./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 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c79e2d-603e-4eae-b2ed-f918067beffe/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c79e2d-603e-4eae-b2ed-f918067beffe/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c79e2d-603e-4eae-b2ed-f918067beffe/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c79e2d-603e-4eae-b2ed-f918067beffe/bin/utaipan-aC7eJsxGYH/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/verifythis/tree_max.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c79e2d-603e-4eae-b2ed-f918067beffe/bin/utaipan-aC7eJsxGYH/config/svcomp-MemCleanup-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c79e2d-603e-4eae-b2ed-f918067beffe/bin/utaipan-aC7eJsxGYH --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e98a60ea9ee0c00575c08606ce8b95d0660c5b235c5932147dfee4b13512f57c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 05:03:58,478 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 05:03:58,480 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 05:03:58,519 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 05:03:58,520 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 05:03:58,522 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 05:03:58,524 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 05:03:58,527 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 05:03:58,529 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 05:03:58,530 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 05:03:58,532 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 05:03:58,534 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 05:03:58,534 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 05:03:58,536 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 05:03:58,538 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 05:03:58,540 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 05:03:58,541 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 05:03:58,543 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 05:03:58,546 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 05:03:58,549 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 05:03:58,551 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 05:03:58,562 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 05:03:58,563 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 05:03:58,565 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 05:03:58,569 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 05:03:58,570 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 05:03:58,570 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 05:03:58,571 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 05:03:58,572 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 05:03:58,582 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 05:03:58,583 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 05:03:58,584 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 05:03:58,587 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 05:03:58,588 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 05:03:58,590 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 05:03:58,591 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 05:03:58,592 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 05:03:58,592 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 05:03:58,592 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 05:03:58,594 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 05:03:58,595 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 05:03:58,596 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c79e2d-603e-4eae-b2ed-f918067beffe/bin/utaipan-aC7eJsxGYH/config/svcomp-MemCleanup-32bit-Taipan_Default.epf [2021-11-03 05:03:58,632 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 05:03:58,633 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 05:03:58,634 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 05:03:58,634 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 05:03:58,634 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 05:03:58,634 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 05:03:58,635 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 05:03:58,635 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 05:03:58,635 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 05:03:58,635 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 05:03:58,636 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 05:03:58,636 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 05:03:58,636 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 05:03:58,637 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 05:03:58,637 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 05:03:58,638 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-03 05:03:58,638 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-03 05:03:58,638 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 05:03:58,639 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 05:03:58,639 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-03 05:03:58,639 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 05:03:58,639 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 05:03:58,640 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 05:03:58,640 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-03 05:03:58,640 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-03 05:03:58,640 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 05:03:58,641 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 05:03:58,641 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 05:03:58,641 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 05:03:58,641 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 05:03:58,642 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 05:03:58,642 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:03:58,642 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 05:03:58,643 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 05:03:58,643 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 05:03:58,643 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 05:03:58,643 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 05:03:58,644 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 05:03:58,644 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_90c79e2d-603e-4eae-b2ed-f918067beffe/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c79e2d-603e-4eae-b2ed-f918067beffe/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e98a60ea9ee0c00575c08606ce8b95d0660c5b235c5932147dfee4b13512f57c [2021-11-03 05:03:58,928 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 05:03:58,966 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 05:03:58,969 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 05:03:58,971 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 05:03:58,972 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 05:03:58,974 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c79e2d-603e-4eae-b2ed-f918067beffe/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/verifythis/tree_max.c [2021-11-03 05:03:59,081 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c79e2d-603e-4eae-b2ed-f918067beffe/bin/utaipan-aC7eJsxGYH/data/5bdc2e253/a4204e03be454d348b43d10dd05da754/FLAG00f3159a4 [2021-11-03 05:03:59,646 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 05:03:59,647 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c79e2d-603e-4eae-b2ed-f918067beffe/sv-benchmarks/c/verifythis/tree_max.c [2021-11-03 05:03:59,656 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c79e2d-603e-4eae-b2ed-f918067beffe/bin/utaipan-aC7eJsxGYH/data/5bdc2e253/a4204e03be454d348b43d10dd05da754/FLAG00f3159a4 [2021-11-03 05:03:59,979 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c79e2d-603e-4eae-b2ed-f918067beffe/bin/utaipan-aC7eJsxGYH/data/5bdc2e253/a4204e03be454d348b43d10dd05da754 [2021-11-03 05:03:59,982 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 05:03:59,990 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 05:03:59,992 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 05:03:59,992 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 05:03:59,996 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 05:03:59,996 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:03:59" (1/1) ... [2021-11-03 05:03:59,998 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62820e1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:03:59, skipping insertion in model container [2021-11-03 05:03:59,998 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:03:59" (1/1) ... [2021-11-03 05:04:00,006 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 05:04:00,021 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:04:00,232 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_90c79e2d-603e-4eae-b2ed-f918067beffe/sv-benchmarks/c/verifythis/tree_max.c[544,557] [2021-11-03 05:04:00,277 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:04:00,304 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) [2021-11-03 05:04:00,305 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@ef10691 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:04:00, skipping insertion in model container [2021-11-03 05:04:00,305 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 05:04:00,306 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-03 05:04:00,309 INFO L168 Benchmark]: Toolchain (without parser) took 317.09 ms. Allocated memory is still 121.6 MB. Free memory was 88.7 MB in the beginning and 98.8 MB in the end (delta: -10.