./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/locks/test_locks_15-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40e1bf0-8c7d-4b71-bb7f-24db68eb1d59/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40e1bf0-8c7d-4b71-bb7f-24db68eb1d59/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40e1bf0-8c7d-4b71-bb7f-24db68eb1d59/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40e1bf0-8c7d-4b71-bb7f-24db68eb1d59/bin/utaipan-mTDlp9Zugs/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/locks/test_locks_15-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40e1bf0-8c7d-4b71-bb7f-24db68eb1d59/bin/utaipan-mTDlp9Zugs/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40e1bf0-8c7d-4b71-bb7f-24db68eb1d59/bin/utaipan-mTDlp9Zugs --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 04dfa849b43716e8587b0fc4953cadbe3968c4e3 ............................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40e1bf0-8c7d-4b71-bb7f-24db68eb1d59/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40e1bf0-8c7d-4b71-bb7f-24db68eb1d59/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40e1bf0-8c7d-4b71-bb7f-24db68eb1d59/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40e1bf0-8c7d-4b71-bb7f-24db68eb1d59/bin/utaipan-mTDlp9Zugs/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/locks/test_locks_15-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40e1bf0-8c7d-4b71-bb7f-24db68eb1d59/bin/utaipan-mTDlp9Zugs/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40e1bf0-8c7d-4b71-bb7f-24db68eb1d59/bin/utaipan-mTDlp9Zugs --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 04dfa849b43716e8587b0fc4953cadbe3968c4e3 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:33:37,315 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:33:37,317 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:33:37,376 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:33:37,377 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:33:37,378 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:33:37,380 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:33:37,383 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:33:37,385 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:33:37,386 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:33:37,388 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:33:37,389 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:33:37,390 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:33:37,392 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:33:37,394 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:33:37,396 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:33:37,397 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:33:37,402 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:33:37,405 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:33:37,408 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:33:37,410 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:33:37,421 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:33:37,423 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:33:37,424 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:33:37,428 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:33:37,428 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:33:37,428 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:33:37,430 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:33:37,430 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:33:37,432 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:33:37,432 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:33:37,433 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:33:37,434 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:33:37,435 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:33:37,436 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:33:37,437 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:33:37,438 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:33:37,438 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:33:37,438 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:33:37,439 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:33:37,440 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:33:37,441 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40e1bf0-8c7d-4b71-bb7f-24db68eb1d59/bin/utaipan-mTDlp9Zugs/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-10-16 02:33:37,468 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:33:37,468 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:33:37,469 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:33:37,470 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:33:37,470 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:33:37,470 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:33:37,470 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 02:33:37,470 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:33:37,471 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:33:37,471 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 02:33:37,471 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 02:33:37,471 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:33:37,472 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 02:33:37,472 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 02:33:37,472 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 02:33:37,473 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-16 02:33:37,473 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-16 02:33:37,473 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:33:37,473 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:33:37,474 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-16 02:33:37,474 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 02:33:37,474 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:33:37,474 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:33:37,475 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-16 02:33:37,475 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-16 02:33:37,475 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-16 02:33:37,475 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:33:37,475 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:33:37,476 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:33:37,476 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:33:37,476 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:33:37,476 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:33:37,477 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:33:37,477 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:33:37,477 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:33:37,477 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 02:33:37,478 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 02:33:37,478 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:33:37,478 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:33:37,478 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40e1bf0-8c7d-4b71-bb7f-24db68eb1d59/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40e1bf0-8c7d-4b71-bb7f-24db68eb1d59/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 04dfa849b43716e8587b0fc4953cadbe3968c4e3 [2021-10-16 02:33:37,748 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:33:37,784 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:33:37,787 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:33:37,789 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:33:37,790 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:33:37,791 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40e1bf0-8c7d-4b71-bb7f-24db68eb1d59/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/locks/test_locks_15-1.c [2021-10-16 02:33:37,882 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40e1bf0-8c7d-4b71-bb7f-24db68eb1d59/bin/utaipan-mTDlp9Zugs/data/10f14ee07/09b90c57dda14379910270d6b826b335/FLAGf9aa774de [2021-10-16 02:33:38,372 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:33:38,373 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40e1bf0-8c7d-4b71-bb7f-24db68eb1d59/sv-benchmarks/c/locks/test_locks_15-1.c [2021-10-16 02:33:38,382 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40e1bf0-8c7d-4b71-bb7f-24db68eb1d59/bin/utaipan-mTDlp9Zugs/data/10f14ee07/09b90c57dda14379910270d6b826b335/FLAGf9aa774de [2021-10-16 02:33:38,730 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40e1bf0-8c7d-4b71-bb7f-24db68eb1d59/bin/utaipan-mTDlp9Zugs/data/10f14ee07/09b90c57dda14379910270d6b826b335 [2021-10-16 02:33:38,733 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:33:38,734 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:33:38,736 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:33:38,736 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:33:38,744 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:33:38,744 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:33:38" (1/1) ... [2021-10-16 02:33:38,745 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cf9e5f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:33:38, skipping insertion in model container [2021-10-16 02:33:38,746 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:33:38" (1/1) ... [2021-10-16 02:33:38,753 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:33:38,779 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:33:38,964 