES_VIOLATION [2021-10-28 08:49:15,848 INFO L764 garLoopResultBuilder]: Registering result SAFE for location maxErr1REQUIRES_VIOLATION [2021-10-28 08:49:15,848 INFO L764 garLoopResultBuilder]: Registering result SAFE for location maxErr2REQUIRES_VIOLATION [2021-10-28 08:49:15,848 INFO L764 garLoopResultBuilder]: Registering result SAFE for location maxErr3REQUIRES_VIOLATION [2021-10-28 08:49:15,848 INFO L764 garLoopResultBuilder]: Registering result SAFE for location maxErr4REQUIRES_VIOLATION [2021-10-28 08:49:15,848 INFO L764 garLoopResultBuilder]: Registering result SAFE for location maxErr5REQUIRES_VIOLATION [2021-10-28 08:49:15,849 INFO L764 garLoopResultBuilder]: Registering result SAFE for location checkErr0REQUIRES_VIOLATION [2021-10-28 08:49:15,849 INFO L764 garLoopResultBuilder]: Registering result SAFE for location checkErr1REQUIRES_VIOLATION [2021-10-28 08:49:15,849 INFO L764 garLoopResultBuilder]: Registering result SAFE for location checkErr2REQUIRES_VIOLATION [2021-10-28 08:49:15,849 INFO L764 garLoopResultBuilder]: Registering result SAFE for location checkErr3REQUIRES_VIOLATION [2021-10-28 08:49:15,849 INFO L764 garLoopResultBuilder]: Registering result SAFE for location checkErr4REQUIRES_VIOLATION [2021-10-28 08:49:15,849 INFO L764 garLoopResultBuilder]: Registering result SAFE for location checkErr5REQUIRES_VIOLATION [2021-10-28 08:49:15,849 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK [2021-10-28 08:49:15,860 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6e7b47-cb5d-4f39-829e-8782559cf0b9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-28 08:49:16,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6e7b47-cb5d-4f39-829e-8782559cf0b9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 08:49:16,056 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:49:16,058 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 08:49:16,061 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 08:49:16 BoogieIcfgContainer [2021-10-28 08:49:16,061 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 08:49:16,062 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 08:49:16,062 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 08:49:16,062 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 08:49:16,063 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:48:02" (3/4) ... [2021-10-28 08:49:16,066 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-28 08:49:16,074 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure reach_error [2021-10-28 08:49:16,074 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2021-10-28 08:49:16,075 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure task [2021-10-28 08:49:16,075 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure nondet_tree [2021-10-28 08:49:16,075 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure max [2021-10-28 08:49:16,075 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2021-10-28 08:49:16,076 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2021-10-28 08:49:16,076 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2021-10-28 08:49:16,076 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure check [2021-10-28 08:49:16,082 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2021-10-28 08:49:16,083 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-10-28 08:49:16,083 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-28 08:49:16,084 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 08:49:16,129 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6e7b47-cb5d-4f39-829e-8782559cf0b9/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 08:49:16,129 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 08:49:16,130 INFO L168 Benchmark]: Toolchain (without parser) took 74603.00 ms. Allocated memory was 58.7 MB in the beginning and 92.3 MB in the end (delta: 33.6 MB). Free memory was 35.6 MB in the beginning and 52.4 MB in the end (delta: -16.8 MB). Peak memory consumption was 16.5 MB. Max. memory is 16.1 GB. [2021-10-28 08:49:16,131 INFO L168 Benchmark]: CDTParser took 2.43 ms. Allocated memory is still 58.7 MB. Free memory is still 38.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:49:16,132 INFO L168 Benchmark]: CACSL2BoogieTranslator took 379.87 ms. Allocated memory is still 58.7 MB. Free memory was 35.4 MB in the beginning and 40.0 MB in the end (delta: -4.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-28 08:49:16,132 INFO L168 Benchmark]: Boogie Preprocessor took 74.72 ms. Allocated memory is still 58.7 MB. Free memory was 40.0 MB in the beginning and 38.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 08:49:16,133 INFO L168 Benchmark]: RCFGBuilder took 763.30 ms. Allocated memory was 58.7 MB in the beginning and 75.5 MB in the end (delta: 16.8 MB). Free memory was 37.8 MB in the beginning and 53.0 MB in the end (delta: -15.2 MB). Peak memory consumption was 16.4 MB. Max. memory is 16.1 GB. [2021-10-28 08:49:16,133 INFO L168 Benchmark]: TraceAbstraction took 73309.77 ms. Allocated memory was 75.5 MB in the beginning and 92.3 MB in the end (delta: 16.8 MB). Free memory was 52.7 MB in the beginning and 56.5 MB in the end (delta: -3.8 MB). Peak memory consumption was 13.9 MB. Max. memory is 16.1 GB. [2021-10-28 08:49:16,134 INFO L168 Benchmark]: Witness Printer took 67.72 ms. Allocated memory is still 92.3 MB. Free memory was 56.5 MB in the beginning and 52.4 MB in the end (delta: 4.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 08:49:16,136 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 2.43 ms. Allocated memory is still 58.7 MB. Free memory is still 38.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 379.87 ms. Allocated memory is still 58.7 MB. Free memory was 35.4 MB in the beginning and 40.0 MB in the end (delta: -4.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 74.72 ms. Allocated memory is still 58.7 MB. Free memory was 40.0 MB in the beginning and 38.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 763.30 ms. Allocated memory was 58.7 MB in the beginning and 75.5 MB in the end (delta: 16.8 MB). Free memory was 37.8 MB in the beginning and 53.0 MB in the end (delta: -15.2 MB). Peak memory consumption was 16.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 73309.77 ms. Allocated memory was 75.5 MB in the beginning and 92.3 MB in the end (delta: 16.8 MB). Free memory was 52.7 MB in the beginning and 56.5 MB in the end (delta: -3.8 MB). Peak memory consumption was 13.9 MB. Max. memory is 16.1 GB. * Witness Printer took 67.72 ms. Allocated memory is still 92.3 MB. Free memory was 56.5 MB in the beginning and 52.4 MB in the end (delta: 4.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * 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 - PositiveResult [Line: 65]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 28]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 28]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 29]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 29]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 30]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 30]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 39]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 39]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 40]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 40]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 41]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 41]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 50]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 50]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 53]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 53]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 55]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 55]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 15]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 89 locations, 20 error locations. Started 1 CEGAR loops. OverallTime: 73.2s, OverallIterations: 7, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 12.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 476 SDtfs, 151 SDslu, 1238 SDs, 0 SdLazy, 510 SolverSat, 60 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 11.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 215 GetRequests, 175 SyntacticMatches, 3 SemanticMatches, 37 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 18.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=90occurred in iteration=3, 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, 15 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 58.2s InterpolantComputationTime, 108 NumberOfCodeBlocks, 108 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 202 ConstructedInterpolants, 31 QuantifiedInterpolants, 1542 SizeOfPredicates, 11 NumberOfNonLiveVariables, 694 ConjunctsInSsa, 54 ConjunctsInUnsatCore, 14 InterpolantComputations, 12 PerfectInterpolantSequences, 18/36 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 - AllSpecificationsHoldResult: All specifications hold 20 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-28 08:49:16,172 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf6e7b47-cb5d-4f39-829e-8782559cf0b9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...