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-03 05:04:00,312 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 88.1 MB. Free memory is still 41.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 05:04:00,315 INFO L168 Benchmark]: CACSL2BoogieTranslator took 313.93 ms. Allocated memory is still 121.6 MB. Free memory was 88.4 MB in the beginning and 98.8 MB in the end (delta: -10.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-03 05:04:00,318 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 88.1 MB. Free memory is still 41.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 313.93 ms. Allocated memory is still 121.6 MB. Free memory was 88.4 MB in the beginning and 98.8 MB in the end (delta: -10.4 MB). Peak memory consumption was 8.4 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... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c79e2d-603e-4eae-b2ed-f918067beffe/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c79e2d-603e-4eae-b2ed-f918067beffe/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c79e2d-603e-4eae-b2ed-f918067beffe/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c79e2d-603e-4eae-b2ed-f918067beffe/bin/utaipan-aC7eJsxGYH/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/verifythis/tree_max.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c79e2d-603e-4eae-b2ed-f918067beffe/bin/utaipan-aC7eJsxGYH/config/svcomp-MemCleanup-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c79e2d-603e-4eae-b2ed-f918067beffe/bin/utaipan-aC7eJsxGYH --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e98a60ea9ee0c00575c08606ce8b95d0660c5b235c5932147dfee4b13512f57c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 05:04:03,115 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 05:04:03,117 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 05:04:03,172 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 05:04:03,173 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 05:04:03,180 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 05:04:03,182 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 05:04:03,187 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 05:04:03,191 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 05:04:03,199 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 05:04:03,200 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 05:04:03,201 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 05:04:03,201 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 05:04:03,202 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 05:04:03,203 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 05:04:03,204 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 05:04:03,205 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 05:04:03,206 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 05:04:03,209 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 05:04:03,212 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 05:04:03,214 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 05:04:03,216 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 05:04:03,218 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 05:04:03,219 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 05:04:03,223 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 05:04:03,223 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 05:04:03,224 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 05:04:03,225 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 05:04:03,226 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 05:04:03,227 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 05:04:03,228 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 05:04:03,229 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 05:04:03,230 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 05:04:03,231 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 05:04:03,233 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 05:04:03,233 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 05:04:03,234 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 05:04:03,235 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 05:04:03,236 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 05:04:03,237 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 05:04:03,238 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 05:04:03,239 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c79e2d-603e-4eae-b2ed-f918067beffe/bin/utaipan-aC7eJsxGYH/config/svcomp-MemCleanup-32bit-Taipan_Bitvector.epf [2021-11-03 05:04:03,280 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 05:04:03,285 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 05:04:03,286 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 05:04:03,287 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 05:04:03,287 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 05:04:03,287 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 05:04:03,288 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 05:04:03,288 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 05:04:03,288 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 05:04:03,290 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-03 05:04:03,291 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-03 05:04:03,291 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 05:04:03,292 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 05:04:03,292 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-03 05:04:03,292 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 05:04:03,293 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 05:04:03,293 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 05:04:03,293 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-03 05:04:03,293 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-03 05:04:03,294 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 05:04:03,294 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 05:04:03,294 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 05:04:03,294 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 05:04:03,295 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 05:04:03,295 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 05:04:03,295 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 05:04:03,296 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 05:04:03,296 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 05:04:03,296 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:04:03,296 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 05:04:03,297 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 05:04:03,297 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 05:04:03,297 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 05:04:03,298 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 05:04:03,298 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 05:04:03,298 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_90c79e2d-603e-4eae-b2ed-f918067beffe/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c79e2d-603e-4eae-b2ed-f918067beffe/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e98a60ea9ee0c00575c08606ce8b95d0660c5b235c5932147dfee4b13512f57c [2021-11-03 05:04:03,743 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 05:04:03,773 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 05:04:03,777 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 05:04:03,778 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 05:04:03,779 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 05:04:03,780 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c79e2d-603e-4eae-b2ed-f918067beffe/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/verifythis/tree_max.c [2021-11-03 05:04:03,858 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c79e2d-603e-4eae-b2ed-f918067beffe/bin/utaipan-aC7eJsxGYH/data/8851fc1a5/b73ee17f5ed24252873caf425f3a6a5a/FLAG9eb6402b7 [2021-11-03 05:04:04,423 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 05:04:04,424 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c79e2d-603e-4eae-b2ed-f918067beffe/sv-benchmarks/c/verifythis/tree_max.c [2021-11-03 05:04:04,436 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c79e2d-603e-4eae-b2ed-f918067beffe/bin/utaipan-aC7eJsxGYH/data/8851fc1a5/b73ee17f5ed24252873caf425f3a6a5a/FLAG9eb6402b7 [2021-11-03 05:04:04,744 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c79e2d-603e-4eae-b2ed-f918067beffe/bin/utaipan-aC7eJsxGYH/data/8851fc1a5/b73ee17f5ed24252873caf425f3a6a5a [2021-11-03 05:04:04,748 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 05:04:04,750 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 05:04:04,752 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 05:04:04,753 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 05:04:04,757 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 05:04:04,758 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:04:04" (1/1) ... [2021-11-03 05:04:04,761 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@327b96db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:04:04, skipping insertion in model container [2021-11-03 05:04:04,761 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:04:04" (1/1) ... [2021-11-03 