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40e1bf0-8c7d-4b71-bb7f-24db68eb1d59/sv-benchmarks/c/locks/test_locks_15-1.c[5654,5667] [2021-10-16 02:33:38,969 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:33:38,980 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:33:39,010 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40e1bf0-8c7d-4b71-bb7f-24db68eb1d59/sv-benchmarks/c/locks/test_locks_15-1.c[5654,5667] [2021-10-16 02:33:39,012 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:33:39,026 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:33:39,027 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:33:39 WrapperNode [2021-10-16 02:33:39,027 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:33:39,028 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:33:39,029 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:33:39,029 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:33:39,042 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:33:39" (1/1) ... [2021-10-16 02:33:39,069 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:33:39" (1/1) ... [2021-10-16 02:33:39,107 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:33:39,112 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:33:39,112 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:33:39,113 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:33:39,122 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:33:39" (1/1) ... [2021-10-16 02:33:39,122 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:33:39" (1/1) ... [2021-10-16 02:33:39,139 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:33:39" (1/1) ... [2021-10-16 02:33:39,139 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:33:39" (1/1) ... [2021-10-16 02:33:39,145 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:33:39" (1/1) ... [2021-10-16 02:33:39,160 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:33:39" (1/1) ... [2021-10-16 02:33:39,162 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:33:39" (1/1) ... [2021-10-16 02:33:39,171 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:33:39,172 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:33:39,173 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:33:39,173 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:33:39,179 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:33:39" (1/1) ... [2021-10-16 02:33:39,186 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:33:39,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40e1bf0-8c7d-4b71-bb7f-24db68eb1d59/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:33:39,216 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40e1bf0-8c7d-4b71-bb7f-24db68eb1d59/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:33:39,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40e1bf0-8c7d-4b71-bb7f-24db68eb1d59/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:33:39,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:33:39,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:33:39,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-16 02:33:39,280 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:33:40,189 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:33:40,190 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-16 02:33:40,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:33:40 BoogieIcfgContainer [2021-10-16 02:33:40,194 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:33:40,199 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:33:40,200 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:33:40,203 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:33:40,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:33:38" (1/3) ... [2021-10-16 02:33:40,206 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d0ebc6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:33:40, skipping insertion in model container [2021-10-16 02:33:40,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:33:39" (2/3) ... [2021-10-16 02:33:40,206 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d0ebc6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:33:40, skipping insertion in model container [2021-10-16 02:33:40,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:33:40" (3/3) ... [2021-10-16 02:33:40,208 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_15-1.c [2021-10-16 02:33:40,220 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:33:40,220 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-16 02:33:40,271 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:33:40,277 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, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-16 02:33:40,278 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-16 02:33:40,294 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 38 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:40,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-16 02:33:40,300 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:33:40,301 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-16 02:33:40,302 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-16 02:33:40,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:33:40,308 INFO L82 PathProgramCache]: Analyzing trace with hash 9646674, now seen corresponding path program 1 times [2021-10-16 02:33:40,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:33:40,319 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242331564] [2021-10-16 02:33:40,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:33:40,320 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:33:40,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:33:40,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:33:40,477 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:33:40,477 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242331564] [2021-10-16 02:33:40,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242331564] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:33:40,478 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:33:40,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 02:33:40,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7610302] [2021-10-16 02:33:40,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-16 02:33:40,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:33:40,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-16 02:33:40,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 02:33:40,504 INFO L87 Difference]: Start difference. First operand has 39 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 38 states have internal predecessors, (70), 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 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:40,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:33:40,516 INFO L93 Difference]: Finished difference Result 39 states and 68 transitions. [2021-10-16 02:33:40,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-16 02:33:40,517 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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 4 [2021-10-16 02:33:40,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:33:40,527 INFO L225 Difference]: With dead ends: 39 [2021-10-16 02:33:40,527 INFO L226 Difference]: Without dead ends: 38 [2021-10-16 02:33:40,529 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 02:33:40,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-10-16 02:33:40,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2021-10-16 02:33:40,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 36 states have (on average 1.8611111111111112) internal successors, (67), 37 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:40,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 67 transitions. [2021-10-16 02:33:40,564 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 67 transitions. Word has length 4 [2021-10-16 02:33:40,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:33:40,564 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 67 transitions. [2021-10-16 02:33:40,565 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:40,565 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 67 transitions. [2021-10-16 02:33:40,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-16 02:33:40,565 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:33:40,566 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-16 02:33:40,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-16 02:33:40,566 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-16 02:33:40,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:33:40,568 INFO L82 PathProgramCache]: Analyzing trace with hash 290335554, now seen corresponding path program 1 times [2021-10-16 02:33:40,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:33:40,568 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79589672] [2021-10-16 02:33:40,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:33:40,569 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:33:40,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:33:40,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:33:40,617 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:33:40,617 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79589672] [2021-10-16 02:33:40,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79589672] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:33:40,618 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:33:40,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-16 02:33:40,618 