./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/heap-manipulation/merge_sort-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/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_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/heap-manipulation/merge_sort-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/config/svcomp-MemCleanup-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/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-memcleanup) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 15d1d7d49ed223522c6431664b8ff836ebc81296f5e11773e2197361bd8b13cf --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:42:13,894 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:42:13,896 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:42:13,956 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:42:13,957 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:42:13,966 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:42:13,969 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:42:13,975 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:42:13,978 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:42:13,987 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:42:13,988 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:42:13,990 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:42:13,990 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:42:13,992 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:42:13,993 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:42:13,995 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:42:14,016 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:42:14,018 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:42:14,020 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:42:14,023 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:42:14,025 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:42:14,029 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:42:14,030 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:42:14,032 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:42:14,036 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:42:14,036 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:42:14,037 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:42:14,038 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:42:14,039 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:42:14,040 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:42:14,041 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:42:14,042 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:42:14,053 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:42:14,055 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:42:14,056 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:42:14,057 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:42:14,058 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:42:14,058 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:42:14,059 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:42:14,060 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:42:14,061 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:42:14,061 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/config/svcomp-MemCleanup-32bit-Taipan_Default.epf [2021-11-12 23:42:14,093 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:42:14,093 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:42:14,094 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:42:14,094 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:42:14,095 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:42:14,095 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:42:14,095 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:42:14,102 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 23:42:14,102 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:42:14,103 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:42:14,103 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 23:42:14,103 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 23:42:14,103 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:42:14,104 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 23:42:14,104 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 23:42:14,104 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 23:42:14,105 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-12 23:42:14,105 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-12 23:42:14,105 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:42:14,105 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 23:42:14,106 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-12 23:42:14,106 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 23:42:14,106 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 23:42:14,106 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:42:14,107 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-12 23:42:14,107 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-12 23:42:14,107 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:42:14,107 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:42:14,107 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 23:42:14,108 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:42:14,108 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:42:14,108 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:42:14,108 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:42:14,109 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:42:14,109 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:42:14,109 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 23:42:14,109 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 23:42:14,109 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:42:14,110 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:42:14,110 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_cc8e9269-661f-4483-abbf-8ae721f43333/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 15d1d7d49ed223522c6431664b8ff836ebc81296f5e11773e2197361bd8b13cf [2021-11-12 23:42:14,393 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:42:14,417 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:42:14,420 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:42:14,421 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:42:14,422 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:42:14,424 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/heap-manipulation/merge_sort-1.i [2021-11-12 23:42:14,489 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/data/95570a4c6/8b4125b20fe845b4bb696ae44ebb32d3/FLAG1420b8430 [2021-11-12 23:42:15,130 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:42:15,131 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/sv-benchmarks/c/heap-manipulation/merge_sort-1.i [2021-11-12 23:42:15,150 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/data/95570a4c6/8b4125b20fe845b4bb696ae44ebb32d3/FLAG1420b8430 [2021-11-12 23:42:15,420 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/data/95570a4c6/8b4125b20fe845b4bb696ae44ebb32d3 [2021-11-12 23:42:15,425 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:42:15,427 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:42:15,432 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:42:15,432 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:42:15,436 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:42:15,437 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:42:15" (1/1) ... [2021-11-12 23:42:15,440 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1dc1db94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:42:15, skipping insertion in model container [2021-11-12 23:42:15,440 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:42:15" (1/1) ... [2021-11-12 23:42:15,449 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:42:15,526 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:42:15,880 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_cc8e9269-661f-4483-abbf-8ae721f43333/sv-benchmarks/c/heap-manipulation/merge_sort-1.i[22632,22645] [2021-11-12 23:42:15,950 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:42:15,966 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 23:42:16,039 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_cc8e9269-661f-4483-abbf-8ae721f43333/sv-benchmarks/c/heap-manipulation/merge_sort-1.i[22632,22645] [2021-11-12 23:42:16,069 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:42:16,113 INFO L208 MainTranslator]: Completed translation [2021-11-12 23:42:16,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:42:16 WrapperNode [2021-11-12 23:42:16,114 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:42:16,116 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 23:42:16,116 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 23:42:16,116 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 23:42:16,128 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:42:16" (1/1) ... [2021-11-12 23:42:16,170 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:42:16" (1/1) ... [2021-11-12 23:42:16,212 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 23:42:16,213 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 23:42:16,214 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 23:42:16,214 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 23:42:16,223 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:42:16" (1/1) ... [2021-11-12 23:42:16,223 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:42:16" (1/1) ... [2021-11-12 23:42:16,232 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:42:16" (1/1) ... [2021-11-12 23:42:16,232 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:42:16" (1/1) ... [2021-11-12 23:42:16,249 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:42:16" (1/1) ... [2021-11-12 23:42:16,271 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:42:16" (1/1) ... [2021-11-12 23:42:16,291 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:42:16" (1/1) ... [2021-11-12 23:42:16,297 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 23:42:16,298 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 23:42:16,298 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 23:42:16,298 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 23:42:16,315 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:42:16" (1/1) ... [2021-11-12 23:42:16,324 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:42:16,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:42:16,373 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 23:42:16,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 23:42:16,418 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-12 23:42:16,419 INFO L130 BoogieDeclarations]: Found specification of procedure merge_single_node [2021-11-12 23:42:16,420 INFO L138 BoogieDeclarations]: Found implementation of procedure merge_single_node [2021-11-12 23:42:16,421 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2021-11-12 23:42:16,421 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2021-11-12 23:42:16,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-12 23:42:16,421 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-12 23:42:16,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-12 23:42:16,422 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 23:42:16,422 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-12 23:42:16,422 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 23:42:16,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-12 23:42:16,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 23:42:16,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 23:42:17,510 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 23:42:17,511 INFO L299 CfgBuilder]: Removed 33 assume(true) statements. [2021-11-12 23:42:17,513 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:42:17 BoogieIcfgContainer [2021-11-12 23:42:17,514 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 23:42:17,517 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 23:42:17,518 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 23:42:17,521 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 23:42:17,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:42:15" (1/3) ... [2021-11-12 23:42:17,523 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37bf8b3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:42:17, skipping insertion in model container [2021-11-12 23:42:17,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:42:16" (2/3) ... [2021-11-12 23:42:17,524 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37bf8b3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:42:17, skipping insertion in model container [2021-11-12 23:42:17,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:42:17" (3/3) ... [2021-11-12 23:42:17,526 INFO L111 eAbstractionObserver]: Analyzing ICFG merge_sort-1.i [2021-11-12 23:42:17,536 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 23:42:17,536 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 105 error locations. [2021-11-12 23:42:17,591 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 23:42:17,599 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 23:42:17,600 INFO L340 AbstractCegarLoop]: Starting to check reachability of 105 error locations. [2021-11-12 23:42:17,625 INFO L276 IsEmpty]: Start isEmpty. Operand has 230 states, 107 states have (on average 2.514018691588785) internal successors, (269), 227 states have internal predecessors, (269), 15 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-12 23:42:17,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-12 23:42:17,634 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:42:17,635 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-12 23:42:17,635 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION (and 101 more)] === [2021-11-12 23:42:17,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:42:17,642 INFO L85 PathProgramCache]: Analyzing trace with hash 18345167, now seen corresponding path program 1 times [2021-11-12 23:42:17,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:42:17,668 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682433228] [2021-11-12 23:42:17,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:42:17,671 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:42:17,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:42:17,870 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 23:42:17,871 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:42:17,871 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682433228] [2021-11-12 23:42:17,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682433228] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:42:17,873 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:42:17,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-12 23:42:17,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766140363] [2021-11-12 23:42:17,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:42:17,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:42:17,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:42:17,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:42:17,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:42:17,919 INFO L87 Difference]: Start difference. First operand has 230 states, 107 states have (on average 2.514018691588785) internal successors, (269), 227 states have internal predecessors, (269), 15 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 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 23:42:18,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:42:18,391 INFO L93 Difference]: Finished difference Result 396 states and 447 transitions. [2021-11-12 23:42:18,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:42:18,394 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 23:42:18,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:42:18,409 INFO L225 Difference]: With dead ends: 396 [2021-11-12 23:42:18,410 INFO L226 Difference]: Without dead ends: 394 [2021-11-12 23:42:18,411 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 23:42:18,416 INFO L933 BasicCegarLoop]: 337 mSDtfsCounter, 181 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 304.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.65ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 378.81ms IncrementalHoareTripleChecker+Time [2021-11-12 23:42:18,417 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [183 Valid, 479 Invalid, 231 Unknown, 0 Unchecked, 14.65ms Time], IncrementalHoareTripleChecker [5 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 378.81ms Time] [2021-11-12 23:42:18,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2021-11-12 23:42:18,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 226. [2021-11-12 23:42:18,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 107 states have (on average 2.1869158878504673) internal successors, (234), 223 states have internal predecessors, (234), 15 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-12 23:42:18,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 251 transitions. [2021-11-12 23:42:18,502 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 251 transitions. Word has length 4 [2021-11-12 23:42:18,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:42:18,502 INFO L470 AbstractCegarLoop]: Abstraction has 226 states and 251 transitions. [2021-11-12 23:42:18,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 23:42:18,503 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 251 transitions. [2021-11-12 23:42:18,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-12 23:42:18,503 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:42:18,504 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-12 23:42:18,504 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-12 23:42:18,504 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION (and 101 more)] === [2021-11-12 23:42:18,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:42:18,505 INFO L85 PathProgramCache]: Analyzing trace with hash 18345168, now seen corresponding path program 1 times [2021-11-12 23:42:18,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:42:18,506 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393927063] [2021-11-12 23:42:18,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:42:18,507 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:42:18,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:42:18,568 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 23:42:18,568 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:42:18,569 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393927063] [2021-11-12 23:42:18,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393927063] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:42:18,569 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:42:18,569 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-12 23:42:18,570 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45148019] [2021-11-12 23:42:18,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:42:18,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:42:18,572 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:42:18,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:42:18,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:42:18,573 INFO L87 Difference]: Start difference. First operand 226 states and 251 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 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 23:42:18,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:42:18,849 INFO L93 Difference]: Finished difference Result 360 states and 405 transitions. [2021-11-12 23:42:18,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:42:18,850 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 23:42:18,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:42:18,855 INFO L225 Difference]: With dead ends: 360 [2021-11-12 23:42:18,855 INFO L226 Difference]: Without dead ends: 360 [2021-11-12 23:42:18,861 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 23:42:18,864 INFO L933 BasicCegarLoop]: 322 mSDtfsCounter, 148 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 185.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.32ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 242.17ms IncrementalHoareTripleChecker+Time [2021-11-12 23:42:18,865 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [148 Valid, 471 Invalid, 190 Unknown, 0 Unchecked, 11.32ms Time], IncrementalHoareTripleChecker [2 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 242.17ms Time] [2021-11-12 23:42:18,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2021-11-12 23:42:18,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 224. [2021-11-12 23:42:18,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 107 states have (on average 2.1682242990654204) internal successors, (232), 221 states have internal predecessors, (232), 15 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-12 23:42:18,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 249 transitions. [2021-11-12 23:42:18,891 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 249 transitions. Word has length 4 [2021-11-12 23:42:18,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:42:18,892 INFO L470 AbstractCegarLoop]: Abstraction has 224 states and 249 transitions. [2021-11-12 23:42:18,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 23:42:18,892 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 249 transitions. [2021-11-12 23:42:18,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-12 23:42:18,892 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:42:18,893 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-12 23:42:18,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-12 23:42:18,893 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr89ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION (and 101 more)] === [2021-11-12 23:42:18,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:42:18,894 INFO L85 PathProgramCache]: Analyzing trace with hash 568154688, now seen corresponding path program 1 times [2021-11-12 23:42:18,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:42:18,895 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807491485] [2021-11-12 23:42:18,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:42:18,896 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:42:18,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:42:18,958 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 23:42:18,959 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:42:18,959 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807491485] [2021-11-12 23:42:18,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807491485] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:42:18,961 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:42:18,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-12 23:42:18,961 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35212416] [2021-11-12 23:42:18,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:42:18,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:42:18,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:42:18,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:42:18,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:42:18,964 INFO L87 Difference]: Start difference. First operand 224 states and 249 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 23:42:19,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:42:19,186 INFO L93 Difference]: Finished difference Result 349 states and 393 transitions. [2021-11-12 23:42:19,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:42:19,187 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 23:42:19,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:42:19,189 INFO L225 Difference]: With dead ends: 349 [2021-11-12 23:42:19,190 INFO L226 Difference]: Without dead ends: 348 [2021-11-12 23:42:19,190 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 23:42:19,201 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 125 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 163.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.70ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 199.96ms IncrementalHoareTripleChecker+Time [2021-11-12 23:42:19,203 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 311 Invalid, 186 Unknown, 0 Unchecked, 5.70ms Time], IncrementalHoareTripleChecker [0 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 199.96ms Time] [2021-11-12 23:42:19,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2021-11-12 23:42:19,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 227. [2021-11-12 23:42:19,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 110 states have (on average 2.1454545454545455) internal successors, (236), 224 states have internal predecessors, (236), 15 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-12 23:42:19,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 253 transitions. [2021-11-12 23:42:19,234 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 253 transitions. Word has length 5 [2021-11-12 23:42:19,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:42:19,235 INFO L470 AbstractCegarLoop]: Abstraction has 227 states and 253 transitions. [2021-11-12 23:42:19,235 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 23:42:19,235 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 253 transitions. [2021-11-12 23:42:19,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-12 23:42:19,236 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:42:19,236 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-12 23:42:19,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-12 23:42:19,236 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION (and 101 more)] === [2021-11-12 23:42:19,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:42:19,237 INFO L85 PathProgramCache]: Analyzing trace with hash 450363646, now seen corresponding path program 1 times [2021-11-12 23:42:19,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:42:19,238 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744313357] [2021-11-12 23:42:19,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:42:19,238 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:42:19,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:42:19,340 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 23:42:19,340 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:42:19,341 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744313357] [2021-11-12 23:42:19,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744313357] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:42:19,341 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:42:19,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-12 23:42:19,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991009378] [2021-11-12 23:42:19,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:42:19,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:42:19,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:42:19,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:42:19,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:42:19,346 INFO L87 Difference]: Start difference. First operand 227 states and 253 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:42:19,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:42:19,596 INFO L93 Difference]: Finished difference Result 360 states and 404 transitions. [2021-11-12 23:42:19,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:42:19,598 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-12 23:42:19,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:42:19,600 INFO L225 Difference]: With dead ends: 360 [2021-11-12 23:42:19,600 INFO L226 Difference]: Without dead ends: 360 [2021-11-12 23:42:19,601 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 23:42:19,602 INFO L933 BasicCegarLoop]: 318 mSDtfsCounter, 146 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 182.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.13ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 225.77ms IncrementalHoareTripleChecker+Time [2021-11-12 23:42:19,602 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 466 Invalid, 194 Unknown, 0 Unchecked, 5.13ms Time], IncrementalHoareTripleChecker [2 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 225.77ms Time] [2021-11-12 23:42:19,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2021-11-12 23:42:19,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 225. [2021-11-12 23:42:19,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 110 states have (on average 2.1272727272727274) internal successors, (234), 222 states have internal predecessors, (234), 15 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-12 23:42:19,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 251 transitions. [2021-11-12 23:42:19,638 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 251 transitions. Word has length 6 [2021-11-12 23:42:19,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:42:19,639 INFO L470 AbstractCegarLoop]: Abstraction has 225 states and 251 transitions. [2021-11-12 23:42:19,639 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:42:19,639 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 251 transitions. [2021-11-12 23:42:19,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-12 23:42:19,640 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:42:19,640 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-12 23:42:19,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-12 23:42:19,641 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION (and 101 more)] === [2021-11-12 23:42:19,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:42:19,641 INFO L85 PathProgramCache]: Analyzing trace with hash 450363645, now seen corresponding path program 1 times [2021-11-12 23:42:19,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:42:19,644 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039629922] [2021-11-12 23:42:19,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:42:19,645 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:42:19,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:42:19,700 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 23:42:19,700 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:42:19,700 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039629922] [2021-11-12 23:42:19,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039629922] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:42:19,701 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:42:19,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-12 23:42:19,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482167839] [2021-11-12 23:42:19,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:42:19,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:42:19,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:42:19,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:42:19,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:42:19,703 INFO L87 Difference]: Start difference. First operand 225 states and 251 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:42:19,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:42:19,964 INFO L93 Difference]: Finished difference Result 390 states and 440 transitions. [2021-11-12 23:42:19,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:42:19,964 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-12 23:42:19,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:42:19,969 INFO L225 Difference]: With dead ends: 390 [2021-11-12 23:42:19,973 INFO L226 Difference]: Without dead ends: 390 [2021-11-12 23:42:19,973 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 23:42:19,975 INFO L933 BasicCegarLoop]: 333 mSDtfsCounter, 174 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 189.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.54ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 235.22ms IncrementalHoareTripleChecker+Time [2021-11-12 23:42:19,975 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [176 Valid, 474 Invalid, 228 Unknown, 0 Unchecked, 5.54ms Time], IncrementalHoareTripleChecker [5 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 235.22ms Time] [2021-11-12 23:42:19,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2021-11-12 23:42:19,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 223. [2021-11-12 23:42:19,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 110 states have (on average 2.109090909090909) internal successors, (232), 220 states have internal predecessors, (232), 15 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-12 23:42:19,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 249 transitions. [2021-11-12 23:42:19,993 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 249 transitions. Word has length 6 [2021-11-12 23:42:19,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:42:19,999 INFO L470 AbstractCegarLoop]: Abstraction has 223 states and 249 transitions. [2021-11-12 23:42:20,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:42:20,000 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 249 transitions. [2021-11-12 23:42:20,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-12 23:42:20,001 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:42:20,001 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:42:20,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-12 23:42:20,001 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION (and 101 more)] === [2021-11-12 23:42:20,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:42:20,003 INFO L85 PathProgramCache]: Analyzing trace with hash 535440203, now seen corresponding path program 1 times [2021-11-12 23:42:20,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:42:20,004 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123056639] [2021-11-12 23:42:20,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:42:20,004 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:42:20,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:42:20,053 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 23:42:20,053 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:42:20,053 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123056639] [2021-11-12 23:42:20,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123056639] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:42:20,054 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:42:20,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-12 23:42:20,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86908753] [2021-11-12 23:42:20,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:42:20,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:42:20,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:42:20,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:42:20,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:42:20,056 INFO L87 Difference]: Start difference. First operand 223 states and 249 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:42:20,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:42:20,134 INFO L93 Difference]: Finished difference Result 229 states and 253 transitions. [2021-11-12 23:42:20,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:42:20,140 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-12 23:42:20,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:42:20,142 INFO L225 Difference]: With dead ends: 229 [2021-11-12 23:42:20,143 INFO L226 Difference]: Without dead ends: 228 [2021-11-12 23:42:20,143 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 23:42:20,145 INFO L933 BasicCegarLoop]: 215 mSDtfsCounter, 5 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 57.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.84ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 69.25ms IncrementalHoareTripleChecker+Time [2021-11-12 23:42:20,151 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 415 Invalid, 74 Unknown, 0 Unchecked, 1.84ms Time], IncrementalHoareTripleChecker [1 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 69.25ms Time] [2021-11-12 23:42:20,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2021-11-12 23:42:20,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 222. [2021-11-12 23:42:20,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 109 states have (on average 2.110091743119266) internal successors, (230), 219 states have internal predecessors, (230), 15 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-12 23:42:20,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 247 transitions. [2021-11-12 23:42:20,162 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 247 transitions. Word has length 7 [2021-11-12 23:42:20,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:42:20,163 INFO L470 AbstractCegarLoop]: Abstraction has 222 states and 247 transitions. [2021-11-12 23:42:20,163 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:42:20,163 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 247 transitions. [2021-11-12 23:42:20,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-12 23:42:20,164 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:42:20,164 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:42:20,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-12 23:42:20,164 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr89ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION (and 101 more)] === [2021-11-12 23:42:20,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:42:20,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1154009547, now seen corresponding path program 1 times [2021-11-12 23:42:20,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:42:20,166 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515687799] [2021-11-12 23:42:20,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:42:20,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:42:20,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:42:20,252 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:42:20,253 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:42:20,253 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515687799] [2021-11-12 23:42:20,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515687799] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:42:20,254 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:42:20,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-12 23:42:20,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750108611] [2021-11-12 23:42:20,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:42:20,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:42:20,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:42:20,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:42:20,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:42:20,255 INFO L87 Difference]: Start difference. First operand 222 states and 247 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 23:42:20,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:42:20,384 INFO L93 Difference]: Finished difference Result 353 states and 393 transitions. [2021-11-12 23:42:20,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:42:20,384 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 23:42:20,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:42:20,387 INFO L225 Difference]: With dead ends: 353 [2021-11-12 23:42:20,387 INFO L226 Difference]: Without dead ends: 353 [2021-11-12 23:42:20,387 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:42:20,388 INFO L933 BasicCegarLoop]: 204 mSDtfsCounter, 535 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 84.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 537 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.85ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 100.89ms IncrementalHoareTripleChecker+Time [2021-11-12 23:42:20,389 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [537 Valid, 380 Invalid, 99 Unknown, 0 Unchecked, 3.85ms Time], IncrementalHoareTripleChecker [5 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 100.89ms Time] [2021-11-12 23:42:20,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2021-11-12 23:42:20,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 222. [2021-11-12 23:42:20,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 109 states have (on average 2.1009174311926606) internal successors, (229), 219 states have internal predecessors, (229), 15 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-12 23:42:20,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 246 transitions. [2021-11-12 23:42:20,397 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 246 transitions. Word has length 11 [2021-11-12 23:42:20,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:42:20,398 INFO L470 AbstractCegarLoop]: Abstraction has 222 states and 246 transitions. [2021-11-12 23:42:20,398 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 23:42:20,398 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 246 transitions. [2021-11-12 23:42:20,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-12 23:42:20,398 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:42:20,399 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:42:20,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-12 23:42:20,399 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION (and 101 more)] === [2021-11-12 23:42:20,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:42:20,400 INFO L85 PathProgramCache]: Analyzing trace with hash -901980672, now seen corresponding path program 1 times [2021-11-12 23:42:20,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:42:20,400 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446548236] [2021-11-12 23:42:20,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:42:20,400 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:42:20,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:42:20,446 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:42:20,446 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:42:20,446 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446548236] [2021-11-12 23:42:20,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446548236] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:42:20,447 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:42:20,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-12 23:42:20,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013011178] [2021-11-12 23:42:20,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:42:20,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:42:20,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:42:20,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:42:20,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:42:20,449 INFO L87 Difference]: Start difference. First operand 222 states and 246 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:42:20,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:42:20,738 INFO L93 Difference]: Finished difference Result 627 states and 702 transitions. [2021-11-12 23:42:20,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-12 23:42:20,738 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-12 23:42:20,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:42:20,743 INFO L225 Difference]: With dead ends: 627 [2021-11-12 23:42:20,743 INFO L226 Difference]: Without dead ends: 627 [2021-11-12 23:42:20,744 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-12 23:42:20,745 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 1317 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 189.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1319 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.96ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 233.18ms IncrementalHoareTripleChecker+Time [2021-11-12 23:42:20,745 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1319 Valid, 528 Invalid, 193 Unknown, 0 Unchecked, 7.96ms Time], IncrementalHoareTripleChecker [24 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 233.18ms Time] [2021-11-12 23:42:20,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2021-11-12 23:42:20,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 247. [2021-11-12 23:42:20,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 135 states have (on average 2.066666666666667) internal successors, (279), 244 states have internal predecessors, (279), 14 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-12 23:42:20,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 295 transitions. [2021-11-12 23:42:20,759 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 295 transitions. Word has length 13 [2021-11-12 23:42:20,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:42:20,759 INFO L470 AbstractCegarLoop]: Abstraction has 247 states and 295 transitions. [2021-11-12 23:42:20,760 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:42:20,760 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 295 transitions. [2021-11-12 23:42:20,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-12 23:42:20,761 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:42:20,761 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:42:20,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-12 23:42:20,761 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION (and 101 more)] === [2021-11-12 23:42:20,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:42:20,762 INFO L85 PathProgramCache]: Analyzing trace with hash -901991921, now seen corresponding path program 1 times [2021-11-12 23:42:20,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:42:20,762 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296654640] [2021-11-12 23:42:20,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:42:20,763 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:42:20,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:42:20,809 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:42:20,809 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:42:20,810 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296654640] [2021-11-12 23:42:20,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296654640] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:42:20,810 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:42:20,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-12 23:42:20,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158395301] [2021-11-12 23:42:20,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:42:20,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:42:20,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:42:20,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:42:20,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:42:20,812 INFO L87 Difference]: Start difference. First operand 247 states and 295 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 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 23:42:21,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:42:21,264 INFO L93 Difference]: Finished difference Result 403 states and 470 transitions. [2021-11-12 23:42:21,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-12 23:42:21,265 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 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 23:42:21,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:42:21,268 INFO L225 Difference]: With dead ends: 403 [2021-11-12 23:42:21,268 INFO L226 Difference]: Without dead ends: 403 [2021-11-12 23:42:21,268 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-12 23:42:21,269 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 576 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 455 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 323.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 578 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.68ms SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 396.90ms IncrementalHoareTripleChecker+Time [2021-11-12 23:42:21,269 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [578 Valid, 413 Invalid, 494 Unknown, 0 Unchecked, 8.68ms Time], IncrementalHoareTripleChecker [39 Valid, 455 Invalid, 0 Unknown, 0 Unchecked, 396.90ms Time] [2021-11-12 23:42:21,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2021-11-12 23:42:21,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 238. [2021-11-12 23:42:21,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 135 states have (on average 1.9777777777777779) internal successors, (267), 235 states have internal predecessors, (267), 14 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-12 23:42:21,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 283 transitions. [2021-11-12 23:42:21,280 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 283 transitions. Word has length 13 [2021-11-12 23:42:21,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:42:21,281 INFO L470 AbstractCegarLoop]: Abstraction has 238 states and 283 transitions. [2021-11-12 23:42:21,281 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 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 23:42:21,281 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 283 transitions. [2021-11-12 23:42:21,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-12 23:42:21,282 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:42:21,282 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:42:21,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-12 23:42:21,282 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION (and 101 more)] === [2021-11-12 23:42:21,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:42:21,283 INFO L85 PathProgramCache]: Analyzing trace with hash -901991920, now seen corresponding path program 1 times [2021-11-12 23:42:21,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:42:21,283 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005010695] [2021-11-12 23:42:21,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:42:21,284 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:42:21,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:42:21,400 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:42:21,401 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:42:21,401 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005010695] [2021-11-12 23:42:21,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005010695] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:42:21,401 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:42:21,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-12 23:42:21,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440285437] [2021-11-12 23:42:21,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:42:21,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:42:21,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:42:21,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:42:21,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:42:21,403 INFO L87 Difference]: Start difference. First operand 238 states and 283 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 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 23:42:21,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:42:21,902 INFO L93 Difference]: Finished difference Result 534 states and 596 transitions. [2021-11-12 23:42:21,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:42:21,902 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 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 23:42:21,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:42:21,906 INFO L225 Difference]: With dead ends: 534 [2021-11-12 23:42:21,906 INFO L226 Difference]: Without dead ends: 534 [2021-11-12 23:42:21,907 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-12 23:42:21,908 INFO L933 BasicCegarLoop]: 155 mSDtfsCounter, 804 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 357.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 804 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.64ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 431.12ms IncrementalHoareTripleChecker+Time [2021-11-12 23:42:21,908 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [804 Valid, 441 Invalid, 404 Unknown, 0 Unchecked, 7.64ms Time], IncrementalHoareTripleChecker [16 Valid, 388 Invalid, 0 Unknown, 0 Unchecked, 431.12ms Time] [2021-11-12 23:42:21,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2021-11-12 23:42:21,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 258. [2021-11-12 23:42:21,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 155 states have (on average 1.8774193548387097) internal successors, (291), 255 states have internal predecessors, (291), 14 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-12 23:42:21,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 307 transitions. [2021-11-12 23:42:21,922 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 307 transitions. Word has length 13 [2021-11-12 23:42:21,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:42:21,923 INFO L470 AbstractCegarLoop]: Abstraction has 258 states and 307 transitions. [2021-11-12 23:42:21,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 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 23:42:21,923 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 307 transitions. [2021-11-12 23:42:21,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-12 23:42:21,924 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:42:21,925 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:42:21,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-12 23:42:21,925 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION (and 101 more)] === [2021-11-12 23:42:21,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:42:21,926 INFO L85 PathProgramCache]: Analyzing trace with hash -256693872, now seen corresponding path program 1 times [2021-11-12 23:42:21,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:42:21,926 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227019983] [2021-11-12 23:42:21,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:42:21,927 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:42:21,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:42:22,045 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 23:42:22,045 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:42:22,046 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227019983] [2021-11-12 23:42:22,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227019983] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:42:22,046 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:42:22,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-12 23:42:22,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048809375] [2021-11-12 23:42:22,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:42:22,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:42:22,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:42:22,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:42:22,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:42:22,048 INFO L87 Difference]: Start difference. First operand 258 states and 307 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:42:22,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:42:22,263 INFO L93 Difference]: Finished difference Result 332 states and 387 transitions. [2021-11-12 23:42:22,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:42:22,264 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-12 23:42:22,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:42:22,266 INFO L225 Difference]: With dead ends: 332 [2021-11-12 23:42:22,266 INFO L226 Difference]: Without dead ends: 332 [2021-11-12 23:42:22,266 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:42:22,267 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 95 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 158.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.59ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 188.93ms IncrementalHoareTripleChecker+Time [2021-11-12 23:42:22,267 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 662 Invalid, 239 Unknown, 0 Unchecked, 3.59ms Time], IncrementalHoareTripleChecker [1 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 188.93ms Time] [2021-11-12 23:42:22,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2021-11-12 23:42:22,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 257. [2021-11-12 23:42:22,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 155 states have (on average 1.864516129032258) internal successors, (289), 254 states have internal predecessors, (289), 13 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-12 23:42:22,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 304 transitions. [2021-11-12 23:42:22,278 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 304 transitions. Word has length 20 [2021-11-12 23:42:22,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:42:22,279 INFO L470 AbstractCegarLoop]: Abstraction has 257 states and 304 transitions. [2021-11-12 23:42:22,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:42:22,280 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 304 transitions. [2021-11-12 23:42:22,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-12 23:42:22,281 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:42:22,281 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:42:22,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-12 23:42:22,281 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION (and 101 more)] === [2021-11-12 23:42:22,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:42:22,282 INFO L85 PathProgramCache]: Analyzing trace with hash -937110950, now seen corresponding path program 1 times [2021-11-12 23:42:22,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:42:22,282 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637949091] [2021-11-12 23:42:22,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:42:22,282 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:42:22,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:42:22,367 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 23:42:22,367 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:42:22,368 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637949091] [2021-11-12 23:42:22,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637949091] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:42:22,368 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:42:22,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-12 23:42:22,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826664753] [2021-11-12 23:42:22,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:42:22,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:42:22,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:42:22,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:42:22,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:42:22,371 INFO L87 Difference]: Start difference. First operand 257 states and 304 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:42:22,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:42:22,582 INFO L93 Difference]: Finished difference Result 256 states and 301 transitions. [2021-11-12 23:42:22,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:42:22,583 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-12 23:42:22,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:42:22,585 INFO L225 Difference]: With dead ends: 256 [2021-11-12 23:42:22,585 INFO L226 Difference]: Without dead ends: 256 [2021-11-12 23:42:22,585 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:42:22,586 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 18 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 151.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 673 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.57ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 181.50ms IncrementalHoareTripleChecker+Time [2021-11-12 23:42:22,586 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 673 Invalid, 220 Unknown, 0 Unchecked, 3.57ms Time], IncrementalHoareTripleChecker [1 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 181.50ms Time] [2021-11-12 23:42:22,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2021-11-12 23:42:22,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 256. [2021-11-12 23:42:22,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 155 states have (on average 1.8516129032258064) internal successors, (287), 253 states have internal predecessors, (287), 12 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-12 23:42:22,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 301 transitions. [2021-11-12 23:42:22,596 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 301 transitions. Word has length 20 [2021-11-12 23:42:22,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:42:22,596 INFO L470 AbstractCegarLoop]: Abstraction has 256 states and 301 transitions. [2021-11-12 23:42:22,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:42:22,597 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 301 transitions. [2021-11-12 23:42:22,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-12 23:42:22,598 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:42:22,598 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:42:22,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-12 23:42:22,599 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION (and 101 more)] === [2021-11-12 23:42:22,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:42:22,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1946598122, now seen corresponding path program 1 times [2021-11-12 23:42:22,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:42:22,600 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753451164] [2021-11-12 23:42:22,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:42:22,600 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:42:22,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:42:22,702 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:42:22,703 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:42:22,703 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753451164] [2021-11-12 23:42:22,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753451164] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:42:22,703 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:42:22,703 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-12 23:42:22,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916437718] [2021-11-12 23:42:22,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:42:22,704 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-12 23:42:22,704 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:42:22,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-12 23:42:22,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:42:22,706 INFO L87 Difference]: Start difference. First operand 256 states and 301 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:42:23,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:42:23,125 INFO L93 Difference]: Finished difference Result 539 states and 596 transitions. [2021-11-12 23:42:23,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-12 23:42:23,125 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-11-12 23:42:23,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:42:23,129 INFO L225 Difference]: With dead ends: 539 [2021-11-12 23:42:23,129 INFO L226 Difference]: Without dead ends: 539 [2021-11-12 23:42:23,130 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-11-12 23:42:23,130 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 1161 mSDsluCounter, 682 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 274.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1163 SdHoareTripleChecker+Valid, 808 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.35ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 335.87ms IncrementalHoareTripleChecker+Time [2021-11-12 23:42:23,131 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1163 Valid, 808 Invalid, 374 Unknown, 0 Unchecked, 8.35ms Time], IncrementalHoareTripleChecker [19 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 335.87ms Time] [2021-11-12 23:42:23,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2021-11-12 23:42:23,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 256. [2021-11-12 23:42:23,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 155 states have (on average 1.8451612903225807) internal successors, (286), 253 states have internal predecessors, (286), 12 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-12 23:42:23,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 300 transitions. [2021-11-12 23:42:23,142 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 300 transitions. Word has length 23 [2021-11-12 23:42:23,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:42:23,143 INFO L470 AbstractCegarLoop]: Abstraction has 256 states and 300 transitions. [2021-11-12 23:42:23,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:42:23,143 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 300 transitions. [2021-11-12 23:42:23,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-12 23:42:23,144 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:42:23,144 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:42:23,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-12 23:42:23,145 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION (and 101 more)] === [2021-11-12 23:42:23,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:42:23,145 INFO L85 PathProgramCache]: Analyzing trace with hash -479719491, now seen corresponding path program 1 times [2021-11-12 23:42:23,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:42:23,146 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011602065] [2021-11-12 23:42:23,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:42:23,146 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:42:23,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:42:23,209 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:42:23,209 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:42:23,210 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011602065] [2021-11-12 23:42:23,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011602065] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:42:23,210 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:42:23,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-12 23:42:23,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010209002] [2021-11-12 23:42:23,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:42:23,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-12 23:42:23,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:42:23,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-12 23:42:23,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:42:23,212 INFO L87 Difference]: Start difference. First operand 256 states and 300 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:42:23,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:42:23,660 INFO L93 Difference]: Finished difference Result 538 states and 594 transitions. [2021-11-12 23:42:23,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-12 23:42:23,660 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-11-12 23:42:23,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:42:23,664 INFO L225 Difference]: With dead ends: 538 [2021-11-12 23:42:23,664 INFO L226 Difference]: Without dead ends: 538 [2021-11-12 23:42:23,664 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-11-12 23:42:23,665 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 1157 mSDsluCounter, 682 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 314.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1159 SdHoareTripleChecker+Valid, 808 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.13ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 368.48ms IncrementalHoareTripleChecker+Time [2021-11-12 23:42:23,666 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1159 Valid, 808 Invalid, 374 Unknown, 0 Unchecked, 8.13ms Time], IncrementalHoareTripleChecker [19 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 368.48ms Time] [2021-11-12 23:42:23,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2021-11-12 23:42:23,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 256. [2021-11-12 23:42:23,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 155 states have (on average 1.8387096774193548) internal successors, (285), 253 states have internal predecessors, (285), 12 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-12 23:42:23,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 299 transitions. [2021-11-12 23:42:23,677 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 299 transitions. Word has length 23 [2021-11-12 23:42:23,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:42:23,678 INFO L470 AbstractCegarLoop]: Abstraction has 256 states and 299 transitions. [2021-11-12 23:42:23,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:42:23,678 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 299 transitions. [2021-11-12 23:42:23,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-12 23:42:23,683 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:42:23,683 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:42:23,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-12 23:42:23,684 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr26REQUIRES_VIOLATION === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION (and 101 more)] === [2021-11-12 23:42:23,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:42:23,684 INFO L85 PathProgramCache]: Analyzing trace with hash 214784498, now seen corresponding path program 1 times [2021-11-12 23:42:23,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:42:23,684 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143287266] [2021-11-12 23:42:23,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:42:23,685 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:42:23,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:42:23,792 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:42:23,792 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:42:23,792 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143287266] [2021-11-12 23:42:23,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143287266] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:42:23,792 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:42:23,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-12 23:42:23,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682901774] [2021-11-12 23:42:23,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:42:23,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 23:42:23,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:42:23,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 23:42:23,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-12 23:42:23,794 INFO L87 Difference]: Start difference. First operand 256 states and 299 transitions. Second operand has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:42:24,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:42:24,469 INFO L93 Difference]: Finished difference Result 591 states and 662 transitions. [2021-11-12 23:42:24,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-12 23:42:24,470 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-11-12 23:42:24,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:42:24,474 INFO L225 Difference]: With dead ends: 591 [2021-11-12 23:42:24,474 INFO L226 Difference]: Without dead ends: 591 [2021-11-12 23:42:24,476 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:42:24,478 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 1298 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 661 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 467.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1300 SdHoareTripleChecker+Valid, 633 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.19ms SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 565.99ms IncrementalHoareTripleChecker+Time [2021-11-12 23:42:24,478 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1300 Valid, 633 Invalid, 708 Unknown, 0 Unchecked, 9.19ms Time], IncrementalHoareTripleChecker [47 Valid, 661 Invalid, 0 Unknown, 0 Unchecked, 565.99ms Time] [2021-11-12 23:42:24,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2021-11-12 23:42:24,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 257. [2021-11-12 23:42:24,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 156 states have (on average 1.8397435897435896) internal successors, (287), 254 states have internal predecessors, (287), 12 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-12 23:42:24,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 301 transitions. [2021-11-12 23:42:24,492 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 301 transitions. Word has length 24 [2021-11-12 23:42:24,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:42:24,492 INFO L470 AbstractCegarLoop]: Abstraction has 257 states and 301 transitions. [2021-11-12 23:42:24,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:42:24,492 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 301 transitions. [2021-11-12 23:42:24,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-12 23:42:24,493 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:42:24,493 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:42:24,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-12 23:42:24,494 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr27REQUIRES_VIOLATION === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION (and 101 more)] === [2021-11-12 23:42:24,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:42:24,495 INFO L85 PathProgramCache]: Analyzing trace with hash 214784499, now seen corresponding path program 1 times [2021-11-12 23:42:24,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:42:24,495 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273183056] [2021-11-12 23:42:24,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:42:24,495 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:42:24,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:42:24,658 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:42:24,658 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:42:24,658 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273183056] [2021-11-12 23:42:24,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273183056] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:42:24,661 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:42:24,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-12 23:42:24,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79341522] [2021-11-12 23:42:24,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:42:24,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-12 23:42:24,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:42:24,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-12 23:42:24,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:42:24,663 INFO L87 Difference]: Start difference. First operand 257 states and 301 transitions. Second operand has 7 states, 6 states have (on average 4.0) internal successors, (24), 7 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:42:25,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:42:25,400 INFO L93 Difference]: Finished difference Result 596 states and 660 transitions. [2021-11-12 23:42:25,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-12 23:42:25,400 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 7 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-11-12 23:42:25,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:42:25,403 INFO L225 Difference]: With dead ends: 596 [2021-11-12 23:42:25,404 INFO L226 Difference]: Without dead ends: 596 [2021-11-12 23:42:25,404 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-11-12 23:42:25,405 INFO L933 BasicCegarLoop]: 149 mSDtfsCounter, 1061 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 515.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1061 SdHoareTripleChecker+Valid, 670 SdHoareTripleChecker+Invalid, 640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.47ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 606.83ms IncrementalHoareTripleChecker+Time [2021-11-12 23:42:25,405 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1061 Valid, 670 Invalid, 640 Unknown, 0 Unchecked, 8.47ms Time], IncrementalHoareTripleChecker [15 Valid, 625 Invalid, 0 Unknown, 0 Unchecked, 606.83ms Time] [2021-11-12 23:42:25,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2021-11-12 23:42:25,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 257. [2021-11-12 23:42:25,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 156 states have (on average 1.8333333333333333) internal successors, (286), 254 states have internal predecessors, (286), 12 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-12 23:42:25,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 300 transitions. [2021-11-12 23:42:25,416 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 300 transitions. Word has length 24 [2021-11-12 23:42:25,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:42:25,417 INFO L470 AbstractCegarLoop]: Abstraction has 257 states and 300 transitions. [2021-11-12 23:42:25,417 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 7 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:42:25,417 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 300 transitions. [2021-11-12 23:42:25,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-12 23:42:25,418 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:42:25,418 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:42:25,418 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-12 23:42:25,418 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATION === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION (and 101 more)] === [2021-11-12 23:42:25,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:42:25,419 INFO L85 PathProgramCache]: Analyzing trace with hash -1986692204, now seen corresponding path program 1 times [2021-11-12 23:42:25,419 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:42:25,419 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789308415] [2021-11-12 23:42:25,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:42:25,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:42:25,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:42:25,495 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:42:25,495 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:42:25,495 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789308415] [2021-11-12 23:42:25,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789308415] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:42:25,496 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:42:25,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-12 23:42:25,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277199731] [2021-11-12 23:42:25,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:42:25,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 23:42:25,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:42:25,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 23:42:25,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-12 23:42:25,498 INFO L87 Difference]: Start difference. First operand 257 states and 300 transitions. Second operand has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:42:26,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:42:26,170 INFO L93 Difference]: Finished difference Result 589 states and 660 transitions. [2021-11-12 23:42:26,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-12 23:42:26,171 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-11-12 23:42:26,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:42:26,174 INFO L225 Difference]: With dead ends: 589 [2021-11-12 23:42:26,175 INFO L226 Difference]: Without dead ends: 589 [2021-11-12 23:42:26,175 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:42:26,176 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 1288 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 661 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 479.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1290 SdHoareTripleChecker+Valid, 633 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.60ms SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 570.22ms IncrementalHoareTripleChecker+Time [2021-11-12 23:42:26,176 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1290 Valid, 633 Invalid, 708 Unknown, 0 Unchecked, 8.60ms Time], IncrementalHoareTripleChecker [47 Valid, 661 Invalid, 0 Unknown, 0 Unchecked, 570.22ms Time] [2021-11-12 23:42:26,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2021-11-12 23:42:26,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 257. [2021-11-12 23:42:26,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 156 states have (on average 1.8269230769230769) internal successors, (285), 254 states have internal predecessors, (285), 12 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-12 23:42:26,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 299 transitions. [2021-11-12 23:42:26,188 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 299 transitions. Word has length 24 [2021-11-12 23:42:26,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:42:26,188 INFO L470 AbstractCegarLoop]: Abstraction has 257 states and 299 transitions. [2021-11-12 23:42:26,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:42:26,189 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 299 transitions. [2021-11-12 23:42:26,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-12 23:42:26,193 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:42:26,193 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:42:26,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-12 23:42:26,193 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATION === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION (and 101 more)] === [2021-11-12 23:42:26,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:42:26,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1986692203, now seen corresponding path program 1 times [2021-11-12 23:42:26,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:42:26,194 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764825820] [2021-11-12 23:42:26,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:42:26,195 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:42:26,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:42:26,308 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:42:26,309 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:42:26,309 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764825820] [2021-11-12 23:42:26,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764825820] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:42:26,309 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:42:26,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-12 23:42:26,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166389221] [2021-11-12 23:42:26,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:42:26,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-12 23:42:26,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:42:26,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-12 23:42:26,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:42:26,313 INFO L87 Difference]: Start difference. First operand 257 states and 299 transitions. Second operand has 7 states, 6 states have (on average 4.0) internal successors, (24), 7 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:42:27,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:42:27,000 INFO L93 Difference]: Finished difference Result 594 states and 658 transitions. [2021-11-12 23:42:27,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-12 23:42:27,001 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 7 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-11-12 23:42:27,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:42:27,005 INFO L225 Difference]: With dead ends: 594 [2021-11-12 23:42:27,005 INFO L226 Difference]: Without dead ends: 594 [2021-11-12 23:42:27,006 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-11-12 23:42:27,006 INFO L933 BasicCegarLoop]: 149 mSDtfsCounter, 1053 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 479.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1053 SdHoareTripleChecker+Valid, 670 SdHoareTripleChecker+Invalid, 640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.73ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 569.65ms IncrementalHoareTripleChecker+Time [2021-11-12 23:42:27,007 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1053 Valid, 670 Invalid, 640 Unknown, 0 Unchecked, 6.73ms Time], IncrementalHoareTripleChecker [15 Valid, 625 Invalid, 0 Unknown, 0 Unchecked, 569.65ms Time] [2021-11-12 23:42:27,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2021-11-12 23:42:27,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 257. [2021-11-12 23:42:27,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 156 states have (on average 1.8205128205128205) internal successors, (284), 254 states have internal predecessors, (284), 12 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-12 23:42:27,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 298 transitions. [2021-11-12 23:42:27,017 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 298 transitions. Word has length 24 [2021-11-12 23:42:27,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:42:27,018 INFO L470 AbstractCegarLoop]: Abstraction has 257 states and 298 transitions. [2021-11-12 23:42:27,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 7 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:42:27,018 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 298 transitions. [2021-11-12 23:42:27,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-12 23:42:27,019 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:42:27,019 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:42:27,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-12 23:42:27,020 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION (and 101 more)] === [2021-11-12 23:42:27,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:42:27,020 INFO L85 PathProgramCache]: Analyzing trace with hash -856061257, now seen corresponding path program 1 times [2021-11-12 23:42:27,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:42:27,021 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744714683] [2021-11-12 23:42:27,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:42:27,021 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:42:27,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 23:42:27,038 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-12 23:42:27,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 23:42:27,084 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-12 23:42:27,084 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-12 23:42:27,085 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location failErr0ASSERT_VIOLATIONMEMORY_LEAK (104 of 105 remaining) [2021-11-12 23:42:27,087 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location merge_single_nodeErr0REQUIRES_VIOLATION (103 of 105 remaining) [2021-11-12 23:42:27,087 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location merge_single_nodeErr1REQUIRES_VIOLATION (102 of 105 remaining) [2021-11-12 23:42:27,088 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location merge_single_nodeErr2REQUIRES_VIOLATION (101 of 105 remaining) [2021-11-12 23:42:27,088 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location merge_single_nodeErr3REQUIRES_VIOLATION (100 of 105 remaining) [2021-11-12 23:42:27,088 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location merge_single_nodeErr4REQUIRES_VIOLATION (99 of 105 remaining) [2021-11-12 23:42:27,088 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location merge_single_nodeErr5REQUIRES_VIOLATION (98 of 105 remaining) [2021-11-12 23:42:27,089 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location merge_single_nodeErr6REQUIRES_VIOLATION (97 of 105 remaining) [2021-11-12 23:42:27,089 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location merge_single_nodeErr7REQUIRES_VIOLATION (96 of 105 remaining) [2021-11-12 23:42:27,089 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location merge_single_nodeErr8REQUIRES_VIOLATION (95 of 105 remaining) [2021-11-12 23:42:27,089 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location merge_single_nodeErr9REQUIRES_VIOLATION (94 of 105 remaining) [2021-11-12 23:42:27,089 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location merge_single_nodeErr10REQUIRES_VIOLATION (93 of 105 remaining) [2021-11-12 23:42:27,090 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location merge_single_nodeErr11REQUIRES_VIOLATION (92 of 105 remaining) [2021-11-12 23:42:27,090 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location merge_single_nodeErr12REQUIRES_VIOLATION (91 of 105 remaining) [2021-11-12 23:42:27,090 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location merge_single_nodeErr13REQUIRES_VIOLATION (90 of 105 remaining) [2021-11-12 23:42:27,090 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION (89 of 105 remaining) [2021-11-12 23:42:27,090 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION (88 of 105 remaining) [2021-11-12 23:42:27,091 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION (87 of 105 remaining) [2021-11-12 23:42:27,091 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION (86 of 105 remaining) [2021-11-12 23:42:27,091 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION (85 of 105 remaining) [2021-11-12 23:42:27,091 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION (84 of 105 remaining) [2021-11-12 23:42:27,091 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION (83 of 105 remaining) [2021-11-12 23:42:27,092 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION (82 of 105 remaining) [2021-11-12 23:42:27,092 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATION (81 of 105 remaining) [2021-11-12 23:42:27,092 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATION (80 of 105 remaining) [2021-11-12 23:42:27,092 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATION (79 of 105 remaining) [2021-11-12 23:42:27,092 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATION (78 of 105 remaining) [2021-11-12 23:42:27,093 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATION (77 of 105 remaining) [2021-11-12 23:42:27,093 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATION (76 of 105 remaining) [2021-11-12 23:42:27,093 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATION (75 of 105 remaining) [2021-11-12 23:42:27,093 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATION (74 of 105 remaining) [2021-11-12 23:42:27,094 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATION (73 of 105 remaining) [2021-11-12 23:42:27,094 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATION (72 of 105 remaining) [2021-11-12 23:42:27,094 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATION (71 of 105 remaining) [2021-11-12 23:42:27,094 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATION (70 of 105 remaining) [2021-11-12 23:42:27,094 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATION (69 of 105 remaining) [2021-11-12 23:42:27,095 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATION (68 of 105 remaining) [2021-11-12 23:42:27,095 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22REQUIRES_VIOLATION (67 of 105 remaining) [2021-11-12 23:42:27,095 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATION (66 of 105 remaining) [2021-11-12 23:42:27,095 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24REQUIRES_VIOLATION (65 of 105 remaining) [2021-11-12 23:42:27,095 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25REQUIRES_VIOLATION (64 of 105 remaining) [2021-11-12 23:42:27,096 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26REQUIRES_VIOLATION (63 of 105 remaining) [2021-11-12 23:42:27,096 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27REQUIRES_VIOLATION (62 of 105 remaining) [2021-11-12 23:42:27,096 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28REQUIRES_VIOLATION (61 of 105 remaining) [2021-11-12 23:42:27,096 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr29REQUIRES_VIOLATION (60 of 105 remaining) [2021-11-12 23:42:27,096 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr30REQUIRES_VIOLATION (59 of 105 remaining) [2021-11-12 23:42:27,097 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr31REQUIRES_VIOLATION (58 of 105 remaining) [2021-11-12 23:42:27,097 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr32REQUIRES_VIOLATION (57 of 105 remaining) [2021-11-12 23:42:27,097 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr33REQUIRES_VIOLATION (56 of 105 remaining) [2021-11-12 23:42:27,097 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr34REQUIRES_VIOLATION (55 of 105 remaining) [2021-11-12 23:42:27,097 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr35REQUIRES_VIOLATION (54 of 105 remaining) [2021-11-12 23:42:27,098 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr36REQUIRES_VIOLATION (53 of 105 remaining) [2021-11-12 23:42:27,098 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr37REQUIRES_VIOLATION (52 of 105 remaining) [2021-11-12 23:42:27,098 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr38REQUIRES_VIOLATION (51 of 105 remaining) [2021-11-12 23:42:27,098 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr39REQUIRES_VIOLATION (50 of 105 remaining) [2021-11-12 23:42:27,098 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr40REQUIRES_VIOLATION (49 of 105 remaining) [2021-11-12 23:42:27,099 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr41REQUIRES_VIOLATION (48 of 105 remaining) [2021-11-12 23:42:27,099 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr42REQUIRES_VIOLATION (47 of 105 remaining) [2021-11-12 23:42:27,099 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr43REQUIRES_VIOLATION (46 of 105 remaining) [2021-11-12 23:42:27,099 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr44REQUIRES_VIOLATION (45 of 105 remaining) [2021-11-12 23:42:27,099 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr45REQUIRES_VIOLATION (44 of 105 remaining) [2021-11-12 23:42:27,100 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr46REQUIRES_VIOLATION (43 of 105 remaining) [2021-11-12 23:42:27,100 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr47REQUIRES_VIOLATION (42 of 105 remaining) [2021-11-12 23:42:27,100 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr48REQUIRES_VIOLATION (41 of 105 remaining) [2021-11-12 23:42:27,100 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr49REQUIRES_VIOLATION (40 of 105 remaining) [2021-11-12 23:42:27,101 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr50REQUIRES_VIOLATION (39 of 105 remaining) [2021-11-12 23:42:27,101 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr51REQUIRES_VIOLATION (38 of 105 remaining) [2021-11-12 23:42:27,101 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr52REQUIRES_VIOLATION (37 of 105 remaining) [2021-11-12 23:42:27,101 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr53REQUIRES_VIOLATION (36 of 105 remaining) [2021-11-12 23:42:27,101 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr54REQUIRES_VIOLATION (35 of 105 remaining) [2021-11-12 23:42:27,102 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr55REQUIRES_VIOLATION (34 of 105 remaining) [2021-11-12 23:42:27,102 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr56REQUIRES_VIOLATION (33 of 105 remaining) [2021-11-12 23:42:27,102 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr57REQUIRES_VIOLATION (32 of 105 remaining) [2021-11-12 23:42:27,102 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr58REQUIRES_VIOLATION (31 of 105 remaining) [2021-11-12 23:42:27,102 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr59REQUIRES_VIOLATION (30 of 105 remaining) [2021-11-12 23:42:27,103 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr60REQUIRES_VIOLATION (29 of 105 remaining) [2021-11-12 23:42:27,103 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr61REQUIRES_VIOLATION (28 of 105 remaining) [2021-11-12 23:42:27,103 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr62REQUIRES_VIOLATION (27 of 105 remaining) [2021-11-12 23:42:27,103 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr63REQUIRES_VIOLATION (26 of 105 remaining) [2021-11-12 23:42:27,103 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr64ASSERT_VIOLATIONMEMORY_FREE (25 of 105 remaining) [2021-11-12 23:42:27,104 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr65ASSERT_VIOLATIONMEMORY_FREE (24 of 105 remaining) [2021-11-12 23:42:27,104 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr66ASSERT_VIOLATIONMEMORY_FREE (23 of 105 remaining) [2021-11-12 23:42:27,104 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr67REQUIRES_VIOLATION (22 of 105 remaining) [2021-11-12 23:42:27,104 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr68REQUIRES_VIOLATION (21 of 105 remaining) [2021-11-12 23:42:27,105 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr69REQUIRES_VIOLATION (20 of 105 remaining) [2021-11-12 23:42:27,105 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr70REQUIRES_VIOLATION (19 of 105 remaining) [2021-11-12 23:42:27,105 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr71REQUIRES_VIOLATION (18 of 105 remaining) [2021-11-12 23:42:27,105 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr72REQUIRES_VIOLATION (17 of 105 remaining) [2021-11-12 23:42:27,105 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr73REQUIRES_VIOLATION (16 of 105 remaining) [2021-11-12 23:42:27,106 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr74REQUIRES_VIOLATION (15 of 105 remaining) [2021-11-12 23:42:27,106 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr75REQUIRES_VIOLATION (14 of 105 remaining) [2021-11-12 23:42:27,106 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr76REQUIRES_VIOLATION (13 of 105 remaining) [2021-11-12 23:42:27,106 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr77REQUIRES_VIOLATION (12 of 105 remaining) [2021-11-12 23:42:27,106 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr78REQUIRES_VIOLATION (11 of 105 remaining) [2021-11-12 23:42:27,107 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr79REQUIRES_VIOLATION (10 of 105 remaining) [2021-11-12 23:42:27,107 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr80REQUIRES_VIOLATION (9 of 105 remaining) [2021-11-12 23:42:27,107 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr81ASSERT_VIOLATIONMEMORY_FREE (8 of 105 remaining) [2021-11-12 23:42:27,107 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr82ASSERT_VIOLATIONMEMORY_FREE (7 of 105 remaining) [2021-11-12 23:42:27,108 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr83ASSERT_VIOLATIONMEMORY_FREE (6 of 105 remaining) [2021-11-12 23:42:27,108 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr84REQUIRES_VIOLATION (5 of 105 remaining) [2021-11-12 23:42:27,108 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr85REQUIRES_VIOLATION (4 of 105 remaining) [2021-11-12 23:42:27,108 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr86ASSERT_VIOLATIONMEMORY_FREE (3 of 105 remaining) [2021-11-12 23:42:27,108 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr87ASSERT_VIOLATIONMEMORY_FREE (2 of 105 remaining) [2021-11-12 23:42:27,109 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr88ASSERT_VIOLATIONMEMORY_FREE (1 of 105 remaining) [2021-11-12 23:42:27,109 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr89ASSERT_VIOLATIONMEMORY_LEAK (0 of 105 remaining) [2021-11-12 23:42:27,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-12 23:42:27,113 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:42:27,118 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-12 23:42:27,140 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230) at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.translateProgramExecution(InlinerBacktranslator.java:203) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:216) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:206) at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getProgramExecutionAsString(CounterExampleResult.java:155) at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getLongDescription(CounterExampleResult.java:134) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportLocationResults(TraceAbstractionStarter.java:586) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:181) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-12 23:42:27,143 INFO L158 Benchmark]: Toolchain (without parser) took 11716.01ms. Allocated memory was 92.3MB in the beginning and 169.9MB in the end (delta: 77.6MB). Free memory was 60.3MB in the beginning and 57.2MB in the end (delta: 3.1MB). Peak memory consumption was 82.0MB. Max. memory is 16.1GB. [2021-11-12 23:42:27,144 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 92.3MB. Free memory was 59.5MB in the beginning and 59.4MB in the end (delta: 41.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:42:27,144 INFO L158 Benchmark]: CACSL2BoogieTranslator took 682.78ms. Allocated memory is still 92.3MB. Free memory was 60.0MB in the beginning and 42.3MB in the end (delta: 17.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-11-12 23:42:27,145 INFO L158 Benchmark]: Boogie Procedure Inliner took 97.06ms. Allocated memory is still 92.3MB. Free memory was 42.3MB in the beginning and 39.7MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-12 23:42:27,145 INFO L158 Benchmark]: Boogie Preprocessor took 83.86ms. Allocated memory is still 92.3MB. Free memory was 39.6MB in the beginning and 37.0MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-12 23:42:27,146 INFO L158 Benchmark]: RCFGBuilder took 1215.83ms. Allocated memory was 92.3MB in the beginning and 132.1MB in the end (delta: 39.8MB). Free memory was 36.9MB in the beginning and 75.4MB in the end (delta: -38.5MB). Peak memory consumption was 14.5MB. Max. memory is 16.1GB. [2021-11-12 23:42:27,146 INFO L158 Benchmark]: TraceAbstraction took 9625.50ms. Allocated memory was 132.1MB in the beginning and 169.9MB in the end (delta: 37.7MB). Free memory was 74.6MB in the beginning and 57.2MB in the end (delta: 17.4MB). Peak memory consumption was 54.9MB. Max. memory is 16.1GB. [2021-11-12 23:42:27,149 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 92.3MB. Free memory was 59.5MB in the beginning and 59.4MB in the end (delta: 41.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 682.78ms. Allocated memory is still 92.3MB. Free memory was 60.0MB in the beginning and 42.3MB in the end (delta: 17.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 97.06ms. Allocated memory is still 92.3MB. Free memory was 42.3MB in the beginning and 39.7MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 83.86ms. Allocated memory is still 92.3MB. Free memory was 39.6MB in the beginning and 37.0MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1215.83ms. Allocated memory was 92.3MB in the beginning and 132.1MB in the end (delta: 39.8MB). Free memory was 36.9MB in the beginning and 75.4MB in the end (delta: -38.5MB). Peak memory consumption was 14.5MB. Max. memory is 16.1GB. * TraceAbstraction took 9625.50ms. Allocated memory was 132.1MB in the beginning and 169.9MB in the end (delta: 37.7MB). Free memory was 74.6MB in the beginning and 57.2MB in the end (delta: 17.4MB). Peak memory consumption was 54.9MB. 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 - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-12 23:42:27,200 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/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_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/heap-manipulation/merge_sort-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/config/svcomp-MemCleanup-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/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-memcleanup) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 15d1d7d49ed223522c6431664b8ff836ebc81296f5e11773e2197361bd8b13cf --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:42:29,843 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:42:29,845 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:42:29,880 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:42:29,882 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:42:29,886 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:42:29,890 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:42:29,893 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:42:29,897 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:42:29,905 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:42:29,907 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:42:29,909 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:42:29,911 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:42:29,913 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:42:29,916 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:42:29,919 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:42:29,922 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:42:29,923 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:42:29,928 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:42:29,934 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:42:29,937 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:42:29,939 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:42:29,942 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:42:29,945 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:42:29,957 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:42:29,957 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:42:29,958 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:42:29,960 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:42:29,961 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:42:29,962 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:42:29,964 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:42:29,965 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:42:29,967 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:42:29,968 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:42:29,970 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:42:29,970 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:42:29,971 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:42:29,972 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:42:29,972 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:42:29,974 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:42:29,975 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:42:29,981 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/config/svcomp-MemCleanup-32bit-Taipan_Bitvector.epf [2021-11-12 23:42:30,058 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:42:30,059 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:42:30,060 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:42:30,061 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:42:30,061 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:42:30,061 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:42:30,062 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:42:30,062 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:42:30,062 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:42:30,063 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:42:30,065 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-12 23:42:30,065 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-12 23:42:30,066 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:42:30,066 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 23:42:30,067 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-12 23:42:30,067 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 23:42:30,067 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 23:42:30,067 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:42:30,068 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-12 23:42:30,068 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-12 23:42:30,068 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:42:30,069 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:42:30,069 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 23:42:30,069 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 23:42:30,070 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 23:42:30,070 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:42:30,070 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:42:30,071 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 23:42:30,071 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:42:30,071 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:42:30,072 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:42:30,072 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:42:30,073 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 23:42:30,073 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 23:42:30,074 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:42:30,074 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:42:30,074 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 15d1d7d49ed223522c6431664b8ff836ebc81296f5e11773e2197361bd8b13cf [2021-11-12 23:42:30,500 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:42:30,537 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:42:30,541 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:42:30,542 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:42:30,543 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:42:30,545 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/heap-manipulation/merge_sort-1.i [2021-11-12 23:42:30,629 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/data/02d7e8fea/321b404657b14c25940c16c9bf896f20/FLAG296c2c932 [2021-11-12 23:42:31,389 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:42:31,390 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/sv-benchmarks/c/heap-manipulation/merge_sort-1.i [2021-11-12 23:42:31,404 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/data/02d7e8fea/321b404657b14c25940c16c9bf896f20/FLAG296c2c932 [2021-11-12 23:42:31,620 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/data/02d7e8fea/321b404657b14c25940c16c9bf896f20 [2021-11-12 23:42:31,625 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:42:31,627 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:42:31,631 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:42:31,632 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:42:31,636 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:42:31,637 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:42:31" (1/1) ... [2021-11-12 23:42:31,640 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ff571a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:42:31, skipping insertion in model container [2021-11-12 23:42:31,641 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:42:31" (1/1) ... [2021-11-12 23:42:31,649 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:42:31,722 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:42:32,148 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_cc8e9269-661f-4483-abbf-8ae721f43333/sv-benchmarks/c/heap-manipulation/merge_sort-1.i[22632,22645] [2021-11-12 23:42:32,219 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:42:32,247 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 23:42:32,285 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_cc8e9269-661f-4483-abbf-8ae721f43333/sv-benchmarks/c/heap-manipulation/merge_sort-1.i[22632,22645] [2021-11-12 23:42:32,328 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:42:32,385 INFO L208 MainTranslator]: Completed translation [2021-11-12 23:42:32,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:42:32 WrapperNode [2021-11-12 23:42:32,386 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:42:32,388 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 23:42:32,388 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 23:42:32,388 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 23:42:32,396 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:42:32" (1/1) ... [2021-11-12 23:42:32,424 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:42:32" (1/1) ... [2021-11-12 23:42:32,462 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 23:42:32,463 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 23:42:32,463 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 23:42:32,463 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 23:42:32,473 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:42:32" (1/1) ... [2021-11-12 23:42:32,473 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:42:32" (1/1) ... [2021-11-12 23:42:32,481 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:42:32" (1/1) ... [2021-11-12 23:42:32,481 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:42:32" (1/1) ... [2021-11-12 23:42:32,498 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:42:32" (1/1) ... [2021-11-12 23:42:32,508 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:42:32" (1/1) ... [2021-11-12 23:42:32,511 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:42:32" (1/1) ... [2021-11-12 23:42:32,517 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 23:42:32,519 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 23:42:32,519 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 23:42:32,519 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 23:42:32,520 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:42:32" (1/1) ... [2021-11-12 23:42:32,528 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:42:32,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:42:32,596 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 23:42:32,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 23:42:32,652 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-12 23:42:32,652 INFO L130 BoogieDeclarations]: Found specification of procedure merge_single_node [2021-11-12 23:42:32,653 INFO L138 BoogieDeclarations]: Found implementation of procedure merge_single_node [2021-11-12 23:42:32,653 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2021-11-12 23:42:32,653 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2021-11-12 23:42:32,653 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-12 23:42:32,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-12 23:42:32,654 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 23:42:32,654 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-12 23:42:32,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-12 23:42:32,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 23:42:32,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 23:42:32,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 23:42:32,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 23:42:34,044 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 23:42:34,044 INFO L299 CfgBuilder]: Removed 33 assume(true) statements. [2021-11-12 23:42:34,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:42:34 BoogieIcfgContainer [2021-11-12 23:42:34,047 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 23:42:34,049 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 23:42:34,049 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 23:42:34,052 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 23:42:34,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:42:31" (1/3) ... [2021-11-12 23:42:34,053 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2635e395 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:42:34, skipping insertion in model container [2021-11-12 23:42:34,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:42:32" (2/3) ... [2021-11-12 23:42:34,053 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2635e395 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:42:34, skipping insertion in model container [2021-11-12 23:42:34,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:42:34" (3/3) ... [2021-11-12 23:42:34,055 INFO L111 eAbstractionObserver]: Analyzing ICFG merge_sort-1.i [2021-11-12 23:42:34,060 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 23:42:34,061 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 105 error locations. [2021-11-12 23:42:34,107 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 23:42:34,114 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 23:42:34,114 INFO L340 AbstractCegarLoop]: Starting to check reachability of 105 error locations. [2021-11-12 23:42:34,135 INFO L276 IsEmpty]: Start isEmpty. Operand has 260 states, 137 states have (on average 2.2116788321167884) internal successors, (303), 257 states have internal predecessors, (303), 15 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-12 23:42:34,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-12 23:42:34,141 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:42:34,142 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-12 23:42:34,143 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr89ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION (and 101 more)] === [2021-11-12 23:42:34,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:42:34,149 INFO L85 PathProgramCache]: Analyzing trace with hash 56402904, now seen corresponding path program 1 times [2021-11-12 23:42:34,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:42:34,164 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [286298285] [2021-11-12 23:42:34,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:42:34,165 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:42:34,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:42:34,167 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:42:34,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 23:42:34,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:42:34,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-12 23:42:34,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:42:34,293 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 23:42:34,293 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:42:34,306 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 23:42:34,307 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:42:34,307 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [286298285] [2021-11-12 23:42:34,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [286298285] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:42:34,308 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:42:34,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-12 23:42:34,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188567758] [2021-11-12 23:42:34,311 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:42:34,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-12 23:42:34,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:42:34,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-12 23:42:34,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 23:42:34,346 INFO L87 Difference]: Start difference. First operand has 260 states, 137 states have (on average 2.2116788321167884) internal successors, (303), 257 states have internal predecessors, (303), 15 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:42:34,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:42:34,382 INFO L93 Difference]: Finished difference Result 258 states and 283 transitions. [2021-11-12 23:42:34,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-12 23:42:34,384 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-12 23:42:34,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:42:34,397 INFO L225 Difference]: With dead ends: 258 [2021-11-12 23:42:34,397 INFO L226 Difference]: Without dead ends: 256 [2021-11-12 23:42:34,399 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 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 23:42:34,403 INFO L933 BasicCegarLoop]: 283 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.46ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-12 23:42:34,404 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 3.46ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-12 23:42:34,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2021-11-12 23:42:34,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 256. [2021-11-12 23:42:34,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 135 states have (on average 1.9555555555555555) internal successors, (264), 253 states have internal predecessors, (264), 15 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-12 23:42:34,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 281 transitions. [2021-11-12 23:42:34,462 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 281 transitions. Word has length 5 [2021-11-12 23:42:34,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:42:34,463 INFO L470 AbstractCegarLoop]: Abstraction has 256 states and 281 transitions. [2021-11-12 23:42:34,463 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:42:34,464 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 281 transitions. [2021-11-12 23:42:34,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-12 23:42:34,464 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:42:34,464 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-12 23:42:34,474 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-12 23:42:34,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:42:34,672 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr89ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION (and 101 more)] === [2021-11-12 23:42:34,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:42:34,673 INFO L85 PathProgramCache]: Analyzing trace with hash 56374074, now seen corresponding path program 1 times [2021-11-12 23:42:34,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:42:34,674 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1359598736] [2021-11-12 23:42:34,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:42:34,674 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:42:34,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:42:34,680 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:42:34,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 23:42:34,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:42:34,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:42:34,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:42:34,788 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 23:42:34,789 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:42:34,838 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 23:42:34,838 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:42:34,839 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1359598736] [2021-11-12 23:42:34,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1359598736] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:42:34,840 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:42:34,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-12 23:42:34,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915904896] [2021-11-12 23:42:34,842 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:42:34,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:42:34,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:42:34,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:42:34,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:42:34,850 INFO L87 Difference]: Start difference. First operand 256 states and 281 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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 23:42:35,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:42:35,576 INFO L93 Difference]: Finished difference Result 388 states and 432 transitions. [2021-11-12 23:42:35,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:42:35,578 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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 23:42:35,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:42:35,582 INFO L225 Difference]: With dead ends: 388 [2021-11-12 23:42:35,582 INFO L226 Difference]: Without dead ends: 387 [2021-11-12 23:42:35,582 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:42:35,584 INFO L933 BasicCegarLoop]: 233 mSDtfsCounter, 133 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 519.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.06ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 688.67ms IncrementalHoareTripleChecker+Time [2021-11-12 23:42:35,585 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [133 Valid, 392 Invalid, 169 Unknown, 0 Unchecked, 7.06ms Time], IncrementalHoareTripleChecker [0 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 688.67ms Time] [2021-11-12 23:42:35,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2021-11-12 23:42:35,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 258. [2021-11-12 23:42:35,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 137 states have (on average 1.948905109489051) internal successors, (267), 255 states have internal predecessors, (267), 15 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-12 23:42:35,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 284 transitions. [2021-11-12 23:42:35,612 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 284 transitions. Word has length 5 [2021-11-12 23:42:35,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:42:35,612 INFO L470 AbstractCegarLoop]: Abstraction has 258 states and 284 transitions. [2021-11-12 23:42:35,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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 23:42:35,613 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 284 transitions. [2021-11-12 23:42:35,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-12 23:42:35,613 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:42:35,614 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-12 23:42:35,628 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-12 23:42:35,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:42:35,825 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION (and 101 more)] === [2021-11-12 23:42:35,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:42:35,825 INFO L85 PathProgramCache]: Analyzing trace with hash 56374664, now seen corresponding path program 1 times [2021-11-12 23:42:35,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:42:35,826 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1339362203] [2021-11-12 23:42:35,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:42:35,827 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:42:35,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:42:35,828 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:42:35,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 23:42:35,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:42:35,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:42:35,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:42:35,928 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 23:42:35,940 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 23:42:35,941 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:42:35,962 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 23:42:35,962 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:42:35,962 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1339362203] [2021-11-12 23:42:35,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1339362203] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:42:35,963 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:42:35,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-12 23:42:35,963 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070141640] [2021-11-12 23:42:35,964 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:42:35,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:42:35,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:42:35,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:42:35,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:42:35,965 INFO L87 Difference]: Start difference. First operand 258 states and 284 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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 23:42:36,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:42:36,591 INFO L93 Difference]: Finished difference Result 436 states and 486 transitions. [2021-11-12 23:42:36,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:42:36,592 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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 23:42:36,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:42:36,595 INFO L225 Difference]: With dead ends: 436 [2021-11-12 23:42:36,595 INFO L226 Difference]: Without dead ends: 436 [2021-11-12 23:42:36,596 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:42:36,597 INFO L933 BasicCegarLoop]: 401 mSDtfsCounter, 197 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 495.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 565 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.50ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 599.42ms IncrementalHoareTripleChecker+Time [2021-11-12 23:42:36,598 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [199 Valid, 565 Invalid, 205 Unknown, 0 Unchecked, 6.50ms Time], IncrementalHoareTripleChecker [5 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 599.42ms Time] [2021-11-12 23:42:36,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2021-11-12 23:42:36,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 256. [2021-11-12 23:42:36,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 137 states have (on average 1.9343065693430657) internal successors, (265), 253 states have internal predecessors, (265), 15 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-12 23:42:36,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 282 transitions. [2021-11-12 23:42:36,619 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 282 transitions. Word has length 5 [2021-11-12 23:42:36,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:42:36,620 INFO L470 AbstractCegarLoop]: Abstraction has 256 states and 282 transitions. [2021-11-12 23:42:36,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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 23:42:36,620 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 282 transitions. [2021-11-12 23:42:36,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-12 23:42:36,621 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:42:36,621 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-12 23:42:36,643 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-12 23:42:36,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:42:36,832 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION (and 101 more)] === [2021-11-12 23:42:36,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:42:36,833 INFO L85 PathProgramCache]: Analyzing trace with hash 56374665, now seen corresponding path program 1 times [2021-11-12 23:42:36,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:42:36,834 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1604434118] [2021-11-12 23:42:36,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:42:36,834 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:42:36,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:42:36,835 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:42:36,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-12 23:42:36,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:42:36,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:42:36,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:42:36,916 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 23:42:36,940 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 23:42:36,940 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:42:37,005 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 23:42:37,005 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:42:37,005 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1604434118] [2021-11-12 23:42:37,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1604434118] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:42:37,008 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:42:37,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-12 23:42:37,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866125347] [2021-11-12 23:42:37,014 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:42:37,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:42:37,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:42:37,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:42:37,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:42:37,017 INFO L87 Difference]: Start difference. First operand 256 states and 282 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) 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 23:42:38,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:42:38,226 INFO L93 Difference]: Finished difference Result 401 states and 445 transitions. [2021-11-12 23:42:38,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:42:38,227 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) 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 5 [2021-11-12 23:42:38,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:42:38,230 INFO L225 Difference]: With dead ends: 401 [2021-11-12 23:42:38,230 INFO L226 Difference]: Without dead ends: 401 [2021-11-12 23:42:38,230 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:42:38,231 INFO L933 BasicCegarLoop]: 385 mSDtfsCounter, 163 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 995.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 730 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.92ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1174.26ms IncrementalHoareTripleChecker+Time [2021-11-12 23:42:38,232 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [163 Valid, 730 Invalid, 275 Unknown, 0 Unchecked, 8.92ms Time], IncrementalHoareTripleChecker [3 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 1174.26ms Time] [2021-11-12 23:42:38,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2021-11-12 23:42:38,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 254. [2021-11-12 23:42:38,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 137 states have (on average 1.9197080291970803) internal successors, (263), 251 states have internal predecessors, (263), 15 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-12 23:42:38,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 280 transitions. [2021-11-12 23:42:38,247 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 280 transitions. Word has length 5 [2021-11-12 23:42:38,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:42:38,248 INFO L470 AbstractCegarLoop]: Abstraction has 254 states and 280 transitions. [2021-11-12 23:42:38,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) 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 23:42:38,248 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 280 transitions. [2021-11-12 23:42:38,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-12 23:42:38,249 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:42:38,249 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:42:38,269 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-11-12 23:42:38,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:42:38,469 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION (and 101 more)] === [2021-11-12 23:42:38,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:42:38,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1659458169, now seen corresponding path program 1 times [2021-11-12 23:42:38,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:42:38,470 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [394468870] [2021-11-12 23:42:38,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:42:38,470 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:42:38,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:42:38,472 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:42:38,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-12 23:42:38,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:42:38,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:42:38,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:42:38,602 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 23:42:38,602 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:42:38,656 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 23:42:38,657 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:42:38,657 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [394468870] [2021-11-12 23:42:38,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [394468870] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:42:38,657 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:42:38,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-12 23:42:38,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421204334] [2021-11-12 23:42:38,658 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:42:38,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:42:38,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:42:38,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:42:38,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:42:38,661 INFO L87 Difference]: Start difference. First operand 254 states and 280 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:42:38,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:42:38,722 INFO L93 Difference]: Finished difference Result 268 states and 292 transitions. [2021-11-12 23:42:38,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:42:38,723 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-12 23:42:38,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:42:38,726 INFO L225 Difference]: With dead ends: 268 [2021-11-12 23:42:38,726 INFO L226 Difference]: Without dead ends: 267 [2021-11-12 23:42:38,727 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 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 23:42:38,729 INFO L933 BasicCegarLoop]: 276 mSDtfsCounter, 13 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 533 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.08ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 49.60ms IncrementalHoareTripleChecker+Time [2021-11-12 23:42:38,730 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 533 Invalid, 20 Unknown, 0 Unchecked, 2.08ms Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 49.60ms Time] [2021-11-12 23:42:38,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2021-11-12 23:42:38,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 253. [2021-11-12 23:42:38,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 136 states have (on average 1.9191176470588236) internal successors, (261), 250 states have internal predecessors, (261), 15 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-12 23:42:38,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 278 transitions. [2021-11-12 23:42:38,742 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 278 transitions. Word has length 7 [2021-11-12 23:42:38,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:42:38,742 INFO L470 AbstractCegarLoop]: Abstraction has 253 states and 278 transitions. [2021-11-12 23:42:38,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:42:38,743 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 278 transitions. [2021-11-12 23:42:38,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-12 23:42:38,743 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:42:38,744 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:42:38,759 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-12 23:42:38,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:42:38,956 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION (and 101 more)] === [2021-11-12 23:42:38,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:42:38,956 INFO L85 PathProgramCache]: Analyzing trace with hash -406871347, now seen corresponding path program 1 times [2021-11-12 23:42:38,957 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:42:38,958 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [257588126] [2021-11-12 23:42:38,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:42:38,958 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:42:38,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:42:38,960 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:42:38,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-12 23:42:39,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:42:39,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:42:39,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:42:39,065 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 23:42:39,077 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 23:42:39,078 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:42:39,110 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 23:42:39,110 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:42:39,111 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [257588126] [2021-11-12 23:42:39,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [257588126] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:42:39,113 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:42:39,113 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-12 23:42:39,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890394234] [2021-11-12 23:42:39,114 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:42:39,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:42:39,114 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:42:39,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:42:39,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:42:39,116 INFO L87 Difference]: Start difference. First operand 253 states and 278 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 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 23:42:39,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:42:39,581 INFO L93 Difference]: Finished difference Result 375 states and 414 transitions. [2021-11-12 23:42:39,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:42:39,581 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 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 23:42:39,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:42:39,584 INFO L225 Difference]: With dead ends: 375 [2021-11-12 23:42:39,584 INFO L226 Difference]: Without dead ends: 375 [2021-11-12 23:42:39,584 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 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 23:42:39,585 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 193 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 378.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.69ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 446.88ms IncrementalHoareTripleChecker+Time [2021-11-12 23:42:39,585 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [195 Valid, 306 Invalid, 185 Unknown, 0 Unchecked, 3.69ms Time], IncrementalHoareTripleChecker [5 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 446.88ms Time] [2021-11-12 23:42:39,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2021-11-12 23:42:39,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 251. [2021-11-12 23:42:39,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 136 states have (on average 1.9044117647058822) internal successors, (259), 248 states have internal predecessors, (259), 15 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-12 23:42:39,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 276 transitions. [2021-11-12 23:42:39,597 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 276 transitions. Word has length 9 [2021-11-12 23:42:39,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:42:39,597 INFO L470 AbstractCegarLoop]: Abstraction has 251 states and 276 transitions. [2021-11-12 23:42:39,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 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 23:42:39,598 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 276 transitions. [2021-11-12 23:42:39,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-12 23:42:39,598 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:42:39,599 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:42:39,615 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-11-12 23:42:39,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:42:39,816 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION (and 101 more)] === [2021-11-12 23:42:39,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:42:39,816 INFO L85 PathProgramCache]: Analyzing trace with hash -406871346, now seen corresponding path program 1 times [2021-11-12 23:42:39,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:42:39,816 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [582258416] [2021-11-12 23:42:39,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:42:39,817 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:42:39,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:42:39,818 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:42:39,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-12 23:42:39,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:42:39,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:42:39,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:42:39,913 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 23:42:39,932 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 23:42:39,933 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:42:39,999 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 23:42:39,999 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:42:39,999 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [582258416] [2021-11-12 23:42:40,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [582258416] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:42:40,000 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:42:40,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-12 23:42:40,000 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753701054] [2021-11-12 23:42:40,000 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:42:40,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:42:40,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:42:40,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:42:40,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:42:40,001 INFO L87 Difference]: Start difference. First operand 251 states and 276 transitions. Second operand has 4 states, 3 states have (on average 4.0) 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 23:42:40,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:42:40,978 INFO L93 Difference]: Finished difference Result 340 states and 373 transitions. [2021-11-12 23:42:40,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:42:40,979 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) 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 9 [2021-11-12 23:42:40,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:42:40,982 INFO L225 Difference]: With dead ends: 340 [2021-11-12 23:42:40,982 INFO L226 Difference]: Without dead ends: 340 [2021-11-12 23:42:40,982 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 14 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 23:42:40,983 INFO L933 BasicCegarLoop]: 220 mSDtfsCounter, 159 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 842.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.59ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 950.93ms IncrementalHoareTripleChecker+Time [2021-11-12 23:42:40,983 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [159 Valid, 454 Invalid, 235 Unknown, 0 Unchecked, 4.59ms Time], IncrementalHoareTripleChecker [3 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 950.93ms Time] [2021-11-12 23:42:40,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2021-11-12 23:42:40,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 249. [2021-11-12 23:42:40,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 136 states have (on average 1.8897058823529411) internal successors, (257), 246 states have internal predecessors, (257), 15 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-12 23:42:40,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 274 transitions. [2021-11-12 23:42:40,993 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 274 transitions. Word has length 9 [2021-11-12 23:42:40,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:42:40,994 INFO L470 AbstractCegarLoop]: Abstraction has 249 states and 274 transitions. [2021-11-12 23:42:40,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) 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 23:42:40,994 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 274 transitions. [2021-11-12 23:42:40,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-12 23:42:40,995 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:42:40,995 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:42:41,017 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-11-12 23:42:41,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:42:41,208 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr89ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION (and 101 more)] === [2021-11-12 23:42:41,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:42:41,211 INFO L85 PathProgramCache]: Analyzing trace with hash -395796626, now seen corresponding path program 1 times [2021-11-12 23:42:41,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:42:41,211 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1739747325] [2021-11-12 23:42:41,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:42:41,212 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:42:41,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:42:41,213 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:42:41,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-12 23:42:41,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:42:41,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:42:41,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:42:41,337 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:42:41,338 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:42:41,372 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:42:41,373 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:42:41,373 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1739747325] [2021-11-12 23:42:41,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1739747325] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:42:41,373 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:42:41,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-12 23:42:41,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105680642] [2021-11-12 23:42:41,373 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:42:41,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:42:41,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:42:41,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:42:41,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:42:41,374 INFO L87 Difference]: Start difference. First operand 249 states and 274 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 23:42:41,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:42:41,498 INFO L93 Difference]: Finished difference Result 403 states and 443 transitions. [2021-11-12 23:42:41,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:42:41,499 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 23:42:41,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:42:41,502 INFO L225 Difference]: With dead ends: 403 [2021-11-12 23:42:41,502 INFO L226 Difference]: Without dead ends: 403 [2021-11-12 23:42:41,503 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:42:41,504 INFO L933 BasicCegarLoop]: 262 mSDtfsCounter, 599 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 86.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 601 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.46ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 100.98ms IncrementalHoareTripleChecker+Time [2021-11-12 23:42:41,504 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [601 Valid, 500 Invalid, 43 Unknown, 0 Unchecked, 3.46ms Time], IncrementalHoareTripleChecker [5 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 100.98ms Time] [2021-11-12 23:42:41,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2021-11-12 23:42:41,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 249. [2021-11-12 23:42:41,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 136 states have (on average 1.8823529411764706) internal successors, (256), 246 states have internal predecessors, (256), 15 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-12 23:42:41,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 273 transitions. [2021-11-12 23:42:41,515 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 273 transitions. Word has length 14 [2021-11-12 23:42:41,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:42:41,515 INFO L470 AbstractCegarLoop]: Abstraction has 249 states and 273 transitions. [2021-11-12 23:42:41,515 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 23:42:41,516 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 273 transitions. [2021-11-12 23:42:41,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-12 23:42:41,516 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:42:41,516 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:42:41,532 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-12 23:42:41,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:42:41,729 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION (and 101 more)] === [2021-11-12 23:42:41,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:42:41,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1891163323, now seen corresponding path program 1 times [2021-11-12 23:42:41,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:42:41,730 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [475541799] [2021-11-12 23:42:41,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:42:41,730 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:42:41,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:42:41,731 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:42:41,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-12 23:42:41,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:42:41,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 23:42:41,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:42:41,870 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:42:41,871 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:42:41,911 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:42:41,911 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:42:41,912 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [475541799] [2021-11-12 23:42:41,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [475541799] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:42:41,912 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:42:41,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-12 23:42:41,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746206796] [2021-11-12 23:42:41,913 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:42:41,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:42:41,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:42:41,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:42:41,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:42:41,914 INFO L87 Difference]: Start difference. First operand 249 states and 273 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:42:42,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:42:42,329 INFO L93 Difference]: Finished difference Result 750 states and 827 transitions. [2021-11-12 23:42:42,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:42:42,330 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-12 23:42:42,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:42:42,336 INFO L225 Difference]: With dead ends: 750 [2021-11-12 23:42:42,336 INFO L226 Difference]: Without dead ends: 750 [2021-11-12 23:42:42,337 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-12 23:42:42,340 INFO L933 BasicCegarLoop]: 237 mSDtfsCounter, 1535 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 299.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1537 SdHoareTripleChecker+Valid, 704 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.28ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 357.49ms IncrementalHoareTripleChecker+Time [2021-11-12 23:42:42,340 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1537 Valid, 704 Invalid, 132 Unknown, 0 Unchecked, 8.28ms Time], IncrementalHoareTripleChecker [18 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 357.49ms Time] [2021-11-12 23:42:42,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 750 states. [2021-11-12 23:42:42,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 750 to 252. [2021-11-12 23:42:42,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 140 states have (on average 1.8714285714285714) internal successors, (262), 249 states have internal predecessors, (262), 14 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-12 23:42:42,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 278 transitions. [2021-11-12 23:42:42,359 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 278 transitions. Word has length 16 [2021-11-12 23:42:42,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:42:42,362 INFO L470 AbstractCegarLoop]: Abstraction has 252 states and 278 transitions. [2021-11-12 23:42:42,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:42:42,363 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 278 transitions. [2021-11-12 23:42:42,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-12 23:42:42,363 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:42:42,363 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:42:42,379 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-12 23:42:42,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:42:42,580 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION (and 101 more)] === [2021-11-12 23:42:42,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:42:42,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1891152073, now seen corresponding path program 1 times [2021-11-12 23:42:42,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:42:42,581 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [574042350] [2021-11-12 23:42:42,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:42:42,581 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:42:42,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:42:42,582 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:42:42,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-12 23:42:42,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:42:42,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-12 23:42:42,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:42:42,677 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 23:42:42,796 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:42:42,796 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:42:43,098 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:42:43,098 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:42:43,099 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [574042350] [2021-11-12 23:42:43,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [574042350] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:42:43,099 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:42:43,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-12 23:42:43,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397383163] [2021-11-12 23:42:43,099 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:42:43,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 23:42:43,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:42:43,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 23:42:43,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-12 23:42:43,101 INFO L87 Difference]: Start difference. First operand 252 states and 278 transitions. Second operand has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 8 states have internal predecessors, (26), 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 23:42:46,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:42:46,046 INFO L93 Difference]: Finished difference Result 645 states and 709 transitions. [2021-11-12 23:42:46,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-12 23:42:46,047 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 8 states have internal predecessors, (26), 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 23:42:46,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:42:46,051 INFO L225 Difference]: With dead ends: 645 [2021-11-12 23:42:46,052 INFO L226 Difference]: Without dead ends: 645 [2021-11-12 23:42:46,052 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2021-11-12 23:42:46,053 INFO L933 BasicCegarLoop]: 196 mSDtfsCounter, 2072 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 540 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2299.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2072 SdHoareTripleChecker+Valid, 688 SdHoareTripleChecker+Invalid, 564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.42ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2638.44ms IncrementalHoareTripleChecker+Time [2021-11-12 23:42:46,053 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2072 Valid, 688 Invalid, 564 Unknown, 0 Unchecked, 10.42ms Time], IncrementalHoareTripleChecker [24 Valid, 540 Invalid, 0 Unknown, 0 Unchecked, 2638.44ms Time] [2021-11-12 23:42:46,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2021-11-12 23:42:46,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 290. [2021-11-12 23:42:46,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 181 states have (on average 1.8176795580110496) internal successors, (329), 287 states have internal predecessors, (329), 14 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-12 23:42:46,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 345 transitions. [2021-11-12 23:42:46,066 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 345 transitions. Word has length 16 [2021-11-12 23:42:46,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:42:46,067 INFO L470 AbstractCegarLoop]: Abstraction has 290 states and 345 transitions. [2021-11-12 23:42:46,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 8 states have internal predecessors, (26), 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 23:42:46,067 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 345 transitions. [2021-11-12 23:42:46,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-12 23:42:46,068 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:42:46,068 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:42:46,085 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-12 23:42:46,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:42:46,279 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION (and 101 more)] === [2021-11-12 23:42:46,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:42:46,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1891152072, now seen corresponding path program 1 times [2021-11-12 23:42:46,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:42:46,281 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1737291666] [2021-11-12 23:42:46,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:42:46,281 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:42:46,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:42:46,282 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:42:46,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-12 23:42:46,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:42:46,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 23:42:46,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:42:46,359 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 23:42:46,410 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:42:46,410 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:42:46,473 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:42:46,473 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:42:46,473 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1737291666] [2021-11-12 23:42:46,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1737291666] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:42:46,474 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:42:46,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-12 23:42:46,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077335105] [2021-11-12 23:42:46,474 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:42:46,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:42:46,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:42:46,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:42:46,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:42:46,476 INFO L87 Difference]: Start difference. First operand 290 states and 345 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 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 23:42:47,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:42:47,430 INFO L93 Difference]: Finished difference Result 473 states and 543 transitions. [2021-11-12 23:42:47,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-12 23:42:47,431 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 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 23:42:47,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:42:47,434 INFO L225 Difference]: With dead ends: 473 [2021-11-12 23:42:47,435 INFO L226 Difference]: Without dead ends: 473 [2021-11-12 23:42:47,435 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-12 23:42:47,436 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 627 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 758.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 629 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.17ms SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 906.90ms IncrementalHoareTripleChecker+Time [2021-11-12 23:42:47,436 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [629 Valid, 537 Invalid, 496 Unknown, 0 Unchecked, 3.17ms Time], IncrementalHoareTripleChecker [36 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 906.90ms Time] [2021-11-12 23:42:47,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2021-11-12 23:42:47,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 281. [2021-11-12 23:42:47,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 181 states have (on average 1.718232044198895) internal successors, (311), 278 states have internal predecessors, (311), 14 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-12 23:42:47,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 327 transitions. [2021-11-12 23:42:47,447 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 327 transitions. Word has length 16 [2021-11-12 23:42:47,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:42:47,447 INFO L470 AbstractCegarLoop]: Abstraction has 281 states and 327 transitions. [2021-11-12 23:42:47,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 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 23:42:47,448 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 327 transitions. [2021-11-12 23:42:47,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-12 23:42:47,449 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:42:47,449 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:42:47,458 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-12 23:42:47,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:42:47,656 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION (and 101 more)] === [2021-11-12 23:42:47,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:42:47,656 INFO L85 PathProgramCache]: Analyzing trace with hash 683905399, now seen corresponding path program 1 times [2021-11-12 23:42:47,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:42:47,657 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1019815158] [2021-11-12 23:42:47,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:42:47,657 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:42:47,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:42:47,658 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:42:47,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-12 23:42:47,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:42:47,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-12 23:42:47,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:42:47,863 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-12 23:42:47,870 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-12 23:42:48,046 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-11-12 23:42:48,055 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2021-11-12 23:42:48,083 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:42:48,083 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:42:48,326 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:42:48,326 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:42:48,327 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1019815158] [2021-11-12 23:42:48,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1019815158] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:42:48,327 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1331350895] [2021-11-12 23:42:48,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:42:48,327 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:42:48,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:42:48,331 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:42:48,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2021-11-12 23:42:48,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:42:48,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-12 23:42:48,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:42:48,611 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 25 [2021-11-12 23:42:48,616 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2021-11-12 23:42:48,631 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-12 23:42:48,631 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:42:48,766 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-12 23:42:48,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1331350895] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:42:48,766 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-12 23:42:48,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [8, 7] total 13 [2021-11-12 23:42:48,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383043804] [2021-11-12 23:42:48,767 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:42:48,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:42:48,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:42:48,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:42:48,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-11-12 23:42:48,768 INFO L87 Difference]: Start difference. First operand 281 states and 327 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:42:49,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:42:49,209 INFO L93 Difference]: Finished difference Result 363 states and 415 transitions. [2021-11-12 23:42:49,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:42:49,210 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-11-12 23:42:49,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:42:49,211 INFO L225 Difference]: With dead ends: 363 [2021-11-12 23:42:49,211 INFO L226 Difference]: Without dead ends: 363 [2021-11-12 23:42:49,212 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:42:49,212 INFO L933 BasicCegarLoop]: 231 mSDtfsCounter, 206 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 332.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 722 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.36ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 393.62ms IncrementalHoareTripleChecker+Time [2021-11-12 23:42:49,213 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [206 Valid, 722 Invalid, 133 Unknown, 0 Unchecked, 2.36ms Time], IncrementalHoareTripleChecker [3 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 393.62ms Time] [2021-11-12 23:42:49,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2021-11-12 23:42:49,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 280. [2021-11-12 23:42:49,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 181 states have (on average 1.707182320441989) internal successors, (309), 277 states have internal predecessors, (309), 13 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-12 23:42:49,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 324 transitions. [2021-11-12 23:42:49,220 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 324 transitions. Word has length 23 [2021-11-12 23:42:49,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:42:49,221 INFO L470 AbstractCegarLoop]: Abstraction has 280 states and 324 transitions. [2021-11-12 23:42:49,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:42:49,221 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 324 transitions. [2021-11-12 23:42:49,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-12 23:42:49,222 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:42:49,222 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:42:49,228 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (14)] Ended with exit code 0 [2021-11-12 23:42:49,431 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-11-12 23:42:49,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:42:49,624 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION (and 101 more)] === [2021-11-12 23:42:49,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:42:49,625 INFO L85 PathProgramCache]: Analyzing trace with hash 3488321, now seen corresponding path program 1 times [2021-11-12 23:42:49,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:42:49,625 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1219727734] [2021-11-12 23:42:49,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:42:49,626 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:42:49,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:42:49,626 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:42:49,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-12 23:42:49,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:42:49,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-12 23:42:49,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:42:49,804 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-12 23:42:49,814 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-12 23:42:49,953 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-11-12 23:42:49,959 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2021-11-12 23:42:49,990 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:42:49,990 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:42:50,204 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:42:50,204 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:42:50,204 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1219727734] [2021-11-12 23:42:50,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1219727734] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:42:50,205 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1940479553] [2021-11-12 23:42:50,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:42:50,205 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:42:50,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:42:50,206 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:42:50,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2021-11-12 23:42:50,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:42:50,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-12 23:42:50,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:42:50,511 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 28 [2021-11-12 23:42:50,514 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-12 23:42:50,549 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-12 23:42:50,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:42:50,677 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-12 23:42:50,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1940479553] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:42:50,678 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-12 23:42:50,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [8, 7] total 15 [2021-11-12 23:42:50,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712779781] [2021-11-12 23:42:50,678 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:42:50,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:42:50,679 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:42:50,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:42:50,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2021-11-12 23:42:50,679 INFO L87 Difference]: Start difference. First operand 280 states and 324 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:42:51,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:42:51,194 INFO L93 Difference]: Finished difference Result 279 states and 321 transitions. [2021-11-12 23:42:51,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:42:51,196 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-11-12 23:42:51,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:42:51,198 INFO L225 Difference]: With dead ends: 279 [2021-11-12 23:42:51,198 INFO L226 Difference]: Without dead ends: 279 [2021-11-12 23:42:51,199 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2021-11-12 23:42:51,200 INFO L933 BasicCegarLoop]: 242 mSDtfsCounter, 19 mSDsluCounter, 611 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 394.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 853 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.25ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 459.71ms IncrementalHoareTripleChecker+Time [2021-11-12 23:42:51,200 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 853 Invalid, 142 Unknown, 0 Unchecked, 2.25ms Time], IncrementalHoareTripleChecker [2 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 459.71ms Time] [2021-11-12 23:42:51,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2021-11-12 23:42:51,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 279. [2021-11-12 23:42:51,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 181 states have (on average 1.6961325966850829) internal successors, (307), 276 states have internal predecessors, (307), 12 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-12 23:42:51,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 321 transitions. [2021-11-12 23:42:51,214 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 321 transitions. Word has length 23 [2021-11-12 23:42:51,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:42:51,215 INFO L470 AbstractCegarLoop]: Abstraction has 279 states and 321 transitions. [2021-11-12 23:42:51,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:42:51,215 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 321 transitions. [2021-11-12 23:42:51,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-12 23:42:51,219 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:42:51,220 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:42:51,234 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-12 23:42:51,439 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (16)] Forceful destruction successful, exit code 0 [2021-11-12 23:42:51,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-12 23:42:51,633 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION (and 101 more)] === [2021-11-12 23:42:51,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:42:51,633 INFO L85 PathProgramCache]: Analyzing trace with hash -1322187483, now seen corresponding path program 1 times [2021-11-12 23:42:51,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:42:51,634 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1331033858] [2021-11-12 23:42:51,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:42:51,634 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:42:51,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:42:51,636 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:42:51,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-12 23:42:51,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:42:51,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-12 23:42:51,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:42:51,781 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-12 23:42:51,809 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-12 23:42:51,809 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 21 [2021-11-12 23:42:51,884 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2021-11-12 23:42:51,899 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:42:51,900 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:42:51,993 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:42:51,993 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:42:51,993 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1331033858] [2021-11-12 23:42:51,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1331033858] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:42:51,993 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:42:51,994 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2021-11-12 23:42:51,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197313530] [2021-11-12 23:42:51,994 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:42:51,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-12 23:42:51,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:42:51,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-12 23:42:51,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:42:51,995 INFO L87 Difference]: Start difference. First operand 279 states and 321 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:42:53,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:42:53,019 INFO L93 Difference]: Finished difference Result 597 states and 654 transitions. [2021-11-12 23:42:53,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-12 23:42:53,020 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-11-12 23:42:53,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:42:53,023 INFO L225 Difference]: With dead ends: 597 [2021-11-12 23:42:53,024 INFO L226 Difference]: Without dead ends: 597 [2021-11-12 23:42:53,024 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-11-12 23:42:53,025 INFO L933 BasicCegarLoop]: 214 mSDtfsCounter, 1268 mSDsluCounter, 803 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 785.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1270 SdHoareTripleChecker+Valid, 1017 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.84ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 901.78ms IncrementalHoareTripleChecker+Time [2021-11-12 23:42:53,025 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1270 Valid, 1017 Invalid, 297 Unknown, 0 Unchecked, 4.84ms Time], IncrementalHoareTripleChecker [11 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 901.78ms Time] [2021-11-12 23:42:53,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2021-11-12 23:42:53,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 279. [2021-11-12 23:42:53,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 181 states have (on average 1.6906077348066297) internal successors, (306), 276 states have internal predecessors, (306), 12 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-12 23:42:53,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 320 transitions. [2021-11-12 23:42:53,036 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 320 transitions. Word has length 26 [2021-11-12 23:42:53,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:42:53,037 INFO L470 AbstractCegarLoop]: Abstraction has 279 states and 320 transitions. [2021-11-12 23:42:53,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:42:53,037 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 320 transitions. [2021-11-12 23:42:53,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-12 23:42:53,038 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:42:53,038 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:42:53,061 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2021-11-12 23:42:53,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:42:53,250 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION (and 101 more)] === [2021-11-12 23:42:53,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:42:53,250 INFO L85 PathProgramCache]: Analyzing trace with hash 546462200, now seen corresponding path program 1 times [2021-11-12 23:42:53,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:42:53,251 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2125415532] [2021-11-12 23:42:53,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:42:53,251 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:42:53,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:42:53,252 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:42:53,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-12 23:42:53,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:42:53,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-12 23:42:53,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:42:53,435 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-12 23:42:53,441 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-12 23:42:53,572 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-11-12 23:42:53,575 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2021-11-12 23:42:53,609 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:42:53,610 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:42:53,832 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:42:53,832 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:42:53,833 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2125415532] [2021-11-12 23:42:53,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2125415532] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:42:53,833 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [509601321] [2021-11-12 23:42:53,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:42:53,833 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:42:53,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:42:53,834 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:42:53,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2021-11-12 23:42:53,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:42:53,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-12 23:42:53,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:42:54,059 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-12 23:42:54,065 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-12 23:42:54,176 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-11-12 23:42:54,179 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2021-11-12 23:42:54,214 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:42:54,214 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:42:54,365 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:42:54,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [509601321] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:42:54,365 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1220154426] [2021-11-12 23:42:54,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:42:54,365 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:42:54,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:42:54,372 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:42:54,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-12 23:42:54,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:42:54,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-12 23:42:54,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:42:54,494 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-12 23:42:54,533 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-12 23:42:54,533 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 21 [2021-11-12 23:42:54,633 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2021-11-12 23:42:54,676 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:42:54,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:42:54,775 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:42:54,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1220154426] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:42:54,775 INFO L186 FreeRefinementEngine]: Found 2 perfect and 4 imperfect interpolant sequences. [2021-11-12 23:42:54,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [8, 7, 8, 7] total 17 [2021-11-12 23:42:54,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589762404] [2021-11-12 23:42:54,776 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:42:54,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-12 23:42:54,776 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:42:54,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-12 23:42:54,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2021-11-12 23:42:54,777 INFO L87 Difference]: Start difference. First operand 279 states and 320 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:42:55,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:42:55,713 INFO L93 Difference]: Finished difference Result 596 states and 652 transitions. [2021-11-12 23:42:55,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-12 23:42:55,716 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-11-12 23:42:55,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:42:55,719 INFO L225 Difference]: With dead ends: 596 [2021-11-12 23:42:55,719 INFO L226 Difference]: Without dead ends: 596 [2021-11-12 23:42:55,720 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 134 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=71, Invalid=391, Unknown=0, NotChecked=0, Total=462 [2021-11-12 23:42:55,720 INFO L933 BasicCegarLoop]: 214 mSDtfsCounter, 1264 mSDsluCounter, 803 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 652.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1266 SdHoareTripleChecker+Valid, 1017 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.82ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 779.78ms IncrementalHoareTripleChecker+Time [2021-11-12 23:42:55,721 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1266 Valid, 1017 Invalid, 297 Unknown, 0 Unchecked, 3.82ms Time], IncrementalHoareTripleChecker [11 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 779.78ms Time] [2021-11-12 23:42:55,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2021-11-12 23:42:55,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 279. [2021-11-12 23:42:55,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 181 states have (on average 1.6850828729281768) internal successors, (305), 276 states have internal predecessors, (305), 12 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-12 23:42:55,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 319 transitions. [2021-11-12 23:42:55,731 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 319 transitions. Word has length 26 [2021-11-12 23:42:55,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:42:55,732 INFO L470 AbstractCegarLoop]: Abstraction has 279 states and 319 transitions. [2021-11-12 23:42:55,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:42:55,732 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 319 transitions. [2021-11-12 23:42:55,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-12 23:42:55,733 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:42:55,733 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:42:55,748 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2021-11-12 23:42:55,964 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2021-11-12 23:42:56,146 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2021-11-12 23:42:56,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-12 23:42:56,345 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr26REQUIRES_VIOLATION === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION (and 101 more)] === [2021-11-12 23:42:56,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:42:56,345 INFO L85 PathProgramCache]: Analyzing trace with hash 1961645783, now seen corresponding path program 1 times [2021-11-12 23:42:56,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:42:56,345 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1330002016] [2021-11-12 23:42:56,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:42:56,346 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:42:56,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:42:56,347 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:42:56,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-12 23:42:56,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:42:56,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-12 23:42:56,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:42:56,488 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 23:42:56,519 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-12 23:42:56,520 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 29 [2021-11-12 23:42:56,577 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 29 [2021-11-12 23:42:56,633 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-12 23:42:56,634 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 38 [2021-11-12 23:42:57,022 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 34 [2021-11-12 23:42:57,065 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:42:57,066 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:42:59,409 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:42:59,410 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:42:59,410 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1330002016] [2021-11-12 23:42:59,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1330002016] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:42:59,410 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:42:59,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-11-12 23:42:59,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731911538] [2021-11-12 23:42:59,411 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:42:59,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-12 23:42:59,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:42:59,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-12 23:42:59,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=125, Unknown=1, NotChecked=0, Total=156 [2021-11-12 23:42:59,412 INFO L87 Difference]: Start difference. First operand 279 states and 319 transitions. Second operand has 13 states, 12 states have (on average 4.333333333333333) internal successors, (52), 13 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 23:43:00,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:43:00,046 INFO L93 Difference]: Finished difference Result 280 states and 321 transitions. [2021-11-12 23:43:00,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-12 23:43:00,047 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 4.333333333333333) internal successors, (52), 13 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) Word has length 27 [2021-11-12 23:43:00,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:43:00,049 INFO L225 Difference]: With dead ends: 280 [2021-11-12 23:43:00,049 INFO L226 Difference]: Without dead ends: 280 [2021-11-12 23:43:00,049 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=30, Invalid=125, Unknown=1, NotChecked=0, Total=156 [2021-11-12 23:43:00,050 INFO L933 BasicCegarLoop]: 236 mSDtfsCounter, 2 mSDsluCounter, 1027 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 514.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1263 SdHoareTripleChecker+Invalid, 490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.32ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 289 IncrementalHoareTripleChecker+Unchecked, 606.01ms IncrementalHoareTripleChecker+Time [2021-11-12 23:43:00,050 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1263 Invalid, 490 Unknown, 0 Unchecked, 4.32ms Time], IncrementalHoareTripleChecker [0 Valid, 201 Invalid, 0 Unknown, 289 Unchecked, 606.01ms Time] [2021-11-12 23:43:00,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2021-11-12 23:43:00,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 280. [2021-11-12 23:43:00,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 182 states have (on average 1.6868131868131868) internal successors, (307), 277 states have internal predecessors, (307), 12 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-12 23:43:00,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 321 transitions. [2021-11-12 23:43:00,059 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 321 transitions. Word has length 27 [2021-11-12 23:43:00,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:43:00,060 INFO L470 AbstractCegarLoop]: Abstraction has 280 states and 321 transitions. [2021-11-12 23:43:00,060 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 4.333333333333333) internal successors, (52), 13 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 23:43:00,060 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 321 transitions. [2021-11-12 23:43:00,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-12 23:43:00,064 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:43:00,064 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:43:00,082 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-12 23:43:00,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:43:00,283 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr27REQUIRES_VIOLATION === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION (and 101 more)] === [2021-11-12 23:43:00,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:43:00,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1961645784, now seen corresponding path program 1 times [2021-11-12 23:43:00,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:43:00,283 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1969973267] [2021-11-12 23:43:00,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:43:00,284 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:43:00,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:43:00,285 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:43:00,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-12 23:43:00,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:43:00,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-12 23:43:00,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:43:00,388 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 23:43:00,392 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 23:43:00,472 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-12 23:43:00,472 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 19 [2021-11-12 23:43:00,488 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-11-12 23:43:00,554 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-12 23:43:00,566 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-11-12 23:43:00,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:00,619 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-12 23:43:00,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:00,630 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 26 [2021-11-12 23:43:01,046 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 32 [2021-11-12 23:43:01,049 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-11-12 23:43:01,085 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:43:01,085 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:43:06,173 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:43:06,174 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:43:06,174 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1969973267] [2021-11-12 23:43:06,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1969973267] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:43:06,174 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:43:06,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-11-12 23:43:06,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410364133] [2021-11-12 23:43:06,175 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:43:06,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:43:06,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:43:06,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:43:06,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=148, Unknown=1, NotChecked=0, Total=182 [2021-11-12 23:43:06,177 INFO L87 Difference]: Start difference. First operand 280 states and 321 transitions. Second operand has 14 states, 13 states have (on average 4.0) internal successors, (52), 14 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 23:43:14,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:43:14,309 INFO L93 Difference]: Finished difference Result 806 states and 885 transitions. [2021-11-12 23:43:14,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-12 23:43:14,310 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 4.0) internal successors, (52), 14 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) Word has length 27 [2021-11-12 23:43:14,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:43:14,314 INFO L225 Difference]: With dead ends: 806 [2021-11-12 23:43:14,314 INFO L226 Difference]: Without dead ends: 806 [2021-11-12 23:43:14,315 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=235, Invalid=634, Unknown=1, NotChecked=0, Total=870 [2021-11-12 23:43:14,316 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 2008 mSDsluCounter, 792 mSDsCounter, 0 mSdLazyCounter, 1078 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5350.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2010 SdHoareTripleChecker+Valid, 932 SdHoareTripleChecker+Invalid, 1257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.73ms SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1078 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 134 IncrementalHoareTripleChecker+Unchecked, 5989.10ms IncrementalHoareTripleChecker+Time [2021-11-12 23:43:14,316 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2010 Valid, 932 Invalid, 1257 Unknown, 0 Unchecked, 10.73ms Time], IncrementalHoareTripleChecker [45 Valid, 1078 Invalid, 0 Unknown, 134 Unchecked, 5989.10ms Time] [2021-11-12 23:43:14,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2021-11-12 23:43:14,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 280. [2021-11-12 23:43:14,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 182 states have (on average 1.6813186813186813) internal successors, (306), 277 states have internal predecessors, (306), 12 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-12 23:43:14,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 320 transitions. [2021-11-12 23:43:14,327 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 320 transitions. Word has length 27 [2021-11-12 23:43:14,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:43:14,327 INFO L470 AbstractCegarLoop]: Abstraction has 280 states and 320 transitions. [2021-11-12 23:43:14,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 4.0) internal successors, (52), 14 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 23:43:14,328 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 320 transitions. [2021-11-12 23:43:14,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-12 23:43:14,328 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:43:14,329 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:43:14,347 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (22)] Ended with exit code 0 [2021-11-12 23:43:14,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:43:14,540 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATION === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION (and 101 more)] === [2021-11-12 23:43:14,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:43:14,540 INFO L85 PathProgramCache]: Analyzing trace with hash -239830919, now seen corresponding path program 1 times [2021-11-12 23:43:14,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:43:14,541 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [485718452] [2021-11-12 23:43:14,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:43:14,541 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:43:14,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:43:14,542 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:43:14,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-12 23:43:14,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:43:14,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-12 23:43:14,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:43:14,699 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-12 23:43:14,711 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-12 23:43:14,847 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-11-12 23:43:14,851 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2021-11-12 23:43:14,906 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:43:14,906 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:43:15,185 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:43:15,185 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:43:15,185 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [485718452] [2021-11-12 23:43:15,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [485718452] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:43:15,185 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [632885009] [2021-11-12 23:43:15,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:43:15,186 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:43:15,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:43:15,186 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:43:15,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2021-11-12 23:43:15,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:43:15,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-12 23:43:15,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:43:15,370 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-12 23:43:15,375 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-12 23:43:15,517 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-11-12 23:43:15,520 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2021-11-12 23:43:15,569 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:43:15,569 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:43:15,727 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:43:15,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [632885009] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:43:15,727 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1082983892] [2021-11-12 23:43:15,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:43:15,728 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:43:15,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:43:15,728 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:43:15,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-11-12 23:43:15,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:43:15,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-12 23:43:15,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:43:15,904 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-12 23:43:15,917 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-12 23:43:16,022 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-11-12 23:43:16,027 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2021-11-12 23:43:16,062 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:43:16,063 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:43:16,263 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:43:16,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1082983892] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:43:16,264 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-12 23:43:16,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8, 7, 8, 7] total 12 [2021-11-12 23:43:16,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125842629] [2021-11-12 23:43:16,264 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-12 23:43:16,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-12 23:43:16,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:43:16,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-12 23:43:16,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-11-12 23:43:16,266 INFO L87 Difference]: Start difference. First operand 280 states and 320 transitions. Second operand has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 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 23:43:17,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:43:17,992 INFO L93 Difference]: Finished difference Result 472 states and 530 transitions. [2021-11-12 23:43:17,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-12 23:43:17,994 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 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) Word has length 27 [2021-11-12 23:43:17,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:43:17,996 INFO L225 Difference]: With dead ends: 472 [2021-11-12 23:43:17,996 INFO L226 Difference]: Without dead ends: 472 [2021-11-12 23:43:17,997 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2021-11-12 23:43:17,998 INFO L933 BasicCegarLoop]: 223 mSDtfsCounter, 649 mSDsluCounter, 1632 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1282.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 649 SdHoareTripleChecker+Valid, 1855 SdHoareTripleChecker+Invalid, 456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.71ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1499.69ms IncrementalHoareTripleChecker+Time [2021-11-12 23:43:17,998 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [649 Valid, 1855 Invalid, 456 Unknown, 0 Unchecked, 6.71ms Time], IncrementalHoareTripleChecker [5 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 1499.69ms Time] [2021-11-12 23:43:17,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2021-11-12 23:43:18,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 294. [2021-11-12 23:43:18,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 196 states have (on average 1.6377551020408163) internal successors, (321), 291 states have internal predecessors, (321), 12 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-12 23:43:18,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 335 transitions. [2021-11-12 23:43:18,008 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 335 transitions. Word has length 27 [2021-11-12 23:43:18,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:43:18,009 INFO L470 AbstractCegarLoop]: Abstraction has 294 states and 335 transitions. [2021-11-12 23:43:18,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 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 23:43:18,009 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 335 transitions. [2021-11-12 23:43:18,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-12 23:43:18,010 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:43:18,010 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:43:18,012 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (24)] Ended with exit code 0 [2021-11-12 23:43:18,232 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2021-11-12 23:43:18,419 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-11-12 23:43:18,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:43:18,613 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION (and 101 more)] === [2021-11-12 23:43:18,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:43:18,613 INFO L85 PathProgramCache]: Analyzing trace with hash 2064719858, now seen corresponding path program 1 times [2021-11-12 23:43:18,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:43:18,613 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [400697007] [2021-11-12 23:43:18,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:43:18,614 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:43:18,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:43:18,614 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:43:18,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-11-12 23:43:18,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 23:43:18,705 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-12 23:43:18,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 23:43:18,824 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-11-12 23:43:18,825 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-12 23:43:18,826 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location failErr0ASSERT_VIOLATIONMEMORY_LEAK (104 of 105 remaining) [2021-11-12 23:43:18,827 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location merge_single_nodeErr0REQUIRES_VIOLATION (103 of 105 remaining) [2021-11-12 23:43:18,828 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location merge_single_nodeErr1REQUIRES_VIOLATION (102 of 105 remaining) [2021-11-12 23:43:18,828 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location merge_single_nodeErr2REQUIRES_VIOLATION (101 of 105 remaining) [2021-11-12 23:43:18,828 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location merge_single_nodeErr3REQUIRES_VIOLATION (100 of 105 remaining) [2021-11-12 23:43:18,828 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location merge_single_nodeErr4REQUIRES_VIOLATION (99 of 105 remaining) [2021-11-12 23:43:18,829 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location merge_single_nodeErr5REQUIRES_VIOLATION (98 of 105 remaining) [2021-11-12 23:43:18,829 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location merge_single_nodeErr6REQUIRES_VIOLATION (97 of 105 remaining) [2021-11-12 23:43:18,829 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location merge_single_nodeErr7REQUIRES_VIOLATION (96 of 105 remaining) [2021-11-12 23:43:18,829 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location merge_single_nodeErr8REQUIRES_VIOLATION (95 of 105 remaining) [2021-11-12 23:43:18,829 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location merge_single_nodeErr9REQUIRES_VIOLATION (94 of 105 remaining) [2021-11-12 23:43:18,829 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location merge_single_nodeErr10REQUIRES_VIOLATION (93 of 105 remaining) [2021-11-12 23:43:18,830 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location merge_single_nodeErr11REQUIRES_VIOLATION (92 of 105 remaining) [2021-11-12 23:43:18,830 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location merge_single_nodeErr12REQUIRES_VIOLATION (91 of 105 remaining) [2021-11-12 23:43:18,830 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location merge_single_nodeErr13REQUIRES_VIOLATION (90 of 105 remaining) [2021-11-12 23:43:18,830 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION (89 of 105 remaining) [2021-11-12 23:43:18,830 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION (88 of 105 remaining) [2021-11-12 23:43:18,831 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION (87 of 105 remaining) [2021-11-12 23:43:18,831 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION (86 of 105 remaining) [2021-11-12 23:43:18,831 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION (85 of 105 remaining) [2021-11-12 23:43:18,831 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION (84 of 105 remaining) [2021-11-12 23:43:18,831 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION (83 of 105 remaining) [2021-11-12 23:43:18,832 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION (82 of 105 remaining) [2021-11-12 23:43:18,832 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATION (81 of 105 remaining) [2021-11-12 23:43:18,832 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATION (80 of 105 remaining) [2021-11-12 23:43:18,832 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATION (79 of 105 remaining) [2021-11-12 23:43:18,832 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATION (78 of 105 remaining) [2021-11-12 23:43:18,833 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATION (77 of 105 remaining) [2021-11-12 23:43:18,833 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATION (76 of 105 remaining) [2021-11-12 23:43:18,833 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATION (75 of 105 remaining) [2021-11-12 23:43:18,833 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATION (74 of 105 remaining) [2021-11-12 23:43:18,833 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATION (73 of 105 remaining) [2021-11-12 23:43:18,833 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATION (72 of 105 remaining) [2021-11-12 23:43:18,834 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATION (71 of 105 remaining) [2021-11-12 23:43:18,834 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATION (70 of 105 remaining) [2021-11-12 23:43:18,834 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATION (69 of 105 remaining) [2021-11-12 23:43:18,834 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATION (68 of 105 remaining) [2021-11-12 23:43:18,834 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22REQUIRES_VIOLATION (67 of 105 remaining) [2021-11-12 23:43:18,835 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATION (66 of 105 remaining) [2021-11-12 23:43:18,835 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24REQUIRES_VIOLATION (65 of 105 remaining) [2021-11-12 23:43:18,835 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25REQUIRES_VIOLATION (64 of 105 remaining) [2021-11-12 23:43:18,835 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26REQUIRES_VIOLATION (63 of 105 remaining) [2021-11-12 23:43:18,835 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27REQUIRES_VIOLATION (62 of 105 remaining) [2021-11-12 23:43:18,835 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28REQUIRES_VIOLATION (61 of 105 remaining) [2021-11-12 23:43:18,836 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr29REQUIRES_VIOLATION (60 of 105 remaining) [2021-11-12 23:43:18,836 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr30REQUIRES_VIOLATION (59 of 105 remaining) [2021-11-12 23:43:18,836 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr31REQUIRES_VIOLATION (58 of 105 remaining) [2021-11-12 23:43:18,836 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr32REQUIRES_VIOLATION (57 of 105 remaining) [2021-11-12 23:43:18,836 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr33REQUIRES_VIOLATION (56 of 105 remaining) [2021-11-12 23:43:18,837 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr34REQUIRES_VIOLATION (55 of 105 remaining) [2021-11-12 23:43:18,837 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr35REQUIRES_VIOLATION (54 of 105 remaining) [2021-11-12 23:43:18,837 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr36REQUIRES_VIOLATION (53 of 105 remaining) [2021-11-12 23:43:18,837 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr37REQUIRES_VIOLATION (52 of 105 remaining) [2021-11-12 23:43:18,837 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr38REQUIRES_VIOLATION (51 of 105 remaining) [2021-11-12 23:43:18,838 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr39REQUIRES_VIOLATION (50 of 105 remaining) [2021-11-12 23:43:18,838 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr40REQUIRES_VIOLATION (49 of 105 remaining) [2021-11-12 23:43:18,838 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr41REQUIRES_VIOLATION (48 of 105 remaining) [2021-11-12 23:43:18,838 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr42REQUIRES_VIOLATION (47 of 105 remaining) [2021-11-12 23:43:18,838 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr43REQUIRES_VIOLATION (46 of 105 remaining) [2021-11-12 23:43:18,838 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr44REQUIRES_VIOLATION (45 of 105 remaining) [2021-11-12 23:43:18,839 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr45REQUIRES_VIOLATION (44 of 105 remaining) [2021-11-12 23:43:18,839 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr46REQUIRES_VIOLATION (43 of 105 remaining) [2021-11-12 23:43:18,839 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr47REQUIRES_VIOLATION (42 of 105 remaining) [2021-11-12 23:43:18,839 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr48REQUIRES_VIOLATION (41 of 105 remaining) [2021-11-12 23:43:18,839 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr49REQUIRES_VIOLATION (40 of 105 remaining) [2021-11-12 23:43:18,840 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr50REQUIRES_VIOLATION (39 of 105 remaining) [2021-11-12 23:43:18,840 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr51REQUIRES_VIOLATION (38 of 105 remaining) [2021-11-12 23:43:18,840 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr52REQUIRES_VIOLATION (37 of 105 remaining) [2021-11-12 23:43:18,840 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr53REQUIRES_VIOLATION (36 of 105 remaining) [2021-11-12 23:43:18,840 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr54REQUIRES_VIOLATION (35 of 105 remaining) [2021-11-12 23:43:18,840 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr55REQUIRES_VIOLATION (34 of 105 remaining) [2021-11-12 23:43:18,841 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr56REQUIRES_VIOLATION (33 of 105 remaining) [2021-11-12 23:43:18,841 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr57REQUIRES_VIOLATION (32 of 105 remaining) [2021-11-12 23:43:18,841 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr58REQUIRES_VIOLATION (31 of 105 remaining) [2021-11-12 23:43:18,841 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr59REQUIRES_VIOLATION (30 of 105 remaining) [2021-11-12 23:43:18,841 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr60REQUIRES_VIOLATION (29 of 105 remaining) [2021-11-12 23:43:18,842 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr61REQUIRES_VIOLATION (28 of 105 remaining) [2021-11-12 23:43:18,842 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr62REQUIRES_VIOLATION (27 of 105 remaining) [2021-11-12 23:43:18,842 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr63REQUIRES_VIOLATION (26 of 105 remaining) [2021-11-12 23:43:18,842 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr64ASSERT_VIOLATIONMEMORY_FREE (25 of 105 remaining) [2021-11-12 23:43:18,842 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr65ASSERT_VIOLATIONMEMORY_FREE (24 of 105 remaining) [2021-11-12 23:43:18,843 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr66ASSERT_VIOLATIONMEMORY_FREE (23 of 105 remaining) [2021-11-12 23:43:18,843 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr67REQUIRES_VIOLATION (22 of 105 remaining) [2021-11-12 23:43:18,843 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr68REQUIRES_VIOLATION (21 of 105 remaining) [2021-11-12 23:43:18,843 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr69REQUIRES_VIOLATION (20 of 105 remaining) [2021-11-12 23:43:18,843 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr70REQUIRES_VIOLATION (19 of 105 remaining) [2021-11-12 23:43:18,844 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr71REQUIRES_VIOLATION (18 of 105 remaining) [2021-11-12 23:43:18,844 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr72REQUIRES_VIOLATION (17 of 105 remaining) [2021-11-12 23:43:18,844 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr73REQUIRES_VIOLATION (16 of 105 remaining) [2021-11-12 23:43:18,844 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr74REQUIRES_VIOLATION (15 of 105 remaining) [2021-11-12 23:43:18,844 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr75REQUIRES_VIOLATION (14 of 105 remaining) [2021-11-12 23:43:18,844 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr76REQUIRES_VIOLATION (13 of 105 remaining) [2021-11-12 23:43:18,845 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr77REQUIRES_VIOLATION (12 of 105 remaining) [2021-11-12 23:43:18,845 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr78REQUIRES_VIOLATION (11 of 105 remaining) [2021-11-12 23:43:18,845 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr79REQUIRES_VIOLATION (10 of 105 remaining) [2021-11-12 23:43:18,845 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr80REQUIRES_VIOLATION (9 of 105 remaining) [2021-11-12 23:43:18,845 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr81ASSERT_VIOLATIONMEMORY_FREE (8 of 105 remaining) [2021-11-12 23:43:18,846 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr82ASSERT_VIOLATIONMEMORY_FREE (7 of 105 remaining) [2021-11-12 23:43:18,846 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr83ASSERT_VIOLATIONMEMORY_FREE (6 of 105 remaining) [2021-11-12 23:43:18,846 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr84REQUIRES_VIOLATION (5 of 105 remaining) [2021-11-12 23:43:18,846 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr85REQUIRES_VIOLATION (4 of 105 remaining) [2021-11-12 23:43:18,846 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr86ASSERT_VIOLATIONMEMORY_FREE (3 of 105 remaining) [2021-11-12 23:43:18,847 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr87ASSERT_VIOLATIONMEMORY_FREE (2 of 105 remaining) [2021-11-12 23:43:18,847 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr88ASSERT_VIOLATIONMEMORY_FREE (1 of 105 remaining) [2021-11-12 23:43:18,847 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr89ASSERT_VIOLATIONMEMORY_LEAK (0 of 105 remaining) [2021-11-12 23:43:18,862 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-11-12 23:43:19,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:43:19,062 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:43:19,066 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-12 23:43:19,118 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230) at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.translateProgramExecution(InlinerBacktranslator.java:203) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:216) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:206) at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getProgramExecutionAsString(CounterExampleResult.java:155) at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getLongDescription(CounterExampleResult.java:134) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportLocationResults(TraceAbstractionStarter.java:586) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:181) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-12 23:43:19,121 INFO L158 Benchmark]: Toolchain (without parser) took 47493.19ms. Allocated memory was 60.8MB in the beginning and 136.3MB in the end (delta: 75.5MB). Free memory was 36.6MB in the beginning and 70.1MB in the end (delta: -33.4MB). Peak memory consumption was 42.0MB. Max. memory is 16.1GB. [2021-11-12 23:43:19,121 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 60.8MB. Free memory was 41.3MB in the beginning and 41.3MB in the end (delta: 17.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:43:19,121 INFO L158 Benchmark]: CACSL2BoogieTranslator took 755.28ms. Allocated memory is still 60.8MB. Free memory was 36.4MB in the beginning and 34.0MB in the end (delta: 2.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-12 23:43:19,122 INFO L158 Benchmark]: Boogie Procedure Inliner took 74.53ms. Allocated memory is still 60.8MB. Free memory was 33.8MB in the beginning and 31.2MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-12 23:43:19,122 INFO L158 Benchmark]: Boogie Preprocessor took 54.85ms. Allocated memory is still 60.8MB. Free memory was 31.2MB in the beginning and 28.5MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-12 23:43:19,123 INFO L158 Benchmark]: RCFGBuilder took 1528.23ms. Allocated memory was 60.8MB in the beginning and 102.8MB in the end (delta: 41.9MB). Free memory was 28.3MB in the beginning and 76.5MB in the end (delta: -48.1MB). Peak memory consumption was 21.2MB. Max. memory is 16.1GB. [2021-11-12 23:43:19,123 INFO L158 Benchmark]: TraceAbstraction took 45071.32ms. Allocated memory was 102.8MB in the beginning and 136.3MB in the end (delta: 33.6MB). Free memory was 75.9MB in the beginning and 70.1MB in the end (delta: 5.9MB). Peak memory consumption was 40.4MB. Max. memory is 16.1GB. [2021-11-12 23:43:19,125 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 60.8MB. Free memory was 41.3MB in the beginning and 41.3MB in the end (delta: 17.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 755.28ms. Allocated memory is still 60.8MB. Free memory was 36.4MB in the beginning and 34.0MB in the end (delta: 2.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 74.53ms. Allocated memory is still 60.8MB. Free memory was 33.8MB in the beginning and 31.2MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 54.85ms. Allocated memory is still 60.8MB. Free memory was 31.2MB in the beginning and 28.5MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1528.23ms. Allocated memory was 60.8MB in the beginning and 102.8MB in the end (delta: 41.9MB). Free memory was 28.3MB in the beginning and 76.5MB in the end (delta: -48.1MB). Peak memory consumption was 21.2MB. Max. memory is 16.1GB. * TraceAbstraction took 45071.32ms. Allocated memory was 102.8MB in the beginning and 136.3MB in the end (delta: 33.6MB). Free memory was 75.9MB in the beginning and 70.1MB in the end (delta: 5.9MB). Peak memory consumption was 40.4MB. 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 - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-12 23:43:19,176 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc8e9269-661f-4483-abbf-8ae721f43333/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: NullPointerException: null