05:04:04,801 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 05:04:04,825 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:04:05,071 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_90c79e2d-603e-4eae-b2ed-f918067beffe/sv-benchmarks/c/verifythis/tree_max.c[544,557] [2021-11-03 05:04:05,109 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:04:05,138 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-03 05:04:05,152 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:04:05,165 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_90c79e2d-603e-4eae-b2ed-f918067beffe/sv-benchmarks/c/verifythis/tree_max.c[544,557] [2021-11-03 05:04:05,177 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:04:05,185 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 05:04:05,212 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_90c79e2d-603e-4eae-b2ed-f918067beffe/sv-benchmarks/c/verifythis/tree_max.c[544,557] [2021-11-03 05:04:05,234 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:04:05,259 INFO L208 MainTranslator]: Completed translation [2021-11-03 05:04:05,260 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:04:05 WrapperNode [2021-11-03 05:04:05,260 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 05:04:05,261 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 05:04:05,262 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 05:04:05,262 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 05:04:05,270 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:04:05" (1/1) ... [2021-11-03 05:04:05,282 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:04:05" (1/1) ... [2021-11-03 05:04:05,304 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 05:04:05,305 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 05:04:05,305 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 05:04:05,305 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 05:04:05,316 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:04:05" (1/1) ... [2021-11-03 05:04:05,316 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:04:05" (1/1) ... [2021-11-03 05:04:05,322 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:04:05" (1/1) ... [2021-11-03 05:04:05,322 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:04:05" (1/1) ... [2021-11-03 05:04:05,334 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:04:05" (1/1) ... [2021-11-03 05:04:05,337 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:04:05" (1/1) ... [2021-11-03 05:04:05,355 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:04:05" (1/1) ... [2021-11-03 05:04:05,359 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 05:04:05,360 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 05:04:05,360 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 05:04:05,360 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 05:04:05,361 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:04:05" (1/1) ... [2021-11-03 05:04:05,369 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:04:05,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c79e2d-603e-4eae-b2ed-f918067beffe/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:04:05,425 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c79e2d-603e-4eae-b2ed-f918067beffe/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 05:04:05,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c79e2d-603e-4eae-b2ed-f918067beffe/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 05:04:05,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 05:04:05,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 05:04:05,481 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 05:04:05,482 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-03 05:04:05,482 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 05:04:05,482 INFO L130 BoogieDeclarations]: Found specification of procedure max [2021-11-03 05:04:05,482 INFO L138 BoogieDeclarations]: Found implementation of procedure max [2021-11-03 05:04:05,482 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_tree [2021-11-03 05:04:05,482 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_tree [2021-11-03 05:04:05,483 INFO L130 BoogieDeclarations]: Found specification of procedure check [2021-11-03 05:04:05,483 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2021-11-03 05:04:05,483 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 05:04:05,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 05:04:05,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 05:04:05,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-03 05:04:06,102 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 05:04:06,103 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-11-03 05:04:06,105 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:04:06 BoogieIcfgContainer [2021-11-03 05:04:06,105 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 05:04:06,107 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 05:04:06,107 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 05:04:06,111 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 05:04:06,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 05:04:04" (1/3) ... [2021-11-03 05:04:06,112 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1af921da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:04:06, skipping insertion in model container [2021-11-03 05:04:06,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:04:05" (2/3) ... [2021-11-03 05:04:06,113 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1af921da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:04:06, skipping insertion in model container [2021-11-03 05:04:06,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:04:06" (3/3) ... [2021-11-03 05:04:06,114 INFO L111 eAbstractionObserver]: Analyzing ICFG tree_max.c [2021-11-03 05:04:06,120 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 05:04:06,121 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2021-11-03 05:04:06,170 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 05:04:06,176 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 [2021-11-03 05:04:06,177 INFO L340 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2021-11-03 05:04:06,195 INFO L276 IsEmpty]: Start isEmpty. Operand has 72 states, 39 states have (on average 1.6923076923076923) internal successors, (66), 59 states have internal predecessors, (66), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-11-03 05:04:06,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-03 05:04:06,203 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:04:06,204 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-03 05:04:06,204 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting nondet_treeErr0REQUIRES_VIOLATION === [maxErr0REQUIRES_VIOLATION, maxErr1REQUIRES_VIOLATION, maxErr2REQUIRES_VIOLATION, maxErr3REQUIRES_VIOLATION, maxErr4REQUIRES_VIOLATION (and 15 more)] === [2021-11-03 05:04:06,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:04:06,211 INFO L85 PathProgramCache]: Analyzing trace with hash 73597257, now seen corresponding path program 1 times [2021-11-03 05:04:06,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:04:06,225 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1818170711] [2021-11-03 05:04:06,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:04:06,227 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:04:06,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c79e2d-603e-4eae-b2ed-f918067beffe/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:04:06,230 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c79e2d-603e-4eae-b2ed-f918067beffe/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:04:06,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c79e2d-603e-4eae-b2ed-f918067beffe/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 05:04:06,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:04:06,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:04:06,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:04:06,438 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 [2021-11-03 05:04:06,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:04:06,466 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:04:06,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:04:06,509 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:04:06,509 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1818170711] [2021-11-03 05:04:06,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1818170711] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:04:06,510 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:04:06,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 05:04:06,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435504188] [2021-11-03 05:04:06,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:04:06,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:04:06,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:04:06,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:04:06,544 INFO L87 Difference]: Start difference. First operand has 72 states, 39 states have (on average 1.6923076923076923) internal successors, (66), 59 states have internal predecessors, (66), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) 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, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:04:06,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:04:06,755 INFO