./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/locks/test_locks_14-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de18c1-b617-466b-9dbd-d7a2dfe40f55/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de18c1-b617-466b-9dbd-d7a2dfe40f55/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de18c1-b617-466b-9dbd-d7a2dfe40f55/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de18c1-b617-466b-9dbd-d7a2dfe40f55/bin/utaipan-vmNK8stdcF/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/locks/test_locks_14-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de18c1-b617-466b-9dbd-d7a2dfe40f55/bin/utaipan-vmNK8stdcF/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de18c1-b617-466b-9dbd-d7a2dfe40f55/bin/utaipan-vmNK8stdcF --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 1e1f6c8a80d54f6d4b7b413368cc99af6eca243b930331d178961d851b56afbd --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:37:46,778 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:37:46,779 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:37:46,814 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:37:46,815 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:37:46,816 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:37:46,818 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:37:46,821 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:37:46,823 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:37:46,825 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:37:46,826 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:37:46,828 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:37:46,828 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:37:46,830 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:37:46,832 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:37:46,834 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:37:46,835 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:37:46,836 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:37:46,839 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:37:46,845 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:37:46,858 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:37:46,860 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:37:46,861 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:37:46,862 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:37:46,866 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:37:46,874 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:37:46,874 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:37:46,876 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:37:46,876 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:37:46,877 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:37:46,878 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:37:46,879 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:37:46,879 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:37:46,880 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:37:46,881 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:37:46,882 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:37:46,882 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:37:46,883 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:37:46,883 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:37:46,884 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:37:46,884 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:37:46,885 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de18c1-b617-466b-9dbd-d7a2dfe40f55/bin/utaipan-vmNK8stdcF/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-12 22:37:46,913 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:37:46,913 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:37:46,914 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:37:46,914 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:37:46,915 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:37:46,915 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:37:46,915 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:37:46,915 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 22:37:46,915 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:37:46,916 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:37:46,916 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 22:37:46,916 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 22:37:46,916 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:37:46,916 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 22:37:46,917 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 22:37:46,917 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 22:37:46,917 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-12 22:37:46,918 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-12 22:37:46,918 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:37:46,918 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 22:37:46,918 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-12 22:37:46,918 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 22:37:46,919 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 22:37:46,919 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:37:46,919 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-12 22:37:46,919 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-12 22:37:46,919 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-12 22:37:46,920 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:37:46,920 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:37:46,920 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 22:37:46,920 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:37:46,920 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:37:46,921 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:37:46,921 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:37:46,921 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:37:46,921 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:37:46,921 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 22:37:46,922 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 22:37:46,922 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:37:46,922 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:37:46,922 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_60de18c1-b617-466b-9dbd-d7a2dfe40f55/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de18c1-b617-466b-9dbd-d7a2dfe40f55/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1e1f6c8a80d54f6d4b7b413368cc99af6eca243b930331d178961d851b56afbd [2021-11-12 22:37:47,219 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:37:47,242 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:37:47,245 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:37:47,247 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:37:47,248 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:37:47,249 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de18c1-b617-466b-9dbd-d7a2dfe40f55/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/locks/test_locks_14-1.c [2021-11-12 22:37:47,330 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de18c1-b617-466b-9dbd-d7a2dfe40f55/bin/utaipan-vmNK8stdcF/data/2767c6d03/ee8dac6f7d0b4240acba9feebbf99837/FLAG703413afc [2021-11-12 22:37:47,827 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:37:47,828 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de18c1-b617-466b-9dbd-d7a2dfe40f55/sv-benchmarks/c/locks/test_locks_14-1.c [2021-11-12 22:37:47,839 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de18c1-b617-466b-9dbd-d7a2dfe40f55/bin/utaipan-vmNK8stdcF/data/2767c6d03/ee8dac6f7d0b4240acba9feebbf99837/FLAG703413afc [2021-11-12 22:37:48,190 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de18c1-b617-466b-9dbd-d7a2dfe40f55/bin/utaipan-vmNK8stdcF/data/2767c6d03/ee8dac6f7d0b4240acba9feebbf99837 [2021-11-12 22:37:48,192 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:37:48,194 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:37:48,210 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:37:48,211 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:37:48,214 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:37:48,215 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:37:48" (1/1) ... [2021-11-12 22:37:48,216 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15b5f5fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:37:48, skipping insertion in model container [2021-11-12 22:37:48,216 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:37:48" (1/1) ... [2021-11-12 22:37:48,222 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:37:48,244 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:37:48,465 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_60de18c1-b617-466b-9dbd-d7a2dfe40f55/sv-benchmarks/c/locks/test_locks_14-1.c[5283,5296] [2021-11-12 22:37:48,469 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:37:48,477 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 22:37:48,506 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_60de18c1-b617-466b-9dbd-d7a2dfe40f55/sv-benchmarks/c/locks/test_locks_14-1.c[5283,5296] [2021-11-12 22:37:48,508 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:37:48,519 INFO L208 MainTranslator]: Completed translation [2021-11-12 22:37:48,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:37:48 WrapperNode [2021-11-12 22:37:48,520 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:37:48,521 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 22:37:48,521 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 22:37:48,521 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 22:37:48,529 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:37:48" (1/1) ... [2021-11-12 22:37:48,537 