./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test21-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 7e70badd Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3fc34f2-6521-40ec-9ca2-93b5b7ea7be9/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3fc34f2-6521-40ec-9ca2-93b5b7ea7be9/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3fc34f2-6521-40ec-9ca2-93b5b7ea7be9/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3fc34f2-6521-40ec-9ca2-93b5b7ea7be9/bin/uautomizer-wIGwrQj20G/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test21-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3fc34f2-6521-40ec-9ca2-93b5b7ea7be9/bin/uautomizer-wIGwrQj20G/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3fc34f2-6521-40ec-9ca2-93b5b7ea7be9/bin/uautomizer-wIGwrQj20G --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8cad73f64954eeb86e2707e579f8aca932182fe823da421e8ece02d4d63f0cc3 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 13:55:13,459 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 13:55:13,462 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 13:55:13,514 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 13:55:13,515 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 13:55:13,519 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 13:55:13,522 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 13:55:13,526 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 13:55:13,529 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 13:55:13,538 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 13:55:13,539 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 13:55:13,541 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 13:55:13,541 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 13:55:13,544 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 13:55:13,546 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 13:55:13,548 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 13:55:13,549 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 13:55:13,550 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 13:55:13,552 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 13:55:13,555 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 13:55:13,557 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 13:55:13,558 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 13:55:13,560 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 13:55:13,560 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 13:55:13,564 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 13:55:13,565 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 13:55:13,565 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 13:55:13,566 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 13:55:13,567 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 13:55:13,568 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 13:55:13,568 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 13:55:13,569 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 13:55:13,572 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 13:55:13,573 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 13:55:13,574 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 13:55:13,575 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 13:55:13,576 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 13:55:13,576 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 13:55:13,576 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 13:55:13,577 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 13:55:13,578 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 13:55:13,581 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3fc34f2-6521-40ec-9ca2-93b5b7ea7be9/bin/uautomizer-wIGwrQj20G/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-23 13:55:13,622 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 13:55:13,629 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 13:55:13,630 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 13:55:13,630 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 13:55:13,641 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 13:55:13,642 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 13:55:13,642 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 13:55:13,643 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 13:55:13,643 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 13:55:13,644 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 13:55:13,645 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 13:55:13,645 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 13:55:13,645 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 13:55:13,646 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-23 13:55:13,646 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-23 13:55:13,646 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-23 13:55:13,646 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 13:55:13,647 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 13:55:13,647 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 13:55:13,655 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 13:55:13,656 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 13:55:13,657 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 13:55:13,657 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 13:55:13,657 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 13:55:13,658 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 13:55:13,658 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 13:55:13,658 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 13:55:13,658 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 13:55:13,659 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 13:55:13,661 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3fc34f2-6521-40ec-9ca2-93b5b7ea7be9/bin/uautomizer-wIGwrQj20G/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3fc34f2-6521-40ec-9ca2-93b5b7ea7be9/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8cad73f64954eeb86e2707e579f8aca932182fe823da421e8ece02d4d63f0cc3 [2021-11-23 13:55:13,888 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 13:55:13,905 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 13:55:13,908 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 13:55:13,909 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 13:55:13,914 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 13:55:13,915 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3fc34f2-6521-40ec-9ca2-93b5b7ea7be9/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/ldv-memsafety/memleaks_test21-2.i [2021-11-23 13:55:13,984 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3fc34f2-6521-40ec-9ca2-93b5b7ea7be9/bin/uautomizer-wIGwrQj20G/data/b66010f3e/1ffc289a3a4d444c8026143f9358c6f0/FLAG558d1a590 [2021-11-23 13:55:14,578 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 13:55:14,579 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3fc34f2-6521-40ec-9ca2-93b5b7ea7be9/sv-benchmarks/c/ldv-memsafety/memleaks_test21-2.i [2021-11-23 13:55:14,604 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3fc34f2-6521-40ec-9ca2-93b5b7ea7be9/bin/uautomizer-wIGwrQj20G/data/b66010f3e/1ffc289a3a4d444c8026143f9358c6f0/FLAG558d1a590 [2021-11-23 13:55:14,807 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3fc34f2-6521-40ec-9ca2-93b5b7ea7be9/bin/uautomizer-wIGwrQj20G/data/b66010f3e/1ffc289a3a4d444c8026143f9358c6f0 [2021-11-23 13:55:14,809 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 13:55:14,810 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 13:55:14,819 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 13:55:14,820 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 13:55:14,827 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 13:55:14,828 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:55:14" (1/1) ... [2021-11-23 13:55:14,829 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8c2b5a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:14, skipping insertion in model container [2021-11-23 13:55:14,830 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:55:14" (1/1) ... [2021-11-23 13:55:14,836 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 13:55:14,878 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 13:55:15,284 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:55:15,302 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) [2021-11-23 13:55:15,303 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4eab8eae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:15, skipping insertion in model container [2021-11-23 13:55:15,303 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 13:55:15,303 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-23 13:55:15,305 INFO L158 Benchmark]: Toolchain (without parser) took 494.24ms. Allocated memory is still 90.2MB. Free memory was 66.5MB in the beginning and 62.2MB in the end (delta: 4.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 13:55:15,306 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 90.2MB. Free memory is still 62.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 13:55:15,307 INFO L158 Benchmark]: CACSL2BoogieTranslator took 483.99ms. Allocated memory is still 90.2MB. Free memory was 66.2MB in the beginning and 62.2MB in the end (delta: 4.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 13:55:15,309 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 90.2MB. Free memory is still 62.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 483.99ms. Allocated memory is still 90.2MB. Free memory was 66.2MB in the beginning and 62.2MB in the end (delta: 4.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3fc34f2-6521-40ec-9ca2-93b5b7ea7be9/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3fc34f2-6521-40ec-9ca2-93b5b7ea7be9/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3fc34f2-6521-40ec-9ca2-93b5b7ea7be9/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3fc34f2-6521-40ec-9ca2-93b5b7ea7be9/bin/uautomizer-wIGwrQj20G/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test21-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3fc34f2-6521-40ec-9ca2-93b5b7ea7be9/bin/uautomizer-wIGwrQj20G/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3fc34f2-6521-40ec-9ca2-93b5b7ea7be9/bin/uautomizer-wIGwrQj20G --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8cad73f64954eeb86e2707e579f8aca932182fe823da421e8ece02d4d63f0cc3 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 13:55:17,463 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 13:55:17,466 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 13:55:17,522 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 13:55:17,523 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 13:55:17,524 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 13:55:17,526 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 13:55:17,529 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 13:55:17,531 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 13:55:17,533 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 13:55:17,534 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 13:55:17,535 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 13:55:17,536 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 13:55:17,537 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 13:55:17,539 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 13:55:17,541 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 13:55:17,542 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 13:55:17,543 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 13:55:17,545 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 13:55:17,548 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 13:55:17,550 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 13:55:17,552 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 13:55:17,553 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 13:55:17,554 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 13:55:17,558 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 13:55:17,559 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 13:55:17,559 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 13:55:17,560 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 13:55:17,561 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 13:55:17,562 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 13:55:17,562 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 13:55:17,563 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 13:55:17,564 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 13:55:17,565 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 13:55:17,567 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 13:55:17,567 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 13:55:17,568 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 13:55:17,568 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 13:55:17,568 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 13:55:17,569 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 13:55:17,570 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 13:55:17,571 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3fc34f2-6521-40ec-9ca2-93b5b7ea7be9/bin/uautomizer-wIGwrQj20G/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-23 13:55:17,596 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 13:55:17,597 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 13:55:17,597 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 13:55:17,597 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 13:55:17,599 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 13:55:17,599 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 13:55:17,599 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 13:55:17,599 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 13:55:17,600 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 13:55:17,600 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 13:55:17,600 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 13:55:17,600 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 13:55:17,601 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 13:55:17,601 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-23 13:55:17,601 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-23 13:55:17,601 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-23 13:55:17,602 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 13:55:17,602 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 13:55:17,602 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 13:55:17,602 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 13:55:17,602 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 13:55:17,603 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 13:55:17,603 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 13:55:17,603 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 13:55:17,603 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 13:55:17,604 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 13:55:17,604 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 13:55:17,604 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 13:55:17,604 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-23 13:55:17,605 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 13:55:17,605 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 13:55:17,605 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 13:55:17,605 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_b3fc34f2-6521-40ec-9ca2-93b5b7ea7be9/bin/uautomizer-wIGwrQj20G/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3fc34f2-6521-40ec-9ca2-93b5b7ea7be9/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8cad73f64954eeb86e2707e579f8aca932182fe823da421e8ece02d4d63f0cc3 [2021-11-23 13:55:17,973 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 13:55:18,009 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 13:55:18,012 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 13:55:18,013 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 13:55:18,014 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 13:55:18,017 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3fc34f2-6521-40ec-9ca2-93b5b7ea7be9/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/ldv-memsafety/memleaks_test21-2.i [2021-11-23 13:55:18,092 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3fc34f2-6521-40ec-9ca2-93b5b7ea7be9/bin/uautomizer-wIGwrQj20G/data/a41b5f258/28a5ff02864b4a759d39c87743dddb40/FLAGfee01677d [2021-11-23 13:55:18,761 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 13:55:18,761 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3fc34f2-6521-40ec-9ca2-93b5b7ea7be9/sv-benchmarks/c/ldv-memsafety/memleaks_test21-2.i [2021-11-23 13:55:18,780 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3fc34f2-6521-40ec-9ca2-93b5b7ea7be9/bin/uautomizer-wIGwrQj20G/data/a41b5f258/28a5ff02864b4a759d39c87743dddb40/FLAGfee01677d [2021-11-23 13:55:19,030 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3fc34f2-6521-40ec-9ca2-93b5b7ea7be9/bin/uautomizer-wIGwrQj20G/data/a41b5f258/28a5ff02864b4a759d39c87743dddb40 [2021-11-23 13:55:19,033 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 13:55:19,034 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 13:55:19,036 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 13:55:19,036 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 13:55:19,052 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 13:55:19,053 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:55:19" (1/1) ... [2021-11-23 13:55:19,054 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44779722 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:19, skipping insertion in model container [2021-11-23 13:55:19,054 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:55:19" (1/1) ... [2021-11-23 13:55:19,065 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 13:55:19,137 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 13:55:19,672 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:55:19,702 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-23 13:55:19,719 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 13:55:19,805 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:55:19,813 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 13:55:19,894 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:55:19,958 INFO L208 MainTranslator]: Completed translation [2021-11-23 13:55:19,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:19 WrapperNode [2021-11-23 13:55:19,959 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 13:55:19,960 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 13:55:19,961 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 13:55:19,961 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 13:55:19,967 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:19" (1/1) ... [2021-11-23 13:55:20,013 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:19" (1/1) ... [2021-11-23 13:55:20,049 INFO L137 Inliner]: procedures = 167, calls = 71, calls flagged for inlining = 31, calls inlined = 6, statements flattened = 41 [2021-11-23 13:55:20,050 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 13:55:20,050 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 13:55:20,051 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 13:55:20,051 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 13:55:20,059 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:19" (1/1) ... [2021-11-23 13:55:20,060 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:19" (1/1) ... [2021-11-23 13:55:20,066 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:19" (1/1) ... [2021-11-23 13:55:20,066 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:19" (1/1) ... [2021-11-23 13:55:20,085 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:19" (1/1) ... [2021-11-23 13:55:20,087 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:19" (1/1) ... [2021-11-23 13:55:20,093 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:19" (1/1) ... [2021-11-23 13:55:20,101 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 13:55:20,106 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 13:55:20,106 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 13:55:20,106 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 13:55:20,107 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:19" (1/1) ... [2021-11-23 13:55:20,115 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 13:55:20,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3fc34f2-6521-40ec-9ca2-93b5b7ea7be9/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:55:20,150 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3fc34f2-6521-40ec-9ca2-93b5b7ea7be9/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 13:55:20,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3fc34f2-6521-40ec-9ca2-93b5b7ea7be9/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 13:55:20,199 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 13:55:20,199 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 13:55:20,199 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 13:55:20,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 13:55:20,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 13:55:20,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 13:55:20,308 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 13:55:20,310 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 13:55:20,483 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 13:55:20,489 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 13:55:20,489 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-23 13:55:20,491 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:55:20 BoogieIcfgContainer [2021-11-23 13:55:20,491 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 13:55:20,493 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 13:55:20,493 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 13:55:20,495 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 13:55:20,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:55:19" (1/3) ... [2021-11-23 13:55:20,500 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5069df2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:55:20, skipping insertion in model container [2021-11-23 13:55:20,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:19" (2/3) ... [2021-11-23 13:55:20,500 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5069df2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:55:20, skipping insertion in model container [2021-11-23 13:55:20,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:55:20" (3/3) ... [2021-11-23 13:55:20,502 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test21-2.i [2021-11-23 13:55:20,507 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 13:55:20,507 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-23 13:55:20,560 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 13:55:20,567 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 [2021-11-23 13:55:20,567 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-23 13:55:20,583 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 14 states have (on average 1.5) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:55:20,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-23 13:55:20,590 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:55:20,590 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:55:20,591 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 1 more)] === [2021-11-23 13:55:20,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:55:20,597 INFO L85 PathProgramCache]: Analyzing trace with hash 119383820, now seen corresponding path program 1 times [2021-11-23 13:55:20,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:55:20,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1749421510] [2021-11-23 13:55:20,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:55:20,610 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:55:20,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3fc34f2-6521-40ec-9ca2-93b5b7ea7be9/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:55:20,615 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3fc34f2-6521-40ec-9ca2-93b5b7ea7be9/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:55:20,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3fc34f2-6521-40ec-9ca2-93b5b7ea7be9/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 13:55:20,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:55:20,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-23 13:55:20,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:55:20,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:55:20,849 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:55:20,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:55:20,880 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:55:20,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1749421510] [2021-11-23 13:55:20,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1749421510] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:55:20,881 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:55:20,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-11-23 13:55:20,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147109703] [2021-11-23 13:55:20,884 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:55:20,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 13:55:20,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:55:20,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 13:55:20,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-23 13:55:20,916 INFO L87 Difference]: Start difference. First operand has 19 states, 14 states have (on average 1.5) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:55:21,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:55:21,040 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2021-11-23 13:55:21,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 13:55:21,042 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-23 13:55:21,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:55:21,049 INFO L225 Difference]: With dead ends: 38 [2021-11-23 13:55:21,049 INFO L226 Difference]: Without dead ends: 32 [2021-11-23 13:55:21,051 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-11-23 13:55:21,055 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 89 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:55:21,056 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 75 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:55:21,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-11-23 13:55:21,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 20. [2021-11-23 13:55:21,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 16 states have (on average 1.375) internal successors, (22), 19 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:55:21,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2021-11-23 13:55:21,087 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 8 [2021-11-23 13:55:21,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:55:21,088 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2021-11-23 13:55:21,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:55:21,088 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2021-11-23 13:55:21,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-23 13:55:21,089 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:55:21,089 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:55:21,105 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3fc34f2-6521-40ec-9ca2-93b5b7ea7be9/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-23 13:55:21,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3fc34f2-6521-40ec-9ca2-93b5b7ea7be9/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:55:21,301 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 1 more)] === [2021-11-23 13:55:21,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:55:21,302 INFO L85 PathProgramCache]: Analyzing trace with hash 119443402, now seen corresponding path program 1 times [2021-11-23 13:55:21,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:55:21,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [712127558] [2021-11-23 13:55:21,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:55:21,303 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:55:21,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3fc34f2-6521-40ec-9ca2-93b5b7ea7be9/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:55:21,305 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3fc34f2-6521-40ec-9ca2-93b5b7ea7be9/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:55:21,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3fc34f2-6521-40ec-9ca2-93b5b7ea7be9/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-23 13:55:21,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:55:21,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 13:55:21,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:55:21,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:55:21,419 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:55:21,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:55:21,439 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:55:21,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [712127558] [2021-11-23 13:55:21,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [712127558] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:55:21,440 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:55:21,440 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-23 13:55:21,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112919903] [2021-11-23 13:55:21,441 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:55:21,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:55:21,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:55:21,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:55:21,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:55:21,444 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:55:21,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:55:21,467 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2021-11-23 13:55:21,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:55:21,468 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-23 13:55:21,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:55:21,469 INFO L225 Difference]: With dead ends: 33 [2021-11-23 13:55:21,469 INFO L226 Difference]: Without dead ends: 33 [2021-11-23 13:55:21,469 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:55:21,471 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 23 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:55:21,472 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 50 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:55:21,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-11-23 13:55:21,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 22. [2021-11-23 13:55:21,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 21 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:55:21,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2021-11-23 13:55:21,477 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 8 [2021-11-23 13:55:21,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:55:21,478 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2021-11-23 13:55:21,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:55:21,478 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2021-11-23 13:55:21,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-23 13:55:21,479 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:55:21,479 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:55:21,493 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3fc34f2-6521-40ec-9ca2-93b5b7ea7be9/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-23 13:55:21,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3fc34f2-6521-40ec-9ca2-93b5b7ea7be9/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:55:21,690 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 1 more)] === [2021-11-23 13:55:21,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:55:21,691 INFO L85 PathProgramCache]: Analyzing trace with hash 176701704, now seen corresponding path program 1 times [2021-11-23 13:55:21,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:55:21,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1001187023] [2021-11-23 13:55:21,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:55:21,692 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:55:21,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3fc34f2-6521-40ec-9ca2-93b5b7ea7be9/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:55:21,693 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3fc34f2-6521-40ec-9ca2-93b5b7ea7be9/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:55:21,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3fc34f2-6521-40ec-9ca2-93b5b7ea7be9/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-23 13:55:21,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:55:21,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-23 13:55:21,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:55:21,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:55:21,806 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:55:21,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:55:21,833 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:55:21,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1001187023] [2021-11-23 13:55:21,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1001187023] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:55:21,833 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:55:21,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-23 13:55:21,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56387449] [2021-11-23 13:55:21,834 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:55:21,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:55:21,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:55:21,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:55:21,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:55:21,844 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:55:21,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:55:21,868 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2021-11-23 13:55:21,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:55:21,869 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-23 13:55:21,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:55:21,870 INFO L225 Difference]: With dead ends: 24 [2021-11-23 13:55:21,870 INFO L226 Difference]: Without dead ends: 24 [2021-11-23 13:55:21,870 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:55:21,872 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 9 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:55:21,873 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 45 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:55:21,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-11-23 13:55:21,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 20. [2021-11-23 13:55:21,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:55:21,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2021-11-23 13:55:21,878 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 8 [2021-11-23 13:55:21,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:55:21,878 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2021-11-23 13:55:21,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:55:21,879 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2021-11-23 13:55:21,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-23 13:55:21,879 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:55:21,880 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:55:21,890 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3fc34f2-6521-40ec-9ca2-93b5b7ea7be9/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-23 13:55:22,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3fc34f2-6521-40ec-9ca2-93b5b7ea7be9/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:55:22,093 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 1 more)] === [2021-11-23 13:55:22,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:55:22,094 INFO L85 PathProgramCache]: Analyzing trace with hash -594068823, now seen corresponding path program 1 times [2021-11-23 13:55:22,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:55:22,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [807639351] [2021-11-23 13:55:22,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:55:22,095 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:55:22,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3fc34f2-6521-40ec-9ca2-93b5b7ea7be9/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:55:22,096 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3fc34f2-6521-40ec-9ca2-93b5b7ea7be9/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:55:22,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3fc34f2-6521-40ec-9ca2-93b5b7ea7be9/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-23 13:55:22,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:55:22,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 13:55:22,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:55:22,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:55:22,352 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:55:22,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:55:22,493 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:55:22,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [807639351] [2021-11-23 13:55:22,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [807639351] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:55:22,494 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:55:22,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 12 [2021-11-23 13:55:22,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009676319] [2021-11-23 13:55:22,494 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:55:22,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-23 13:55:22,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:55:22,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-23 13:55:22,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-11-23 13:55:22,496 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand has 13 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:55:23,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:55:23,031 INFO L93 Difference]: Finished difference Result 33 states and 32 transitions. [2021-11-23 13:55:23,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-23 13:55:23,032 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-23 13:55:23,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:55:23,033 INFO L225 Difference]: With dead ends: 33 [2021-11-23 13:55:23,033 INFO L226 Difference]: Without dead ends: 33 [2021-11-23 13:55:23,034 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=140, Invalid=322, Unknown=0, NotChecked=0, Total=462 [2021-11-23 13:55:23,035 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 108 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 13:55:23,036 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 53 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 13:55:23,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-11-23 13:55:23,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 19. [2021-11-23 13:55:23,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:55:23,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2021-11-23 13:55:23,041 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 9 [2021-11-23 13:55:23,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:55:23,041 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2021-11-23 13:55:23,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:55:23,042 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2021-11-23 13:55:23,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-23 13:55:23,043 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:55:23,043 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:55:23,057 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3fc34f2-6521-40ec-9ca2-93b5b7ea7be9/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-23 13:55:23,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3fc34f2-6521-40ec-9ca2-93b5b7ea7be9/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:55:23,258 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 1 more)] === [2021-11-23 13:55:23,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:55:23,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1236264274, now seen corresponding path program 1 times [2021-11-23 13:55:23,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:55:23,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [758248596] [2021-11-23 13:55:23,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:55:23,259 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:55:23,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3fc34f2-6521-40ec-9ca2-93b5b7ea7be9/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:55:23,260 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3fc34f2-6521-40ec-9ca2-93b5b7ea7be9/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:55:23,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3fc34f2-6521-40ec-9ca2-93b5b7ea7be9/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-23 13:55:23,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:55:23,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-23 13:55:23,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:55:23,391 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 [2021-11-23 13:55:23,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:55:23,487 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:55:23,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:55:23,553 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:55:23,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [758248596] [2021-11-23 13:55:23,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [758248596] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:55:23,553 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:55:23,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-11-23 13:55:23,553 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356973046] [2021-11-23 13:55:23,554 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:55:23,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 13:55:23,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:55:23,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 13:55:23,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-23 13:55:23,555 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:55:23,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:55:23,684 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2021-11-23 13:55:23,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 13:55:23,685 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-23 13:55:23,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:55:23,686 INFO L225 Difference]: With dead ends: 24 [2021-11-23 13:55:23,686 INFO L226 Difference]: Without dead ends: 24 [2021-11-23 13:55:23,686 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 4 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-11-23 13:55:23,687 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 18 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:55:23,688 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 47 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:55:23,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-11-23 13:55:23,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-11-23 13:55:23,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 23 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:55:23,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2021-11-23 13:55:23,692 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 10 [2021-11-23 13:55:23,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:55:23,692 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2021-11-23 13:55:23,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:55:23,693 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2021-11-23 13:55:23,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-23 13:55:23,693 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:55:23,693 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:55:23,708 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3fc34f2-6521-40ec-9ca2-93b5b7ea7be9/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-23 13:55:23,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3fc34f2-6521-40ec-9ca2-93b5b7ea7be9/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:55:23,905 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 1 more)] === [2021-11-23 13:55:23,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:55:23,905 INFO L85 PathProgramCache]: Analyzing trace with hash -2045610900, now seen corresponding path program 1 times [2021-11-23 13:55:23,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:55:23,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [620162420] [2021-11-23 13:55:23,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:55:23,906 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:55:23,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3fc34f2-6521-40ec-9ca2-93b5b7ea7be9/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:55:23,907 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3fc34f2-6521-40ec-9ca2-93b5b7ea7be9/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:55:23,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3fc34f2-6521-40ec-9ca2-93b5b7ea7be9/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-23 13:55:23,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:55:23,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 13:55:23,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:55:23,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:55:23,991 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:55:24,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:55:24,028 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:55:24,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [620162420] [2021-11-23 13:55:24,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [620162420] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:55:24,029 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:55:24,029 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-23 13:55:24,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679728323] [2021-11-23 13:55:24,029 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:55:24,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:55:24,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:55:24,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:55:24,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:55:24,031 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:55:24,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:55:24,063 INFO L93 Difference]: Finished difference Result 22 states and 21 transitions. [2021-11-23 13:55:24,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:55:24,064 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-23 13:55:24,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:55:24,064 INFO L225 Difference]: With dead ends: 22 [2021-11-23 13:55:24,064 INFO L226 Difference]: Without dead ends: 22 [2021-11-23 13:55:24,068 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:55:24,072 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 13 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:55:24,073 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 37 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:55:24,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-11-23 13:55:24,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 18. [2021-11-23 13:55:24,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:55:24,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2021-11-23 13:55:24,078 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 10 [2021-11-23 13:55:24,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:55:24,078 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2021-11-23 13:55:24,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:55:24,078 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2021-11-23 13:55:24,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-23 13:55:24,080 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:55:24,080 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:55:24,093 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3fc34f2-6521-40ec-9ca2-93b5b7ea7be9/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-23 13:55:24,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3fc34f2-6521-40ec-9ca2-93b5b7ea7be9/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:55:24,291 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 1 more)] === [2021-11-23 13:55:24,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:55:24,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1988106325, now seen corresponding path program 1 times [2021-11-23 13:55:24,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:55:24,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1354268345] [2021-11-23 13:55:24,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:55:24,292 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:55:24,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3fc34f2-6521-40ec-9ca2-93b5b7ea7be9/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:55:24,293 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3fc34f2-6521-40ec-9ca2-93b5b7ea7be9/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:55:24,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:55:24,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3fc34f2-6521-40ec-9ca2-93b5b7ea7be9/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-23 13:55:24,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 13:55:24,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:55:24,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:55:24,406 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:55:24,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:55:24,435 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:55:24,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1354268345] [2021-11-23 13:55:24,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1354268345] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:55:24,436 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:55:24,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-23 13:55:24,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168431743] [2021-11-23 13:55:24,436 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:55:24,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:55:24,437 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:55:24,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:55:24,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:55:24,438 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:55:24,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:55:24,451 INFO L93 Difference]: Finished difference Result 21 states and 20 transitions. [2021-11-23 13:55:24,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:55:24,451 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-23 13:55:24,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:55:24,455 INFO L225 Difference]: With dead ends: 21 [2021-11-23 13:55:24,455 INFO L226 Difference]: Without dead ends: 14 [2021-11-23 13:55:24,456 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:55:24,458 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:55:24,461 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 25 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:55:24,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-11-23 13:55:24,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-11-23 13:55:24,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.0) internal successors, (13), 13 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:55:24,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 13 transitions. [2021-11-23 13:55:24,469 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 13 transitions. Word has length 10 [2021-11-23 13:55:24,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:55:24,469 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 13 transitions. [2021-11-23 13:55:24,470 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:55:24,470 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 13 transitions. [2021-11-23 13:55:24,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-23 13:55:24,471 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:55:24,479 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:55:24,499 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3fc34f2-6521-40ec-9ca2-93b5b7ea7be9/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-23 13:55:24,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3fc34f2-6521-40ec-9ca2-93b5b7ea7be9/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:55:24,690 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 1 more)] === [2021-11-23 13:55:24,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:55:24,690 INFO L85 PathProgramCache]: Analyzing trace with hash -204364880, now seen corresponding path program 1 times [2021-11-23 13:55:24,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:55:24,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1367924720] [2021-11-23 13:55:24,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:55:24,691 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:55:24,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3fc34f2-6521-40ec-9ca2-93b5b7ea7be9/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:55:24,692 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3fc34f2-6521-40ec-9ca2-93b5b7ea7be9/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:55:24,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3fc34f2-6521-40ec-9ca2-93b5b7ea7be9/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-23 13:55:24,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:55:24,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-23 13:55:24,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:55:24,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:55:24,934 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:55:31,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:55:31,360 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:55:31,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1367924720] [2021-11-23 13:55:31,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1367924720] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:55:31,360 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:55:31,360 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 14 [2021-11-23 13:55:31,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567415697] [2021-11-23 13:55:31,361 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:55:31,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-23 13:55:31,361 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:55:31,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-23 13:55:31,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=172, Unknown=3, NotChecked=0, Total=210 [2021-11-23 13:55:31,362 INFO L87 Difference]: Start difference. First operand 14 states and 13 transitions. Second operand has 15 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 15 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:55:31,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:55:31,687 INFO L93 Difference]: Finished difference Result 13 states and 12 transitions. [2021-11-23 13:55:31,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 13:55:31,687 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 15 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-23 13:55:31,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:55:31,688 INFO L225 Difference]: With dead ends: 13 [2021-11-23 13:55:31,688 INFO L226 Difference]: Without dead ends: 0 [2021-11-23 13:55:31,688 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=87, Invalid=290, Unknown=3, NotChecked=0, Total=380 [2021-11-23 13:55:31,689 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 44 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 9 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:55:31,689 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 18 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 36 Invalid, 0 Unknown, 9 Unchecked, 0.1s Time] [2021-11-23 13:55:31,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-23 13:55:31,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-23 13:55:31,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:55:31,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-23 13:55:31,691 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2021-11-23 13:55:31,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:55:31,691 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-23 13:55:31,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 15 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:55:31,691 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-23 13:55:31,691 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-23 13:55:31,693 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE (3 of 4 remaining) [2021-11-23 13:55:31,694 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE (2 of 4 remaining) [2021-11-23 13:55:31,694 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (1 of 4 remaining) [2021-11-23 13:55:31,695 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (0 of 4 remaining) [2021-11-23 13:55:31,713 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3fc34f2-6521-40ec-9ca2-93b5b7ea7be9/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-23 13:55:31,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3fc34f2-6521-40ec-9ca2-93b5b7ea7be9/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:55:31,916 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:55:31,918 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 13:55:31,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 01:55:31 BoogieIcfgContainer [2021-11-23 13:55:31,920 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 13:55:31,921 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 13:55:31,921 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 13:55:31,921 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 13:55:31,921 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:55:20" (3/4) ... [2021-11-23 13:55:31,923 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-23 13:55:31,931 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-11-23 13:55:31,931 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-11-23 13:55:31,931 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-23 13:55:31,961 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3fc34f2-6521-40ec-9ca2-93b5b7ea7be9/bin/uautomizer-wIGwrQj20G/witness.graphml [2021-11-23 13:55:31,961 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 13:55:31,961 INFO L158 Benchmark]: Toolchain (without parser) took 12926.99ms. Allocated memory was 69.2MB in the beginning and 83.9MB in the end (delta: 14.7MB). Free memory was 49.3MB in the beginning and 30.1MB in the end (delta: 19.2MB). Peak memory consumption was 33.8MB. Max. memory is 16.1GB. [2021-11-23 13:55:31,962 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 69.2MB. Free memory is still 50.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 13:55:31,962 INFO L158 Benchmark]: CACSL2BoogieTranslator took 923.87ms. Allocated memory is still 69.2MB. Free memory was 49.2MB in the beginning and 33.5MB in the end (delta: 15.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-23 13:55:31,963 INFO L158 Benchmark]: Boogie Procedure Inliner took 89.51ms. Allocated memory was 69.2MB in the beginning and 83.9MB in the end (delta: 14.7MB). Free memory was 33.5MB in the beginning and 65.6MB in the end (delta: -32.0MB). Peak memory consumption was 7.4MB. Max. memory is 16.1GB. [2021-11-23 13:55:31,963 INFO L158 Benchmark]: Boogie Preprocessor took 54.60ms. Allocated memory is still 83.9MB. Free memory was 65.6MB in the beginning and 64.4MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 13:55:31,963 INFO L158 Benchmark]: RCFGBuilder took 385.19ms. Allocated memory is still 83.9MB. Free memory was 64.4MB in the beginning and 53.7MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 13:55:31,964 INFO L158 Benchmark]: TraceAbstraction took 11427.84ms. Allocated memory is still 83.9MB. Free memory was 53.4MB in the beginning and 32.8MB in the end (delta: 20.5MB). Peak memory consumption was 18.8MB. Max. memory is 16.1GB. [2021-11-23 13:55:31,964 INFO L158 Benchmark]: Witness Printer took 40.19ms. Allocated memory is still 83.9MB. Free memory was 32.8MB in the beginning and 30.1MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 13:55:31,966 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 69.2MB. Free memory is still 50.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 923.87ms. Allocated memory is still 69.2MB. Free memory was 49.2MB in the beginning and 33.5MB in the end (delta: 15.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 89.51ms. Allocated memory was 69.2MB in the beginning and 83.9MB in the end (delta: 14.7MB). Free memory was 33.5MB in the beginning and 65.6MB in the end (delta: -32.0MB). Peak memory consumption was 7.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 54.60ms. Allocated memory is still 83.9MB. Free memory was 65.6MB in the beginning and 64.4MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 385.19ms. Allocated memory is still 83.9MB. Free memory was 64.4MB in the beginning and 53.7MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 11427.84ms. Allocated memory is still 83.9MB. Free memory was 53.4MB in the beginning and 32.8MB in the end (delta: 20.5MB). Peak memory consumption was 18.8MB. Max. memory is 16.1GB. * Witness Printer took 40.19ms. Allocated memory is still 83.9MB. Free memory was 32.8MB in the beginning and 30.1MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 772]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 772]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 772]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 779]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 11.4s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 304 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 304 mSDsluCounter, 350 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 9 IncrementalHoareTripleChecker+Unchecked, 234 mSDsCounter, 11 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 219 IncrementalHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11 mSolverCounterUnsat, 116 mSDtfsCounter, 219 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 163 GetRequests, 92 SyntacticMatches, 4 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 7.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=5, InterpolantAutomatonStates: 53, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 45 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 7.6s InterpolantComputationTime, 76 NumberOfCodeBlocks, 76 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 136 ConstructedInterpolants, 4 QuantifiedInterpolants, 626 SizeOfPredicates, 38 NumberOfNonLiveVariables, 339 ConjunctsInSsa, 60 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-11-23 13:55:32,007 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3fc34f2-6521-40ec-9ca2-93b5b7ea7be9/bin/uautomizer-wIGwrQj20G/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: TRUE