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368861719] [2021-10-16 02:33:40,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:33:40,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:33:40,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:33:40,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:33:40,621 INFO L87 Difference]: Start difference. First operand 38 states and 67 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:40,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:33:40,628 INFO L93 Difference]: Finished difference Result 37 states and 66 transitions. [2021-10-16 02:33:40,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:33:40,628 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2021-10-16 02:33:40,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:33:40,629 INFO L225 Difference]: With dead ends: 37 [2021-10-16 02:33:40,630 INFO L226 Difference]: Without dead ends: 35 [2021-10-16 02:33:40,630 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:33:40,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-10-16 02:33:40,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2021-10-16 02:33:40,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.8823529411764706) internal successors, (64), 34 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:40,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 64 transitions. [2021-10-16 02:33:40,637 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 64 transitions. Word has length 5 [2021-10-16 02:33:40,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:33:40,637 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 64 transitions. [2021-10-16 02:33:40,638 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:40,638 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 64 transitions. [2021-10-16 02:33:40,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-16 02:33:40,638 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:33:40,639 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-16 02:33:40,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-16 02:33:40,639 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-16 02:33:40,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:33:40,640 INFO L82 PathProgramCache]: Analyzing trace with hash 419277408, now seen corresponding path program 1 times [2021-10-16 02:33:40,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:33:40,641 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100156507] [2021-10-16 02:33:40,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:33:40,641 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:33:40,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 02:33:40,681 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-16 02:33:40,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 02:33:40,761 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-16 02:33:40,762 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-16 02:33:40,763 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK [2021-10-16 02:33:40,765 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK [2021-10-16 02:33:40,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-16 02:33:40,771 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 02:33:40,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 02:33:40 BoogieIcfgContainer [2021-10-16 02:33:40,797 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 02:33:40,797 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 02:33:40,797 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 02:33:40,798 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 02:33:40,798 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:33:40" (3/4) ... [2021-10-16 02:33:40,801 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-16 02:33:40,801 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 02:33:40,803 INFO L168 Benchmark]: Toolchain (without parser) took 2068.24 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 55.9 MB in the beginning and 80.8 MB in the end (delta: -24.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:33:40,804 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 88.1 MB. Free memory was 45.0 MB in the beginning and 45.0 MB in the end (delta: 38.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:33:40,805 INFO L168 Benchmark]: CACSL2BoogieTranslator took 291.99 ms. Allocated memory is still 88.1 MB. Free memory was 55.7 MB in the beginning and 64.2 MB in the end (delta: -8.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-16 02:33:40,805 INFO L168 Benchmark]: Boogie Procedure Inliner took 82.62 ms. Allocated memory is still 88.1 MB. Free memory was 64.2 MB in the beginning and 62.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:33:40,806 INFO L168 Benchmark]: Boogie Preprocessor took 59.90 ms. Allocated memory is still 88.1 MB. Free memory was 62.1 MB in the beginning and 60.8 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:33:40,807 INFO L168 Benchmark]: RCFGBuilder took 1022.26 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 60.8 MB in the beginning and 80.3 MB in the end (delta: -19.5 MB). Peak memory consumption was 27.8 MB. Max. memory is 16.1 GB. [2021-10-16 02:33:40,807 INFO L168 Benchmark]: TraceAbstraction took 597.45 ms. Allocated memory is still 107.0 MB. Free memory was 79.8 MB in the beginning and 81.4 MB in the end (delta: -1.5 MB). Peak memory consumption was 32.9 MB. Max. memory is 16.1 GB. [2021-10-16 02:33:40,808 INFO L168 Benchmark]: Witness Printer took 4.24 ms. Allocated memory is still 107.0 MB. Free memory was 81.4 MB in the beginning and 80.8 MB in the end (delta: 559.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:33:40,811 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 88.1 MB. Free memory was 45.0 MB in the beginning and 45.0 MB in the end (delta: 38.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 291.99 ms. Allocated memory is still 88.1 MB. Free memory was 55.7 MB in the beginning and 64.2 MB in the end (delta: -8.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 82.62 ms. Allocated memory is still 88.1 MB. Free memory was 64.2 MB in the beginning and 62.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 59.90 ms. Allocated memory is still 88.1 MB. Free memory was 62.1 MB in the beginning and 60.8 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 1022.26 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 60.8 MB in the beginning and 80.3 MB in the end (delta: -19.5 MB). Peak memory consumption was 27.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 597.45 ms. Allocated memory is still 107.0 MB. Free memory was 79.8 MB in the beginning and 81.4 MB in the end (delta: -1.5 MB). Peak memory consumption was 32.9 MB. Max. memory is 16.1 GB. * Witness Printer took 4.24 ms. Allocated memory is still 107.0 MB. Free memory was 81.4 MB in the beginning and 80.8 MB in the end (delta: 559.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 233]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 233. Possible FailurePath: [L8] int p1 = __VERIFIER_nondet_int(); [L9] int lk1; [L11] int p2 = __VERIFIER_nondet_int(); [L12] int lk2; [L14] int p3 = __VERIFIER_nondet_int(); [L15] int lk3; [L17] int p4 = __VERIFIER_nondet_int(); [L18] int lk4; [L20] int p5 = __VERIFIER_nondet_int(); [L21] int lk5; [L23] int p6 = __VERIFIER_nondet_int(); [L24] int lk6; [L26] int p7 = __VERIFIER_nondet_int(); [L27] int lk7; [L29] int p8 = __VERIFIER_nondet_int(); [L30] int lk8; [L32] int p9 = __VERIFIER_nondet_int(); [L33] int lk9; [L35] int p10 = __VERIFIER_nondet_int(); [L36] int lk10; [L38] int p11 = __VERIFIER_nondet_int(); [L39] int lk11; [L41] int p12 = __VERIFIER_nondet_int(); [L42] int lk12; [L44] int p13 = __VERIFIER_nondet_int(); [L45] int lk13; [L47] int p14 = __VERIFIER_nondet_int(); [L48] int lk14; [L50] int p15 = __VERIFIER_nondet_int(); [L51] int lk15; [L54] int cond; [L56] COND TRUE 1 [L57] cond = __VERIFIER_nondet_int() [L58] COND FALSE !(cond == 0) [L61] lk1 = 0 [L63] lk2 = 0 [L65] lk3 = 0 [L67] lk4 = 0 [L69] lk5 = 0 [L71] lk6 = 0 [L73] lk7 = 0 [L75] lk8 = 0 [L77] lk9 = 0 [L79] lk10 = 0 [L81] lk11 = 0 [L83] lk12 = 0 [L85] lk13 = 0 [L87] lk14 = 0 [L89] lk15 = 0 [L93] COND FALSE !(p1 != 0) [L97] COND FALSE !(p2 != 0) [L101] COND FALSE !(p3 != 0) [L105] COND TRUE p4 != 0 [L106] lk4 = 1 [L109] COND TRUE p5 != 0 [L110] lk5 = 1 [L113] COND TRUE p6 != 0 [L114] lk6 = 1 [L117] COND FALSE !(p7 != 0) [L121] COND TRUE p8 != 0 [L122] lk8 = 1 [L125] COND FALSE !(p9 != 0) [L129] COND TRUE p10 != 0 [L130] lk10 = 1 [L133] COND TRUE p11 != 0 [L134] lk11 = 1 [L137] COND FALSE !(p12 != 0) [L141] COND FALSE !(p13 != 0) [L145] COND FALSE !(p14 != 0) [L149] COND TRUE p15 != 0 [L150] lk15 = 1 [L155] COND FALSE !(p1 != 0) [L160] COND FALSE !(p2 != 0) [L233] reach_error() - UnprovableResult [Line: 6]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 39 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 501.6ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 11.8ms, AutomataDifference: 52.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 11.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 134 SDtfs, 62 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=0, InterpolantAutomatonStates: 5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 25.9ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 10.8ms SsaConstructionTime, 82.1ms SatisfiabilityAnalysisTime, 81.0ms InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 15 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-16 02:33:40,857 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40e1bf0-8c7d-4b71-bb7f-24db68eb1d59/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:33:43,548 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:33:43,550 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:33:43,583 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:33:43,583 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:33:43,585 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:33:43,587 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:33:43,590 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:33:43,592 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:33:43,594 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:33:43,595 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:33:43,597 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:33:43,598 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:33:43,599 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:33:43,601 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:33:43,603 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:33:43,604 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:33:43,606 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:33:43,610 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:33:43,615 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:33:43,621 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:33:43,623 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:33:43,627 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:33:43,630 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:33:43,639 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:33:43,644 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:33:43,645 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:33:43,649 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:33:43,650 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:33:43,652 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:33:43,652 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:33:43,654 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:33:43,656 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:33:43,658 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:33:43,659 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:33:43,660 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:33:43,661 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:33:43,661 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:33:43,662 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:33:43,664 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:33:43,665 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:33:43,666 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40e1bf0-8c7d-4b71-bb7f-24db68eb1d59/bin/utaipan-mTDlp9Zugs/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-10-16 02:33:43,723 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:33:43,724 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:33:43,726 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:33:43,726 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:33:43,726 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:33:43,727 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:33:43,727 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:33:43,728 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:33:43,728 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:33:43,730 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-16 02:33:43,731 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-16 02:33:43,732 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:33:43,732 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:33:43,732 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-16 02:33:43,733 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 02:33:43,733 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:33:43,733 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:33:43,734 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-16 02:33:43,734 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-16 02:33:43,734 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-16 02:33:43,735 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:33:43,735 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:33:43,735 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-16 02:33:43,736 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-16 02:33:43,736 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:33:43,736 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:33:43,737 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:33:43,737 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-16 02:33:43,737 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:33:43,738 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:33:43,738 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:33:43,738 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:33:43,739 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-16 02:33:43,739 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-16 02:33:43,740 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:33:43,740 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:33:43,740 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_d40e1bf0-8c7d-4b71-bb7f-24db68eb1d59/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40e1bf0-8c7d-4b71-bb7f-24db68eb1d59/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 04dfa849b43716e8587b0fc4953cadbe3968c4e3 [2021-10-16 02:33:44,218 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:33:44,252 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:33:44,256 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:33:44,257 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:33:44,259 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:33:44,260 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40e1bf0-8c7d-4b71-bb7f-24db68eb1d59/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/locks/test_locks_15-1.c [2021-10-16 02:33:44,338 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40e1bf0-8c7d-4b71-bb7f-24db68eb1d59/bin/utaipan-mTDlp9Zugs/data/3586c7454/658c21dcc55a4fb0888d8152fc3ef466/FLAGe6df0c5f6 [2021-10-16 02:33:44,937 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:33:44,938 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40e1bf0-8c7d-4b71-bb7f-24db68eb1d59/sv-benchmarks/c/locks/test_locks_15-1.c [2021-10-16 02:33:44,948 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40e1bf0-8c7d-4b71-bb7f-24db68eb1d59/bin/utaipan-mTDlp9Zugs/data/3586c7454/658c21dcc55a4fb0888d8152fc3ef466/FLAGe6df0c5f6 [2021-10-16 02:33:45,283 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40e1bf0-8c7d-4b71-bb7f-24db68eb1d59/bin/utaipan-mTDlp9Zugs/data/3586c7454/658c21dcc55a4fb0888d8152fc3ef466 [2021-10-16 02:33:45,287 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:33:45,290 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:33:45,294 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:33:45,295 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:33:45,299 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:33:45,300 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:33:45" (1/1) ... [2021-10-16 02:33:45,301 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c13af8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:33:45, skipping insertion in model container [2021-10-16 02:33:45,302 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:33:45" (1/1) ... [2021-10-16 02:33:45,311 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:33:45,354 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:33:45,603 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40e1bf0-8c7d-4b71-bb7f-24db68eb1d59/sv-benchmarks/c/locks/test_locks_15-1.c[5654,5667] [2021-10-16 02:33:45,607 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:33:45,620 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:33:45,711 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40e1bf0-8c7d-4b71-bb7f-24db68eb1d59/sv-benchmarks/c/locks/test_locks_15-1.c[5654,5667] [2021-10-16 02:33:45,729 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:33:45,748 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:33:45,748 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:33:45 WrapperNode [2021-10-16 02:33:45,748 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:33:45,750 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:33:45,751 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:33:45,751 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:33:45,759 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:33:45" (1/1) ... [2021-10-16 02:33:45,780 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:33:45" (1/1) ... [2021-10-16 02:33:45,821 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:33:45,825 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:33:45,825 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:33:45,825 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:33:45,833 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:33:45" (1/1) ... [2021-10-16 02:33:45,834 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:33:45" (1/1) ... [2021-10-16 02:33:45,838 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:33:45" (1/1) ... [2021-10-16 02:33:45,838 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:33:45" (1/1) ... [2021-10-16 02:33:45,856 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:33:45" (1/1) ... [2021-10-16 02:33:45,870 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:33:45" (1/1) ... [2021-10-16 02:33:45,872 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:33:45" (1/1) ... [2021-10-16 02:33:45,876 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:33:45,877 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:33:45,877 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:33:45,877 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:33:45,878 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:33:45" (1/1) ... [2021-10-16 02:33:45,885 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:33:45,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40e1bf0-8c7d-4b71-bb7f-24db68eb1d59/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:33:45,912 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40e1bf0-8c7d-4b71-bb7f-24db68eb1d59/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:33:45,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40e1bf0-8c7d-4b71-bb7f-24db68eb1d59/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:33:45,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:33:45,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:33:45,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-16 02:33:45,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:33:46,394 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:33:46,395 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-16 02:33:46,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:33:46 BoogieIcfgContainer [2021-10-16 02:33:46,397 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:33:46,399 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:33:46,399 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:33:46,419 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:33:46,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:33:45" (1/3) ... [2021-10-16 02:33:46,420 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7db7b692 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:33:46, skipping insertion in model container [2021-10-16 02:33:46,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:33:45" (2/3) ... [2021-10-16 02:33:46,421 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7db7b692 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:33:46, skipping insertion in model container [2021-10-16 02:33:46,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:33:46" (3/3) ... [2021-10-16 02:33:46,422 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_15-1.c [2021-10-16 02:33:46,429 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:33:46,429 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-16 02:33:46,512 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:33:46,540 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, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-16 02:33:46,541 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-16 02:33:46,565 INFO L276 IsEmpty]: Start isEmpty. Operand has 56 states, 53 states have (on average 1.9433962264150944) internal successors, (103), 55 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:46,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-16 02:33:46,572 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:33:46,572 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-16 02:33:46,573 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-16 02:33:46,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:33:46,579 INFO L82 PathProgramCache]: Analyzing trace with hash 28959891, now seen corresponding path program 1 times [2021-10-16 02:33:46,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:33:46,593 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [78710026] [2021-10-16 02:33:46,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:33:46,595 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:33:46,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40e1bf0-8c7d-4b71-bb7f-24db68eb1d59/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:33:46,599 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40e1bf0-8c7d-4b71-bb7f-24db68eb1d59/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:33:46,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40e1bf0-8c7d-4b71-bb7f-24db68eb1d59/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-16 02:33:46,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:33:46,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-16 02:33:46,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:33:46,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:33:46,731 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:33:46,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:33:46,761 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:33:46,762 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [78710026] [2021-10-16 02:33:46,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [78710026] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:33:46,763 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:33:46,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-16 02:33:46,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697581562] [2021-10-16 02:33:46,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-16 02:33:46,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:33:46,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-16 02:33:46,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 02:33:46,803 INFO L87 Difference]: Start difference. First operand has 56 states, 53 states have (on average 1.9433962264150944) internal successors, (103), 55 states have internal predecessors, (103), 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 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:46,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:33:46,829 INFO L93 Difference]: Finished difference Result 56 states and 100 transitions. [2021-10-16 02:33:46,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-16 02:33:46,833 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2021-10-16 02:33:46,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:33:46,845 INFO L225 Difference]: With dead ends: 56 [2021-10-16 02:33:46,845 INFO L226 Difference]: Without dead ends: 54 [2021-10-16 02:33:46,847 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 02:33:46,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-10-16 02:33:46,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2021-10-16 02:33:46,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 52 states have (on average 1.8846153846153846) internal successors, (98), 53 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:46,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 98 transitions. [2021-10-16 02:33:46,907 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 98 transitions. Word has length 5 [2021-10-16 02:33:46,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:33:46,908 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 98 transitions. [2021-10-16 02:33:46,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:46,908 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 98 transitions. [2021-10-16 02:33:46,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-16 02:33:46,909 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:33:46,909 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-16 02:33:46,934 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40e1bf0-8c7d-4b71-bb7f-24db68eb1d59/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-16 02:33:47,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40e1bf0-8c7d-4b71-bb7f-24db68eb1d59/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:33:47,135 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-16 02:33:47,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:33:47,142 INFO L82 PathProgramCache]: Analyzing trace with hash 889700683, now seen corresponding path program 1 times [2021-10-16 02:33:47,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:33:47,143 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2062502068] [2021-10-16 02:33:47,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:33:47,143 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:33:47,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40e1bf0-8c7d-4b71-bb7f-24db68eb1d59/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:33:47,147 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40e1bf0-8c7d-4b71-bb7f-24db68eb1d59/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:33:47,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40e1bf0-8c7d-4b71-bb7f-24db68eb1d59/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-16 02:33:47,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:33:47,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:33:47,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:33:47,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:33:47,293 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:33:47,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:33:47,336 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:33:47,337 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2062502068] [2021-10-16 02:33:47,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2062502068] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:33:47,337 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:33:47,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-16 02:33:47,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88478199] [2021-10-16 02:33:47,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:33:47,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:33:47,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:33:47,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:33:47,341 INFO L87 Difference]: Start difference. First operand 54 states and 98 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:47,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:33:47,365 INFO L93 Difference]: Finished difference Result 53 states and 97 transitions. [2021-10-16 02:33:47,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:33:47,368 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2021-10-16 02:33:47,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:33:47,370 INFO L225 Difference]: With dead ends: 53 [2021-10-16 02:33:47,371 INFO L226 Difference]: Without dead ends: 51 [2021-10-16 02:33:47,372 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:33:47,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-10-16 02:33:47,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-10-16 02:33:47,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.9) internal successors, (95), 50 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:47,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 95 transitions. [2021-10-16 02:33:47,387 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 95 transitions. Word has length 6 [2021-10-16 02:33:47,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:33:47,387 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 95 transitions. [2021-10-16 02:33:47,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:47,388 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 95 transitions. [2021-10-16 02:33:47,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-16 02:33:47,389 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:33:47,389 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:33:47,407 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40e1bf0-8c7d-4b71-bb7f-24db68eb1d59/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-16 02:33:47,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40e1bf0-8c7d-4b71-bb7f-24db68eb1d59/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:33:47,602 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-16 02:33:47,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:33:47,603 INFO L82 PathProgramCache]: Analyzing trace with hash -1188553263, now seen corresponding path program 1 times [2021-10-16 02:33:47,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:33:47,604 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [476026324] [2021-10-16 02:33:47,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:33:47,604 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:33:47,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40e1bf0-8c7d-4b71-bb7f-24db68eb1d59/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:33:47,605 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40e1bf0-8c7d-4b71-bb7f-24db68eb1d59/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:33:47,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40e1bf0-8c7d-4b71-bb7f-24db68eb1d59/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-16 02:33:47,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:33:47,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:33:47,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:33:47,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:33:47,828 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:33:47,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:33:47,949 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:33:47,950 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [476026324] [2021-10-16 02:33:47,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [476026324] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:33:47,950 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:33:47,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:33:47,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564123935] [2021-10-16 02:33:47,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:33:47,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:33:47,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:33:47,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:33:47,955 INFO L87 Difference]: Start difference. First operand 51 states and 95 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 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) [2021-10-16 02:33:47,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:33:47,998 INFO L93 Difference]: Finished difference Result 99 states and 184 transitions. [2021-10-16 02:33:47,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:33:47,998 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 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) Word has length 22 [2021-10-16 02:33:47,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:33:48,004 INFO L225 Difference]: With dead ends: 99 [2021-10-16 02:33:48,004 INFO L226 Difference]: Without dead ends: 99 [2021-10-16 02:33:48,005 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:33:48,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-10-16 02:33:48,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 97. [2021-10-16 02:33:48,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 96 states have (on average 1.90625) internal successors, (183), 96 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:48,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 183 transitions. [2021-10-16 02:33:48,029 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 183 transitions. Word has length 22 [2021-10-16 02:33:48,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:33:48,030 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 183 transitions. [2021-10-16 02:33:48,030 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 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) [2021-10-16 02:33:48,031 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 183 transitions. [2021-10-16 02:33:48,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-16 02:33:48,032 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:33:48,032 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:33:48,050 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40e1bf0-8c7d-4b71-bb7f-24db68eb1d59/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-16 02:33:48,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40e1bf0-8c7d-4b71-bb7f-24db68eb1d59/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:33:48,244 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-16 02:33:48,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:33:48,245 INFO L82 PathProgramCache]: Analyzing trace with hash -1188560455, now seen corresponding path program 1 times [2021-10-16 02:33:48,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:33:48,246 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1785374420] [2021-10-16 02:33:48,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:33:48,246 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:33:48,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40e1bf0-8c7d-4b71-bb7f-24db68eb1d59/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:33:48,248 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40e1bf0-8c7d-4b71-bb7f-24db68eb1d59/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:33:48,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40e1bf0-8c7d-4b71-bb7f-24db68eb1d59/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-16 02:33:48,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:33:48,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:33:48,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:33:48,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:33:48,430 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:33:48,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:33:48,529 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:33:48,530 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1785374420] [2021-10-16 02:33:48,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1785374420] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:33:48,530 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:33:48,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:33:48,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024783353] [2021-10-16 02:33:48,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:33:48,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:33:48,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:33:48,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:33:48,532 INFO L87 Difference]: Start difference. First operand 97 states and 183 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 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) [2021-10-16 02:33:48,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:33:48,548 INFO L93 Difference]: Finished difference Result 98 states and 184 transitions. [2021-10-16 02:33:48,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:33:48,549 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 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) Word has length 22 [2021-10-16 02:33:48,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:33:48,551 INFO L225 Difference]: With dead ends: 98 [2021-10-16 02:33:48,551 INFO L226 Difference]: Without dead ends: 98 [2021-10-16 02:33:48,551 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:33:48,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-10-16 02:33:48,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2021-10-16 02:33:48,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 97 states have (on average 1.8969072164948453) internal successors, (184), 97 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:48,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 184 transitions. [2021-10-16 02:33:48,560 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 184 transitions. Word has length 22 [2021-10-16 02:33:48,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:33:48,561 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 184 transitions. [2021-10-16 02:33:48,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 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) [2021-10-16 02:33:48,562 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 184 transitions. [2021-10-16 02:33:48,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-16 02:33:48,563 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:33:48,563 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:33:48,582 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40e1bf0-8c7d-4b71-bb7f-24db68eb1d59/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-16 02:33:48,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40e1bf0-8c7d-4b71-bb7f-24db68eb1d59/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:33:48,775 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-16 02:33:48,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:33:48,775 INFO L82 PathProgramCache]: Analyzing trace with hash 1112269327, now seen corresponding path program 1 times [2021-10-16 02:33:48,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:33:48,776 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [488587754] [2021-10-16 02:33:48,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:33:48,776 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:33:48,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40e1bf0-8c7d-4b71-bb7f-24db68eb1d59/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:33:48,777 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40e1bf0-8c7d-4b71-bb7f-24db68eb1d59/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:33:48,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40e1bf0-8c7d-4b71-bb7f-24db68eb1d59/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-16 02:33:48,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:33:48,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:33:48,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:33:48,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:33:48,962 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:33:49,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:33:49,047 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:33:49,047 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [488587754] [2021-10-16 02:33:49,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [488587754] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:33:49,048 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:33:49,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:33:49,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758415966] [2021-10-16 02:33:49,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:33:49,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:33:49,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:33:49,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:33:49,050 INFO L87 Difference]: Start difference. First operand 98 states and 184 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 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) [2021-10-16 02:33:49,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:33:49,061 INFO L93 Difference]: Finished difference Result 137 states and 251 transitions. [2021-10-16 02:33:49,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:33:49,061 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 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) Word has length 22 [2021-10-16 02:33:49,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:33:49,063 INFO L225 Difference]: With dead ends: 137 [2021-10-16 02:33:49,063 INFO L226 Difference]: Without dead ends: 137 [2021-10-16 02:33:49,063 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:33:49,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-10-16 02:33:49,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 135. [2021-10-16 02:33:49,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 134 states have (on average 1.8656716417910448) internal successors, (250), 134 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:49,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 250 transitions. [2021-10-16 02:33:49,072 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 250 transitions. Word has length 22 [2021-10-16 02:33:49,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:33:49,072 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 250 transitions. [2021-10-16 02:33:49,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 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) [2021-10-16 02:33:49,072 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 250 transitions. [2021-10-16 02:33:49,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-16 02:33:49,074 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:33:49,074 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:33:49,090 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40e1bf0-8c7d-4b71-bb7f-24db68eb1d59/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-16 02:33:49,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40e1bf0-8c7d-4b71-bb7f-24db68eb1d59/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:33:49,275 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-16 02:33:49,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:33:49,275 INFO L82 PathProgramCache]: Analyzing trace with hash 1112262135, now seen corresponding path program 1 times [2021-10-16 02:33:49,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:33:49,276 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2030686619] [2021-10-16 02:33:49,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:33:49,276 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:33:49,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40e1bf0-8c7d-4b71-bb7f-24db68eb1d59/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:33:49,277 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40e1bf0-8c7d-4b71-bb7f-24db68eb1d59/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:33:49,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40e1bf0-8c7d-4b71-bb7f-24db68eb1d59/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-16 02:33:49,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:33:49,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:33:49,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:33:49,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:33:49,433 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:33:49,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:33:49,497 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:33:49,499 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2030686619] [2021-10-16 02:33:49,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2030686619] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:33:49,500 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:33:49,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:33:49,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592880860] [2021-10-16 02:33:49,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:33:49,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:33:49,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:33:49,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:33:49,503 INFO L87 Difference]: Start difference. First operand 135 states and 250 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 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) [2021-10-16 02:33:49,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:33:49,517 INFO L93 Difference]: Finished difference Result 135 states and 244 transitions. [2021-10-16 02:33:49,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:33:49,518 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 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) Word has length 22 [2021-10-16 02:33:49,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:33:49,520 INFO L225 Difference]: With dead ends: 135 [2021-10-16 02:33:49,520 INFO L226 Difference]: Without dead ends: 135 [2021-10-16 02:33:49,521 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:33:49,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-10-16 02:33:49,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 133. [2021-10-16 02:33:49,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 132 states have (on average 1.8409090909090908) internal successors, (243), 132 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:33:49,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 243 transitions. [2021-10-16 02:33:49,551 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 243 transitions. Word has length 22 [2021-10-16 02:33:49,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:33:49,551 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 243 transitions. [2021-10-16 02:33:49,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 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) [2021-10-16 02:33:49,552 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 243 transitions. [2021-10-16 02:33:49,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-16 02:33:49,554 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:33:49,554 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:33:49,570 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40e1bf0-8c7d-4b71-bb7f-24db68eb1d59/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-16 02:33:49,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40e1bf0-8c7d-4b71-bb7f-24db68eb1d59/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:33:49,766 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-16 02:33:49,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:33:49,767 INFO L82 PathProgramCache]: Analyzing trace with hash -476078575, now seen corresponding path program 1 times [2021-10-16 02:33:49,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:33:49,767 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1060644539] [2021-10-16 02:33:49,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:33:49,767 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:33:49,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40e1bf0-8c7d-4b71-bb7f-24db68eb1d59/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:33:49,768 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40e1bf0-8c7d-4b71-bb7f-24db68eb1d59/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:33:49,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40e1bf0-8c7d-4b71-bb7f-24db68eb1d59/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-16 02:33:49,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 02:33:49,885 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-16 02:33:49,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 02:33:49,961 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-16 02:33:49,962 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-16 02:33:49,963 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK [2021-10-16 02:33:49,965 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK [2021-10-16 02:33:49,985 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40e1bf0-8c7d-4b71-bb7f-24db68eb1d59/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-16 02:33:50,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40e1bf0-8c7d-4b71-bb7f-24db68eb1d59/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:33:50,183 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 02:33:50,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 02:33:50 BoogieIcfgContainer [2021-10-16 02:33:50,223 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 02:33:50,223 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 02:33:50,223 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 02:33:50,223 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 02:33:50,224 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:33:46" (3/4) ... [2021-10-16 02:33:50,227 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-16 02:33:50,227 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 02:33:50,229 INFO L168 Benchmark]: Toolchain (without parser) took 4938.57 ms. Allocated memory was 56.6 MB in the beginning and 79.7 MB in the end (delta: 23.1 MB). Free memory was 34.8 MB in the beginning and 34.1 MB in the end (delta: 697.1 kB). Peak memory consumption was 23.2 MB. Max. memory is 16.1 GB. [2021-10-16 02:33:50,230 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 56.6 MB. Free memory is still 37.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:33:50,230 INFO L168 Benchmark]: CACSL2BoogieTranslator took 454.65 ms. Allocated memory is still 56.6 MB. Free memory was 34.6 MB in the beginning and 39.1 MB in the end (delta: -4.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-16 02:33:50,231 INFO L168 Benchmark]: Boogie Procedure Inliner took 73.92 ms. Allocated memory is still 56.6 MB. Free memory was 38.9 MB in the beginning and 37.2 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:33:50,232 INFO L168 Benchmark]: Boogie Preprocessor took 51.26 ms. Allocated memory is still 56.6 MB. Free memory was 37.2 MB in the beginning and 35.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:33:50,232 INFO L168 Benchmark]: RCFGBuilder took 520.44 ms. Allocated memory was 56.6 MB in the beginning and 79.7 MB in the end (delta: 23.1 MB). Free memory was 35.6 MB in the beginning and 59.6 MB in the end (delta: -23.9 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-16 02:33:50,233 INFO L168 Benchmark]: TraceAbstraction took 3823.52 ms. Allocated memory is still 79.7 MB. Free memory was 58.9 MB in the beginning and 34.7 MB in the end (delta: 24.2 MB). Peak memory consumption was 24.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:33:50,233 INFO L168 Benchmark]: Witness Printer took 4.15 ms. Allocated memory is still 79.7 MB. Free memory was 34.7 MB in the beginning and 34.1 MB in the end (delta: 547.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:33:50,237 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 56.6 MB. Free memory is still 37.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 454.65 ms. Allocated memory is still 56.6 MB. Free memory was 34.6 MB in the beginning and 39.1 MB in the end (delta: -4.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 73.92 ms. Allocated memory is still 56.6 MB. Free memory was 38.9 MB in the beginning and 37.2 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 51.26 ms. Allocated memory is still 56.6 MB. Free memory was 37.2 MB in the beginning and 35.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 520.44 ms. Allocated memory was 56.6 MB in the beginning and 79.7 MB in the end (delta: 23.1 MB). Free memory was 35.6 MB in the beginning and 59.6 MB in the end (delta: -23.9 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3823.52 ms. Allocated memory is still 79.7 MB. Free memory was 58.9 MB in the beginning and 34.7 MB in the end (delta: 24.2 MB). Peak memory consumption was 24.1 MB. Max. memory is 16.1 GB. * Witness Printer took 4.15 ms. Allocated memory is still 79.7 MB. Free memory was 34.7 MB in the beginning and 34.1 MB in the end (delta: 547.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 233]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 233. Possible FailurePath: [L8] int p1 = __VERIFIER_nondet_int(); [L9] int lk1; [L11] int p2 = __VERIFIER_nondet_int(); [L12] int lk2; [L14] int p3 = __VERIFIER_nondet_int(); [L15] int lk3; [L17] int p4 = __VERIFIER_nondet_int(); [L18] int lk4; [L20] int p5 = __VERIFIER_nondet_int(); [L21] int lk5; [L23] int p6 = __VERIFIER_nondet_int(); [L24] int lk6; [L26] int p7 = __VERIFIER_nondet_int(); [L27] int lk7; [L29] int p8 = __VERIFIER_nondet_int(); [L30] int lk8; [L32] int p9 = __VERIFIER_nondet_int(); [L33] int lk9; [L35] int p10 = __VERIFIER_nondet_int(); [L36] int lk10; [L38] int p11 = __VERIFIER_nondet_int(); [L39] int lk11; [L41] int p12 = __VERIFIER_nondet_int(); [L42] int lk12; [L44] int p13 = __VERIFIER_nondet_int(); [L45] int lk13; [L47] int p14 = __VERIFIER_nondet_int(); [L48] int lk14; [L50] int p15 = __VERIFIER_nondet_int(); [L51] int lk15; [L54] int cond; [L56] COND TRUE 1 [L57] cond = __VERIFIER_nondet_int() [L58] COND FALSE !(cond == 0) [L61] lk1 = 0 [L63] lk2 = 0 [L65] lk3 = 0 [L67] lk4 = 0 [L69] lk5 = 0 [L71] lk6 = 0 [L73] lk7 = 0 [L75] lk8 = 0 [L77] lk9 = 0 [L79] lk10 = 0 [L81] lk11 = 0 [L83] lk12 = 0 [L85] lk13 = 0 [L87] lk14 = 0 [L89] lk15 = 0 [L93] COND FALSE !(p1 != 0) [L97] COND FALSE !(p2 != 0) [L101] COND FALSE !(p3 != 0) [L105] COND TRUE p4 != 0 [L106] lk4 = 1 [L109] COND TRUE p5 != 0 [L110] lk5 = 1 [L113] COND TRUE p6 != 0 [L114] lk6 = 1 [L117] COND TRUE p7 != 0 [L118] lk7 = 1 [L121] COND TRUE p8 != 0 [L122] lk8 = 1 [L125] COND TRUE p9 != 0 [L126] lk9 = 1 [L129] COND TRUE p10 != 0 [L130] lk10 = 1 [L133] COND FALSE !(p11 != 0) [L137] COND TRUE p12 != 0 [L138] lk12 = 1 [L141] COND TRUE p13 != 0 [L142] lk13 = 1 [L145] COND TRUE p14 != 0 [L146] lk14 = 1 [L149] COND TRUE p15 != 0 [L150] lk15 = 1 [L155] COND FALSE !(p1 != 0) [L160] COND FALSE !(p2 != 0) [L233] reach_error() - UnprovableResult [Line: 6]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 56 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 3671.7ms, OverallIterations: 7, TraceHistogramMax: 1, EmptinessCheckTime: 19.9ms, AutomataDifference: 212.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 18.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 664 SDtfs, 332 SDslu, 303 SDs, 0 SdLazy, 21 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 38.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 186 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=135occurred in iteration=5, InterpolantAutomatonStates: 17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 127.2ms AutomataMinimizationTime, 6 MinimizatonAttempts, 6 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 88.3ms SsaConstructionTime, 141.2ms SatisfiabilityAnalysisTime, 972.5ms InterpolantComputationTime, 121 NumberOfCodeBlocks, 121 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 186 ConstructedInterpolants, 0 QuantifiedInterpolants, 506 SizeOfPredicates, 0 NumberOfNonLiveVariables, 329 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-16 02:33:50,313 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d40e1bf0-8c7d-4b71-bb7f-24db68eb1d59/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...