L93 Difference]: Finished difference Result 73 states and 86 transitions. [2021-11-03 05:04:06,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:04:06,757 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, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-03 05:04:06,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:04:06,771 INFO L225 Difference]: With dead ends: 73 [2021-11-03 05:04:06,772 INFO L226 Difference]: Without dead ends: 71 [2021-11-03 05:04:06,773 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:04:06,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-11-03 05:04:06,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 69. [2021-11-03 05:04:06,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 38 states have (on average 1.631578947368421) internal successors, (62), 56 states have internal predecessors, (62), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-11-03 05:04:06,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 80 transitions. [2021-11-03 05:04:06,840 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 80 transitions. Word has length 5 [2021-11-03 05:04:06,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:04:06,840 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 80 transitions. [2021-11-03 05:04:06,841 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, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:04:06,841 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 80 transitions. [2021-11-03 05:04:06,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-03 05:04:06,842 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:04:06,842 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-03 05:04:06,858 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c79e2d-603e-4eae-b2ed-f918067beffe/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-03 05:04:07,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c79e2d-603e-4eae-b2ed-f918067beffe/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:04:07,058 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting nondet_treeErr1REQUIRES_VIOLATION === [maxErr0REQUIRES_VIOLATION, maxErr1REQUIRES_VIOLATION, maxErr2REQUIRES_VIOLATION, maxErr3REQUIRES_VIOLATION, maxErr4REQUIRES_VIOLATION (and 15 more)] === [2021-11-03 05:04:07,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:04:07,061 INFO L85 PathProgramCache]: Analyzing trace with hash 73597258, now seen corresponding path program 1 times [2021-11-03 05:04:07,067 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:04:07,067 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1766250696] [2021-11-03 05:04:07,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:04:07,069 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:04:07,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c79e2d-603e-4eae-b2ed-f918067beffe/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:04:07,070 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c79e2d-603e-4eae-b2ed-f918067beffe/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:04:07,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c79e2d-603e-4eae-b2ed-f918067beffe/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 05:04:07,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:04:07,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 05:04:07,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:04:07,203 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 [2021-11-03 05:04:07,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:04:07,221 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:04:07,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:04:07,290 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:04:07,290 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1766250696] [2021-11-03 05:04:07,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1766250696] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:04:07,291 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:04:07,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-03 05:04:07,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094768070] [2021-11-03 05:04:07,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:04:07,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:04:07,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:04:07,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:04:07,294 INFO L87 Difference]: Start difference. First operand 69 states and 80 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, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:04:07,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:04:07,526 INFO L93 Difference]: Finished difference Result 68 states and 79 transitions. [2021-11-03 05:04:07,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:04:07,532 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, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-03 05:04:07,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:04:07,534 INFO L225 Difference]: With dead ends: 68 [2021-11-03 05:04:07,534 INFO L226 Difference]: Without dead ends: 68 [2021-11-03 05:04:07,535 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:04:07,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-11-03 05:04:07,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2021-11-03 05:04:07,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 38 states have (on average 1.605263157894737) internal successors, (61), 55 states have internal predecessors, (61), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-11-03 05:04:07,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 79 transitions. [2021-11-03 05:04:07,553 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 79 transitions. Word has length 5 [2021-11-03 05:04:07,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:04:07,554 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 79 transitions. [2021-11-03 05:04:07,554 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, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:04:07,555 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 79 transitions. [2021-11-03 05:04:07,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-03 05:04:07,556 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:04:07,556 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:04:07,570 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c79e2d-603e-4eae-b2ed-f918067beffe/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 05:04:07,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c79e2d-603e-4eae-b2ed-f918067beffe/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:04:07,770 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting maxErr0REQUIRES_VIOLATION === [maxErr0REQUIRES_VIOLATION, maxErr1REQUIRES_VIOLATION, maxErr2REQUIRES_VIOLATION, maxErr3REQUIRES_VIOLATION, maxErr4REQUIRES_VIOLATION (and 15 more)] === [2021-11-03 05:04:07,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:04:07,771 INFO L85 PathProgramCache]: Analyzing trace with hash -345289291, now seen corresponding path program 1 times [2021-11-03 05:04:07,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:04:07,772 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1773375784] [2021-11-03 05:04:07,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:04:07,773 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:04:07,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c79e2d-603e-4eae-b2ed-f918067beffe/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:04:07,775 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c79e2d-603e-4eae-b2ed-f918067beffe/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:04:07,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c79e2d-603e-4eae-b2ed-f918067beffe/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 05:04:07,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:04:07,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-03 05:04:07,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:04:08,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:04:08,128 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:04:08,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:04:08,270 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:04:08,271 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1773375784] [2021-11-03 05:04:08,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1773375784] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:04:08,271 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:04:08,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2021-11-03 05:04:08,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705294369] [2021-11-03 05:04:08,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 05:04:08,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:04:08,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 05:04:08,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-03 05:04:08,287 INFO L87 Difference]: Start difference. First operand 68 states and 79 transitions. Second operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-03 05:04:08,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:04:08,443 INFO L93 Difference]: Finished difference Result 83 states and 98 transitions. [2021-11-03 05:04:08,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 05:04:08,444 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-11-03 05:04:08,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:04:08,448 