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:37:48" (1/1) ... [2021-11-12 22:37:48,573 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 22:37:48,581 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 22:37:48,582 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 22:37:48,582 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 22:37:48,591 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:37:48" (1/1) ... [2021-11-12 22:37:48,591 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:37:48" (1/1) ... [2021-11-12 22:37:48,608 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:37:48" (1/1) ... [2021-11-12 22:37:48,609 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:37:48" (1/1) ... [2021-11-12 22:37:48,614 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:37:48" (1/1) ... [2021-11-12 22:37:48,634 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:37:48" (1/1) ... [2021-11-12 22:37:48,636 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:37:48" (1/1) ... [2021-11-12 22:37:48,639 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 22:37:48,640 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 22:37:48,653 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 22:37:48,653 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 22:37:48,654 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:37:48" (1/1) ... [2021-11-12 22:37:48,661 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:37:48,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de18c1-b617-466b-9dbd-d7a2dfe40f55/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:37:48,700 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de18c1-b617-466b-9dbd-d7a2dfe40f55/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 22:37:48,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de18c1-b617-466b-9dbd-d7a2dfe40f55/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 22:37:48,756 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 22:37:48,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 22:37:48,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-12 22:37:48,759 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 22:37:49,283 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 22:37:49,283 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-12 22:37:49,286 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:37:49 BoogieIcfgContainer [2021-11-12 22:37:49,286 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 22:37:49,289 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 22:37:49,289 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 22:37:49,293 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 22:37:49,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 10:37:48" (1/3) ... [2021-11-12 22:37:49,294 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20a0b690 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:37:49, skipping insertion in model container [2021-11-12 22:37:49,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:37:48" (2/3) ... [2021-11-12 22:37:49,295 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20a0b690 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:37:49, skipping insertion in model container [2021-11-12 22:37:49,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:37:49" (3/3) ... [2021-11-12 22:37:49,296 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_14-1.c [2021-11-12 22:37:49,302 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 22:37:49,303 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-12 22:37:49,353 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 22:37:49,361 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-12 22:37:49,361 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-12 22:37:49,383 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 34 states have (on average 1.9411764705882353) internal successors, (66), 36 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:37:49,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-12 22:37:49,390 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:37:49,391 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-12 22:37:49,392 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-12 22:37:49,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:37:49,399 INFO L85 PathProgramCache]: Analyzing trace with hash 9122385, now seen corresponding path program 1 times [2021-11-12 22:37:49,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:37:49,411 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371838951] [2021-11-12 22:37:49,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:37:49,412 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:37:49,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:37:49,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:37:49,586 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:37:49,586 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371838951] [2021-11-12 22:37:49,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371838951] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:37:49,587 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:37:49,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-12 22:37:49,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089272233] [2021-11-12 22:37:49,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:37:49,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-12 22:37:49,595 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:37:49,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-12 22:37:49,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 22:37:49,627 INFO L87 Difference]: Start difference. First operand has 37 states, 34 states have (on average 1.9411764705882353) internal successors, (66), 36 states have internal predecessors, (66), 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) [2021-11-12 22:37:49,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:37:49,657 INFO L93 Difference]: Finished difference Result 37 states and 64 transitions. [2021-11-12 22:37:49,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-12 22:37:49,660 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 [2021-11-12 22:37:49,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:37:49,670 INFO L225 Difference]: With dead ends: 37 [2021-11-12 22:37:49,670 INFO L226 Difference]: Without dead ends: 36 [2021-11-12 22:37:49,672 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 22:37:49,676 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.16ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.49ms IncrementalHoareTripleChecker+Time [2021-11-12 22:37:49,678 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 61 Invalid, 3 Unknown, 0 Unchecked, 1.16ms Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 14.49ms Time] [2021-11-12 22:37:49,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-11-12 22:37:49,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-11-12 22:37:49,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 34 states have (on average 1.8529411764705883) internal successors, (63), 35 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:37:49,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 63 transitions. [2021-11-12 22:37:49,718 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 63 transitions. Word has length 4 [2021-11-12 22:37:49,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:37:49,718 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 63 transitions. [2021-11-12 22:37:49,718 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) [2021-11-12 22:37:49,719 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 63 transitions. [2021-11-12 22:37:49,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-12 22:37:49,719 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:37:49,719 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-12 22:37:49,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-12 22:37:49,720 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-12 22:37:49,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:37:49,722 INFO L85 PathProgramCache]: Analyzing trace with hash 274635153, now seen corresponding path program 1 times [2021-11-12 22:37:49,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:37:49,722 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307358840] [2021-11-12 22:37:49,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:37:49,723 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:37:49,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:37:49,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:37:49,778 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:37:49,778 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307358840] [2021-11-12 22:37:49,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307358840] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:37:49,779 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:37:49,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-12 22:37:49,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71045802] [2021-11-12 22:37:49,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:37:49,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 22:37:49,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:37:49,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 22:37:49,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:37:49,782 INFO L87 Difference]: Start difference. First operand 36 states and 63 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) [2021-11-12 22:37:49,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:37:49,799 INFO L93 Difference]: Finished difference Result 35 states and 62 transitions. [2021-11-12 22:37:49,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:37:49,800 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 [2021-11-12 22:37:49,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:37:49,801 INFO L225 Difference]: With dead ends: 35 [2021-11-12 22:37:49,801 INFO L226 Difference]: Without dead ends: 33 [2021-11-12 22:37:49,802 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:37:49,804 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 58 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.16ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.58ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.86ms IncrementalHoareTripleChecker+Time [2021-11-12 22:37:49,804 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 60 Invalid, 2 Unknown, 0 Unchecked, 1.58ms Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 8.86ms Time] [2021-11-12 22:37:49,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-11-12 22:37:49,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-11-12 22:37:49,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.875) internal successors, (60), 32 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:37:49,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 60 transitions. [2021-11-12 22:37:49,811 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 60 transitions. Word has length 5 [2021-11-12 22:37:49,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:37:49,812 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 60 transitions. [2021-11-12 22:37:49,812 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) [2021-11-12 22:37:49,812 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 60 transitions. [2021-11-12 22:37:49,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-12 22:37:49,813 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:37:49,813 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-12 22:37:49,813 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-12 22:37:49,814 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-12 22:37:49,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:37:49,815 INFO L85 PathProgramCache]: Analyzing trace with hash -67997349, now seen corresponding path program 1 times [2021-11-12 22:37:49,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:37:49,815 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77991712] [2021-11-12 22:37:49,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:37:49,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:37:49,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:37:49,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:37:49,902 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:37:49,902 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77991712] [2021-11-12 22:37:49,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77991712] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:37:49,903 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:37:49,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-12 22:37:49,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11296183] [2021-11-12 22:37:49,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:37:49,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:37:49,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:37:49,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:37:49,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:37:49,906 INFO L87 Difference]: Start difference. First operand 33 states and 60 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 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) [2021-11-12 22:37:49,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:37:49,945 INFO L93 Difference]: Finished difference Result 63 states and 114 transitions. [2021-11-12 22:37:49,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 22:37:49,946 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 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 [2021-11-12 22:37:49,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:37:49,948 INFO L225 Difference]: With dead ends: 63 [2021-11-12 22:37:49,948 INFO L226 Difference]: Without dead ends: 63 [2021-11-12 22:37:49,948 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:37:49,950 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 56 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.01ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.05ms IncrementalHoareTripleChecker+Time [2021-11-12 22:37:49,951 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 164 Invalid, 13 Unknown, 0 Unchecked, 3.01ms Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 22.05ms Time] [2021-11-12 22:37:49,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-11-12 22:37:49,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 33. [2021-11-12 22:37:49,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.84375) internal successors, (59), 32 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:37:49,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 59 transitions. [2021-11-12 22:37:49,959 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 59 transitions. Word has length 6 [2021-11-12 22:37:49,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:37:49,960 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 59 transitions. [2021-11-12 22:37:49,960 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 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) [2021-11-12 22:37:49,961 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 59 transitions. [2021-11-12 22:37:49,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-12 22:37:49,961 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:37:49,961 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:37:49,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-12 22:37:49,962 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-12 22:37:49,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:37:49,963 INFO L85 PathProgramCache]: Analyzing trace with hash -2107705767, now seen corresponding path program 1 times [2021-11-12 22:37:49,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:37:49,963 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322862472] [2021-11-12 22:37:49,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:37:49,964 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:37:49,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:37:50,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:37:50,033 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:37:50,033 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322862472] [2021-11-12 22:37:50,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322862472] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:37:50,034 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:37:50,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-12 22:37:50,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944037157] [2021-11-12 22:37:50,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:37:50,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:37:50,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:37:50,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:37:50,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:37:50,036 INFO L87 Difference]: Start difference. First operand 33 states and 59 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:37:50,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:37:50,067 INFO L93 Difference]: Finished difference Result 61 states and 109 transitions. [2021-11-12 22:37:50,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 22:37:50,067 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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 7 [2021-11-12 22:37:50,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:37:50,069 INFO L225 Difference]: With dead ends: 61 [2021-11-12 22:37:50,069 INFO L226 Difference]: Without dead ends: 61 [2021-11-12 22:37:50,070 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:37:50,071 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 54 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.14ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.38ms IncrementalHoareTripleChecker+Time [2021-11-12 22:37:50,072 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 158 Invalid, 13 Unknown, 0 Unchecked, 2.14ms Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 19.38ms Time] [2021-11-12 22:37:50,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-11-12 22:37:50,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 33. [2021-11-12 22:37:50,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.8125) internal successors, (58), 32 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:37:50,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 58 transitions. [2021-11-12 22:37:50,080 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 58 transitions. Word has length 7 [2021-11-12 22:37:50,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:37:50,080 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 58 transitions. [2021-11-12 22:37:50,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:37:50,081 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 58 transitions. [2021-11-12 22:37:50,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-12 22:37:50,081 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:37:50,081 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:37:50,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-12 22:37:50,091 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-12 22:37:50,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:37:50,092 INFO L85 PathProgramCache]: Analyzing trace with hash -914156944, now seen corresponding path program 1 times [2021-11-12 22:37:50,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:37:50,093 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407005241] [2021-11-12 22:37:50,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:37:50,093 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:37:50,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:37:50,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:37:50,203 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:37:50,204 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407005241] [2021-11-12 22:37:50,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407005241] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:37:50,204 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:37:50,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-12 22:37:50,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122876013] [2021-11-12 22:37:50,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:37:50,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:37:50,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:37:50,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:37:50,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:37:50,206 INFO L87 Difference]: Start difference. First operand 33 states and 58 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:37:50,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:37:50,249 INFO L93 Difference]: Finished difference Result 59 states and 104 transitions. [2021-11-12 22:37:50,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 22:37:50,250 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-12 22:37:50,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:37:50,252 INFO L225 Difference]: With dead ends: 59 [2021-11-12 22:37:50,255 INFO L226 Difference]: Without dead ends: 59 [2021-11-12 22:37:50,256 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:37:50,258 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 52 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.13ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.79ms IncrementalHoareTripleChecker+Time [2021-11-12 22:37:50,262 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 152 Invalid, 13 Unknown, 0 Unchecked, 2.13ms Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 27.79ms Time] [2021-11-12 22:37:50,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-11-12 22:37:50,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 33. [2021-11-12 22:37:50,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.78125) internal successors, (57), 32 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:37:50,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 57 transitions. [2021-11-12 22:37:50,283 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 57 transitions. Word has length 8 [2021-11-12 22:37:50,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:37:50,284 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 57 transitions. [2021-11-12 22:37:50,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:37:50,285 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 57 transitions. [2021-11-12 22:37:50,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-12 22:37:50,288 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:37:50,288 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:37:50,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-12 22:37:50,289 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-12 22:37:50,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:37:50,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1726118542, now seen corresponding path program 1 times [2021-11-12 22:37:50,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:37:50,290 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210808501] [2021-11-12 22:37:50,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:37:50,292 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:37:50,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:37:50,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:37:50,423 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:37:50,424 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210808501] [2021-11-12 22:37:50,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210808501] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:37:50,425 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:37:50,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-12 22:37:50,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886327320] [2021-11-12 22:37:50,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:37:50,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:37:50,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:37:50,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:37:50,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:37:50,429 INFO L87 Difference]: Start difference. First operand 33 states and 57 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:37:50,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:37:50,487 INFO L93 Difference]: Finished difference Result 57 states and 99 transitions. [2021-11-12 22:37:50,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 22:37:50,488 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-12 22:37:50,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:37:50,489 INFO L225 Difference]: With dead ends: 57 [2021-11-12 22:37:50,489 INFO L226 Difference]: Without dead ends: 57 [2021-11-12 22:37:50,490 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:37:50,491 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 50 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.78ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 49.30ms IncrementalHoareTripleChecker+Time [2021-11-12 22:37:50,502 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 145 Invalid, 11 Unknown, 0 Unchecked, 1.78ms Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 49.30ms Time] [2021-11-12 22:37:50,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-11-12 22:37:50,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 33. [2021-11-12 22:37:50,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.75) internal successors, (56), 32 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:37:50,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 56 transitions. [2021-11-12 22:37:50,509 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 56 transitions. Word has length 9 [2021-11-12 22:37:50,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:37:50,509 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 56 transitions. [2021-11-12 22:37:50,510 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:37:50,510 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 56 transitions. [2021-11-12 22:37:50,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-12 22:37:50,511 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:37:50,511 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:37:50,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-12 22:37:50,511 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-12 22:37:50,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:37:50,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1970280325, now seen corresponding path program 1 times [2021-11-12 22:37:50,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:37:50,521 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682545513] [2021-11-12 22:37:50,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:37:50,522 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:37:50,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:37:50,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:37:50,607 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:37:50,607 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682545513] [2021-11-12 22:37:50,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682545513] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:37:50,607 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:37:50,607 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-12 22:37:50,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8678201] [2021-11-12 22:37:50,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:37:50,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:37:50,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:37:50,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:37:50,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:37:50,610 INFO L87 Difference]: Start difference. First operand 33 states and 56 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:37:50,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:37:50,673 INFO L93 Difference]: Finished difference Result 55 states and 94 transitions. [2021-11-12 22:37:50,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 22:37:50,674 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-12 22:37:50,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:37:50,675 INFO L225 Difference]: With dead ends: 55 [2021-11-12 22:37:50,675 INFO L226 Difference]: Without dead ends: 55 [2021-11-12 22:37:50,676 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:37:50,677 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 48 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 48.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.39ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 56.65ms IncrementalHoareTripleChecker+Time [2021-11-12 22:37:50,677 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 140 Invalid, 13 Unknown, 0 Unchecked, 1.39ms Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 56.65ms Time] [2021-11-12 22:37:50,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-11-12 22:37:50,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 33. [2021-11-12 22:37:50,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.71875) internal successors, (55), 32 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:37:50,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 55 transitions. [2021-11-12 22:37:50,683 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 55 transitions. Word has length 10 [2021-11-12 22:37:50,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:37:50,683 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 55 transitions. [2021-11-12 22:37:50,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:37:50,683 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 55 transitions. [2021-11-12 22:37:50,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-12 22:37:50,684 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:37:50,684 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:37:50,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-12 22:37:50,685 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-12 22:37:50,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:37:50,686 INFO L85 PathProgramCache]: Analyzing trace with hash 949361347, now seen corresponding path program 1 times [2021-11-12 22:37:50,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:37:50,686 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379600496] [2021-11-12 22:37:50,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:37:50,686 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:37:50,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:37:50,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:37:50,735 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:37:50,735 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379600496] [2021-11-12 22:37:50,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379600496] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:37:50,735 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:37:50,736 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-12 22:37:50,736 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241465134] [2021-11-12 22:37:50,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:37:50,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:37:50,737 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:37:50,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:37:50,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:37:50,738 INFO L87 Difference]: Start difference. First operand 33 states and 55 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:37:50,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:37:50,759 INFO L93 Difference]: Finished difference Result 53 states and 89 transitions. [2021-11-12 22:37:50,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 22:37:50,760 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 11 [2021-11-12 22:37:50,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:37:50,761 INFO L225 Difference]: With dead ends: 53 [2021-11-12 22:37:50,761 INFO L226 Difference]: Without dead ends: 53 [2021-11-12 22:37:50,762 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:37:50,763 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 46 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.17ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.28ms IncrementalHoareTripleChecker+Time [2021-11-12 22:37:50,763 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 133 Invalid, 11 Unknown, 0 Unchecked, 1.17ms Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 16.28ms Time] [2021-11-12 22:37:50,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-11-12 22:37:50,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 33. [2021-11-12 22:37:50,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.6875) internal successors, (54), 32 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:37:50,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 54 transitions. [2021-11-12 22:37:50,780 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 54 transitions. Word has length 11 [2021-11-12 22:37:50,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:37:50,782 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 54 transitions. [2021-11-12 22:37:50,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:37:50,782 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 54 transitions. [2021-11-12 22:37:50,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-12 22:37:50,788 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:37:50,788 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:37:50,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-12 22:37:50,789 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-12 22:37:50,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:37:50,789 INFO L85 PathProgramCache]: Analyzing trace with hash -634355558, now seen corresponding path program 1 times [2021-11-12 22:37:50,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:37:50,790 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511762896] [2021-11-12 22:37:50,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:37:50,790 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:37:50,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:37:50,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:37:50,874 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:37:50,874 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511762896] [2021-11-12 22:37:50,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511762896] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:37:50,874 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:37:50,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-12 22:37:50,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965902561] [2021-11-12 22:37:50,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:37:50,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:37:50,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:37:50,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:37:50,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:37:50,877 INFO L87 Difference]: Start difference. First operand 33 states and 54 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:37:50,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:37:50,918 INFO L93 Difference]: Finished difference Result 51 states and 84 transitions. [2021-11-12 22:37:50,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 22:37:50,919 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 12 [2021-11-12 22:37:50,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:37:50,919 INFO L225 Difference]: With dead ends: 51 [2021-11-12 22:37:50,920 INFO L226 Difference]: Without dead ends: 51 [2021-11-12 22:37:50,920 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:37:50,921 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 44 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.12ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.55ms IncrementalHoareTripleChecker+Time [2021-11-12 22:37:50,922 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 127 Invalid, 11 Unknown, 0 Unchecked, 1.12ms Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 35.55ms Time] [2021-11-12 22:37:50,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-11-12 22:37:50,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 33. [2021-11-12 22:37:50,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.65625) internal successors, (53), 32 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:37:50,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 53 transitions. [2021-11-12 22:37:50,932 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 53 transitions. Word has length 12 [2021-11-12 22:37:50,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:37:50,932 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 53 transitions. [2021-11-12 22:37:50,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:37:50,933 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 53 transitions. [2021-11-12 22:37:50,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-12 22:37:50,934 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:37:50,934 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:37:50,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-12 22:37:50,934 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-12 22:37:50,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:37:50,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1810028280, now seen corresponding path program 1 times [2021-11-12 22:37:50,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:37:50,940 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270779851] [2021-11-12 22:37:50,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:37:50,940 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:37:50,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:37:50,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:37:50,991 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:37:50,991 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270779851] [2021-11-12 22:37:50,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270779851] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:37:50,992 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:37:50,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-12 22:37:50,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380432559] [2021-11-12 22:37:50,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:37:50,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:37:50,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:37:50,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:37:50,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:37:50,996 INFO L87 Difference]: Start difference. First operand 33 states and 53 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:37:51,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:37:51,019 INFO L93 Difference]: Finished difference Result 49 states and 79 transitions. [2021-11-12 22:37:51,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 22:37:51,020 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-12 22:37:51,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:37:51,021 INFO L225 Difference]: With dead ends: 49 [2021-11-12 22:37:51,021 INFO L226 Difference]: Without dead ends: 49 [2021-11-12 22:37:51,023 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:37:51,024 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 42 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.04ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.27ms IncrementalHoareTripleChecker+Time [2021-11-12 22:37:51,025 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 122 Invalid, 13 Unknown, 0 Unchecked, 1.04ms Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 19.27ms Time] [2021-11-12 22:37:51,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-11-12 22:37:51,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 33. [2021-11-12 22:37:51,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.625) internal successors, (52), 32 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:37:51,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 52 transitions. [2021-11-12 22:37:51,033 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 52 transitions. Word has length 13 [2021-11-12 22:37:51,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:37:51,034 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 52 transitions. [2021-11-12 22:37:51,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:37:51,034 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 52 transitions. [2021-11-12 22:37:51,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-12 22:37:51,035 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:37:51,036 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:37:51,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-12 22:37:51,036 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-12 22:37:51,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:37:51,037 INFO L85 PathProgramCache]: Analyzing trace with hash 276516271, now seen corresponding path program 1 times [2021-11-12 22:37:51,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:37:51,038 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320964277] [2021-11-12 22:37:51,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:37:51,039 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:37:51,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:37:51,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:37:51,101 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:37:51,101 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320964277] [2021-11-12 22:37:51,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320964277] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:37:51,102 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:37:51,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-12 22:37:51,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214303550] [2021-11-12 22:37:51,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:37:51,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:37:51,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:37:51,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:37:51,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:37:51,104 INFO L87 Difference]: Start difference. First operand 33 states and 52 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:37:51,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:37:51,129 INFO L93 Difference]: Finished difference Result 47 states and 74 transitions. [2021-11-12 22:37:51,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 22:37:51,129 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 14 [2021-11-12 22:37:51,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:37:51,131 INFO L225 Difference]: With dead ends: 47 [2021-11-12 22:37:51,131 INFO L226 Difference]: Without dead ends: 47 [2021-11-12 22:37:51,131 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:37:51,135 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 40 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.42ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.97ms IncrementalHoareTripleChecker+Time [2021-11-12 22:37:51,135 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 115 Invalid, 11 Unknown, 0 Unchecked, 1.42ms Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 20.97ms Time] [2021-11-12 22:37:51,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-11-12 22:37:51,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 33. [2021-11-12 22:37:51,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.59375) internal successors, (51), 32 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:37:51,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 51 transitions. [2021-11-12 22:37:51,147 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 51 transitions. Word has length 14 [2021-11-12 22:37:51,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:37:51,147 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 51 transitions. [2021-11-12 22:37:51,151 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:37:51,151 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 51 transitions. [2021-11-12 22:37:51,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-12 22:37:51,152 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:37:51,152 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:37:51,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-12 22:37:51,153 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-12 22:37:51,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:37:51,153 INFO L85 PathProgramCache]: Analyzing trace with hash -17715411, now seen corresponding path program 1 times [2021-11-12 22:37:51,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:37:51,154 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916197014] [2021-11-12 22:37:51,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:37:51,154 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:37:51,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:37:51,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:37:51,202 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:37:51,202 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916197014] [2021-11-12 22:37:51,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916197014] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:37:51,202 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:37:51,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-12 22:37:51,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081764742] [2021-11-12 22:37:51,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:37:51,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:37:51,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:37:51,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:37:51,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:37:51,205 INFO L87 Difference]: Start difference. First operand 33 states and 51 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:37:51,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:37:51,227 INFO L93 Difference]: Finished difference Result 45 states and 69 transitions. [2021-11-12 22:37:51,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 22:37:51,228 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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 15 [2021-11-12 22:37:51,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:37:51,229 INFO L225 Difference]: With dead ends: 45 [2021-11-12 22:37:51,230 INFO L226 Difference]: Without dead ends: 45 [2021-11-12 22:37:51,231 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:37:51,232 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 38 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.49ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.22ms IncrementalHoareTripleChecker+Time [2021-11-12 22:37:51,232 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 109 Invalid, 11 Unknown, 0 Unchecked, 0.49ms Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 19.22ms Time] [2021-11-12 22:37:51,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-11-12 22:37:51,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 33. [2021-11-12 22:37:51,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.5625) internal successors, (50), 32 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:37:51,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 50 transitions. [2021-11-12 22:37:51,248 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 50 transitions. Word has length 15 [2021-11-12 22:37:51,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:37:51,248 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 50 transitions. [2021-11-12 22:37:51,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:37:51,249 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 50 transitions. [2021-11-12 22:37:51,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-12 22:37:51,251 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:37:51,251 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:37:51,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-12 22:37:51,252 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-12 22:37:51,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:37:51,253 INFO L85 PathProgramCache]: Analyzing trace with hash -548962620, now seen corresponding path program 1 times [2021-11-12 22:37:51,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:37:51,254 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376314073] [2021-11-12 22:37:51,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:37:51,254 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:37:51,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:37:51,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:37:51,328 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:37:51,328 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376314073] [2021-11-12 22:37:51,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376314073] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:37:51,329 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:37:51,329 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-12 22:37:51,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433088760] [2021-11-12 22:37:51,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:37:51,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:37:51,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:37:51,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:37:51,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:37:51,330 INFO L87 Difference]: Start difference. First operand 33 states and 50 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:37:51,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:37:51,356 INFO L93 Difference]: Finished difference Result 43 states and 64 transitions. [2021-11-12 22:37:51,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 22:37:51,357 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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 16 [2021-11-12 22:37:51,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:37:51,358 INFO L225 Difference]: With dead ends: 43 [2021-11-12 22:37:51,358 INFO L226 Difference]: Without dead ends: 43 [2021-11-12 22:37:51,358 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:37:51,359 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 36 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.44ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.78ms IncrementalHoareTripleChecker+Time [2021-11-12 22:37:51,359 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 104 Invalid, 13 Unknown, 0 Unchecked, 0.44ms Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 23.78ms Time] [2021-11-12 22:37:51,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-11-12 22:37:51,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 33. [2021-11-12 22:37:51,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.53125) internal successors, (49), 32 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:37:51,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 49 transitions. [2021-11-12 22:37:51,362 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 49 transitions. Word has length 16 [2021-11-12 22:37:51,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:37:51,363 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 49 transitions. [2021-11-12 22:37:51,363 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:37:51,363 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 49 transitions. [2021-11-12 22:37:51,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-12 22:37:51,364 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:37:51,364 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:37:51,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-12 22:37:51,364 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-12 22:37:51,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:37:51,365 INFO L85 PathProgramCache]: Analyzing trace with hash 162243426, now seen corresponding path program 1 times [2021-11-12 22:37:51,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:37:51,365 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244987007] [2021-11-12 22:37:51,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:37:51,366 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:37:51,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:37:51,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:37:51,405 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:37:51,405 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244987007] [2021-11-12 22:37:51,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244987007] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:37:51,406 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:37:51,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-12 22:37:51,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880270956] [2021-11-12 22:37:51,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:37:51,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:37:51,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:37:51,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:37:51,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:37:51,408 INFO L87 Difference]: Start difference. First operand 33 states and 49 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:37:51,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:37:51,425 INFO L93 Difference]: Finished difference Result 41 states and 59 transitions. [2021-11-12 22:37:51,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 22:37:51,426 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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 17 [2021-11-12 22:37:51,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:37:51,427 INFO L225 Difference]: With dead ends: 41 [2021-11-12 22:37:51,427 INFO L226 Difference]: Without dead ends: 41 [2021-11-12 22:37:51,427 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:37:51,428 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 34 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.44ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.21ms IncrementalHoareTripleChecker+Time [2021-11-12 22:37:51,428 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 97 Invalid, 11 Unknown, 0 Unchecked, 0.44ms Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 15.21ms Time] [2021-11-12 22:37:51,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-11-12 22:37:51,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 33. [2021-11-12 22:37:51,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.5) internal successors, (48), 32 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:37:51,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 48 transitions. [2021-11-12 22:37:51,431 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 48 transitions. Word has length 17 [2021-11-12 22:37:51,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:37:51,432 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 48 transitions. [2021-11-12 22:37:51,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:37:51,432 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 48 transitions. [2021-11-12 22:37:51,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-12 22:37:51,433 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:37:51,433 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:37:51,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-12 22:37:51,434 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-12 22:37:51,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:37:51,434 INFO L85 PathProgramCache]: Analyzing trace with hash 734794713, now seen corresponding path program 1 times [2021-11-12 22:37:51,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:37:51,435 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735315598] [2021-11-12 22:37:51,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:37:51,435 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:37:51,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:37:51,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:37:51,491 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:37:51,491 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735315598] [2021-11-12 22:37:51,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735315598] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:37:51,491 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:37:51,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-12 22:37:51,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669835755] [2021-11-12 22:37:51,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:37:51,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:37:51,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:37:51,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:37:51,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:37:51,493 INFO L87 Difference]: Start difference. First operand 33 states and 48 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:37:51,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:37:51,512 INFO L93 Difference]: Finished difference Result 39 states and 54 transitions. [2021-11-12 22:37:51,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 22:37:51,512 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-12 22:37:51,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:37:51,514 INFO L225 Difference]: With dead ends: 39 [2021-11-12 22:37:51,514 INFO L226 Difference]: Without dead ends: 39 [2021-11-12 22:37:51,516 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:37:51,518 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 32 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.41ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.73ms IncrementalHoareTripleChecker+Time [2021-11-12 22:37:51,518 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 92 Invalid, 13 Unknown, 0 Unchecked, 0.41ms Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 16.73ms Time] [2021-11-12 22:37:51,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-11-12 22:37:51,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 33. [2021-11-12 22:37:51,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.46875) internal successors, (47), 32 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:37:51,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 47 transitions. [2021-11-12 22:37:51,520 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 47 transitions. Word has length 18 [2021-11-12 22:37:51,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:37:51,521 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 47 transitions. [2021-11-12 22:37:51,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:37:51,521 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 47 transitions. [2021-11-12 22:37:51,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-12 22:37:51,522 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:37:51,522 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:37:51,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-12 22:37:51,522 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-12 22:37:51,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:37:51,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1304015767, now seen corresponding path program 1 times [2021-11-12 22:37:51,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:37:51,523 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789364326] [2021-11-12 22:37:51,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:37:51,523 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:37:51,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:37:51,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:37:51,579 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:37:51,579 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789364326] [2021-11-12 22:37:51,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789364326] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:37:51,582 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:37:51,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-12 22:37:51,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949525070] [2021-11-12 22:37:51,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:37:51,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:37:51,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:37:51,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:37:51,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:37:51,584 INFO L87 Difference]: Start difference. First operand 33 states and 47 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:37:51,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:37:51,601 INFO L93 Difference]: Finished difference Result 33 states and 47 transitions. [2021-11-12 22:37:51,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 22:37:51,602 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 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 19 [2021-11-12 22:37:51,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:37:51,602 INFO L225 Difference]: With dead ends: 33 [2021-11-12 22:37:51,602 INFO L226 Difference]: Without dead ends: 0 [2021-11-12 22:37:51,602 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:37:51,603 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 29 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.37ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.52ms IncrementalHoareTripleChecker+Time [2021-11-12 22:37:51,603 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 82 Invalid, 11 Unknown, 0 Unchecked, 0.37ms Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 15.52ms Time] [2021-11-12 22:37:51,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-12 22:37:51,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-12 22:37:51,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:37:51,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-12 22:37:51,606 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2021-11-12 22:37:51,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:37:51,606 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-12 22:37:51,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:37:51,606 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-12 22:37:51,606 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-12 22:37:51,609 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 2 remaining) [2021-11-12 22:37:51,610 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (0 of 2 remaining) [2021-11-12 22:37:51,610 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-12 22:37:51,614 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:37:51,619 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-12 22:37:51,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 10:37:51 BoogieIcfgContainer [2021-11-12 22:37:51,623 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-12 22:37:51,624 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-12 22:37:51,624 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-12 22:37:51,624 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-12 22:37:51,625 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:37:49" (3/4) ... [2021-11-12 22:37:51,630 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-12 22:37:51,657 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 23 nodes and edges [2021-11-12 22:37:51,658 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-11-12 22:37:51,658 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-11-12 22:37:51,659 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-12 22:37:51,741 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de18c1-b617-466b-9dbd-d7a2dfe40f55/bin/utaipan-vmNK8stdcF/witness.graphml [2021-11-12 22:37:51,742 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-12 22:37:51,742 INFO L158 Benchmark]: Toolchain (without parser) took 3548.63ms. Allocated memory was 115.3MB in the beginning and 138.4MB in the end (delta: 23.1MB). Free memory was 82.5MB in the beginning and 83.1MB in the end (delta: -574.7kB). Peak memory consumption was 21.8MB. Max. memory is 16.1GB. [2021-11-12 22:37:51,743 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 81.8MB. Free memory was 38.1MB in the beginning and 38.0MB in the end (delta: 70.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:37:51,744 INFO L158 Benchmark]: CACSL2BoogieTranslator took 309.41ms. Allocated memory is still 115.3MB. Free memory was 82.3MB in the beginning and 90.4MB in the end (delta: -8.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-12 22:37:51,748 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.03ms. Allocated memory is still 115.3MB. Free memory was 90.4MB in the beginning and 88.7MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:37:51,749 INFO L158 Benchmark]: Boogie Preprocessor took 57.53ms. Allocated memory is still 115.3MB. Free memory was 88.3MB in the beginning and 87.0MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:37:51,749 INFO L158 Benchmark]: RCFGBuilder took 646.79ms. Allocated memory is still 115.3MB. Free memory was 87.0MB in the beginning and 66.0MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2021-11-12 22:37:51,750 INFO L158 Benchmark]: TraceAbstraction took 2334.57ms. Allocated memory was 115.3MB in the beginning and 138.4MB in the end (delta: 23.1MB). Free memory was 65.7MB in the beginning and 87.3MB in the end (delta: -21.6MB). Peak memory consumption was 3.6MB. Max. memory is 16.1GB. [2021-11-12 22:37:51,750 INFO L158 Benchmark]: Witness Printer took 117.65ms. Allocated memory is still 138.4MB. Free memory was 87.3MB in the beginning and 83.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-12 22:37:51,753 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 81.8MB. Free memory was 38.1MB in the beginning and 38.0MB in the end (delta: 70.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 309.41ms. Allocated memory is still 115.3MB. Free memory was 82.3MB in the beginning and 90.4MB in the end (delta: -8.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 60.03ms. Allocated memory is still 115.3MB. Free memory was 90.4MB in the beginning and 88.7MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 57.53ms. Allocated memory is still 115.3MB. Free memory was 88.3MB in the beginning and 87.0MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 646.79ms. Allocated memory is still 115.3MB. Free memory was 87.0MB in the beginning and 66.0MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 2334.57ms. Allocated memory was 115.3MB in the beginning and 138.4MB in the end (delta: 23.1MB). Free memory was 65.7MB in the beginning and 87.3MB in the end (delta: -21.6MB). Peak memory consumption was 3.6MB. Max. memory is 16.1GB. * Witness Printer took 117.65ms. Allocated memory is still 138.4MB. Free memory was 87.3MB in the beginning and 83.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 219]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 6]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 37 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 2.3s, OverallIterations: 16, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 659 SdHoareTripleChecker+Valid, 381.07ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 659 mSDsluCounter, 1861 SdHoareTripleChecker+Invalid, 293.44ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1062 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 173 IncrementalHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 799 mSDtfsCounter, 173 mSolverCounterSat, 20.10ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 59 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=0, InterpolantAutomatonStates: 61, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 16 MinimizatonAttempts, 234 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 184 NumberOfCodeBlocks, 184 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 168 ConstructedInterpolants, 0 QuantifiedInterpolants, 834 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-11-12 22:37:51,817 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60de18c1-b617-466b-9dbd-d7a2dfe40f55/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE