./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ntdrivers-simplified/diskperf_simpl1.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ead52b9c-d432-4082-869d-693544504a31/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ead52b9c-d432-4082-869d-693544504a31/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ead52b9c-d432-4082-869d-693544504a31/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ead52b9c-d432-4082-869d-693544504a31/bin/utaipan-q2qaUkNPG8/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ntdrivers-simplified/diskperf_simpl1.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ead52b9c-d432-4082-869d-693544504a31/bin/utaipan-q2qaUkNPG8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ead52b9c-d432-4082-869d-693544504a31/bin/utaipan-q2qaUkNPG8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4df6794b9b3a948996212d63f7c149439c613ff1 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 08:13:30,626 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 08:13:30,629 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 08:13:30,667 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 08:13:30,667 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 08:13:30,669 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 08:13:30,672 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 08:13:30,675 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 08:13:30,678 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 08:13:30,680 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 08:13:30,682 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 08:13:30,684 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 08:13:30,685 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 08:13:30,686 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 08:13:30,689 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 08:13:30,691 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 08:13:30,692 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 08:13:30,694 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 08:13:30,697 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 08:13:30,700 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 08:13:30,702 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 08:13:30,704 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 08:13:30,706 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 08:13:30,708 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 08:13:30,713 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 08:13:30,714 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 08:13:30,714 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 08:13:30,716 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 08:13:30,716 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 08:13:30,718 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 08:13:30,719 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 08:13:30,720 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 08:13:30,722 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 08:13:30,723 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 08:13:30,725 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 08:13:30,725 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 08:13:30,726 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 08:13:30,727 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 08:13:30,727 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 08:13:30,728 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 08:13:30,729 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 08:13:30,731 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ead52b9c-d432-4082-869d-693544504a31/bin/utaipan-q2qaUkNPG8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-10-13 08:13:30,763 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 08:13:30,767 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 08:13:30,769 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 08:13:30,770 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 08:13:30,770 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 08:13:30,770 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 08:13:30,770 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 08:13:30,771 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 08:13:30,771 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 08:13:30,771 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 08:13:30,773 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 08:13:30,773 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 08:13:30,774 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 08:13:30,774 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 08:13:30,774 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 08:13:30,776 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 08:13:30,776 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 08:13:30,777 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 08:13:30,777 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 08:13:30,777 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 08:13:30,778 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 08:13:30,778 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 08:13:30,778 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 08:13:30,779 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-13 08:13:30,779 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-13 08:13:30,779 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-13 08:13:30,781 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 08:13:30,782 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 08:13:30,782 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 08:13:30,782 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 08:13:30,783 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 08:13:30,783 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 08:13:30,783 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 08:13:30,784 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 08:13:30,784 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 08:13:30,785 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 08:13:30,785 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 08:13:30,785 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 08:13:30,785 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 08:13:30,786 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_ead52b9c-d432-4082-869d-693544504a31/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ead52b9c-d432-4082-869d-693544504a31/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4df6794b9b3a948996212d63f7c149439c613ff1 [2021-10-13 08:13:31,181 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 08:13:31,219 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 08:13:31,223 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 08:13:31,225 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 08:13:31,226 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 08:13:31,227 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ead52b9c-d432-4082-869d-693544504a31/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/ntdrivers-simplified/diskperf_simpl1.cil.c [2021-10-13 08:13:31,345 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ead52b9c-d432-4082-869d-693544504a31/bin/utaipan-q2qaUkNPG8/data/9bf967af1/e4ea99009c3749c59977f3d29d886044/FLAGed6b0a688 [2021-10-13 08:13:32,054 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 08:13:32,055 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ead52b9c-d432-4082-869d-693544504a31/sv-benchmarks/c/ntdrivers-simplified/diskperf_simpl1.cil.c [2021-10-13 08:13:32,072 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ead52b9c-d432-4082-869d-693544504a31/bin/utaipan-q2qaUkNPG8/data/9bf967af1/e4ea99009c3749c59977f3d29d886044/FLAGed6b0a688 [2021-10-13 08:13:32,342 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ead52b9c-d432-4082-869d-693544504a31/bin/utaipan-q2qaUkNPG8/data/9bf967af1/e4ea99009c3749c59977f3d29d886044 [2021-10-13 08:13:32,346 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 08:13:32,348 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 08:13:32,350 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 08:13:32,351 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 08:13:32,355 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 08:13:32,356 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:13:32" (1/1) ... [2021-10-13 08:13:32,358 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4917deb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:13:32, skipping insertion in model container [2021-10-13 08:13:32,358 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:13:32" (1/1) ... [2021-10-13 08:13:32,368 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 08:13:32,436 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 08:13:32,731 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_ead52b9c-d432-4082-869d-693544504a31/sv-benchmarks/c/ntdrivers-simplified/diskperf_simpl1.cil.c[2072,2085] [2021-10-13 08:13:32,905 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 08:13:32,921 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 08:13:32,968 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_ead52b9c-d432-4082-869d-693544504a31/sv-benchmarks/c/ntdrivers-simplified/diskperf_simpl1.cil.c[2072,2085] [2021-10-13 08:13:33,095 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 08:13:33,125 INFO L208 MainTranslator]: Completed translation [2021-10-13 08:13:33,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:13:33 WrapperNode [2021-10-13 08:13:33,125 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 08:13:33,126 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 08:13:33,127 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 08:13:33,127 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 08:13:33,135 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:13:33" (1/1) ... [2021-10-13 08:13:33,155 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:13:33" (1/1) ... [2021-10-13 08:13:33,314 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 08:13:33,315 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 08:13:33,316 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 08:13:33,317 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 08:13:33,328 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:13:33" (1/1) ... [2021-10-13 08:13:33,328 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:13:33" (1/1) ... [2021-10-13 08:13:33,353 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:13:33" (1/1) ... [2021-10-13 08:13:33,368 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:13:33" (1/1) ... [2021-10-13 08:13:33,438 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:13:33" (1/1) ... [2021-10-13 08:13:33,495 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:13:33" (1/1) ... [2021-10-13 08:13:33,522 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:13:33" (1/1) ... [2021-10-13 08:13:33,541 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 08:13:33,543 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 08:13:33,544 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 08:13:33,544 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 08:13:33,545 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:13:33" (1/1) ... [2021-10-13 08:13:33,555 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 08:13:33,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ead52b9c-d432-4082-869d-693544504a31/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:13:33,591 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ead52b9c-d432-4082-869d-693544504a31/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 08:13:33,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ead52b9c-d432-4082-869d-693544504a31/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 08:13:33,672 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 08:13:33,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 08:13:33,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 08:13:33,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 08:13:33,986 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-13 08:13:34,009 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-13 08:13:34,015 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-13 08:13:34,043 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-13 08:13:34,052 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-13 08:13:34,073 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-13 08:13:34,082 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-13 08:13:34,086 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-13 08:13:34,091 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-13 08:13:34,096 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-13 08:13:34,099 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-13 08:13:34,101 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-13 08:13:34,106 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-13 08:13:34,109 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-13 08:13:34,110 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-13 08:13:34,115 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-13 08:13:34,118 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-13 08:13:34,126 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-13 08:13:34,129 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-13 08:13:34,134 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-13 08:13:34,141 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-13 08:13:34,150 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-13 08:13:35,455 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##674: assume !false; [2021-10-13 08:13:35,455 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##673: assume false; [2021-10-13 08:13:35,455 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##618: assume !false; [2021-10-13 08:13:35,455 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##617: assume false; [2021-10-13 08:13:35,456 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##296: assume !false; [2021-10-13 08:13:35,456 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##295: assume false; [2021-10-13 08:13:35,456 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##256: assume !false; [2021-10-13 08:13:35,456 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##255: assume false; [2021-10-13 08:13:35,456 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##217: assume !false; [2021-10-13 08:13:35,456 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##216: assume false; [2021-10-13 08:13:35,457 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##247: assume !false; [2021-10-13 08:13:35,457 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##246: assume false; [2021-10-13 08:13:35,458 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##724: assume !false; [2021-10-13 08:13:35,458 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##723: assume false; [2021-10-13 08:13:35,458 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##375: assume !false; [2021-10-13 08:13:35,459 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##374: assume false; [2021-10-13 08:13:35,459 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##326: assume !false; [2021-10-13 08:13:35,459 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##325: assume false; [2021-10-13 08:13:35,459 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##335: assume !false; [2021-10-13 08:13:35,459 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##334: assume false; [2021-10-13 08:13:35,459 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##405: assume !false; [2021-10-13 08:13:35,460 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##404: assume false; [2021-10-13 08:13:35,460 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##412: assume false; [2021-10-13 08:13:35,460 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##413: assume !false; [2021-10-13 08:13:35,461 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##452: assume false; [2021-10-13 08:13:35,461 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##453: assume !false; [2021-10-13 08:13:35,462 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##483: assume !false; [2021-10-13 08:13:35,463 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##482: assume false; [2021-10-13 08:13:35,463 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##543: assume !false; [2021-10-13 08:13:35,463 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##542: assume false; [2021-10-13 08:13:35,463 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##98: assume !false; [2021-10-13 08:13:35,464 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##97: assume false; [2021-10-13 08:13:35,464 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##80: assume !false; [2021-10-13 08:13:35,464 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##172: assume !false; [2021-10-13 08:13:35,464 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##171: assume false; [2021-10-13 08:13:35,464 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##177: assume !false; [2021-10-13 08:13:35,464 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##176: assume false; [2021-10-13 08:13:35,465 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##79: assume false; [2021-10-13 08:13:35,465 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##142: assume !false; [2021-10-13 08:13:35,465 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##141: assume false; [2021-10-13 08:13:35,465 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume false; [2021-10-13 08:13:35,465 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume !false; [2021-10-13 08:13:35,465 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##573: assume !false; [2021-10-13 08:13:35,466 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##572: assume false; [2021-10-13 08:13:36,858 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 08:13:36,858 INFO L299 CfgBuilder]: Removed 267 assume(true) statements. [2021-10-13 08:13:36,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:13:36 BoogieIcfgContainer [2021-10-13 08:13:36,863 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 08:13:36,867 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 08:13:36,867 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 08:13:36,871 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 08:13:36,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:13:32" (1/3) ... [2021-10-13 08:13:36,873 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25cd93d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:13:36, skipping insertion in model container [2021-10-13 08:13:36,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:13:33" (2/3) ... [2021-10-13 08:13:36,873 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25cd93d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:13:36, skipping insertion in model container [2021-10-13 08:13:36,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:13:36" (3/3) ... [2021-10-13 08:13:36,876 INFO L111 eAbstractionObserver]: Analyzing ICFG diskperf_simpl1.cil.c [2021-10-13 08:13:36,888 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 08:13:36,888 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 52 error locations. [2021-10-13 08:13:36,992 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 08:13:37,004 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 08:13:37,005 INFO L340 AbstractCegarLoop]: Starting to check reachability of 52 error locations. [2021-10-13 08:13:37,050 INFO L276 IsEmpty]: Start isEmpty. Operand has 365 states, 312 states have (on average 1.7467948717948718) internal successors, (545), 364 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:37,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-13 08:13:37,059 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:13:37,060 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-13 08:13:37,060 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 49 more)] === [2021-10-13 08:13:37,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:13:37,068 INFO L82 PathProgramCache]: Analyzing trace with hash 67190960, now seen corresponding path program 1 times [2021-10-13 08:13:37,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:13:37,083 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764970846] [2021-10-13 08:13:37,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:13:37,084 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:13:37,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:13:37,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:13:37,357 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:13:37,358 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764970846] [2021-10-13 08:13:37,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764970846] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:13:37,360 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:13:37,360 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 08:13:37,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460236727] [2021-10-13 08:13:37,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 08:13:37,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:13:37,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 08:13:37,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:13:37,404 INFO L87 Difference]: Start difference. First operand has 365 states, 312 states have (on average 1.7467948717948718) internal successors, (545), 364 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.3333333333333333) 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) [2021-10-13 08:13:37,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:13:37,573 INFO L93 Difference]: Finished difference Result 390 states and 526 transitions. [2021-10-13 08:13:37,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 08:13:37,575 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) 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 [2021-10-13 08:13:37,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:13:37,604 INFO L225 Difference]: With dead ends: 390 [2021-10-13 08:13:37,604 INFO L226 Difference]: Without dead ends: 388 [2021-10-13 08:13:37,606 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:13:37,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2021-10-13 08:13:37,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 371. [2021-10-13 08:13:37,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 319 states have (on average 1.5768025078369905) internal successors, (503), 370 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:37,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 503 transitions. [2021-10-13 08:13:37,676 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 503 transitions. Word has length 4 [2021-10-13 08:13:37,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:13:37,676 INFO L470 AbstractCegarLoop]: Abstraction has 371 states and 503 transitions. [2021-10-13 08:13:37,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) 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) [2021-10-13 08:13:37,677 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 503 transitions. [2021-10-13 08:13:37,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 08:13:37,677 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:13:37,678 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-13 08:13:37,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 08:13:37,678 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 49 more)] === [2021-10-13 08:13:37,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:13:37,679 INFO L82 PathProgramCache]: Analyzing trace with hash -88952287, now seen corresponding path program 1 times [2021-10-13 08:13:37,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:13:37,680 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510925752] [2021-10-13 08:13:37,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:13:37,680 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:13:37,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:13:37,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:13:37,736 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:13:37,736 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510925752] [2021-10-13 08:13:37,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510925752] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:13:37,736 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:13:37,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 08:13:37,737 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845413035] [2021-10-13 08:13:37,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 08:13:37,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:13:37,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 08:13:37,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:13:37,740 INFO L87 Difference]: Start difference. First operand 371 states and 503 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:37,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:13:37,828 INFO L93 Difference]: Finished difference Result 614 states and 827 transitions. [2021-10-13 08:13:37,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 08:13:37,828 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-13 08:13:37,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:13:37,833 INFO L225 Difference]: With dead ends: 614 [2021-10-13 08:13:37,833 INFO L226 Difference]: Without dead ends: 614 [2021-10-13 08:13:37,834 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:13:37,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2021-10-13 08:13:37,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 546. [2021-10-13 08:13:37,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 546 states, 500 states have (on average 1.576) internal successors, (788), 545 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:37,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 788 transitions. [2021-10-13 08:13:37,880 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 788 transitions. Word has length 6 [2021-10-13 08:13:37,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:13:37,881 INFO L470 AbstractCegarLoop]: Abstraction has 546 states and 788 transitions. [2021-10-13 08:13:37,881 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:37,881 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 788 transitions. [2021-10-13 08:13:37,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 08:13:37,882 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:13:37,882 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-13 08:13:37,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 08:13:37,883 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 49 more)] === [2021-10-13 08:13:37,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:13:37,884 INFO L82 PathProgramCache]: Analyzing trace with hash 146071095, now seen corresponding path program 1 times [2021-10-13 08:13:37,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:13:37,884 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673017117] [2021-10-13 08:13:37,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:13:37,885 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:13:37,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:13:37,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:13:37,976 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:13:37,976 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673017117] [2021-10-13 08:13:37,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673017117] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:13:37,977 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:13:37,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 08:13:37,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98249829] [2021-10-13 08:13:37,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 08:13:37,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:13:37,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 08:13:37,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:13:37,980 INFO L87 Difference]: Start difference. First operand 546 states and 788 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:38,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:13:38,192 INFO L93 Difference]: Finished difference Result 697 states and 996 transitions. [2021-10-13 08:13:38,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 08:13:38,193 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-13 08:13:38,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:13:38,198 INFO L225 Difference]: With dead ends: 697 [2021-10-13 08:13:38,198 INFO L226 Difference]: Without dead ends: 697 [2021-10-13 08:13:38,199 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:13:38,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2021-10-13 08:13:38,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 686. [2021-10-13 08:13:38,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 686 states, 651 states have (on average 1.5207373271889402) internal successors, (990), 685 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:38,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 990 transitions. [2021-10-13 08:13:38,228 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 990 transitions. Word has length 6 [2021-10-13 08:13:38,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:13:38,229 INFO L470 AbstractCegarLoop]: Abstraction has 686 states and 990 transitions. [2021-10-13 08:13:38,229 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:38,229 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 990 transitions. [2021-10-13 08:13:38,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 08:13:38,230 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:13:38,230 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:13:38,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 08:13:38,231 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 49 more)] === [2021-10-13 08:13:38,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:13:38,231 INFO L82 PathProgramCache]: Analyzing trace with hash 1545341148, now seen corresponding path program 1 times [2021-10-13 08:13:38,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:13:38,232 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385840478] [2021-10-13 08:13:38,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:13:38,232 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:13:38,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:13:38,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:13:38,268 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:13:38,269 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385840478] [2021-10-13 08:13:38,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385840478] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:13:38,269 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:13:38,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-13 08:13:38,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518026865] [2021-10-13 08:13:38,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 08:13:38,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:13:38,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 08:13:38,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:13:38,272 INFO L87 Difference]: Start difference. First operand 686 states and 990 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:38,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:13:38,282 INFO L93 Difference]: Finished difference Result 685 states and 989 transitions. [2021-10-13 08:13:38,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 08:13:38,282 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-13 08:13:38,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:13:38,287 INFO L225 Difference]: With dead ends: 685 [2021-10-13 08:13:38,287 INFO L226 Difference]: Without dead ends: 683 [2021-10-13 08:13:38,288 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:13:38,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2021-10-13 08:13:38,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 678. [2021-10-13 08:13:38,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 678 states, 644 states have (on average 1.5093167701863355) internal successors, (972), 677 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:38,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 972 transitions. [2021-10-13 08:13:38,308 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 972 transitions. Word has length 7 [2021-10-13 08:13:38,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:13:38,308 INFO L470 AbstractCegarLoop]: Abstraction has 678 states and 972 transitions. [2021-10-13 08:13:38,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:38,309 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 972 transitions. [2021-10-13 08:13:38,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 08:13:38,310 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:13:38,310 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:13:38,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-13 08:13:38,311 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr47ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 49 more)] === [2021-10-13 08:13:38,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:13:38,311 INFO L82 PathProgramCache]: Analyzing trace with hash 1730910960, now seen corresponding path program 1 times [2021-10-13 08:13:38,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:13:38,312 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958979593] [2021-10-13 08:13:38,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:13:38,312 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:13:38,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:13:38,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:13:38,345 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:13:38,345 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958979593] [2021-10-13 08:13:38,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958979593] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:13:38,346 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:13:38,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 08:13:38,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101321884] [2021-10-13 08:13:38,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 08:13:38,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:13:38,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 08:13:38,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:13:38,348 INFO L87 Difference]: Start difference. First operand 678 states and 972 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:38,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:13:38,512 INFO L93 Difference]: Finished difference Result 681 states and 974 transitions. [2021-10-13 08:13:38,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 08:13:38,512 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-13 08:13:38,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:13:38,517 INFO L225 Difference]: With dead ends: 681 [2021-10-13 08:13:38,517 INFO L226 Difference]: Without dead ends: 678 [2021-10-13 08:13:38,518 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:13:38,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 678 states. [2021-10-13 08:13:38,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 678 to 678. [2021-10-13 08:13:38,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 678 states, 644 states have (on average 1.5077639751552796) internal successors, (971), 677 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:38,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 971 transitions. [2021-10-13 08:13:38,538 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 971 transitions. Word has length 10 [2021-10-13 08:13:38,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:13:38,538 INFO L470 AbstractCegarLoop]: Abstraction has 678 states and 971 transitions. [2021-10-13 08:13:38,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:38,538 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 971 transitions. [2021-10-13 08:13:38,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 08:13:38,539 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:13:38,540 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:13:38,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-13 08:13:38,540 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 49 more)] === [2021-10-13 08:13:38,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:13:38,541 INFO L82 PathProgramCache]: Analyzing trace with hash -154167574, now seen corresponding path program 1 times [2021-10-13 08:13:38,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:13:38,541 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318160157] [2021-10-13 08:13:38,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:13:38,542 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:13:38,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:13:38,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:13:38,633 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:13:38,633 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318160157] [2021-10-13 08:13:38,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318160157] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:13:38,634 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:13:38,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 08:13:38,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097831949] [2021-10-13 08:13:38,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 08:13:38,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:13:38,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 08:13:38,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:13:38,637 INFO L87 Difference]: Start difference. First operand 678 states and 971 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:38,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:13:38,730 INFO L93 Difference]: Finished difference Result 853 states and 1216 transitions. [2021-10-13 08:13:38,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 08:13:38,731 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-13 08:13:38,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:13:38,737 INFO L225 Difference]: With dead ends: 853 [2021-10-13 08:13:38,737 INFO L226 Difference]: Without dead ends: 853 [2021-10-13 08:13:38,739 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:13:38,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 853 states. [2021-10-13 08:13:38,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 853 to 724. [2021-10-13 08:13:38,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 724 states, 696 states have (on average 1.5244252873563218) internal successors, (1061), 723 states have internal predecessors, (1061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:38,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 1061 transitions. [2021-10-13 08:13:38,767 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 1061 transitions. Word has length 10 [2021-10-13 08:13:38,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:13:38,767 INFO L470 AbstractCegarLoop]: Abstraction has 724 states and 1061 transitions. [2021-10-13 08:13:38,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:38,768 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 1061 transitions. [2021-10-13 08:13:38,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-13 08:13:38,775 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:13:38,775 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:13:38,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-13 08:13:38,777 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 49 more)] === [2021-10-13 08:13:38,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:13:38,778 INFO L82 PathProgramCache]: Analyzing trace with hash 394022861, now seen corresponding path program 1 times [2021-10-13 08:13:38,778 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:13:38,784 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553255036] [2021-10-13 08:13:38,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:13:38,786 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:13:38,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:13:38,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:13:38,876 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:13:38,878 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553255036] [2021-10-13 08:13:38,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553255036] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:13:38,878 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:13:38,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 08:13:38,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833321459] [2021-10-13 08:13:38,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 08:13:38,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:13:38,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 08:13:38,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:13:38,883 INFO L87 Difference]: Start difference. First operand 724 states and 1061 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:39,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:13:39,050 INFO L93 Difference]: Finished difference Result 720 states and 1057 transitions. [2021-10-13 08:13:39,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 08:13:39,051 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-13 08:13:39,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:13:39,062 INFO L225 Difference]: With dead ends: 720 [2021-10-13 08:13:39,062 INFO L226 Difference]: Without dead ends: 720 [2021-10-13 08:13:39,063 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:13:39,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 720 states. [2021-10-13 08:13:39,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 720 to 720. [2021-10-13 08:13:39,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 720 states, 694 states have (on average 1.5230547550432276) internal successors, (1057), 719 states have internal predecessors, (1057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:39,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 720 states to 720 states and 1057 transitions. [2021-10-13 08:13:39,088 INFO L78 Accepts]: Start accepts. Automaton has 720 states and 1057 transitions. Word has length 15 [2021-10-13 08:13:39,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:13:39,089 INFO L470 AbstractCegarLoop]: Abstraction has 720 states and 1057 transitions. [2021-10-13 08:13:39,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:39,089 INFO L276 IsEmpty]: Start isEmpty. Operand 720 states and 1057 transitions. [2021-10-13 08:13:39,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-13 08:13:39,094 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:13:39,097 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:13:39,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-13 08:13:39,097 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr47ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 49 more)] === [2021-10-13 08:13:39,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:13:39,098 INFO L82 PathProgramCache]: Analyzing trace with hash -1722274858, now seen corresponding path program 1 times [2021-10-13 08:13:39,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:13:39,099 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330666890] [2021-10-13 08:13:39,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:13:39,100 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:13:39,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:13:39,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:13:39,161 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:13:39,161 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330666890] [2021-10-13 08:13:39,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330666890] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:13:39,161 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:13:39,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 08:13:39,162 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931677878] [2021-10-13 08:13:39,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 08:13:39,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:13:39,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 08:13:39,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:13:39,163 INFO L87 Difference]: Start difference. First operand 720 states and 1057 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:39,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:13:39,325 INFO L93 Difference]: Finished difference Result 732 states and 1070 transitions. [2021-10-13 08:13:39,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 08:13:39,326 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-13 08:13:39,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:13:39,331 INFO L225 Difference]: With dead ends: 732 [2021-10-13 08:13:39,331 INFO L226 Difference]: Without dead ends: 732 [2021-10-13 08:13:39,332 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:13:39,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states. [2021-10-13 08:13:39,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 732. [2021-10-13 08:13:39,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 732 states, 706 states have (on average 1.5155807365439093) internal successors, (1070), 731 states have internal predecessors, (1070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:39,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 1070 transitions. [2021-10-13 08:13:39,353 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 1070 transitions. Word has length 15 [2021-10-13 08:13:39,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:13:39,353 INFO L470 AbstractCegarLoop]: Abstraction has 732 states and 1070 transitions. [2021-10-13 08:13:39,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:39,354 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 1070 transitions. [2021-10-13 08:13:39,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 08:13:39,355 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:13:39,355 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:13:39,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-13 08:13:39,356 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 49 more)] === [2021-10-13 08:13:39,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:13:39,357 INFO L82 PathProgramCache]: Analyzing trace with hash -1833333272, now seen corresponding path program 1 times [2021-10-13 08:13:39,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:13:39,357 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709949427] [2021-10-13 08:13:39,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:13:39,358 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:13:39,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:13:39,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:13:39,452 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:13:39,452 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709949427] [2021-10-13 08:13:39,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709949427] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:13:39,452 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:13:39,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 08:13:39,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895645548] [2021-10-13 08:13:39,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 08:13:39,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:13:39,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 08:13:39,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 08:13:39,461 INFO L87 Difference]: Start difference. First operand 732 states and 1070 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 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) [2021-10-13 08:13:39,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:13:39,630 INFO L93 Difference]: Finished difference Result 732 states and 1068 transitions. [2021-10-13 08:13:39,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 08:13:39,631 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 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 [2021-10-13 08:13:39,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:13:39,636 INFO L225 Difference]: With dead ends: 732 [2021-10-13 08:13:39,636 INFO L226 Difference]: Without dead ends: 732 [2021-10-13 08:13:39,636 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 08:13:39,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states. [2021-10-13 08:13:39,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 732. [2021-10-13 08:13:39,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 732 states, 706 states have (on average 1.5127478753541077) internal successors, (1068), 731 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:39,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 1068 transitions. [2021-10-13 08:13:39,656 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 1068 transitions. Word has length 16 [2021-10-13 08:13:39,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:13:39,658 INFO L470 AbstractCegarLoop]: Abstraction has 732 states and 1068 transitions. [2021-10-13 08:13:39,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 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) [2021-10-13 08:13:39,659 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 1068 transitions. [2021-10-13 08:13:39,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 08:13:39,659 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:13:39,660 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:13:39,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-13 08:13:39,660 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 49 more)] === [2021-10-13 08:13:39,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:13:39,661 INFO L82 PathProgramCache]: Analyzing trace with hash -1531718427, now seen corresponding path program 1 times [2021-10-13 08:13:39,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:13:39,663 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126371769] [2021-10-13 08:13:39,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:13:39,663 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:13:39,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:13:39,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:13:39,767 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:13:39,767 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126371769] [2021-10-13 08:13:39,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126371769] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:13:39,768 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:13:39,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 08:13:39,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57786977] [2021-10-13 08:13:39,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 08:13:39,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:13:39,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 08:13:39,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 08:13:39,770 INFO L87 Difference]: Start difference. First operand 732 states and 1068 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:39,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:13:39,943 INFO L93 Difference]: Finished difference Result 732 states and 1066 transitions. [2021-10-13 08:13:39,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 08:13:39,943 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-13 08:13:39,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:13:39,949 INFO L225 Difference]: With dead ends: 732 [2021-10-13 08:13:39,949 INFO L226 Difference]: Without dead ends: 732 [2021-10-13 08:13:39,949 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 08:13:39,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states. [2021-10-13 08:13:39,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 732. [2021-10-13 08:13:39,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 732 states, 706 states have (on average 1.5099150141643058) internal successors, (1066), 731 states have internal predecessors, (1066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:39,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 1066 transitions. [2021-10-13 08:13:39,987 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 1066 transitions. Word has length 17 [2021-10-13 08:13:39,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:13:39,991 INFO L470 AbstractCegarLoop]: Abstraction has 732 states and 1066 transitions. [2021-10-13 08:13:39,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:39,992 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 1066 transitions. [2021-10-13 08:13:39,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-13 08:13:39,993 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:13:39,993 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:13:39,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-13 08:13:39,994 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 49 more)] === [2021-10-13 08:13:39,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:13:39,996 INFO L82 PathProgramCache]: Analyzing trace with hash -602588481, now seen corresponding path program 1 times [2021-10-13 08:13:39,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:13:39,997 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150619910] [2021-10-13 08:13:39,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:13:39,998 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:13:40,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:13:40,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:13:40,047 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:13:40,047 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150619910] [2021-10-13 08:13:40,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150619910] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:13:40,047 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:13:40,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 08:13:40,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501834192] [2021-10-13 08:13:40,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 08:13:40,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:13:40,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 08:13:40,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:13:40,051 INFO L87 Difference]: Start difference. First operand 732 states and 1066 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:40,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:13:40,076 INFO L93 Difference]: Finished difference Result 743 states and 1076 transitions. [2021-10-13 08:13:40,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 08:13:40,076 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-13 08:13:40,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:13:40,082 INFO L225 Difference]: With dead ends: 743 [2021-10-13 08:13:40,083 INFO L226 Difference]: Without dead ends: 730 [2021-10-13 08:13:40,083 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:13:40,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 730 states. [2021-10-13 08:13:40,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 730 to 730. [2021-10-13 08:13:40,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 730 states, 704 states have (on average 1.5099431818181819) internal successors, (1063), 729 states have internal predecessors, (1063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:40,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 730 states to 730 states and 1063 transitions. [2021-10-13 08:13:40,104 INFO L78 Accepts]: Start accepts. Automaton has 730 states and 1063 transitions. Word has length 18 [2021-10-13 08:13:40,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:13:40,104 INFO L470 AbstractCegarLoop]: Abstraction has 730 states and 1063 transitions. [2021-10-13 08:13:40,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:40,105 INFO L276 IsEmpty]: Start isEmpty. Operand 730 states and 1063 transitions. [2021-10-13 08:13:40,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-13 08:13:40,106 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:13:40,106 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:13:40,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-13 08:13:40,107 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 49 more)] === [2021-10-13 08:13:40,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:13:40,107 INFO L82 PathProgramCache]: Analyzing trace with hash -383913352, now seen corresponding path program 1 times [2021-10-13 08:13:40,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:13:40,108 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572855436] [2021-10-13 08:13:40,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:13:40,108 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:13:40,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:13:40,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:13:40,162 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:13:40,162 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572855436] [2021-10-13 08:13:40,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572855436] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:13:40,163 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:13:40,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 08:13:40,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636736352] [2021-10-13 08:13:40,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 08:13:40,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:13:40,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 08:13:40,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:13:40,165 INFO L87 Difference]: Start difference. First operand 730 states and 1063 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:40,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:13:40,191 INFO L93 Difference]: Finished difference Result 595 states and 822 transitions. [2021-10-13 08:13:40,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 08:13:40,192 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-13 08:13:40,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:13:40,196 INFO L225 Difference]: With dead ends: 595 [2021-10-13 08:13:40,197 INFO L226 Difference]: Without dead ends: 595 [2021-10-13 08:13:40,197 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:13:40,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2021-10-13 08:13:40,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 582. [2021-10-13 08:13:40,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 582 states, 556 states have (on average 1.4568345323741008) internal successors, (810), 581 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:40,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 810 transitions. [2021-10-13 08:13:40,213 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 810 transitions. Word has length 19 [2021-10-13 08:13:40,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:13:40,215 INFO L470 AbstractCegarLoop]: Abstraction has 582 states and 810 transitions. [2021-10-13 08:13:40,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:40,215 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 810 transitions. [2021-10-13 08:13:40,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-13 08:13:40,216 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:13:40,216 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:13:40,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-13 08:13:40,217 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr47ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 49 more)] === [2021-10-13 08:13:40,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:13:40,218 INFO L82 PathProgramCache]: Analyzing trace with hash -950565082, now seen corresponding path program 1 times [2021-10-13 08:13:40,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:13:40,219 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994765655] [2021-10-13 08:13:40,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:13:40,219 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:13:40,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:13:40,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:13:40,271 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:13:40,272 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994765655] [2021-10-13 08:13:40,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994765655] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:13:40,272 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:13:40,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 08:13:40,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047141962] [2021-10-13 08:13:40,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 08:13:40,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:13:40,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 08:13:40,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:13:40,275 INFO L87 Difference]: Start difference. First operand 582 states and 810 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:40,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:13:40,461 INFO L93 Difference]: Finished difference Result 874 states and 1236 transitions. [2021-10-13 08:13:40,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 08:13:40,462 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-13 08:13:40,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:13:40,468 INFO L225 Difference]: With dead ends: 874 [2021-10-13 08:13:40,468 INFO L226 Difference]: Without dead ends: 874 [2021-10-13 08:13:40,469 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:13:40,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 874 states. [2021-10-13 08:13:40,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 874 to 592. [2021-10-13 08:13:40,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 592 states, 566 states have (on average 1.4505300353356891) internal successors, (821), 591 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:40,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 821 transitions. [2021-10-13 08:13:40,488 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 821 transitions. Word has length 20 [2021-10-13 08:13:40,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:13:40,489 INFO L470 AbstractCegarLoop]: Abstraction has 592 states and 821 transitions. [2021-10-13 08:13:40,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:40,489 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 821 transitions. [2021-10-13 08:13:40,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-13 08:13:40,490 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:13:40,490 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:13:40,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-13 08:13:40,491 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 49 more)] === [2021-10-13 08:13:40,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:13:40,491 INFO L82 PathProgramCache]: Analyzing trace with hash 54236982, now seen corresponding path program 1 times [2021-10-13 08:13:40,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:13:40,492 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542167801] [2021-10-13 08:13:40,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:13:40,492 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:13:40,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:13:40,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:13:40,528 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:13:40,528 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542167801] [2021-10-13 08:13:40,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542167801] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:13:40,528 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:13:40,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 08:13:40,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234405485] [2021-10-13 08:13:40,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 08:13:40,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:13:40,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 08:13:40,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:13:40,531 INFO L87 Difference]: Start difference. First operand 592 states and 821 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:40,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:13:40,671 INFO L93 Difference]: Finished difference Result 608 states and 839 transitions. [2021-10-13 08:13:40,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 08:13:40,671 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-13 08:13:40,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:13:40,676 INFO L225 Difference]: With dead ends: 608 [2021-10-13 08:13:40,676 INFO L226 Difference]: Without dead ends: 608 [2021-10-13 08:13:40,676 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:13:40,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2021-10-13 08:13:40,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 608. [2021-10-13 08:13:40,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 584 states have (on average 1.4366438356164384) internal successors, (839), 607 states have internal predecessors, (839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:40,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 839 transitions. [2021-10-13 08:13:40,693 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 839 transitions. Word has length 20 [2021-10-13 08:13:40,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:13:40,693 INFO L470 AbstractCegarLoop]: Abstraction has 608 states and 839 transitions. [2021-10-13 08:13:40,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:40,694 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 839 transitions. [2021-10-13 08:13:40,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-13 08:13:40,695 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:13:40,695 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:13:40,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-10-13 08:13:40,696 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr50ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 49 more)] === [2021-10-13 08:13:40,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:13:40,696 INFO L82 PathProgramCache]: Analyzing trace with hash 614845220, now seen corresponding path program 1 times [2021-10-13 08:13:40,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:13:40,697 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669228531] [2021-10-13 08:13:40,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:13:40,697 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:13:40,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:13:40,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:13:40,740 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:13:40,740 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669228531] [2021-10-13 08:13:40,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669228531] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:13:40,741 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:13:40,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 08:13:40,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80045326] [2021-10-13 08:13:40,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 08:13:40,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:13:40,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 08:13:40,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 08:13:40,743 INFO L87 Difference]: Start difference. First operand 608 states and 839 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:40,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:13:40,978 INFO L93 Difference]: Finished difference Result 890 states and 1253 transitions. [2021-10-13 08:13:40,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 08:13:40,979 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-13 08:13:40,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:13:40,985 INFO L225 Difference]: With dead ends: 890 [2021-10-13 08:13:40,986 INFO L226 Difference]: Without dead ends: 890 [2021-10-13 08:13:40,986 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 08:13:40,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2021-10-13 08:13:41,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 608. [2021-10-13 08:13:41,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 584 states have (on average 1.4349315068493151) internal successors, (838), 607 states have internal predecessors, (838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:41,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 838 transitions. [2021-10-13 08:13:41,035 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 838 transitions. Word has length 21 [2021-10-13 08:13:41,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:13:41,035 INFO L470 AbstractCegarLoop]: Abstraction has 608 states and 838 transitions. [2021-10-13 08:13:41,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:41,036 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 838 transitions. [2021-10-13 08:13:41,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 08:13:41,037 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:13:41,037 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:13:41,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-10-13 08:13:41,038 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr50ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 49 more)] === [2021-10-13 08:13:41,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:13:41,039 INFO L82 PathProgramCache]: Analyzing trace with hash 1347013313, now seen corresponding path program 1 times [2021-10-13 08:13:41,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:13:41,039 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213586313] [2021-10-13 08:13:41,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:13:41,040 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:13:41,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:13:41,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:13:41,118 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:13:41,119 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213586313] [2021-10-13 08:13:41,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213586313] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:13:41,119 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:13:41,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 08:13:41,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062948130] [2021-10-13 08:13:41,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 08:13:41,121 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:13:41,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 08:13:41,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 08:13:41,122 INFO L87 Difference]: Start difference. First operand 608 states and 838 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:41,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:13:41,291 INFO L93 Difference]: Finished difference Result 669 states and 898 transitions. [2021-10-13 08:13:41,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 08:13:41,292 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-13 08:13:41,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:13:41,296 INFO L225 Difference]: With dead ends: 669 [2021-10-13 08:13:41,297 INFO L226 Difference]: Without dead ends: 667 [2021-10-13 08:13:41,297 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 38.0ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-13 08:13:41,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2021-10-13 08:13:41,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 615. [2021-10-13 08:13:41,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 615 states, 591 states have (on average 1.4297800338409477) internal successors, (845), 614 states have internal predecessors, (845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:41,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 845 transitions. [2021-10-13 08:13:41,316 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 845 transitions. Word has length 22 [2021-10-13 08:13:41,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:13:41,317 INFO L470 AbstractCegarLoop]: Abstraction has 615 states and 845 transitions. [2021-10-13 08:13:41,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:41,317 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 845 transitions. [2021-10-13 08:13:41,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 08:13:41,319 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:13:41,319 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:13:41,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-10-13 08:13:41,320 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 49 more)] === [2021-10-13 08:13:41,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:13:41,320 INFO L82 PathProgramCache]: Analyzing trace with hash 1347001397, now seen corresponding path program 1 times [2021-10-13 08:13:41,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:13:41,321 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966430371] [2021-10-13 08:13:41,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:13:41,321 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:13:41,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:13:41,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:13:41,379 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:13:41,379 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966430371] [2021-10-13 08:13:41,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966430371] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:13:41,379 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:13:41,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 08:13:41,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690891017] [2021-10-13 08:13:41,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 08:13:41,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:13:41,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 08:13:41,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 08:13:41,382 INFO L87 Difference]: Start difference. First operand 615 states and 845 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:41,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:13:41,607 INFO L93 Difference]: Finished difference Result 893 states and 1256 transitions. [2021-10-13 08:13:41,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 08:13:41,608 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-13 08:13:41,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:13:41,614 INFO L225 Difference]: With dead ends: 893 [2021-10-13 08:13:41,614 INFO L226 Difference]: Without dead ends: 874 [2021-10-13 08:13:41,615 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.4ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 08:13:41,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 874 states. [2021-10-13 08:13:41,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 874 to 600. [2021-10-13 08:13:41,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 600 states, 576 states have (on average 1.4375) internal successors, (828), 599 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:41,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 828 transitions. [2021-10-13 08:13:41,634 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 828 transitions. Word has length 22 [2021-10-13 08:13:41,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:13:41,635 INFO L470 AbstractCegarLoop]: Abstraction has 600 states and 828 transitions. [2021-10-13 08:13:41,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:41,635 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 828 transitions. [2021-10-13 08:13:41,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 08:13:41,636 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:13:41,637 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:13:41,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-10-13 08:13:41,637 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 49 more)] === [2021-10-13 08:13:41,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:13:41,638 INFO L82 PathProgramCache]: Analyzing trace with hash -1544802929, now seen corresponding path program 1 times [2021-10-13 08:13:41,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:13:41,638 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588534810] [2021-10-13 08:13:41,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:13:41,639 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:13:41,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:13:41,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:13:41,679 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:13:41,679 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588534810] [2021-10-13 08:13:41,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588534810] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:13:41,679 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:13:41,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 08:13:41,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850668658] [2021-10-13 08:13:41,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 08:13:41,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:13:41,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 08:13:41,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:13:41,681 INFO L87 Difference]: Start difference. First operand 600 states and 828 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:41,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:13:41,851 INFO L93 Difference]: Finished difference Result 815 states and 1134 transitions. [2021-10-13 08:13:41,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 08:13:41,851 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-13 08:13:41,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:13:41,857 INFO L225 Difference]: With dead ends: 815 [2021-10-13 08:13:41,858 INFO L226 Difference]: Without dead ends: 815 [2021-10-13 08:13:41,858 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:13:41,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 815 states. [2021-10-13 08:13:41,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 815 to 624. [2021-10-13 08:13:41,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 624 states, 600 states have (on average 1.44) internal successors, (864), 623 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:41,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 624 states to 624 states and 864 transitions. [2021-10-13 08:13:41,877 INFO L78 Accepts]: Start accepts. Automaton has 624 states and 864 transitions. Word has length 22 [2021-10-13 08:13:41,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:13:41,877 INFO L470 AbstractCegarLoop]: Abstraction has 624 states and 864 transitions. [2021-10-13 08:13:41,877 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:41,878 INFO L276 IsEmpty]: Start isEmpty. Operand 624 states and 864 transitions. [2021-10-13 08:13:41,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 08:13:41,878 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:13:41,879 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:13:41,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-10-13 08:13:41,879 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 49 more)] === [2021-10-13 08:13:41,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:13:41,880 INFO L82 PathProgramCache]: Analyzing trace with hash 707895288, now seen corresponding path program 1 times [2021-10-13 08:13:41,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:13:41,880 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223231460] [2021-10-13 08:13:41,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:13:41,881 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:13:41,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:13:42,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:13:42,029 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:13:42,029 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223231460] [2021-10-13 08:13:42,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223231460] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:13:42,030 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:13:42,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 08:13:42,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930187341] [2021-10-13 08:13:42,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 08:13:42,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:13:42,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 08:13:42,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 08:13:42,033 INFO L87 Difference]: Start difference. First operand 624 states and 864 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:42,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:13:42,161 INFO L93 Difference]: Finished difference Result 934 states and 1286 transitions. [2021-10-13 08:13:42,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 08:13:42,161 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-13 08:13:42,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:13:42,167 INFO L225 Difference]: With dead ends: 934 [2021-10-13 08:13:42,167 INFO L226 Difference]: Without dead ends: 934 [2021-10-13 08:13:42,168 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.3ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 08:13:42,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 934 states. [2021-10-13 08:13:42,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 934 to 660. [2021-10-13 08:13:42,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 660 states, 636 states have (on average 1.4150943396226414) internal successors, (900), 659 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:42,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 660 states to 660 states and 900 transitions. [2021-10-13 08:13:42,187 INFO L78 Accepts]: Start accepts. Automaton has 660 states and 900 transitions. Word has length 22 [2021-10-13 08:13:42,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:13:42,187 INFO L470 AbstractCegarLoop]: Abstraction has 660 states and 900 transitions. [2021-10-13 08:13:42,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:42,188 INFO L276 IsEmpty]: Start isEmpty. Operand 660 states and 900 transitions. [2021-10-13 08:13:42,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-13 08:13:42,188 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:13:42,189 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:13:42,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-10-13 08:13:42,189 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 49 more)] === [2021-10-13 08:13:42,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:13:42,190 INFO L82 PathProgramCache]: Analyzing trace with hash 1855206658, now seen corresponding path program 1 times [2021-10-13 08:13:42,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:13:42,190 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828343931] [2021-10-13 08:13:42,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:13:42,190 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:13:42,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:13:42,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:13:42,231 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:13:42,231 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828343931] [2021-10-13 08:13:42,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828343931] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:13:42,231 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:13:42,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 08:13:42,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617616708] [2021-10-13 08:13:42,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 08:13:42,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:13:42,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 08:13:42,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 08:13:42,233 INFO L87 Difference]: Start difference. First operand 660 states and 900 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:42,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:13:42,293 INFO L93 Difference]: Finished difference Result 687 states and 925 transitions. [2021-10-13 08:13:42,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 08:13:42,294 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 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 23 [2021-10-13 08:13:42,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:13:42,298 INFO L225 Difference]: With dead ends: 687 [2021-10-13 08:13:42,298 INFO L226 Difference]: Without dead ends: 658 [2021-10-13 08:13:42,298 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 27.5ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-13 08:13:42,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2021-10-13 08:13:42,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 658. [2021-10-13 08:13:42,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 658 states, 634 states have (on average 1.413249211356467) internal successors, (896), 657 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:42,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 896 transitions. [2021-10-13 08:13:42,340 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 896 transitions. Word has length 23 [2021-10-13 08:13:42,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:13:42,341 INFO L470 AbstractCegarLoop]: Abstraction has 658 states and 896 transitions. [2021-10-13 08:13:42,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:42,341 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 896 transitions. [2021-10-13 08:13:42,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-13 08:13:42,342 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:13:42,342 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:13:42,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-10-13 08:13:42,342 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr47ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 49 more)] === [2021-10-13 08:13:42,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:13:42,343 INFO L82 PathProgramCache]: Analyzing trace with hash 1705702936, now seen corresponding path program 1 times [2021-10-13 08:13:42,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:13:42,343 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969835234] [2021-10-13 08:13:42,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:13:42,344 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:13:42,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:13:42,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:13:42,379 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:13:42,379 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969835234] [2021-10-13 08:13:42,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969835234] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:13:42,379 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:13:42,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 08:13:42,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301804391] [2021-10-13 08:13:42,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 08:13:42,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:13:42,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 08:13:42,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 08:13:42,381 INFO L87 Difference]: Start difference. First operand 658 states and 896 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:42,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:13:42,553 INFO L93 Difference]: Finished difference Result 658 states and 894 transitions. [2021-10-13 08:13:42,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 08:13:42,554 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 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 23 [2021-10-13 08:13:42,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:13:42,558 INFO L225 Difference]: With dead ends: 658 [2021-10-13 08:13:42,558 INFO L226 Difference]: Without dead ends: 658 [2021-10-13 08:13:42,559 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 08:13:42,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2021-10-13 08:13:42,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 658. [2021-10-13 08:13:42,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 658 states, 634 states have (on average 1.4100946372239747) internal successors, (894), 657 states have internal predecessors, (894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:42,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 894 transitions. [2021-10-13 08:13:42,576 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 894 transitions. Word has length 23 [2021-10-13 08:13:42,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:13:42,576 INFO L470 AbstractCegarLoop]: Abstraction has 658 states and 894 transitions. [2021-10-13 08:13:42,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:42,577 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 894 transitions. [2021-10-13 08:13:42,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-13 08:13:42,577 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:13:42,578 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:13:42,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-10-13 08:13:42,578 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 49 more)] === [2021-10-13 08:13:42,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:13:42,579 INFO L82 PathProgramCache]: Analyzing trace with hash 2054493699, now seen corresponding path program 1 times [2021-10-13 08:13:42,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:13:42,579 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415551043] [2021-10-13 08:13:42,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:13:42,579 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:13:42,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:13:42,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:13:42,638 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:13:42,639 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415551043] [2021-10-13 08:13:42,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415551043] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:13:42,639 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:13:42,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 08:13:42,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401150981] [2021-10-13 08:13:42,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 08:13:42,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:13:42,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 08:13:42,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 08:13:42,641 INFO L87 Difference]: Start difference. First operand 658 states and 894 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:42,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:13:42,815 INFO L93 Difference]: Finished difference Result 673 states and 897 transitions. [2021-10-13 08:13:42,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 08:13:42,816 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 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 23 [2021-10-13 08:13:42,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:13:42,820 INFO L225 Difference]: With dead ends: 673 [2021-10-13 08:13:42,821 INFO L226 Difference]: Without dead ends: 673 [2021-10-13 08:13:42,823 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 08:13:42,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2021-10-13 08:13:42,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 658. [2021-10-13 08:13:42,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 658 states, 634 states have (on average 1.391167192429022) internal successors, (882), 657 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:42,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 882 transitions. [2021-10-13 08:13:42,841 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 882 transitions. Word has length 23 [2021-10-13 08:13:42,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:13:42,842 INFO L470 AbstractCegarLoop]: Abstraction has 658 states and 882 transitions. [2021-10-13 08:13:42,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:42,842 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 882 transitions. [2021-10-13 08:13:42,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-13 08:13:42,844 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:13:42,844 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:13:42,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-10-13 08:13:42,845 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr47ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 49 more)] === [2021-10-13 08:13:42,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:13:42,845 INFO L82 PathProgramCache]: Analyzing trace with hash 1726712738, now seen corresponding path program 1 times [2021-10-13 08:13:42,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:13:42,846 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305662552] [2021-10-13 08:13:42,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:13:42,846 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:13:42,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:13:42,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:13:42,890 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:13:42,890 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305662552] [2021-10-13 08:13:42,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305662552] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:13:42,890 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:13:42,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 08:13:42,891 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466905850] [2021-10-13 08:13:42,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 08:13:42,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:13:42,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 08:13:42,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:13:42,895 INFO L87 Difference]: Start difference. First operand 658 states and 882 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 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) [2021-10-13 08:13:43,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:13:43,068 INFO L93 Difference]: Finished difference Result 886 states and 1213 transitions. [2021-10-13 08:13:43,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 08:13:43,069 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 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 [2021-10-13 08:13:43,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:13:43,075 INFO L225 Difference]: With dead ends: 886 [2021-10-13 08:13:43,075 INFO L226 Difference]: Without dead ends: 886 [2021-10-13 08:13:43,075 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:13:43,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 886 states. [2021-10-13 08:13:43,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 886 to 654. [2021-10-13 08:13:43,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 654 states, 631 states have (on average 1.388272583201268) internal successors, (876), 653 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:43,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 876 transitions. [2021-10-13 08:13:43,097 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 876 transitions. Word has length 24 [2021-10-13 08:13:43,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:13:43,099 INFO L470 AbstractCegarLoop]: Abstraction has 654 states and 876 transitions. [2021-10-13 08:13:43,099 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 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) [2021-10-13 08:13:43,099 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 876 transitions. [2021-10-13 08:13:43,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-13 08:13:43,101 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:13:43,101 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:13:43,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-10-13 08:13:43,102 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr50ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 49 more)] === [2021-10-13 08:13:43,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:13:43,102 INFO L82 PathProgramCache]: Analyzing trace with hash 1478595672, now seen corresponding path program 1 times [2021-10-13 08:13:43,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:13:43,103 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719978079] [2021-10-13 08:13:43,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:13:43,103 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:13:43,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:13:43,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:13:43,177 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:13:43,177 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719978079] [2021-10-13 08:13:43,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719978079] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:13:43,178 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:13:43,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 08:13:43,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228746503] [2021-10-13 08:13:43,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 08:13:43,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:13:43,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 08:13:43,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 08:13:43,180 INFO L87 Difference]: Start difference. First operand 654 states and 876 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 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) [2021-10-13 08:13:43,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:13:43,334 INFO L93 Difference]: Finished difference Result 657 states and 877 transitions. [2021-10-13 08:13:43,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 08:13:43,336 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 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 [2021-10-13 08:13:43,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:13:43,339 INFO L225 Difference]: With dead ends: 657 [2021-10-13 08:13:43,339 INFO L226 Difference]: Without dead ends: 657 [2021-10-13 08:13:43,340 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 08:13:43,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2021-10-13 08:13:43,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 642. [2021-10-13 08:13:43,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 619 states have (on average 1.3925686591276252) internal successors, (862), 641 states have internal predecessors, (862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:43,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 862 transitions. [2021-10-13 08:13:43,355 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 862 transitions. Word has length 24 [2021-10-13 08:13:43,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:13:43,355 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 862 transitions. [2021-10-13 08:13:43,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 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) [2021-10-13 08:13:43,355 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 862 transitions. [2021-10-13 08:13:43,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-13 08:13:43,356 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:13:43,356 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:13:43,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-10-13 08:13:43,357 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 49 more)] === [2021-10-13 08:13:43,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:13:43,357 INFO L82 PathProgramCache]: Analyzing trace with hash 1622118277, now seen corresponding path program 1 times [2021-10-13 08:13:43,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:13:43,357 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813836564] [2021-10-13 08:13:43,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:13:43,358 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:13:43,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:13:43,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:13:43,388 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:13:43,389 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813836564] [2021-10-13 08:13:43,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813836564] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:13:43,389 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:13:43,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 08:13:43,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836349176] [2021-10-13 08:13:43,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 08:13:43,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:13:43,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 08:13:43,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:13:43,390 INFO L87 Difference]: Start difference. First operand 642 states and 862 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 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) [2021-10-13 08:13:43,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:13:43,417 INFO L93 Difference]: Finished difference Result 260 states and 316 transitions. [2021-10-13 08:13:43,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 08:13:43,418 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 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 [2021-10-13 08:13:43,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:13:43,420 INFO L225 Difference]: With dead ends: 260 [2021-10-13 08:13:43,420 INFO L226 Difference]: Without dead ends: 260 [2021-10-13 08:13:43,420 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:13:43,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2021-10-13 08:13:43,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 260. [2021-10-13 08:13:43,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 246 states have (on average 1.2845528455284554) internal successors, (316), 259 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:43,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 316 transitions. [2021-10-13 08:13:43,433 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 316 transitions. Word has length 24 [2021-10-13 08:13:43,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:13:43,434 INFO L470 AbstractCegarLoop]: Abstraction has 260 states and 316 transitions. [2021-10-13 08:13:43,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 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) [2021-10-13 08:13:43,435 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 316 transitions. [2021-10-13 08:13:43,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-13 08:13:43,435 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:13:43,436 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:13:43,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-10-13 08:13:43,436 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 49 more)] === [2021-10-13 08:13:43,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:13:43,437 INFO L82 PathProgramCache]: Analyzing trace with hash 502548810, now seen corresponding path program 1 times [2021-10-13 08:13:43,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:13:43,437 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948874257] [2021-10-13 08:13:43,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:13:43,437 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:13:43,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:13:43,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:13:43,531 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:13:43,532 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948874257] [2021-10-13 08:13:43,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948874257] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:13:43,532 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:13:43,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 08:13:43,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001928907] [2021-10-13 08:13:43,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 08:13:43,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:13:43,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 08:13:43,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 08:13:43,535 INFO L87 Difference]: Start difference. First operand 260 states and 316 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 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) [2021-10-13 08:13:43,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:13:43,740 INFO L93 Difference]: Finished difference Result 275 states and 332 transitions. [2021-10-13 08:13:43,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 08:13:43,740 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 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 [2021-10-13 08:13:43,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:13:43,742 INFO L225 Difference]: With dead ends: 275 [2021-10-13 08:13:43,742 INFO L226 Difference]: Without dead ends: 275 [2021-10-13 08:13:43,743 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 33.6ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-10-13 08:13:43,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2021-10-13 08:13:43,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 260. [2021-10-13 08:13:43,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 246 states have (on average 1.2845528455284554) internal successors, (316), 259 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:43,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 316 transitions. [2021-10-13 08:13:43,751 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 316 transitions. Word has length 24 [2021-10-13 08:13:43,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:13:43,751 INFO L470 AbstractCegarLoop]: Abstraction has 260 states and 316 transitions. [2021-10-13 08:13:43,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 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) [2021-10-13 08:13:43,752 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 316 transitions. [2021-10-13 08:13:43,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 08:13:43,752 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:13:43,753 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:13:43,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-10-13 08:13:43,753 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr50ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 49 more)] === [2021-10-13 08:13:43,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:13:43,754 INFO L82 PathProgramCache]: Analyzing trace with hash 2006079016, now seen corresponding path program 1 times [2021-10-13 08:13:43,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:13:43,754 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255089436] [2021-10-13 08:13:43,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:13:43,754 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:13:43,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:13:43,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:13:43,871 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:13:43,871 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255089436] [2021-10-13 08:13:43,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255089436] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:13:43,872 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:13:43,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 08:13:43,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180641065] [2021-10-13 08:13:43,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 08:13:43,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:13:43,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 08:13:43,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 08:13:43,874 INFO L87 Difference]: Start difference. First operand 260 states and 316 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:43,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:13:43,924 INFO L93 Difference]: Finished difference Result 272 states and 327 transitions. [2021-10-13 08:13:43,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 08:13:43,929 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-13 08:13:43,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:13:43,930 INFO L225 Difference]: With dead ends: 272 [2021-10-13 08:13:43,931 INFO L226 Difference]: Without dead ends: 271 [2021-10-13 08:13:43,931 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 08:13:43,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2021-10-13 08:13:43,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 266. [2021-10-13 08:13:43,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 252 states have (on average 1.2777777777777777) internal successors, (322), 265 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:43,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 322 transitions. [2021-10-13 08:13:43,937 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 322 transitions. Word has length 25 [2021-10-13 08:13:43,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:13:43,937 INFO L470 AbstractCegarLoop]: Abstraction has 266 states and 322 transitions. [2021-10-13 08:13:43,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:43,938 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 322 transitions. [2021-10-13 08:13:43,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 08:13:43,939 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:13:43,939 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:13:43,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-10-13 08:13:43,939 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 49 more)] === [2021-10-13 08:13:43,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:13:43,940 INFO L82 PathProgramCache]: Analyzing trace with hash 2006067100, now seen corresponding path program 1 times [2021-10-13 08:13:43,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:13:43,940 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345727980] [2021-10-13 08:13:43,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:13:43,941 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:13:43,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:13:43,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:13:43,985 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:13:43,985 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345727980] [2021-10-13 08:13:43,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345727980] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:13:43,986 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:13:43,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 08:13:43,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210121746] [2021-10-13 08:13:43,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 08:13:43,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:13:43,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 08:13:43,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 08:13:43,987 INFO L87 Difference]: Start difference. First operand 266 states and 322 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:44,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:13:44,086 INFO L93 Difference]: Finished difference Result 268 states and 322 transitions. [2021-10-13 08:13:44,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 08:13:44,087 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-13 08:13:44,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:13:44,089 INFO L225 Difference]: With dead ends: 268 [2021-10-13 08:13:44,089 INFO L226 Difference]: Without dead ends: 251 [2021-10-13 08:13:44,089 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 08:13:44,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2021-10-13 08:13:44,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 251. [2021-10-13 08:13:44,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 237 states have (on average 1.2869198312236287) internal successors, (305), 250 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:44,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 305 transitions. [2021-10-13 08:13:44,096 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 305 transitions. Word has length 25 [2021-10-13 08:13:44,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:13:44,096 INFO L470 AbstractCegarLoop]: Abstraction has 251 states and 305 transitions. [2021-10-13 08:13:44,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:44,097 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 305 transitions. [2021-10-13 08:13:44,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 08:13:44,097 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:13:44,097 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:13:44,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-10-13 08:13:44,098 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 49 more)] === [2021-10-13 08:13:44,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:13:44,098 INFO L82 PathProgramCache]: Analyzing trace with hash -494569094, now seen corresponding path program 1 times [2021-10-13 08:13:44,099 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:13:44,099 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846292713] [2021-10-13 08:13:44,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:13:44,099 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:13:44,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:13:44,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:13:44,141 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:13:44,141 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846292713] [2021-10-13 08:13:44,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846292713] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:13:44,141 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:13:44,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 08:13:44,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278840670] [2021-10-13 08:13:44,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 08:13:44,142 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:13:44,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 08:13:44,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:13:44,143 INFO L87 Difference]: Start difference. First operand 251 states and 305 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:44,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:13:44,174 INFO L93 Difference]: Finished difference Result 277 states and 329 transitions. [2021-10-13 08:13:44,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 08:13:44,175 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-13 08:13:44,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:13:44,177 INFO L225 Difference]: With dead ends: 277 [2021-10-13 08:13:44,177 INFO L226 Difference]: Without dead ends: 277 [2021-10-13 08:13:44,179 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:13:44,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2021-10-13 08:13:44,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 227. [2021-10-13 08:13:44,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 219 states have (on average 1.2283105022831051) internal successors, (269), 226 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:44,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 269 transitions. [2021-10-13 08:13:44,185 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 269 transitions. Word has length 25 [2021-10-13 08:13:44,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:13:44,185 INFO L470 AbstractCegarLoop]: Abstraction has 227 states and 269 transitions. [2021-10-13 08:13:44,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:44,185 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 269 transitions. [2021-10-13 08:13:44,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-13 08:13:44,186 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:13:44,186 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:13:44,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-10-13 08:13:44,187 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 49 more)] === [2021-10-13 08:13:44,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:13:44,188 INFO L82 PathProgramCache]: Analyzing trace with hash -1378140045, now seen corresponding path program 1 times [2021-10-13 08:13:44,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:13:44,188 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609711752] [2021-10-13 08:13:44,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:13:44,189 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:13:44,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:13:44,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:13:44,229 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:13:44,229 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609711752] [2021-10-13 08:13:44,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609711752] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:13:44,230 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:13:44,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 08:13:44,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252163054] [2021-10-13 08:13:44,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 08:13:44,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:13:44,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 08:13:44,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 08:13:44,231 INFO L87 Difference]: Start difference. First operand 227 states and 269 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:44,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:13:44,266 INFO L93 Difference]: Finished difference Result 238 states and 279 transitions. [2021-10-13 08:13:44,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 08:13:44,267 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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 [2021-10-13 08:13:44,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:13:44,269 INFO L225 Difference]: With dead ends: 238 [2021-10-13 08:13:44,269 INFO L226 Difference]: Without dead ends: 217 [2021-10-13 08:13:44,270 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.3ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-13 08:13:44,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-10-13 08:13:44,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2021-10-13 08:13:44,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 209 states have (on average 1.229665071770335) internal successors, (257), 216 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:44,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 257 transitions. [2021-10-13 08:13:44,276 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 257 transitions. Word has length 27 [2021-10-13 08:13:44,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:13:44,276 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 257 transitions. [2021-10-13 08:13:44,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:44,277 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 257 transitions. [2021-10-13 08:13:44,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-13 08:13:44,277 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:13:44,277 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:13:44,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-10-13 08:13:44,278 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr50ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 49 more)] === [2021-10-13 08:13:44,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:13:44,278 INFO L82 PathProgramCache]: Analyzing trace with hash -169609689, now seen corresponding path program 1 times [2021-10-13 08:13:44,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:13:44,279 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095325697] [2021-10-13 08:13:44,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:13:44,279 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:13:44,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:13:44,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:13:44,321 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:13:44,321 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095325697] [2021-10-13 08:13:44,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095325697] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:13:44,322 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:13:44,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 08:13:44,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288901666] [2021-10-13 08:13:44,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 08:13:44,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:13:44,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 08:13:44,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 08:13:44,323 INFO L87 Difference]: Start difference. First operand 217 states and 257 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:44,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:13:44,403 INFO L93 Difference]: Finished difference Result 215 states and 255 transitions. [2021-10-13 08:13:44,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 08:13:44,403 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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 [2021-10-13 08:13:44,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:13:44,405 INFO L225 Difference]: With dead ends: 215 [2021-10-13 08:13:44,405 INFO L226 Difference]: Without dead ends: 197 [2021-10-13 08:13:44,405 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.6ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-13 08:13:44,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2021-10-13 08:13:44,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2021-10-13 08:13:44,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 190 states have (on average 1.2473684210526317) internal successors, (237), 196 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:44,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 237 transitions. [2021-10-13 08:13:44,411 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 237 transitions. Word has length 27 [2021-10-13 08:13:44,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:13:44,412 INFO L470 AbstractCegarLoop]: Abstraction has 197 states and 237 transitions. [2021-10-13 08:13:44,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:44,412 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 237 transitions. [2021-10-13 08:13:44,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-13 08:13:44,413 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:13:44,413 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:13:44,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-10-13 08:13:44,414 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 49 more)] === [2021-10-13 08:13:44,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:13:44,414 INFO L82 PathProgramCache]: Analyzing trace with hash 101877003, now seen corresponding path program 1 times [2021-10-13 08:13:44,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:13:44,414 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101278307] [2021-10-13 08:13:44,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:13:44,415 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:13:44,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:13:44,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:13:44,471 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:13:44,471 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101278307] [2021-10-13 08:13:44,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101278307] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:13:44,472 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:13:44,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 08:13:44,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714413261] [2021-10-13 08:13:44,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 08:13:44,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:13:44,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 08:13:44,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 08:13:44,474 INFO L87 Difference]: Start difference. First operand 197 states and 237 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:44,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:13:44,582 INFO L93 Difference]: Finished difference Result 234 states and 285 transitions. [2021-10-13 08:13:44,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 08:13:44,582 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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 28 [2021-10-13 08:13:44,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:13:44,584 INFO L225 Difference]: With dead ends: 234 [2021-10-13 08:13:44,584 INFO L226 Difference]: Without dead ends: 234 [2021-10-13 08:13:44,586 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.2ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 08:13:44,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2021-10-13 08:13:44,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 178. [2021-10-13 08:13:44,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 173 states have (on average 1.254335260115607) internal successors, (217), 177 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:44,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 217 transitions. [2021-10-13 08:13:44,593 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 217 transitions. Word has length 28 [2021-10-13 08:13:44,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:13:44,593 INFO L470 AbstractCegarLoop]: Abstraction has 178 states and 217 transitions. [2021-10-13 08:13:44,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:44,593 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 217 transitions. [2021-10-13 08:13:44,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-13 08:13:44,594 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:13:44,594 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:13:44,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-10-13 08:13:44,595 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 49 more)] === [2021-10-13 08:13:44,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:13:44,595 INFO L82 PathProgramCache]: Analyzing trace with hash 1362411376, now seen corresponding path program 1 times [2021-10-13 08:13:44,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:13:44,595 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107320128] [2021-10-13 08:13:44,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:13:44,596 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:13:44,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:13:44,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:13:44,704 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:13:44,704 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107320128] [2021-10-13 08:13:44,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107320128] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:13:44,704 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:13:44,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 08:13:44,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728552449] [2021-10-13 08:13:44,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 08:13:44,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:13:44,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 08:13:44,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 08:13:44,706 INFO L87 Difference]: Start difference. First operand 178 states and 217 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:44,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:13:44,897 INFO L93 Difference]: Finished difference Result 227 states and 277 transitions. [2021-10-13 08:13:44,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 08:13:44,897 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 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 37 [2021-10-13 08:13:44,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:13:44,899 INFO L225 Difference]: With dead ends: 227 [2021-10-13 08:13:44,899 INFO L226 Difference]: Without dead ends: 227 [2021-10-13 08:13:44,901 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.0ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-10-13 08:13:44,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2021-10-13 08:13:44,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 168. [2021-10-13 08:13:44,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 164 states have (on average 1.2439024390243902) internal successors, (204), 167 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:44,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 204 transitions. [2021-10-13 08:13:44,907 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 204 transitions. Word has length 37 [2021-10-13 08:13:44,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:13:44,907 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 204 transitions. [2021-10-13 08:13:44,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:44,907 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 204 transitions. [2021-10-13 08:13:44,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 08:13:44,908 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:13:44,908 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:13:44,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-10-13 08:13:44,909 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 49 more)] === [2021-10-13 08:13:44,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:13:44,909 INFO L82 PathProgramCache]: Analyzing trace with hash -2027588443, now seen corresponding path program 1 times [2021-10-13 08:13:44,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:13:44,910 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508793478] [2021-10-13 08:13:44,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:13:44,910 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:13:44,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:13:45,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:13:45,045 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:13:45,046 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508793478] [2021-10-13 08:13:45,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508793478] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:13:45,046 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:13:45,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-13 08:13:45,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820493680] [2021-10-13 08:13:45,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 08:13:45,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:13:45,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 08:13:45,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-10-13 08:13:45,048 INFO L87 Difference]: Start difference. First operand 168 states and 204 transitions. Second operand has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:45,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:13:45,274 INFO L93 Difference]: Finished difference Result 305 states and 369 transitions. [2021-10-13 08:13:45,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 08:13:45,274 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 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 38 [2021-10-13 08:13:45,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:13:45,277 INFO L225 Difference]: With dead ends: 305 [2021-10-13 08:13:45,277 INFO L226 Difference]: Without dead ends: 289 [2021-10-13 08:13:45,277 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 177.2ms TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-10-13 08:13:45,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2021-10-13 08:13:45,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 168. [2021-10-13 08:13:45,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 164 states have (on average 1.2378048780487805) internal successors, (203), 167 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:45,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 203 transitions. [2021-10-13 08:13:45,283 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 203 transitions. Word has length 38 [2021-10-13 08:13:45,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:13:45,284 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 203 transitions. [2021-10-13 08:13:45,311 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:45,311 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 203 transitions. [2021-10-13 08:13:45,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-10-13 08:13:45,312 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:13:45,312 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:13:45,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-10-13 08:13:45,313 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 49 more)] === [2021-10-13 08:13:45,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:13:45,314 INFO L82 PathProgramCache]: Analyzing trace with hash -1509921306, now seen corresponding path program 1 times [2021-10-13 08:13:45,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:13:45,314 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245735651] [2021-10-13 08:13:45,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:13:45,315 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:13:45,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:13:45,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:13:45,395 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:13:45,396 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245735651] [2021-10-13 08:13:45,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245735651] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:13:45,396 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:13:45,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-13 08:13:45,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308688119] [2021-10-13 08:13:45,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 08:13:45,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:13:45,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 08:13:45,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-10-13 08:13:45,398 INFO L87 Difference]: Start difference. First operand 168 states and 203 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:45,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:13:45,545 INFO L93 Difference]: Finished difference Result 287 states and 351 transitions. [2021-10-13 08:13:45,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 08:13:45,546 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 8 states have internal predecessors, (39), 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 39 [2021-10-13 08:13:45,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:13:45,548 INFO L225 Difference]: With dead ends: 287 [2021-10-13 08:13:45,549 INFO L226 Difference]: Without dead ends: 262 [2021-10-13 08:13:45,549 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 92.0ms TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-10-13 08:13:45,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-10-13 08:13:45,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 256. [2021-10-13 08:13:45,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 252 states have (on average 1.2301587301587302) internal successors, (310), 255 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:45,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 310 transitions. [2021-10-13 08:13:45,557 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 310 transitions. Word has length 39 [2021-10-13 08:13:45,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:13:45,557 INFO L470 AbstractCegarLoop]: Abstraction has 256 states and 310 transitions. [2021-10-13 08:13:45,558 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:45,558 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 310 transitions. [2021-10-13 08:13:45,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-13 08:13:45,559 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:13:45,559 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:13:45,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-10-13 08:13:45,560 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 49 more)] === [2021-10-13 08:13:45,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:13:45,560 INFO L82 PathProgramCache]: Analyzing trace with hash -1106424513, now seen corresponding path program 1 times [2021-10-13 08:13:45,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:13:45,561 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235897155] [2021-10-13 08:13:45,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:13:45,561 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:13:45,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:13:45,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:13:45,614 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:13:45,614 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235897155] [2021-10-13 08:13:45,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235897155] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:13:45,615 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:13:45,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 08:13:45,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616902423] [2021-10-13 08:13:45,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 08:13:45,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:13:45,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 08:13:45,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-13 08:13:45,617 INFO L87 Difference]: Start difference. First operand 256 states and 310 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:45,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:13:45,675 INFO L93 Difference]: Finished difference Result 353 states and 418 transitions. [2021-10-13 08:13:45,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 08:13:45,676 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 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 41 [2021-10-13 08:13:45,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:13:45,679 INFO L225 Difference]: With dead ends: 353 [2021-10-13 08:13:45,679 INFO L226 Difference]: Without dead ends: 353 [2021-10-13 08:13:45,679 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 10.5ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-13 08:13:45,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2021-10-13 08:13:45,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 256. [2021-10-13 08:13:45,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 252 states have (on average 1.2222222222222223) internal successors, (308), 255 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:45,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 308 transitions. [2021-10-13 08:13:45,688 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 308 transitions. Word has length 41 [2021-10-13 08:13:45,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:13:45,689 INFO L470 AbstractCegarLoop]: Abstraction has 256 states and 308 transitions. [2021-10-13 08:13:45,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:45,689 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 308 transitions. [2021-10-13 08:13:45,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-13 08:13:45,690 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:13:45,690 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:13:45,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-10-13 08:13:45,691 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 49 more)] === [2021-10-13 08:13:45,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:13:45,692 INFO L82 PathProgramCache]: Analyzing trace with hash 1174481534, now seen corresponding path program 1 times [2021-10-13 08:13:45,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:13:45,692 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280566959] [2021-10-13 08:13:45,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:13:45,693 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:13:45,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:13:45,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:13:45,796 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:13:45,796 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280566959] [2021-10-13 08:13:45,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280566959] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:13:45,797 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:13:45,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-13 08:13:45,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212764789] [2021-10-13 08:13:45,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 08:13:45,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:13:45,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 08:13:45,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-10-13 08:13:45,799 INFO L87 Difference]: Start difference. First operand 256 states and 308 transitions. Second operand has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:45,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:13:45,977 INFO L93 Difference]: Finished difference Result 275 states and 323 transitions. [2021-10-13 08:13:45,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 08:13:45,978 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 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 41 [2021-10-13 08:13:45,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:13:45,980 INFO L225 Difference]: With dead ends: 275 [2021-10-13 08:13:45,980 INFO L226 Difference]: Without dead ends: 240 [2021-10-13 08:13:45,983 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 131.7ms TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-10-13 08:13:45,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2021-10-13 08:13:45,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 234. [2021-10-13 08:13:45,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 230 states have (on average 1.2347826086956522) internal successors, (284), 233 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:45,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 284 transitions. [2021-10-13 08:13:45,991 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 284 transitions. Word has length 41 [2021-10-13 08:13:45,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:13:45,991 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 284 transitions. [2021-10-13 08:13:45,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:45,992 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 284 transitions. [2021-10-13 08:13:45,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-10-13 08:13:45,993 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:13:45,993 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:13:45,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-10-13 08:13:45,995 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 49 more)] === [2021-10-13 08:13:45,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:13:45,996 INFO L82 PathProgramCache]: Analyzing trace with hash 1266162763, now seen corresponding path program 1 times [2021-10-13 08:13:45,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:13:45,996 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767593256] [2021-10-13 08:13:45,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:13:45,997 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:13:46,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:13:46,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:13:46,138 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:13:46,139 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767593256] [2021-10-13 08:13:46,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767593256] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:13:46,139 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:13:46,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-13 08:13:46,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698914749] [2021-10-13 08:13:46,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 08:13:46,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:13:46,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 08:13:46,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-10-13 08:13:46,143 INFO L87 Difference]: Start difference. First operand 234 states and 284 transitions. Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:46,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:13:46,285 INFO L93 Difference]: Finished difference Result 238 states and 285 transitions. [2021-10-13 08:13:46,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 08:13:46,285 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 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 42 [2021-10-13 08:13:46,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:13:46,287 INFO L225 Difference]: With dead ends: 238 [2021-10-13 08:13:46,288 INFO L226 Difference]: Without dead ends: 213 [2021-10-13 08:13:46,288 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 119.1ms TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2021-10-13 08:13:46,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2021-10-13 08:13:46,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 119. [2021-10-13 08:13:46,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 116 states have (on average 1.1810344827586208) internal successors, (137), 118 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:46,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 137 transitions. [2021-10-13 08:13:46,293 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 137 transitions. Word has length 42 [2021-10-13 08:13:46,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:13:46,293 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 137 transitions. [2021-10-13 08:13:46,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:46,294 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 137 transitions. [2021-10-13 08:13:46,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-10-13 08:13:46,295 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:13:46,295 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2021-10-13 08:13:46,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-10-13 08:13:46,295 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 49 more)] === [2021-10-13 08:13:46,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:13:46,296 INFO L82 PathProgramCache]: Analyzing trace with hash -626528115, now seen corresponding path program 1 times [2021-10-13 08:13:46,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:13:46,297 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60576225] [2021-10-13 08:13:46,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:13:46,297 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:13:46,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:13:46,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:13:46,386 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:13:46,386 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60576225] [2021-10-13 08:13:46,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60576225] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:13:46,387 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:13:46,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 08:13:46,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443645308] [2021-10-13 08:13:46,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 08:13:46,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:13:46,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 08:13:46,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 08:13:46,389 INFO L87 Difference]: Start difference. First operand 119 states and 137 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:46,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:13:46,533 INFO L93 Difference]: Finished difference Result 168 states and 188 transitions. [2021-10-13 08:13:46,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 08:13:46,533 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-10-13 08:13:46,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:13:46,535 INFO L225 Difference]: With dead ends: 168 [2021-10-13 08:13:46,535 INFO L226 Difference]: Without dead ends: 166 [2021-10-13 08:13:46,535 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.9ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-10-13 08:13:46,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-10-13 08:13:46,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 108. [2021-10-13 08:13:46,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 106 states have (on average 1.1603773584905661) internal successors, (123), 107 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:46,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 123 transitions. [2021-10-13 08:13:46,540 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 123 transitions. Word has length 51 [2021-10-13 08:13:46,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:13:46,540 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 123 transitions. [2021-10-13 08:13:46,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:46,540 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 123 transitions. [2021-10-13 08:13:46,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-10-13 08:13:46,541 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:13:46,542 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:13:46,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-10-13 08:13:46,542 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 49 more)] === [2021-10-13 08:13:46,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:13:46,543 INFO L82 PathProgramCache]: Analyzing trace with hash 210630491, now seen corresponding path program 1 times [2021-10-13 08:13:46,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:13:46,543 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74826513] [2021-10-13 08:13:46,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:13:46,544 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:13:46,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:13:46,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:13:46,642 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:13:46,642 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74826513] [2021-10-13 08:13:46,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74826513] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:13:46,643 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:13:46,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 08:13:46,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331123929] [2021-10-13 08:13:46,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 08:13:46,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:13:46,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 08:13:46,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 08:13:46,645 INFO L87 Difference]: Start difference. First operand 108 states and 123 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:46,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:13:46,846 INFO L93 Difference]: Finished difference Result 164 states and 180 transitions. [2021-10-13 08:13:46,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 08:13:46,846 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-10-13 08:13:46,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:13:46,848 INFO L225 Difference]: With dead ends: 164 [2021-10-13 08:13:46,848 INFO L226 Difference]: Without dead ends: 160 [2021-10-13 08:13:46,848 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.7ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-10-13 08:13:46,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-10-13 08:13:46,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 108. [2021-10-13 08:13:46,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 106 states have (on average 1.1415094339622642) internal successors, (121), 107 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:46,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 121 transitions. [2021-10-13 08:13:46,853 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 121 transitions. Word has length 63 [2021-10-13 08:13:46,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:13:46,853 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 121 transitions. [2021-10-13 08:13:46,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:46,854 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 121 transitions. [2021-10-13 08:13:46,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-10-13 08:13:46,855 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:13:46,855 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:13:46,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-10-13 08:13:46,855 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 49 more)] === [2021-10-13 08:13:46,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:13:46,856 INFO L82 PathProgramCache]: Analyzing trace with hash -979724378, now seen corresponding path program 1 times [2021-10-13 08:13:46,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:13:46,856 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277488189] [2021-10-13 08:13:46,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:13:46,857 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:13:46,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:13:46,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:13:46,984 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:13:46,984 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277488189] [2021-10-13 08:13:46,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277488189] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:13:46,987 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:13:46,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 08:13:46,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969773609] [2021-10-13 08:13:46,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 08:13:46,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:13:46,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 08:13:46,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 08:13:46,990 INFO L87 Difference]: Start difference. First operand 108 states and 121 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:47,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:13:47,147 INFO L93 Difference]: Finished difference Result 150 states and 163 transitions. [2021-10-13 08:13:47,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 08:13:47,148 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-10-13 08:13:47,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:13:47,150 INFO L225 Difference]: With dead ends: 150 [2021-10-13 08:13:47,150 INFO L226 Difference]: Without dead ends: 148 [2021-10-13 08:13:47,151 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 34.7ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-10-13 08:13:47,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-10-13 08:13:47,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 99. [2021-10-13 08:13:47,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 98 states have (on average 1.1326530612244898) internal successors, (111), 98 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:47,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 111 transitions. [2021-10-13 08:13:47,156 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 111 transitions. Word has length 64 [2021-10-13 08:13:47,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:13:47,156 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 111 transitions. [2021-10-13 08:13:47,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:47,157 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 111 transitions. [2021-10-13 08:13:47,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-10-13 08:13:47,163 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:13:47,163 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:13:47,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-10-13 08:13:47,163 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 49 more)] === [2021-10-13 08:13:47,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:13:47,164 INFO L82 PathProgramCache]: Analyzing trace with hash 456981697, now seen corresponding path program 1 times [2021-10-13 08:13:47,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:13:47,165 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618187733] [2021-10-13 08:13:47,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:13:47,165 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:13:47,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:13:47,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:13:47,278 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:13:47,278 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618187733] [2021-10-13 08:13:47,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618187733] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:13:47,278 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:13:47,278 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 08:13:47,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052739951] [2021-10-13 08:13:47,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 08:13:47,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:13:47,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 08:13:47,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 08:13:47,280 INFO L87 Difference]: Start difference. First operand 99 states and 111 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:47,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:13:47,418 INFO L93 Difference]: Finished difference Result 132 states and 145 transitions. [2021-10-13 08:13:47,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 08:13:47,419 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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 65 [2021-10-13 08:13:47,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:13:47,419 INFO L225 Difference]: With dead ends: 132 [2021-10-13 08:13:47,419 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 08:13:47,420 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 27.2ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-10-13 08:13:47,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 08:13:47,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 08:13:47,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:47,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 08:13:47,421 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 65 [2021-10-13 08:13:47,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:13:47,421 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 08:13:47,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:13:47,422 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 08:13:47,422 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 08:13:47,425 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 08:13:47,426 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 08:13:47,426 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 08:13:47,426 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 08:13:47,427 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 08:13:47,427 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 08:13:47,427 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 08:13:47,427 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 08:13:47,428 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 08:13:47,428 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 08:13:47,428 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 08:13:47,428 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 08:13:47,429 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 08:13:47,429 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 08:13:47,429 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 08:13:47,429 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 08:13:47,430 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 08:13:47,431 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 08:13:47,431 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 08:13:47,431 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 08:13:47,432 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 08:13:47,432 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 08:13:47,432 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 08:13:47,432 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 08:13:47,433 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 08:13:47,433 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 08:13:47,434 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 08:13:47,434 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 08:13:47,434 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 08:13:47,434 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 08:13:47,434 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 08:13:47,435 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 08:13:47,435 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 08:13:47,435 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 08:13:47,435 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 08:13:47,436 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 08:13:47,436 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 08:13:47,436 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 08:13:47,436 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 08:13:47,437 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 08:13:47,437 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 08:13:47,437 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 08:13:47,437 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 08:13:47,438 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 08:13:47,438 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 08:13:47,438 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 08:13:47,438 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 08:13:47,439 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr47ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 08:13:47,439 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr48ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 08:13:47,439 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 08:13:47,439 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr50ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 08:13:47,440 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 08:13:47,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-10-13 08:13:47,446 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 08:13:47,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 08:13:47 BoogieIcfgContainer [2021-10-13 08:13:47,452 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 08:13:47,453 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 08:13:47,453 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 08:13:47,453 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 08:13:47,454 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:13:36" (3/4) ... [2021-10-13 08:13:47,458 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 08:13:47,521 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 282 nodes and edges [2021-10-13 08:13:47,528 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 86 nodes and edges [2021-10-13 08:13:47,535 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-10-13 08:13:47,542 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-10-13 08:13:47,859 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ead52b9c-d432-4082-869d-693544504a31/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 08:13:47,860 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 08:13:47,862 INFO L168 Benchmark]: Toolchain (without parser) took 15512.59 ms. Allocated memory was 100.7 MB in the beginning and 264.2 MB in the end (delta: 163.6 MB). Free memory was 67.5 MB in the beginning and 120.3 MB in the end (delta: -52.8 MB). Peak memory consumption was 109.5 MB. Max. memory is 16.1 GB. [2021-10-13 08:13:47,862 INFO L168 Benchmark]: CDTParser took 0.40 ms. Allocated memory is still 100.7 MB. Free memory is still 56.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 08:13:47,863 INFO L168 Benchmark]: CACSL2BoogieTranslator took 775.36 ms. Allocated memory is still 100.7 MB. Free memory was 67.3 MB in the beginning and 67.0 MB in the end (delta: 277.9 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 08:13:47,864 INFO L168 Benchmark]: Boogie Procedure Inliner took 188.02 ms. Allocated memory is still 100.7 MB. Free memory was 67.0 MB in the beginning and 55.8 MB in the end (delta: 11.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 08:13:47,864 INFO L168 Benchmark]: Boogie Preprocessor took 226.39 ms. Allocated memory is still 100.7 MB. Free memory was 55.8 MB in the beginning and 49.2 MB in the end (delta: 6.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-13 08:13:47,865 INFO L168 Benchmark]: RCFGBuilder took 3320.78 ms. Allocated memory was 100.7 MB in the beginning and 176.2 MB in the end (delta: 75.5 MB). Free memory was 48.9 MB in the beginning and 66.6 MB in the end (delta: -17.8 MB). Peak memory consumption was 59.5 MB. Max. memory is 16.1 GB. [2021-10-13 08:13:47,866 INFO L168 Benchmark]: TraceAbstraction took 10584.82 ms. Allocated memory was 176.2 MB in the beginning and 264.2 MB in the end (delta: 88.1 MB). Free memory was 66.6 MB in the beginning and 168.0 MB in the end (delta: -101.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 08:13:47,867 INFO L168 Benchmark]: Witness Printer took 407.29 ms. Allocated memory is still 264.2 MB. Free memory was 168.0 MB in the beginning and 120.3 MB in the end (delta: 47.7 MB). Peak memory consumption was 46.1 MB. Max. memory is 16.1 GB. [2021-10-13 08:13:47,870 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40 ms. Allocated memory is still 100.7 MB. Free memory is still 56.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 775.36 ms. Allocated memory is still 100.7 MB. Free memory was 67.3 MB in the beginning and 67.0 MB in the end (delta: 277.9 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 188.02 ms. Allocated memory is still 100.7 MB. Free memory was 67.0 MB in the beginning and 55.8 MB in the end (delta: 11.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 226.39 ms. Allocated memory is still 100.7 MB. Free memory was 55.8 MB in the beginning and 49.2 MB in the end (delta: 6.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * RCFGBuilder took 3320.78 ms. Allocated memory was 100.7 MB in the beginning and 176.2 MB in the end (delta: 75.5 MB). Free memory was 48.9 MB in the beginning and 66.6 MB in the end (delta: -17.8 MB). Peak memory consumption was 59.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 10584.82 ms. Allocated memory was 176.2 MB in the beginning and 264.2 MB in the end (delta: 88.1 MB). Free memory was 66.6 MB in the beginning and 168.0 MB in the end (delta: -101.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 407.29 ms. Allocated memory is still 264.2 MB. Free memory was 168.0 MB in the beginning and 120.3 MB in the end (delta: 47.7 MB). Peak memory consumption was 46.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 56]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 56]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 56]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 56]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 56]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 56]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 56]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 56]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 56]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 56]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 56]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 56]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 56]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 56]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 56]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 56]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 56]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 56]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 56]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 56]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 56]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 56]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 56]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 56]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 56]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 56]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 56]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 56]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 56]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 56]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 56]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 56]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 56]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 56]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 56]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 56]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 56]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 56]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 56]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 56]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 56]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 56]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 56]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 56]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 56]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 56]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 56]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 56]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 56]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 56]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 56]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 647]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 365 locations, 52 error locations. Started 1 CEGAR loops. OverallTime: 10455.2ms, OverallIterations: 42, TraceHistogramMax: 1, EmptinessCheckTime: 69.5ms, AutomataDifference: 5987.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 34.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 12138 SDtfs, 10247 SDslu, 13749 SDs, 0 SdLazy, 3891 SolverSat, 574 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3445.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 217 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1040.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=732occurred in iteration=8, InterpolantAutomatonStates: 189, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 715.6ms AutomataMinimizationTime, 42 MinimizatonAttempts, 2528 StatesRemovedByMinimization, 28 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 146.3ms SsaConstructionTime, 735.1ms SatisfiabilityAnalysisTime, 2124.8ms InterpolantComputationTime, 1095 NumberOfCodeBlocks, 1095 NumberOfCodeBlocksAsserted, 42 NumberOfCheckSat, 1053 ConstructedInterpolants, 0 QuantifiedInterpolants, 3015 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 42 InterpolantComputations, 42 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 52 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-13 08:13:47,948 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ead52b9c-d432-4082-869d-693544504a31/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...