INFO L225 Difference]: With dead ends: 83 [2021-11-03 05:04:08,449 INFO L226 Difference]: Without dead ends: 83 [2021-11-03 05:04:08,450 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:04:08,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-11-03 05:04:08,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 76. [2021-11-03 05:04:08,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 43 states have (on average 1.5348837209302326) internal successors, (66), 61 states have internal predecessors, (66), 10 states have call successors, (10), 4 states have call predecessors, (10), 5 states have return successors, (13), 10 states have call predecessors, (13), 10 states have call successors, (13) [2021-11-03 05:04:08,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 89 transitions. [2021-11-03 05:04:08,485 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 89 transitions. Word has length 11 [2021-11-03 05:04:08,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:04:08,486 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 89 transitions. [2021-11-03 05:04:08,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-03 05:04:08,490 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 89 transitions. [2021-11-03 05:04:08,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-03 05:04:08,491 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:04:08,491 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:04:08,508 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c79e2d-603e-4eae-b2ed-f918067beffe/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 05:04:08,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c79e2d-603e-4eae-b2ed-f918067beffe/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:04:08,699 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting nondet_treeErr2REQUIRES_VIOLATION === [maxErr0REQUIRES_VIOLATION, maxErr1REQUIRES_VIOLATION, maxErr2REQUIRES_VIOLATION, maxErr3REQUIRES_VIOLATION, maxErr4REQUIRES_VIOLATION (and 15 more)] === [2021-11-03 05:04:08,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:04:08,700 INFO L85 PathProgramCache]: Analyzing trace with hash -159104294, now seen corresponding path program 1 times [2021-11-03 05:04:08,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:04:08,701 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [120401054] [2021-11-03 05:04:08,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:04:08,703 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:04:08,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c79e2d-603e-4eae-b2ed-f918067beffe/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:04:08,705 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c79e2d-603e-4eae-b2ed-f918067beffe/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:04:08,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c79e2d-603e-4eae-b2ed-f918067beffe/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 05:04:08,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:04:08,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 05:04:08,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:04:08,851 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 [2021-11-03 05:04:08,931 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:04:08,931 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:04:09,094 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:04:09,095 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:04:09,095 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [120401054] [2021-11-03 05:04:09,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [120401054] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:04:09,095 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:04:09,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 05:04:09,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093562385] [2021-11-03 05:04:09,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 05:04:09,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:04:09,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 05:04:09,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:04:09,100 INFO L87 Difference]: Start difference. First operand 76 states and 89 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, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-03 05:04:09,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:04:09,512 INFO L93 Difference]: Finished difference Result 74 states and 87 transitions. [2021-11-03 05:04:09,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:04:09,513 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, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 11 [2021-11-03 05:04:09,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:04:09,515 INFO L225 Difference]: With dead ends: 74 [2021-11-03 05:04:09,515 INFO L226 Difference]: Without dead ends: 74 [2021-11-03 05:04:09,515 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-03 05:04:09,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-11-03 05:04:09,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2021-11-03 05:04:09,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 43 states have (on average 1.4883720930232558) internal successors, (64), 59 states have internal predecessors, (64), 10 states have call successors, (10), 4 states have call predecessors, (10), 5 states have return successors, (13), 10 states have call predecessors, (13), 10 states have call successors, (13) [2021-11-03 05:04:09,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 87 transitions. [2021-11-03 05:04:09,539 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 87 transitions. Word has length 11 [2021-11-03 05:04:09,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:04:09,540 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 87 transitions. [2021-11-03 05:04:09,540 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, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-03 05:04:09,541 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 87 transitions. [2021-11-03 05:04:09,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-03 05:04:09,543 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:04:09,543 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:04:09,561 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c79e2d-603e-4eae-b2ed-f918067beffe/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-03 05:04:09,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c79e2d-603e-4eae-b2ed-f918067beffe/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:04:09,757 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting nondet_treeErr3REQUIRES_VIOLATION === [maxErr0REQUIRES_VIOLATION, maxErr1REQUIRES_VIOLATION, maxErr2REQUIRES_VIOLATION, maxErr3REQUIRES_VIOLATION, maxErr4REQUIRES_VIOLATION (and 15 more)] === [2021-11-03 05:04:09,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:04:09,757 INFO L85 PathProgramCache]: Analyzing trace with hash -159104293, now seen corresponding path program 1 times [2021-11-03 05:04:09,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:04:09,758 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [356764106] [2021-11-03 05:04:09,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:04:09,759 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:04:09,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c79e2d-603e-4eae-b2ed-f918067beffe/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:04:09,760 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c79e2d-603e-4eae-b2ed-f918067beffe/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:04:09,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c79e2d-603e-4eae-b2ed-f918067beffe/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 05:04:09,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:04:09,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:04:09,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:04:09,898 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 [2021-11-03 05:04:09,997 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:04:09,997 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:04:10,391 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:04:10,392 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:04:10,392 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [356764106] [2021-11-03 05:04:10,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [356764106] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:04:10,392 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:04:10,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-03 05:04:10,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731382695] [2021-11-03 05:04:10,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 05:04:10,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:04:10,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 05:04:10,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 05:04:10,394 INFO L87 Difference]: Start difference. First operand 74 states and 87 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, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-03 05:04:11,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:04:11,198 INFO L93 Difference]: Finished difference Result 86 states and 107 transitions. [2021-11-03 05:04:11,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 05:04:11,199 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, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 11 [2021-11-03 05:04:11,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:04:11,201 INFO L225 Difference]: With dead ends: 86 [2021-11-03 05:04:11,201 INFO L226 Difference]: Without dead ends: 86 [2021-11-03 05:04:11,201 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 05:04:11,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-11-03 05:04:11,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 78. [2021-11-03 05:04:11,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 46 states have (on average 1.4565217391304348) internal successors, (67), 61 states have internal predecessors, (67), 11 states have call successors, (11), 4 states have call predecessors, (11), 5 states have return successors, (15), 12 states have call predecessors, (15), 11 states have call successors, (15) [2021-11-03 05:04:11,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 93 transitions. [2021-11-03 05:04:11,225 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 93 transitions. Word has length 11 [2021-11-03 05:04:11,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:04:11,226 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 93 transitions. [2021-11-03 05:04:11,226 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, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-03 05:04:11,227 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 93 transitions. [2021-11-03 05:04:11,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-03 05:04:11,228 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:04:11,228 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:04:11,244 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c79e2d-603e-4eae-b2ed-f918067beffe/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-03 05:04:11,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c79e2d-603e-4eae-b2ed-f918067beffe/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:04:11,444 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting checkErr0REQUIRES_VIOLATION === [maxErr0REQUIRES_VIOLATION, maxErr1REQUIRES_VIOLATION, maxErr2REQUIRES_VIOLATION, maxErr3REQUIRES_VIOLATION, maxErr4REQUIRES_VIOLATION (and 15 more)] === [2021-11-03 05:04:11,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:04:11,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1041946460, now seen corresponding path program 1 times [2021-11-03 05:04:11,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:04:11,446 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1314175664] [2021-11-03 05:04:11,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:04:11,446 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:04:11,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c79e2d-603e-4eae-b2ed-f918067beffe/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:04:11,447 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c79e2d-603e-4eae-b2ed-f918067beffe/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:04:11,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c79e2d-603e-4eae-b2ed-f918067beffe/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 05:04:11,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:04:11,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-03 05:04:11,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:04:11,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:04:11,737 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:04:11,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:04:11,879 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:04:11,879 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1314175664] [2021-11-03 05:04:11,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1314175664] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:04:11,880 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:04:11,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2021-11-03 05:04:11,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977882629] [2021-11-03 05:04:11,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 05:04:11,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:04:11,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 05:04:11,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-03 05:04:11,882 INFO L87 Difference]: Start difference. First operand 78 states and 93 transitions. Second operand has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-03 05:04:12,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:04:12,003 INFO L93 Difference]: Finished difference Result 89 states and 105 transitions. [2021-11-03 05:04:12,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 05:04:12,004 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2021-11-03 05:04:12,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:04:12,006 INFO L225 Difference]: With dead ends: 89 [2021-11-03 05:04:12,006 INFO L226 Difference]: Without dead ends: 89 [2021-11-03 05:04:12,007 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:04:12,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-11-03 05:04:12,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 84. [2021-11-03 05:04:12,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 50 states have (on average 1.42) internal successors, (71), 65 states have internal predecessors, (71), 12 states have call successors, (12), 5 states have call predecessors, (12), 6 states have return successors, (16), 13 states have call predecessors, (16), 12 states have call successors, (16) [2021-11-03 05:04:12,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 99 transitions. [2021-11-03 05:04:12,019 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 99 transitions. Word has length 17 [2021-11-03 05:04:12,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:04:12,019 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 99 transitions. [2021-11-03 05:04:12,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-03 05:04:12,020 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 99 transitions. [2021-11-03 05:04:12,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-03 05:04:12,021 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:04:12,021 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] [2021-11-03 05:04:12,036 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c79e2d-603e-4eae-b2ed-f918067beffe/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-03 05:04:12,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c79e2d-603e-4eae-b2ed-f918067beffe/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:04:12,230 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [maxErr0REQUIRES_VIOLATION, maxErr1REQUIRES_VIOLATION, maxErr2REQUIRES_VIOLATION, maxErr3REQUIRES_VIOLATION, maxErr4REQUIRES_VIOLATION (and 15 more)] === [2021-11-03 05:04:12,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:04:12,231 INFO L85 PathProgramCache]: Analyzing trace with hash -868680531, now seen corresponding path program 1 times [2021-11-03 05:04:12,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:04:12,231 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2111118907] [2021-11-03 05:04:12,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:04:12,232 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:04:12,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c79e2d-603e-4eae-b2ed-f918067beffe/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:04:12,232 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c79e2d-603e-4eae-b2ed-f918067beffe/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:04:12,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c79e2d-603e-4eae-b2ed-f918067beffe/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 05:04:12,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:04:12,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 05:04:12,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:04:12,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:04:12,410 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:04:12,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:04:12,508 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:04:12,508 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2111118907] [2021-11-03 05:04:12,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2111118907] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:04:12,508 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:04:12,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 05:04:12,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247548806] [2021-11-03 05:04:12,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:04:12,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:04:12,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:04:12,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:04:12,512 INFO L87 Difference]: Start difference. First operand 84 states and 99 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-03 05:04:12,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:04:12,764 INFO L93 Difference]: Finished difference Result 86 states and 100 transitions. [2021-11-03 05:04:12,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:04:12,766 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 20 [2021-11-03 05:04:12,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:04:12,767 INFO L225 Difference]: With dead ends: 86 [2021-11-03 05:04:12,767 INFO L226 Difference]: Without dead ends: 72 [2021-11-03 05:04:12,768 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:04:12,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-11-03 05:04:12,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2021-11-03 05:04:12,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 42 states have (on average 1.5) internal successors, (63), 57 states have internal predecessors, (63), 10 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (13), 11 states have call predecessors, (13), 10 states have call successors, (13) [2021-11-03 05:04:12,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 86 transitions. [2021-11-03 05:04:12,776 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 86 transitions. Word has length 20 [2021-11-03 05:04:12,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:04:12,776 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 86 transitions. [2021-11-03 05:04:12,776 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-03 05:04:12,776 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 86 transitions. [2021-11-03 05:04:12,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-03 05:04:12,777 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:04:12,778 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:04:12,797 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c79e2d-603e-4eae-b2ed-f918067beffe/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-03 05:04:12,992 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c79e2d-603e-4eae-b2ed-f918067beffe/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:04:12,992 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting nondet_treeErr3REQUIRES_VIOLATION === [maxErr0REQUIRES_VIOLATION, maxErr1REQUIRES_VIOLATION, maxErr2REQUIRES_VIOLATION, maxErr3REQUIRES_VIOLATION, maxErr4REQUIRES_VIOLATION (and 15 more)] === [2021-11-03 05:04:12,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:04:12,992 INFO L85 PathProgramCache]: Analyzing trace with hash -360622957, now seen corresponding path program 1 times [2021-11-03 05:04:12,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:04:12,994 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1773345965] [2021-11-03 05:04:12,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:04:12,994 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:04:12,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c79e2d-603e-4eae-b2ed-f918067beffe/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:04:12,995 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c79e2d-603e-4eae-b2ed-f918067beffe/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:04:13,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c79e2d-603e-4eae-b2ed-f918067beffe/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-03 05:04:13,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:04:13,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-03 05:04:13,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:04:13,286 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 [2021-11-03 05:04:13,293 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 [2021-11-03 05:04:13,659 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-03 05:04:13,660 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 28 treesize of output 30 [2021-11-03 05:04:13,672 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-03 05:04:13,672 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 27 treesize of output 27 [2021-11-03 05:04:13,729 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-03 05:04:13,729 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:04:20,322 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_BEFORE_CALL_6 (_ BitVec 32))) (or (let ((.cse0 (bvadd (_ bv8 32) v_nondet_tree_~n~0.offset_BEFORE_CALL_4))) (and (bvule (bvadd (_ bv4 32) v_nondet_tree_~n~0.offset_BEFORE_CALL_4) .cse0) (bvule .cse0 (select |c_#length| v_nondet_tree_~n~0.base_BEFORE_CALL_6)))) (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 [2021-11-03 05:04:22,026 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:04:22,027 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1773345965] [2021-11-03 05:04:22,027 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [v_nondet_tree_~n~0.offset_BEFORE_CALL_4, v_nondet_tree_~n~0.base_BEFORE_CALL_6] [2021-11-03 05:04:22,028 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1439067695] [2021-11-03 05:04:22,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:04:22,028 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:04:22,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c79e2d-603e-4eae-b2ed-f918067beffe/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:04:22,034 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c79e2d-603e-4eae-b2ed-f918067beffe/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:04:22,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c79e2d-603e-4eae-b2ed-f918067beffe/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-11-03 05:04:22,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:04:22,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-03 05:04:22,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:04:22,416 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 [2021-11-03 05:04:22,424 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 [2021-11-03 05:04:22,765 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-03 05:04:22,765 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 29 [2021-11-03 05:04:22,784 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-03 05:04:22,784 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 26 [2021-11-03 05:04:22,845 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-03 05:04:22,846 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:04:27,760 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_nondet_tree_~n~0.offset_BEFORE_CALL_6 (_ BitVec 32)) (v_nondet_tree_~n~0.base_BEFORE_CALL_8 (_ BitVec 32))) (or (exists ((v_nondet_tree_~n~0.base_19 (_ BitVec 32))) (and (let ((.cse0 (bvadd (_ bv8 32) v_nondet_tree_~n~0.offset_BEFORE_CALL_6))) (or (not (bvule .cse0 (select (store |c_old(#length)| v_nondet_tree_~n~0.base_19 (_ bv12 32)) v_nondet_tree_~n~0.base_BEFORE_CALL_8))) (not (bvule (bvadd (_ bv4 32) v_nondet_tree_~n~0.offset_BEFORE_CALL_6) .cse0)))) (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (select |c_old(#valid)| v_nondet_tree_~n~0.base_19)))))))) (let ((.cse1 (bvadd (_ bv8 32) v_nondet_tree_~n~0.offset_BEFORE_CALL_6))) (and (bvule (bvadd (_ bv4 32) v_nondet_tree_~n~0.offset_BEFORE_CALL_6) .cse1) (bvule .cse1 (select |c_#length| v_nondet_tree_~n~0.base_BEFORE_CALL_8)))))) is different from false [2021-11-03 05:04:29,363 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [v_nondet_tree_~n~0.offset_BEFORE_CALL_6, v_nondet_tree_~n~0.base_BEFORE_CALL_8] [2021-11-03 05:04:29,363 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428939955] [2021-11-03 05:04:29,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:04:29,364 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:04:29,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c79e2d-603e-4eae-b2ed-f918067beffe/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:04:29,370 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c79e2d-603e-4eae-b2ed-f918067beffe/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 05:04:29,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c79e2d-603e-4eae-b2ed-f918067beffe/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-03 05:04:29,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:04:29,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-03 05:04:29,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:04:29,684 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 [2021-11-03 05:04:30,309 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-03 05:04:30,310 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 28 treesize of output 30 [2021-11-03 05:04:30,328 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-03 05:04:30,329 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 27 treesize of output 27 [2021-11-03 05:04:30,383 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-03 05:04:30,383 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:04:43,101 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [v_nondet_tree_~n~0.offset_BEFORE_CALL_8, v_nondet_tree_~n~0.base_BEFORE_CALL_10] [2021-11-03 05:04:43,101 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:04:43,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-11-03 05:04:43,102 ERROR L172 FreeRefinementEngine]: Strategy WALRUS failed to provide any proof altough trace is infeasible [2021-11-03 05:04:43,102 INFO L627 BasicCegarLoop]: Counterexample might be feasible [2021-11-03 05:04:43,109 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location nondet_treeErr3REQUIRES_VIOLATION [2021-11-03 05:04:43,111 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location maxErr0REQUIRES_VIOLATION [2021-11-03 05:04:43,111 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location maxErr1REQUIRES_VIOLATION [2021-11-03 05:04:43,111 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location maxErr2REQUIRES_VIOLATION [2021-11-03 05:04:43,111 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location maxErr3REQUIRES_VIOLATION [2021-11-03 05:04:43,111 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location maxErr4REQUIRES_VIOLATION [2021-11-03 05:04:43,111 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location maxErr5REQUIRES_VIOLATION [2021-11-03 05:04:43,112 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location nondet_treeErr0REQUIRES_VIOLATION [2021-11-03 05:04:43,112 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location nondet_treeErr1REQUIRES_VIOLATION [2021-11-03 05:04:43,112 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location nondet_treeErr2REQUIRES_VIOLATION [2021-11-03 05:04:43,112 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location nondet_treeErr4REQUIRES_VIOLATION [2021-11-03 05:04:43,112 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location nondet_treeErr5REQUIRES_VIOLATION [2021-11-03 05:04:43,112 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK [2021-11-03 05:04:43,112 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location checkErr0REQUIRES_VIOLATION [2021-11-03 05:04:43,112 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location checkErr1REQUIRES_VIOLATION [2021-11-03 05:04:43,113 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location checkErr2ASSERT_VIOLATIONMEMORY_LEAK [2021-11-03 05:04:43,113 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location checkErr3REQUIRES_VIOLATION [2021-11-03 05:04:43,113 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location checkErr4REQUIRES_VIOLATION [2021-11-03 05:04:43,113 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location checkErr5REQUIRES_VIOLATION [2021-11-03 05:04:43,113 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location checkErr6REQUIRES_VIOLATION [2021-11-03 05:04:43,116 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c79e2d-603e-4eae-b2ed-f918067beffe/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2021-11-03 05:04:43,324 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c79e2d-603e-4eae-b2ed-f918067beffe/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-03 05:04:43,540 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c79e2d-603e-4eae-b2ed-f918067beffe/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-03 05:04:43,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c79e2d-603e-4eae-b2ed-f918067beffe/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c79e2d-603e-4eae-b2ed-f918067beffe/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c79e2d-603e-4eae-b2ed-f918067beffe/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:04:43,717 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:04:43,720 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-03 05:04:43,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 05:04:43 BoogieIcfgContainer [2021-11-03 05:04:43,732 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-03 05:04:43,733 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-03 05:04:43,733 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-03 05:04:43,733 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-03 05:04:43,734 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:04:06" (3/4) ... [2021-11-03 05:04:43,738 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-03 05:04:43,738 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-03 05:04:43,739 INFO L168 Benchmark]: Toolchain (without parser) took 38988.27 ms. Allocated memory was 83.9 MB in the beginning and 117.4 MB in the end (delta: 33.6 MB). Free memory was 47.3 MB in the beginning and 86.7 MB in the end (delta: -39.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 05:04:43,740 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 83.9 MB. Free memory was 63.9 MB in the beginning and 63.8 MB in the end (delta: 67.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 05:04:43,740 INFO L168 Benchmark]: CACSL2BoogieTranslator took 508.18 ms. Allocated memory is still 83.9 MB. Free memory was 47.1 MB in the beginning and 57.0 MB in the end (delta: -9.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-11-03 05:04:43,741 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.91 ms. Allocated memory is still 83.9 MB. Free memory was 57.0 MB in the beginning and 55.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-03 05:04:43,741 INFO L168 Benchmark]: Boogie Preprocessor took 54.02 ms. Allocated memory is still 83.9 MB. Free memory was 55.5 MB in the beginning and 54.0 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 05:04:43,742 INFO L168 Benchmark]: RCFGBuilder took 745.62 ms. Allocated memory is still 83.9 MB. Free memory was 54.0 MB in the beginning and 63.4 MB in the end (delta: -9.4 MB). Peak memory consumption was 19.0 MB. Max. memory is 16.1 GB. [2021-11-03 05:04:43,742 INFO L168 Benchmark]: TraceAbstraction took 37625.38 ms. Allocated memory was 83.9 MB in the beginning and 117.4 MB in the end (delta: 33.6 MB). Free memory was 63.1 MB in the beginning and 86.7 MB in the end (delta: -23.6 MB). Peak memory consumption was 9.2 MB. Max. memory is 16.1 GB. [2021-11-03 05:04:43,743 INFO L168 Benchmark]: Witness Printer took 4.89 ms. Allocated memory is still 117.4 MB. Free memory is still 86.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 05:04:43,746 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 83.9 MB. Free memory was 63.9 MB in the beginning and 63.8 MB in the end (delta: 67.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 508.18 ms. Allocated memory is still 83.9 MB. Free memory was 47.1 MB in the beginning and 57.0 MB in the end (delta: -9.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.91 ms. Allocated memory is still 83.9 MB. Free memory was 57.0 MB in the beginning and 55.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 54.02 ms. Allocated memory is still 83.9 MB. Free memory was 55.5 MB in the beginning and 54.0 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 745.62 ms. Allocated memory is still 83.9 MB. Free memory was 54.0 MB in the beginning and 63.4 MB in the end (delta: -9.4 MB). Peak memory consumption was 19.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 37625.38 ms. Allocated memory was 83.9 MB in the beginning and 117.4 MB in the end (delta: 33.6 MB). Free memory was 63.1 MB in the beginning and 86.7 MB in the end (delta: -23.6 MB). Peak memory consumption was 9.2 MB. Max. memory is 16.1 GB. * Witness Printer took 4.89 ms. Allocated memory is still 117.4 MB. Free memory is still 86.7 MB. There was no memory consumed. 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 - UnprovableResult [Line: 29]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L66] CALL nondet_tree() [L24] COND FALSE !(__VERIFIER_nondet_bool()) [L27] struct node *n = (struct node *)malloc(sizeof(struct node)); [L28] n->data = __VERIFIER_nondet_int() [L29] CALL, EXPR nondet_tree() [L24] COND FALSE !(__VERIFIER_nondet_bool()) [L27] struct node *n = (struct node *)malloc(sizeof(struct node)); [L28] n->data = __VERIFIER_nondet_int() [L29] CALL, EXPR nondet_tree() [L24] COND FALSE !(__VERIFIER_nondet_bool()) [L27] struct node *n = (struct node *)malloc(sizeof(struct node)); [L28] n->data = __VERIFIER_nondet_int() [L29] CALL, EXPR nondet_tree() [L24] COND TRUE __VERIFIER_nondet_bool() [L25] return 0; [L29] RET, EXPR nondet_tree() [L29] n->left = nondet_tree() [L30] CALL, EXPR nondet_tree() [L24] COND TRUE __VERIFIER_nondet_bool() [L25] return 0; [L30] RET, EXPR nondet_tree() [L30] n->right = nondet_tree() [L31] return n; [L29] RET, EXPR nondet_tree() [L29] n->left = nondet_tree() - UnprovableResult [Line: 39]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 39]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 40]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 40]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 41]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 41]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 28]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 28]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 29]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 30]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 30]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 65]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 50]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 50]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 15]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 53]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 53]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 55]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 55]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 72 locations, 20 error locations. Started 1 CEGAR loops. OverallTime: 37.5s, OverallIterations: 8, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 486 SDtfs, 224 SDslu, 901 SDs, 0 SdLazy, 527 SolverSat, 62 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 151 GetRequests, 123 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=84occurred in iteration=6, InterpolantAutomatonStates: 37, 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, 22 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 10.8s InterpolantComputationTime, 109 NumberOfCodeBlocks, 109 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 174 ConstructedInterpolants, 17 QuantifiedInterpolants, 904 SizeOfPredicates, 13 NumberOfNonLiveVariables, 554 ConjunctsInSsa, 58 ConjunctsInUnsatCore, 15 InterpolantComputations, 14 PerfectInterpolantSequences, 20/30 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-03 05:04:43,786 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c79e2d-603e-4eae-b2ed-f918067beffe/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN