./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ntdrivers-simplified/floppy_simpl4.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab285d30-b7bd-40e2-8bbe-197cb190c154/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab285d30-b7bd-40e2-8bbe-197cb190c154/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab285d30-b7bd-40e2-8bbe-197cb190c154/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab285d30-b7bd-40e2-8bbe-197cb190c154/bin/utaipan-SDwSMHVbGG/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ntdrivers-simplified/floppy_simpl4.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab285d30-b7bd-40e2-8bbe-197cb190c154/bin/utaipan-SDwSMHVbGG/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab285d30-b7bd-40e2-8bbe-197cb190c154/bin/utaipan-SDwSMHVbGG --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 b15a3429ae983cb571408e453cffd56861eca4f5fc7e760aad97ad24a44474ad ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 06:01:24,568 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 06:01:24,571 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 06:01:24,633 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 06:01:24,634 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 06:01:24,639 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 06:01:24,641 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 06:01:24,645 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 06:01:24,648 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 06:01:24,654 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 06:01:24,655 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 06:01:24,657 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 06:01:24,657 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 06:01:24,660 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 06:01:24,662 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 06:01:24,667 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 06:01:24,669 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 06:01:24,670 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 06:01:24,673 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 06:01:24,684 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 06:01:24,686 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 06:01:24,687 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 06:01:24,692 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 06:01:24,693 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 06:01:24,703 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 06:01:24,703 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 06:01:24,704 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 06:01:24,706 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 06:01:24,707 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 06:01:24,709 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 06:01:24,709 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 06:01:24,710 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 06:01:24,712 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 06:01:24,714 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 06:01:24,715 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 06:01:24,715 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 06:01:24,716 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 06:01:24,717 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 06:01:24,717 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 06:01:24,718 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 06:01:24,719 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 06:01:24,719 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab285d30-b7bd-40e2-8bbe-197cb190c154/bin/utaipan-SDwSMHVbGG/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-10-29 06:01:24,764 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 06:01:24,764 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 06:01:24,766 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 06:01:24,766 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 06:01:24,766 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 06:01:24,767 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 06:01:24,767 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-29 06:01:24,767 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 06:01:24,767 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 06:01:24,768 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-29 06:01:24,769 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-29 06:01:24,769 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 06:01:24,769 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-29 06:01:24,770 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-29 06:01:24,770 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-29 06:01:24,771 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-29 06:01:24,771 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-29 06:01:24,771 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 06:01:24,771 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 06:01:24,772 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-29 06:01:24,772 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 06:01:24,772 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 06:01:24,772 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 06:01:24,773 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-29 06:01:24,773 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-29 06:01:24,773 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-29 06:01:24,775 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 06:01:24,775 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 06:01:24,775 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 06:01:24,776 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 06:01:24,776 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 06:01:24,776 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 06:01:24,777 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 06:01:24,777 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 06:01:24,777 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 06:01:24,777 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-29 06:01:24,778 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 06:01:24,778 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 06:01:24,778 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 06:01:24,778 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_ab285d30-b7bd-40e2-8bbe-197cb190c154/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab285d30-b7bd-40e2-8bbe-197cb190c154/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b15a3429ae983cb571408e453cffd56861eca4f5fc7e760aad97ad24a44474ad [2021-10-29 06:01:25,110 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 06:01:25,137 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 06:01:25,140 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 06:01:25,142 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 06:01:25,142 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 06:01:25,143 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab285d30-b7bd-40e2-8bbe-197cb190c154/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/ntdrivers-simplified/floppy_simpl4.cil-2.c [2021-10-29 06:01:25,232 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab285d30-b7bd-40e2-8bbe-197cb190c154/bin/utaipan-SDwSMHVbGG/data/3c6566486/e1de2a1aec8a4241b75ca0a2d2486074/FLAGde8ea6354 [2021-10-29 06:01:25,915 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 06:01:25,916 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab285d30-b7bd-40e2-8bbe-197cb190c154/sv-benchmarks/c/ntdrivers-simplified/floppy_simpl4.cil-2.c [2021-10-29 06:01:25,937 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab285d30-b7bd-40e2-8bbe-197cb190c154/bin/utaipan-SDwSMHVbGG/data/3c6566486/e1de2a1aec8a4241b75ca0a2d2486074/FLAGde8ea6354 [2021-10-29 06:01:26,175 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab285d30-b7bd-40e2-8bbe-197cb190c154/bin/utaipan-SDwSMHVbGG/data/3c6566486/e1de2a1aec8a4241b75ca0a2d2486074 [2021-10-29 06:01:26,178 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 06:01:26,180 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 06:01:26,182 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 06:01:26,183 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 06:01:26,186 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 06:01:26,187 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 06:01:26" (1/1) ... [2021-10-29 06:01:26,189 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@124c4756 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:01:26, skipping insertion in model container [2021-10-29 06:01:26,194 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 06:01:26" (1/1) ... [2021-10-29 06:01:26,203 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 06:01:26,296 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 06:01:26,720 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_ab285d30-b7bd-40e2-8bbe-197cb190c154/sv-benchmarks/c/ntdrivers-simplified/floppy_simpl4.cil-2.c[48585,48598] [2021-10-29 06:01:26,726 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 06:01:26,743 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 06:01:26,864 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_ab285d30-b7bd-40e2-8bbe-197cb190c154/sv-benchmarks/c/ntdrivers-simplified/floppy_simpl4.cil-2.c[48585,48598] [2021-10-29 06:01:26,865 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 06:01:26,888 INFO L208 MainTranslator]: Completed translation [2021-10-29 06:01:26,888 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:01:26 WrapperNode [2021-10-29 06:01:26,888 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 06:01:26,889 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 06:01:26,889 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 06:01:26,889 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 06:01:26,901 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:01:26" (1/1) ... [2021-10-29 06:01:26,938 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:01:26" (1/1) ... [2021-10-29 06:01:27,093 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 06:01:27,094 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 06:01:27,095 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 06:01:27,095 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 06:01:27,105 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:01:26" (1/1) ... [2021-10-29 06:01:27,106 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:01:26" (1/1) ... [2021-10-29 06:01:27,123 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:01:26" (1/1) ... [2021-10-29 06:01:27,124 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:01:26" (1/1) ... [2021-10-29 06:01:27,175 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:01:26" (1/1) ... [2021-10-29 06:01:27,195 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:01:26" (1/1) ... [2021-10-29 06:01:27,202 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:01:26" (1/1) ... [2021-10-29 06:01:27,218 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 06:01:27,219 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 06:01:27,220 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 06:01:27,220 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 06:01:27,221 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:01:26" (1/1) ... [2021-10-29 06:01:27,229 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 06:01:27,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab285d30-b7bd-40e2-8bbe-197cb190c154/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 06:01:27,266 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab285d30-b7bd-40e2-8bbe-197cb190c154/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 06:01:27,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab285d30-b7bd-40e2-8bbe-197cb190c154/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 06:01:27,345 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 06:01:27,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-29 06:01:27,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 06:01:27,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 06:01:27,714 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-29 06:01:27,744 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-29 06:01:27,749 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-29 06:01:27,804 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-29 06:01:27,806 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-29 06:01:27,808 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-29 06:01:27,817 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-29 06:01:27,840 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-29 06:01:27,853 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-29 06:01:27,857 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-29 06:01:27,858 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-29 06:01:27,860 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-29 06:01:27,863 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-29 06:01:27,866 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-29 06:01:27,875 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-29 06:01:27,875 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-29 06:01:27,884 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-29 06:01:27,891 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-29 06:01:27,896 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-29 06:01:27,897 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-29 06:01:27,900 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-29 06:01:27,903 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-29 06:01:27,908 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-29 06:01:27,912 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-29 06:01:27,915 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-29 06:01:27,918 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-29 06:01:27,921 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-29 06:01:27,923 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-29 06:01:27,923 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-29 06:01:27,925 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-29 06:01:29,245 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##658: assume !false; [2021-10-29 06:01:29,245 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##657: assume false; [2021-10-29 06:01:29,245 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##665: assume !false; [2021-10-29 06:01:29,246 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##664: assume false; [2021-10-29 06:01:29,246 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##683: assume false; [2021-10-29 06:01:29,246 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##684: assume !false; [2021-10-29 06:01:29,246 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##609: assume false; [2021-10-29 06:01:29,247 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##610: assume !false; [2021-10-29 06:01:29,247 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##639: assume false; [2021-10-29 06:01:29,247 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##640: assume !false; [2021-10-29 06:01:29,247 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##249: assume false; [2021-10-29 06:01:29,247 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##250: assume !false; [2021-10-29 06:01:29,247 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##279: assume false; [2021-10-29 06:01:29,248 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##280: assume !false; [2021-10-29 06:01:29,248 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##285: assume !false; [2021-10-29 06:01:29,248 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##284: assume false; [2021-10-29 06:01:29,249 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##229: assume !false; [2021-10-29 06:01:29,249 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##228: assume false; [2021-10-29 06:01:29,249 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##302: assume !false; [2021-10-29 06:01:29,250 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##301: assume false; [2021-10-29 06:01:29,250 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##369: assume !false; [2021-10-29 06:01:29,250 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##375: assume !false; [2021-10-29 06:01:29,250 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##374: assume false; [2021-10-29 06:01:29,251 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##331: assume false; [2021-10-29 06:01:29,251 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##332: assume !false; [2021-10-29 06:01:29,251 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##357: assume false; [2021-10-29 06:01:29,251 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##358: assume !false; [2021-10-29 06:01:29,251 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##368: assume false; [2021-10-29 06:01:29,252 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##404: assume !false; [2021-10-29 06:01:29,252 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##403: assume false; [2021-10-29 06:01:29,252 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##427: assume !false; [2021-10-29 06:01:29,252 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##426: assume false; [2021-10-29 06:01:29,252 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##436: assume !false; [2021-10-29 06:01:29,252 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##435: assume false; [2021-10-29 06:01:29,252 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##439: assume false; [2021-10-29 06:01:29,253 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##440: assume !false; [2021-10-29 06:01:29,253 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##463: assume false; [2021-10-29 06:01:29,253 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##464: assume !false; [2021-10-29 06:01:29,253 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##485: assume !false; [2021-10-29 06:01:29,253 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##484: assume false; [2021-10-29 06:01:29,253 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##524: assume !false; [2021-10-29 06:01:29,254 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##523: assume false; [2021-10-29 06:01:29,254 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##558: assume !false; [2021-10-29 06:01:29,254 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##557: assume false; [2021-10-29 06:01:29,254 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##187: assume !false; [2021-10-29 06:01:29,254 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##186: assume false; [2021-10-29 06:01:29,254 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##68: assume !false; [2021-10-29 06:01:29,254 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##67: assume false; [2021-10-29 06:01:29,255 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##144: assume false; [2021-10-29 06:01:29,255 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##145: assume !false; [2021-10-29 06:01:29,255 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume !false; [2021-10-29 06:01:29,255 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume false; [2021-10-29 06:01:29,256 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##154: assume !false; [2021-10-29 06:01:29,256 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##153: assume false; [2021-10-29 06:01:29,256 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##158: assume !false; [2021-10-29 06:01:29,256 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##157: assume false; [2021-10-29 06:01:29,257 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##588: assume !false; [2021-10-29 06:01:29,257 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##587: assume false; [2021-10-29 06:01:29,258 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##106: assume !false; [2021-10-29 06:01:29,258 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##105: assume false; [2021-10-29 06:01:30,498 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 06:01:30,498 INFO L299 CfgBuilder]: Removed 275 assume(true) statements. [2021-10-29 06:01:30,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 06:01:30 BoogieIcfgContainer [2021-10-29 06:01:30,504 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 06:01:30,507 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 06:01:30,507 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 06:01:30,511 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 06:01:30,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 06:01:26" (1/3) ... [2021-10-29 06:01:30,549 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@209c8a9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 06:01:30, skipping insertion in model container [2021-10-29 06:01:30,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:01:26" (2/3) ... [2021-10-29 06:01:30,550 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@209c8a9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 06:01:30, skipping insertion in model container [2021-10-29 06:01:30,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 06:01:30" (3/3) ... [2021-10-29 06:01:30,552 INFO L111 eAbstractionObserver]: Analyzing ICFG floppy_simpl4.cil-2.c [2021-10-29 06:01:30,558 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 06:01:30,559 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 54 error locations. [2021-10-29 06:01:30,622 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 06:01:30,633 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-29 06:01:30,634 INFO L340 AbstractCegarLoop]: Starting to check reachability of 54 error locations. [2021-10-29 06:01:30,677 INFO L276 IsEmpty]: Start isEmpty. Operand has 352 states, 297 states have (on average 1.7777777777777777) internal successors, (528), 351 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:30,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-29 06:01:30,685 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 06:01:30,685 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-29 06:01:30,686 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr53ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 51 more)] === [2021-10-29 06:01:30,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 06:01:30,693 INFO L85 PathProgramCache]: Analyzing trace with hash 67073714, now seen corresponding path program 1 times [2021-10-29 06:01:30,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 06:01:30,708 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287436485] [2021-10-29 06:01:30,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:01:30,716 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 06:01:30,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:01:30,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:01:30,942 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 06:01:30,942 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287436485] [2021-10-29 06:01:30,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287436485] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 06:01:30,943 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 06:01:30,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-29 06:01:30,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730998262] [2021-10-29 06:01:30,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 06:01:30,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 06:01:30,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 06:01:30,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 06:01:30,985 INFO L87 Difference]: Start difference. First operand has 352 states, 297 states have (on average 1.7777777777777777) internal successors, (528), 351 states have internal predecessors, (528), 0 states have call successors, (0), 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), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:31,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 06:01:31,074 INFO L93 Difference]: Finished difference Result 370 states and 500 transitions. [2021-10-29 06:01:31,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 06:01:31,076 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-29 06:01:31,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 06:01:31,091 INFO L225 Difference]: With dead ends: 370 [2021-10-29 06:01:31,091 INFO L226 Difference]: Without dead ends: 369 [2021-10-29 06:01:31,093 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 06:01:31,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2021-10-29 06:01:31,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 357. [2021-10-29 06:01:31,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 303 states have (on average 1.5907590759075907) internal successors, (482), 356 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:31,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 482 transitions. [2021-10-29 06:01:31,158 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 482 transitions. Word has length 4 [2021-10-29 06:01:31,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 06:01:31,158 INFO L470 AbstractCegarLoop]: Abstraction has 357 states and 482 transitions. [2021-10-29 06:01:31,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:31,159 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 482 transitions. [2021-10-29 06:01:31,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-29 06:01:31,159 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 06:01:31,159 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-29 06:01:31,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-29 06:01:31,160 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 51 more)] === [2021-10-29 06:01:31,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 06:01:31,161 INFO L85 PathProgramCache]: Analyzing trace with hash 33470565, now seen corresponding path program 1 times [2021-10-29 06:01:31,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 06:01:31,161 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656009279] [2021-10-29 06:01:31,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:01:31,161 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 06:01:31,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:01:31,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:01:31,218 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 06:01:31,218 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656009279] [2021-10-29 06:01:31,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656009279] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 06:01:31,219 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 06:01:31,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-29 06:01:31,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420576695] [2021-10-29 06:01:31,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 06:01:31,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 06:01:31,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 06:01:31,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 06:01:31,222 INFO L87 Difference]: Start difference. First operand 357 states and 482 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) [2021-10-29 06:01:31,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 06:01:31,485 INFO L93 Difference]: Finished difference Result 372 states and 513 transitions. [2021-10-29 06:01:31,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 06:01:31,486 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 [2021-10-29 06:01:31,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 06:01:31,494 INFO L225 Difference]: With dead ends: 372 [2021-10-29 06:01:31,494 INFO L226 Difference]: Without dead ends: 372 [2021-10-29 06:01:31,500 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 06:01:31,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2021-10-29 06:01:31,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 352. [2021-10-29 06:01:31,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 317 states have (on average 1.5331230283911672) internal successors, (486), 351 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:31,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 486 transitions. [2021-10-29 06:01:31,536 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 486 transitions. Word has length 6 [2021-10-29 06:01:31,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 06:01:31,536 INFO L470 AbstractCegarLoop]: Abstraction has 352 states and 486 transitions. [2021-10-29 06:01:31,536 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) [2021-10-29 06:01:31,537 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 486 transitions. [2021-10-29 06:01:31,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-29 06:01:31,537 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 06:01:31,537 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 06:01:31,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-29 06:01:31,538 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr53ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 51 more)] === [2021-10-29 06:01:31,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 06:01:31,539 INFO L85 PathProgramCache]: Analyzing trace with hash 93148654, now seen corresponding path program 1 times [2021-10-29 06:01:31,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 06:01:31,539 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068228987] [2021-10-29 06:01:31,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:01:31,540 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 06:01:31,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:01:31,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:01:31,595 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 06:01:31,597 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068228987] [2021-10-29 06:01:31,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068228987] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 06:01:31,599 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 06:01:31,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-29 06:01:31,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85566897] [2021-10-29 06:01:31,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 06:01:31,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 06:01:31,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 06:01:31,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 06:01:31,602 INFO L87 Difference]: Start difference. First operand 352 states and 486 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:31,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 06:01:31,609 INFO L93 Difference]: Finished difference Result 351 states and 485 transitions. [2021-10-29 06:01:31,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 06:01:31,610 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-29 06:01:31,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 06:01:31,613 INFO L225 Difference]: With dead ends: 351 [2021-10-29 06:01:31,613 INFO L226 Difference]: Without dead ends: 348 [2021-10-29 06:01:31,613 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 06:01:31,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2021-10-29 06:01:31,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 342. [2021-10-29 06:01:31,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 308 states have (on average 1.5032467532467533) internal successors, (463), 341 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:31,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 463 transitions. [2021-10-29 06:01:31,629 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 463 transitions. Word has length 8 [2021-10-29 06:01:31,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 06:01:31,629 INFO L470 AbstractCegarLoop]: Abstraction has 342 states and 463 transitions. [2021-10-29 06:01:31,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:31,630 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 463 transitions. [2021-10-29 06:01:31,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-29 06:01:31,631 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 06:01:31,631 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 06:01:31,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-29 06:01:31,632 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 51 more)] === [2021-10-29 06:01:31,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 06:01:31,632 INFO L85 PathProgramCache]: Analyzing trace with hash 964444336, now seen corresponding path program 1 times [2021-10-29 06:01:31,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 06:01:31,633 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510305021] [2021-10-29 06:01:31,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:01:31,633 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 06:01:31,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:01:31,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:01:31,752 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 06:01:31,752 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510305021] [2021-10-29 06:01:31,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510305021] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 06:01:31,758 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 06:01:31,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-29 06:01:31,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261060699] [2021-10-29 06:01:31,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 06:01:31,760 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 06:01:31,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 06:01:31,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 06:01:31,761 INFO L87 Difference]: Start difference. First operand 342 states and 463 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:31,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 06:01:31,805 INFO L93 Difference]: Finished difference Result 388 states and 519 transitions. [2021-10-29 06:01:31,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 06:01:31,810 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-29 06:01:31,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 06:01:31,813 INFO L225 Difference]: With dead ends: 388 [2021-10-29 06:01:31,813 INFO L226 Difference]: Without dead ends: 388 [2021-10-29 06:01:31,814 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 06:01:31,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2021-10-29 06:01:31,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 364. [2021-10-29 06:01:31,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 333 states have (on average 1.4924924924924925) internal successors, (497), 363 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:31,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 497 transitions. [2021-10-29 06:01:31,837 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 497 transitions. Word has length 11 [2021-10-29 06:01:31,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 06:01:31,837 INFO L470 AbstractCegarLoop]: Abstraction has 364 states and 497 transitions. [2021-10-29 06:01:31,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:31,838 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 497 transitions. [2021-10-29 06:01:31,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-29 06:01:31,839 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 06:01:31,840 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 06:01:31,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-29 06:01:31,840 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 51 more)] === [2021-10-29 06:01:31,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 06:01:31,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1957643340, now seen corresponding path program 1 times [2021-10-29 06:01:31,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 06:01:31,841 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142477941] [2021-10-29 06:01:31,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:01:31,842 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 06:01:31,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:01:31,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:01:31,972 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 06:01:31,972 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142477941] [2021-10-29 06:01:31,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142477941] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 06:01:31,973 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 06:01:31,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-29 06:01:31,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432757559] [2021-10-29 06:01:31,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 06:01:31,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 06:01:31,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 06:01:31,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 06:01:31,975 INFO L87 Difference]: Start difference. First operand 364 states and 497 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:32,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 06:01:32,025 INFO L93 Difference]: Finished difference Result 426 states and 567 transitions. [2021-10-29 06:01:32,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 06:01:32,025 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-29 06:01:32,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 06:01:32,029 INFO L225 Difference]: With dead ends: 426 [2021-10-29 06:01:32,029 INFO L226 Difference]: Without dead ends: 426 [2021-10-29 06:01:32,029 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 06:01:32,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2021-10-29 06:01:32,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 342. [2021-10-29 06:01:32,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 321 states have (on average 1.442367601246106) internal successors, (463), 341 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:32,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 463 transitions. [2021-10-29 06:01:32,045 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 463 transitions. Word has length 12 [2021-10-29 06:01:32,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 06:01:32,046 INFO L470 AbstractCegarLoop]: Abstraction has 342 states and 463 transitions. [2021-10-29 06:01:32,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:32,046 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 463 transitions. [2021-10-29 06:01:32,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-29 06:01:32,049 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 06:01:32,050 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 06:01:32,050 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-29 06:01:32,051 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr50ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 51 more)] === [2021-10-29 06:01:32,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 06:01:32,052 INFO L85 PathProgramCache]: Analyzing trace with hash 860073390, now seen corresponding path program 1 times [2021-10-29 06:01:32,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 06:01:32,052 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650373141] [2021-10-29 06:01:32,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:01:32,053 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 06:01:32,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:01:32,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:01:32,099 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 06:01:32,100 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650373141] [2021-10-29 06:01:32,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650373141] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 06:01:32,100 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 06:01:32,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-29 06:01:32,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531188666] [2021-10-29 06:01:32,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 06:01:32,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 06:01:32,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 06:01:32,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 06:01:32,103 INFO L87 Difference]: Start difference. First operand 342 states and 463 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:32,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 06:01:32,237 INFO L93 Difference]: Finished difference Result 361 states and 486 transitions. [2021-10-29 06:01:32,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 06:01:32,238 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-29 06:01:32,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 06:01:32,241 INFO L225 Difference]: With dead ends: 361 [2021-10-29 06:01:32,241 INFO L226 Difference]: Without dead ends: 361 [2021-10-29 06:01:32,242 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 06:01:32,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2021-10-29 06:01:32,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 361. [2021-10-29 06:01:32,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 340 states have (on average 1.4294117647058824) internal successors, (486), 360 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:32,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 486 transitions. [2021-10-29 06:01:32,255 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 486 transitions. Word has length 14 [2021-10-29 06:01:32,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 06:01:32,255 INFO L470 AbstractCegarLoop]: Abstraction has 361 states and 486 transitions. [2021-10-29 06:01:32,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:32,256 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 486 transitions. [2021-10-29 06:01:32,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-29 06:01:32,257 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 06:01:32,257 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 06:01:32,258 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-29 06:01:32,258 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 51 more)] === [2021-10-29 06:01:32,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 06:01:32,259 INFO L85 PathProgramCache]: Analyzing trace with hash 909927952, now seen corresponding path program 1 times [2021-10-29 06:01:32,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 06:01:32,260 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482774911] [2021-10-29 06:01:32,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:01:32,260 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 06:01:32,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:01:32,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:01:32,341 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 06:01:32,341 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482774911] [2021-10-29 06:01:32,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482774911] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 06:01:32,342 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 06:01:32,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-29 06:01:32,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698665356] [2021-10-29 06:01:32,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 06:01:32,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 06:01:32,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 06:01:32,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 06:01:32,344 INFO L87 Difference]: Start difference. First operand 361 states and 486 transitions. Second operand has 4 states, 4 states have (on average 3.75) 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) [2021-10-29 06:01:32,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 06:01:32,526 INFO L93 Difference]: Finished difference Result 361 states and 485 transitions. [2021-10-29 06:01:32,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 06:01:32,527 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) 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 [2021-10-29 06:01:32,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 06:01:32,530 INFO L225 Difference]: With dead ends: 361 [2021-10-29 06:01:32,530 INFO L226 Difference]: Without dead ends: 361 [2021-10-29 06:01:32,531 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-29 06:01:32,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2021-10-29 06:01:32,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 361. [2021-10-29 06:01:32,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 340 states have (on average 1.4264705882352942) internal successors, (485), 360 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:32,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 485 transitions. [2021-10-29 06:01:32,543 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 485 transitions. Word has length 15 [2021-10-29 06:01:32,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 06:01:32,544 INFO L470 AbstractCegarLoop]: Abstraction has 361 states and 485 transitions. [2021-10-29 06:01:32,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) 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) [2021-10-29 06:01:32,544 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 485 transitions. [2021-10-29 06:01:32,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-29 06:01:32,548 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 06:01:32,548 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 06:01:32,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-29 06:01:32,549 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 51 more)] === [2021-10-29 06:01:32,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 06:01:32,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1908694973, now seen corresponding path program 1 times [2021-10-29 06:01:32,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 06:01:32,550 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054052767] [2021-10-29 06:01:32,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:01:32,551 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 06:01:32,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:01:32,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:01:32,653 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 06:01:32,653 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054052767] [2021-10-29 06:01:32,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054052767] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 06:01:32,654 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 06:01:32,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-29 06:01:32,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330466174] [2021-10-29 06:01:32,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 06:01:32,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 06:01:32,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 06:01:32,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 06:01:32,657 INFO L87 Difference]: Start difference. First operand 361 states and 485 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) [2021-10-29 06:01:32,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 06:01:32,826 INFO L93 Difference]: Finished difference Result 361 states and 484 transitions. [2021-10-29 06:01:32,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 06:01:32,826 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 [2021-10-29 06:01:32,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 06:01:32,829 INFO L225 Difference]: With dead ends: 361 [2021-10-29 06:01:32,830 INFO L226 Difference]: Without dead ends: 361 [2021-10-29 06:01:32,830 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-29 06:01:32,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2021-10-29 06:01:32,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 361. [2021-10-29 06:01:32,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 340 states have (on average 1.423529411764706) internal successors, (484), 360 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:32,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 484 transitions. [2021-10-29 06:01:32,841 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 484 transitions. Word has length 16 [2021-10-29 06:01:32,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 06:01:32,841 INFO L470 AbstractCegarLoop]: Abstraction has 361 states and 484 transitions. [2021-10-29 06:01:32,841 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) [2021-10-29 06:01:32,841 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 484 transitions. [2021-10-29 06:01:32,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-29 06:01:32,842 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 06:01:32,842 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 06:01:32,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-29 06:01:32,843 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 51 more)] === [2021-10-29 06:01:32,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 06:01:32,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1320261401, now seen corresponding path program 1 times [2021-10-29 06:01:32,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 06:01:32,844 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954881001] [2021-10-29 06:01:32,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:01:32,844 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 06:01:32,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:01:32,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:01:32,876 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 06:01:32,876 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954881001] [2021-10-29 06:01:32,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954881001] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 06:01:32,876 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 06:01:32,877 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-29 06:01:32,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727787280] [2021-10-29 06:01:32,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 06:01:32,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 06:01:32,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 06:01:32,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 06:01:32,878 INFO L87 Difference]: Start difference. First operand 361 states and 484 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) 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) [2021-10-29 06:01:32,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 06:01:32,897 INFO L93 Difference]: Finished difference Result 371 states and 493 transitions. [2021-10-29 06:01:32,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 06:01:32,897 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) 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 [2021-10-29 06:01:32,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 06:01:32,900 INFO L225 Difference]: With dead ends: 371 [2021-10-29 06:01:32,900 INFO L226 Difference]: Without dead ends: 357 [2021-10-29 06:01:32,900 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 06:01:32,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2021-10-29 06:01:32,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 357. [2021-10-29 06:01:32,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 336 states have (on average 1.4226190476190477) internal successors, (478), 356 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:32,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 478 transitions. [2021-10-29 06:01:32,911 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 478 transitions. Word has length 17 [2021-10-29 06:01:32,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 06:01:32,911 INFO L470 AbstractCegarLoop]: Abstraction has 357 states and 478 transitions. [2021-10-29 06:01:32,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) 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) [2021-10-29 06:01:32,912 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 478 transitions. [2021-10-29 06:01:32,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-29 06:01:32,913 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 06:01:32,913 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 06:01:32,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-29 06:01:32,913 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 51 more)] === [2021-10-29 06:01:32,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 06:01:32,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1374368536, now seen corresponding path program 1 times [2021-10-29 06:01:32,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 06:01:32,914 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640018772] [2021-10-29 06:01:32,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:01:32,915 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 06:01:32,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:01:32,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:01:32,957 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 06:01:32,957 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640018772] [2021-10-29 06:01:32,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640018772] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 06:01:32,957 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 06:01:32,958 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-29 06:01:32,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758343918] [2021-10-29 06:01:32,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 06:01:32,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 06:01:32,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 06:01:32,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 06:01:32,959 INFO L87 Difference]: Start difference. First operand 357 states and 478 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) 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) [2021-10-29 06:01:33,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 06:01:33,090 INFO L93 Difference]: Finished difference Result 341 states and 461 transitions. [2021-10-29 06:01:33,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 06:01:33,091 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) 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 [2021-10-29 06:01:33,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 06:01:33,094 INFO L225 Difference]: With dead ends: 341 [2021-10-29 06:01:33,094 INFO L226 Difference]: Without dead ends: 341 [2021-10-29 06:01:33,094 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 06:01:33,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2021-10-29 06:01:33,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 341. [2021-10-29 06:01:33,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 328 states have (on average 1.4054878048780488) internal successors, (461), 340 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:33,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 461 transitions. [2021-10-29 06:01:33,121 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 461 transitions. Word has length 17 [2021-10-29 06:01:33,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 06:01:33,121 INFO L470 AbstractCegarLoop]: Abstraction has 341 states and 461 transitions. [2021-10-29 06:01:33,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) 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) [2021-10-29 06:01:33,122 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 461 transitions. [2021-10-29 06:01:33,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-29 06:01:33,123 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 06:01:33,123 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 06:01:33,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-29 06:01:33,124 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 51 more)] === [2021-10-29 06:01:33,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 06:01:33,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1023362569, now seen corresponding path program 1 times [2021-10-29 06:01:33,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 06:01:33,126 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174646620] [2021-10-29 06:01:33,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:01:33,126 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 06:01:33,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:01:33,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:01:33,185 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 06:01:33,185 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174646620] [2021-10-29 06:01:33,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174646620] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 06:01:33,185 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 06:01:33,186 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-29 06:01:33,186 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882609346] [2021-10-29 06:01:33,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 06:01:33,187 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 06:01:33,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 06:01:33,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 06:01:33,189 INFO L87 Difference]: Start difference. First operand 341 states and 461 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:33,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 06:01:33,223 INFO L93 Difference]: Finished difference Result 389 states and 504 transitions. [2021-10-29 06:01:33,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-29 06:01:33,223 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-29 06:01:33,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 06:01:33,226 INFO L225 Difference]: With dead ends: 389 [2021-10-29 06:01:33,226 INFO L226 Difference]: Without dead ends: 389 [2021-10-29 06:01:33,227 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-29 06:01:33,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2021-10-29 06:01:33,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 328. [2021-10-29 06:01:33,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 315 states have (on average 1.4) internal successors, (441), 327 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:33,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 441 transitions. [2021-10-29 06:01:33,238 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 441 transitions. Word has length 19 [2021-10-29 06:01:33,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 06:01:33,240 INFO L470 AbstractCegarLoop]: Abstraction has 328 states and 441 transitions. [2021-10-29 06:01:33,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:33,240 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 441 transitions. [2021-10-29 06:01:33,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-29 06:01:33,241 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 06:01:33,241 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 06:01:33,242 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-29 06:01:33,242 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 51 more)] === [2021-10-29 06:01:33,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 06:01:33,243 INFO L85 PathProgramCache]: Analyzing trace with hash 390825075, now seen corresponding path program 1 times [2021-10-29 06:01:33,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 06:01:33,244 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951728310] [2021-10-29 06:01:33,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:01:33,244 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 06:01:33,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:01:33,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:01:33,303 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 06:01:33,303 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951728310] [2021-10-29 06:01:33,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951728310] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 06:01:33,305 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 06:01:33,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-29 06:01:33,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138105353] [2021-10-29 06:01:33,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 06:01:33,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 06:01:33,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 06:01:33,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 06:01:33,310 INFO L87 Difference]: Start difference. First operand 328 states and 441 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) [2021-10-29 06:01:33,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 06:01:33,453 INFO L93 Difference]: Finished difference Result 325 states and 437 transitions. [2021-10-29 06:01:33,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 06:01:33,454 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 [2021-10-29 06:01:33,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 06:01:33,456 INFO L225 Difference]: With dead ends: 325 [2021-10-29 06:01:33,456 INFO L226 Difference]: Without dead ends: 325 [2021-10-29 06:01:33,457 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 06:01:33,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2021-10-29 06:01:33,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 325. [2021-10-29 06:01:33,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 314 states have (on average 1.39171974522293) internal successors, (437), 324 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:33,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 437 transitions. [2021-10-29 06:01:33,467 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 437 transitions. Word has length 20 [2021-10-29 06:01:33,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 06:01:33,467 INFO L470 AbstractCegarLoop]: Abstraction has 325 states and 437 transitions. [2021-10-29 06:01:33,467 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) [2021-10-29 06:01:33,467 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 437 transitions. [2021-10-29 06:01:33,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-29 06:01:33,468 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 06:01:33,469 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 06:01:33,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-29 06:01:33,469 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 51 more)] === [2021-10-29 06:01:33,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 06:01:33,470 INFO L85 PathProgramCache]: Analyzing trace with hash 523584526, now seen corresponding path program 1 times [2021-10-29 06:01:33,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 06:01:33,470 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635716572] [2021-10-29 06:01:33,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:01:33,470 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 06:01:33,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:01:33,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:01:33,517 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 06:01:33,517 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635716572] [2021-10-29 06:01:33,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635716572] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 06:01:33,518 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 06:01:33,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-29 06:01:33,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824425896] [2021-10-29 06:01:33,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 06:01:33,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 06:01:33,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 06:01:33,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 06:01:33,520 INFO L87 Difference]: Start difference. First operand 325 states and 437 transitions. Second operand has 3 states, 3 states have (on average 7.0) 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) [2021-10-29 06:01:33,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 06:01:33,545 INFO L93 Difference]: Finished difference Result 323 states and 423 transitions. [2021-10-29 06:01:33,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 06:01:33,546 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) 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 [2021-10-29 06:01:33,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 06:01:33,549 INFO L225 Difference]: With dead ends: 323 [2021-10-29 06:01:33,549 INFO L226 Difference]: Without dead ends: 323 [2021-10-29 06:01:33,549 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 06:01:33,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2021-10-29 06:01:33,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 309. [2021-10-29 06:01:33,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 298 states have (on average 1.3758389261744965) internal successors, (410), 308 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:33,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 410 transitions. [2021-10-29 06:01:33,559 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 410 transitions. Word has length 21 [2021-10-29 06:01:33,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 06:01:33,559 INFO L470 AbstractCegarLoop]: Abstraction has 309 states and 410 transitions. [2021-10-29 06:01:33,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) 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) [2021-10-29 06:01:33,560 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 410 transitions. [2021-10-29 06:01:33,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-29 06:01:33,561 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 06:01:33,561 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 06:01:33,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-29 06:01:33,562 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr50ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 51 more)] === [2021-10-29 06:01:33,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 06:01:33,562 INFO L85 PathProgramCache]: Analyzing trace with hash -351627672, now seen corresponding path program 1 times [2021-10-29 06:01:33,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 06:01:33,563 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976633089] [2021-10-29 06:01:33,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:01:33,563 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 06:01:33,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:01:33,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:01:33,609 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 06:01:33,609 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976633089] [2021-10-29 06:01:33,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976633089] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 06:01:33,609 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 06:01:33,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-29 06:01:33,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345184761] [2021-10-29 06:01:33,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 06:01:33,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 06:01:33,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 06:01:33,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 06:01:33,611 INFO L87 Difference]: Start difference. First operand 309 states and 410 transitions. Second operand has 3 states, 3 states have (on average 7.0) 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) [2021-10-29 06:01:33,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 06:01:33,629 INFO L93 Difference]: Finished difference Result 323 states and 419 transitions. [2021-10-29 06:01:33,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 06:01:33,629 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) 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 [2021-10-29 06:01:33,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 06:01:33,632 INFO L225 Difference]: With dead ends: 323 [2021-10-29 06:01:33,632 INFO L226 Difference]: Without dead ends: 295 [2021-10-29 06:01:33,632 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 06:01:33,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2021-10-29 06:01:33,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 293. [2021-10-29 06:01:33,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 282 states have (on average 1.3652482269503545) internal successors, (385), 292 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:33,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 385 transitions. [2021-10-29 06:01:33,641 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 385 transitions. Word has length 21 [2021-10-29 06:01:33,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 06:01:33,642 INFO L470 AbstractCegarLoop]: Abstraction has 293 states and 385 transitions. [2021-10-29 06:01:33,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) 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) [2021-10-29 06:01:33,642 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 385 transitions. [2021-10-29 06:01:33,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-29 06:01:33,643 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 06:01:33,643 INFO L513 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] [2021-10-29 06:01:33,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-10-29 06:01:33,644 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 51 more)] === [2021-10-29 06:01:33,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 06:01:33,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1665974079, now seen corresponding path program 1 times [2021-10-29 06:01:33,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 06:01:33,645 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919625305] [2021-10-29 06:01:33,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:01:33,645 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 06:01:33,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:01:33,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:01:33,680 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 06:01:33,680 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919625305] [2021-10-29 06:01:33,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919625305] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 06:01:33,681 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 06:01:33,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-29 06:01:33,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303031644] [2021-10-29 06:01:33,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 06:01:33,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 06:01:33,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 06:01:33,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 06:01:33,683 INFO L87 Difference]: Start difference. First operand 293 states and 385 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) [2021-10-29 06:01:33,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 06:01:33,828 INFO L93 Difference]: Finished difference Result 336 states and 440 transitions. [2021-10-29 06:01:33,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 06:01:33,828 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 [2021-10-29 06:01:33,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 06:01:33,832 INFO L225 Difference]: With dead ends: 336 [2021-10-29 06:01:33,832 INFO L226 Difference]: Without dead ends: 336 [2021-10-29 06:01:33,835 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 06:01:33,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2021-10-29 06:01:33,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 301. [2021-10-29 06:01:33,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 290 states have (on average 1.3689655172413793) internal successors, (397), 300 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:33,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 397 transitions. [2021-10-29 06:01:33,846 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 397 transitions. Word has length 22 [2021-10-29 06:01:33,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 06:01:33,846 INFO L470 AbstractCegarLoop]: Abstraction has 301 states and 397 transitions. [2021-10-29 06:01:33,847 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) [2021-10-29 06:01:33,847 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 397 transitions. [2021-10-29 06:01:33,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-29 06:01:33,848 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 06:01:33,848 INFO L513 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] [2021-10-29 06:01:33,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-10-29 06:01:33,849 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 51 more)] === [2021-10-29 06:01:33,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 06:01:33,849 INFO L85 PathProgramCache]: Analyzing trace with hash -895029968, now seen corresponding path program 1 times [2021-10-29 06:01:33,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 06:01:33,850 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044042598] [2021-10-29 06:01:33,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:01:33,850 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 06:01:33,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:01:33,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:01:33,894 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 06:01:33,894 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044042598] [2021-10-29 06:01:33,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044042598] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 06:01:33,895 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 06:01:33,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-29 06:01:33,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975004119] [2021-10-29 06:01:33,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 06:01:33,896 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 06:01:33,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 06:01:33,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 06:01:33,897 INFO L87 Difference]: Start difference. First operand 301 states and 397 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) [2021-10-29 06:01:33,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 06:01:33,927 INFO L93 Difference]: Finished difference Result 312 states and 407 transitions. [2021-10-29 06:01:33,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 06:01:33,927 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 [2021-10-29 06:01:33,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 06:01:33,930 INFO L225 Difference]: With dead ends: 312 [2021-10-29 06:01:33,930 INFO L226 Difference]: Without dead ends: 299 [2021-10-29 06:01:33,930 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-29 06:01:33,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2021-10-29 06:01:33,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2021-10-29 06:01:33,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 288 states have (on average 1.3680555555555556) internal successors, (394), 298 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:33,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 394 transitions. [2021-10-29 06:01:33,939 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 394 transitions. Word has length 22 [2021-10-29 06:01:33,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 06:01:33,940 INFO L470 AbstractCegarLoop]: Abstraction has 299 states and 394 transitions. [2021-10-29 06:01:33,940 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) [2021-10-29 06:01:33,940 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 394 transitions. [2021-10-29 06:01:33,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-29 06:01:33,941 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 06:01:33,941 INFO L513 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] [2021-10-29 06:01:33,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-10-29 06:01:33,942 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr50ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 51 more)] === [2021-10-29 06:01:33,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 06:01:33,942 INFO L85 PathProgramCache]: Analyzing trace with hash -391216510, now seen corresponding path program 1 times [2021-10-29 06:01:33,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 06:01:33,943 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969696327] [2021-10-29 06:01:33,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:01:33,943 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 06:01:33,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:01:33,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:01:33,995 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 06:01:33,995 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969696327] [2021-10-29 06:01:33,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969696327] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 06:01:33,996 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 06:01:33,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-29 06:01:33,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306937361] [2021-10-29 06:01:33,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 06:01:33,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 06:01:33,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 06:01:33,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 06:01:33,997 INFO L87 Difference]: Start difference. First operand 299 states and 394 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) [2021-10-29 06:01:34,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 06:01:34,034 INFO L93 Difference]: Finished difference Result 316 states and 410 transitions. [2021-10-29 06:01:34,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 06:01:34,035 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 [2021-10-29 06:01:34,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 06:01:34,037 INFO L225 Difference]: With dead ends: 316 [2021-10-29 06:01:34,037 INFO L226 Difference]: Without dead ends: 316 [2021-10-29 06:01:34,038 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-29 06:01:34,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2021-10-29 06:01:34,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 301. [2021-10-29 06:01:34,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 290 states have (on average 1.3655172413793104) internal successors, (396), 300 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:34,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 396 transitions. [2021-10-29 06:01:34,047 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 396 transitions. Word has length 22 [2021-10-29 06:01:34,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 06:01:34,047 INFO L470 AbstractCegarLoop]: Abstraction has 301 states and 396 transitions. [2021-10-29 06:01:34,047 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) [2021-10-29 06:01:34,047 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 396 transitions. [2021-10-29 06:01:34,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-29 06:01:34,048 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 06:01:34,049 INFO L513 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] [2021-10-29 06:01:34,049 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-10-29 06:01:34,049 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 51 more)] === [2021-10-29 06:01:34,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 06:01:34,050 INFO L85 PathProgramCache]: Analyzing trace with hash 165128784, now seen corresponding path program 1 times [2021-10-29 06:01:34,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 06:01:34,050 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400770281] [2021-10-29 06:01:34,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:01:34,050 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 06:01:34,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:01:34,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:01:34,096 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 06:01:34,096 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400770281] [2021-10-29 06:01:34,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400770281] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 06:01:34,096 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 06:01:34,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-29 06:01:34,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148386438] [2021-10-29 06:01:34,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 06:01:34,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 06:01:34,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 06:01:34,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 06:01:34,098 INFO L87 Difference]: Start difference. First operand 301 states and 396 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) [2021-10-29 06:01:34,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 06:01:34,137 INFO L93 Difference]: Finished difference Result 312 states and 406 transitions. [2021-10-29 06:01:34,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 06:01:34,137 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 [2021-10-29 06:01:34,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 06:01:34,141 INFO L225 Difference]: With dead ends: 312 [2021-10-29 06:01:34,141 INFO L226 Difference]: Without dead ends: 299 [2021-10-29 06:01:34,142 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-29 06:01:34,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2021-10-29 06:01:34,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2021-10-29 06:01:34,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 288 states have (on average 1.3645833333333333) internal successors, (393), 298 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:34,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 393 transitions. [2021-10-29 06:01:34,151 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 393 transitions. Word has length 22 [2021-10-29 06:01:34,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 06:01:34,152 INFO L470 AbstractCegarLoop]: Abstraction has 299 states and 393 transitions. [2021-10-29 06:01:34,152 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) [2021-10-29 06:01:34,152 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 393 transitions. [2021-10-29 06:01:34,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-29 06:01:34,153 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 06:01:34,153 INFO L513 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] [2021-10-29 06:01:34,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-10-29 06:01:34,156 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 51 more)] === [2021-10-29 06:01:34,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 06:01:34,156 INFO L85 PathProgramCache]: Analyzing trace with hash 97930964, now seen corresponding path program 1 times [2021-10-29 06:01:34,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 06:01:34,157 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304919761] [2021-10-29 06:01:34,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:01:34,157 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 06:01:34,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:01:34,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:01:34,207 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 06:01:34,207 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304919761] [2021-10-29 06:01:34,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304919761] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 06:01:34,210 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 06:01:34,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-29 06:01:34,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269890303] [2021-10-29 06:01:34,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 06:01:34,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 06:01:34,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 06:01:34,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 06:01:34,213 INFO L87 Difference]: Start difference. First operand 299 states and 393 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) [2021-10-29 06:01:34,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 06:01:34,441 INFO L93 Difference]: Finished difference Result 314 states and 406 transitions. [2021-10-29 06:01:34,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 06:01:34,441 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 [2021-10-29 06:01:34,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 06:01:34,444 INFO L225 Difference]: With dead ends: 314 [2021-10-29 06:01:34,444 INFO L226 Difference]: Without dead ends: 314 [2021-10-29 06:01:34,444 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-29 06:01:34,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2021-10-29 06:01:34,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 294. [2021-10-29 06:01:34,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 284 states have (on average 1.3556338028169015) internal successors, (385), 293 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:34,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 385 transitions. [2021-10-29 06:01:34,453 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 385 transitions. Word has length 23 [2021-10-29 06:01:34,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 06:01:34,453 INFO L470 AbstractCegarLoop]: Abstraction has 294 states and 385 transitions. [2021-10-29 06:01:34,454 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) [2021-10-29 06:01:34,454 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 385 transitions. [2021-10-29 06:01:34,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-29 06:01:34,455 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 06:01:34,455 INFO L513 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] [2021-10-29 06:01:34,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-10-29 06:01:34,455 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 51 more)] === [2021-10-29 06:01:34,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 06:01:34,456 INFO L85 PathProgramCache]: Analyzing trace with hash -779633763, now seen corresponding path program 1 times [2021-10-29 06:01:34,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 06:01:34,456 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693953871] [2021-10-29 06:01:34,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:01:34,456 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 06:01:34,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:01:34,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:01:34,506 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 06:01:34,506 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693953871] [2021-10-29 06:01:34,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693953871] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 06:01:34,506 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 06:01:34,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-29 06:01:34,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510749207] [2021-10-29 06:01:34,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 06:01:34,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 06:01:34,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 06:01:34,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 06:01:34,508 INFO L87 Difference]: Start difference. First operand 294 states and 385 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) 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) [2021-10-29 06:01:34,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 06:01:34,528 INFO L93 Difference]: Finished difference Result 317 states and 407 transitions. [2021-10-29 06:01:34,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 06:01:34,528 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) 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 [2021-10-29 06:01:34,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 06:01:34,531 INFO L225 Difference]: With dead ends: 317 [2021-10-29 06:01:34,531 INFO L226 Difference]: Without dead ends: 317 [2021-10-29 06:01:34,531 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 06:01:34,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2021-10-29 06:01:34,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 282. [2021-10-29 06:01:34,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 275 states have (on average 1.3345454545454545) internal successors, (367), 281 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:34,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 367 transitions. [2021-10-29 06:01:34,540 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 367 transitions. Word has length 23 [2021-10-29 06:01:34,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 06:01:34,540 INFO L470 AbstractCegarLoop]: Abstraction has 282 states and 367 transitions. [2021-10-29 06:01:34,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) 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) [2021-10-29 06:01:34,541 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 367 transitions. [2021-10-29 06:01:34,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-29 06:01:34,542 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 06:01:34,542 INFO L513 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] [2021-10-29 06:01:34,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-10-29 06:01:34,542 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 51 more)] === [2021-10-29 06:01:34,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 06:01:34,543 INFO L85 PathProgramCache]: Analyzing trace with hash 711438508, now seen corresponding path program 1 times [2021-10-29 06:01:34,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 06:01:34,543 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977466315] [2021-10-29 06:01:34,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:01:34,544 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 06:01:34,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:01:34,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:01:34,729 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 06:01:34,729 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977466315] [2021-10-29 06:01:34,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977466315] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 06:01:34,730 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 06:01:34,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-29 06:01:34,730 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871022530] [2021-10-29 06:01:34,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 06:01:34,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 06:01:34,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 06:01:34,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 06:01:34,732 INFO L87 Difference]: Start difference. First operand 282 states and 367 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) [2021-10-29 06:01:34,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 06:01:34,768 INFO L93 Difference]: Finished difference Result 284 states and 362 transitions. [2021-10-29 06:01:34,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 06:01:34,768 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 [2021-10-29 06:01:34,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 06:01:34,770 INFO L225 Difference]: With dead ends: 284 [2021-10-29 06:01:34,770 INFO L226 Difference]: Without dead ends: 284 [2021-10-29 06:01:34,771 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 06:01:34,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2021-10-29 06:01:34,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 270. [2021-10-29 06:01:34,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 264 states have (on average 1.321969696969697) internal successors, (349), 269 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:34,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 349 transitions. [2021-10-29 06:01:34,779 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 349 transitions. Word has length 24 [2021-10-29 06:01:34,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 06:01:34,779 INFO L470 AbstractCegarLoop]: Abstraction has 270 states and 349 transitions. [2021-10-29 06:01:34,780 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) [2021-10-29 06:01:34,780 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 349 transitions. [2021-10-29 06:01:34,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-29 06:01:34,781 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 06:01:34,781 INFO L513 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] [2021-10-29 06:01:34,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-10-29 06:01:34,781 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr50ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 51 more)] === [2021-10-29 06:01:34,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 06:01:34,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1535414227, now seen corresponding path program 1 times [2021-10-29 06:01:34,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 06:01:34,782 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960976604] [2021-10-29 06:01:34,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:01:34,782 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 06:01:34,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:01:34,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:01:34,830 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 06:01:34,831 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960976604] [2021-10-29 06:01:34,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960976604] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 06:01:34,831 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 06:01:34,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-29 06:01:34,831 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034611912] [2021-10-29 06:01:34,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 06:01:34,832 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 06:01:34,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 06:01:34,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 06:01:34,833 INFO L87 Difference]: Start difference. First operand 270 states and 349 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) [2021-10-29 06:01:34,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 06:01:34,966 INFO L93 Difference]: Finished difference Result 351 states and 444 transitions. [2021-10-29 06:01:34,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 06:01:34,967 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 [2021-10-29 06:01:34,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 06:01:34,970 INFO L225 Difference]: With dead ends: 351 [2021-10-29 06:01:34,970 INFO L226 Difference]: Without dead ends: 340 [2021-10-29 06:01:34,973 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 06:01:34,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2021-10-29 06:01:34,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 286. [2021-10-29 06:01:34,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 280 states have (on average 1.3035714285714286) internal successors, (365), 285 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:34,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 365 transitions. [2021-10-29 06:01:34,983 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 365 transitions. Word has length 24 [2021-10-29 06:01:34,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 06:01:34,984 INFO L470 AbstractCegarLoop]: Abstraction has 286 states and 365 transitions. [2021-10-29 06:01:34,984 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) [2021-10-29 06:01:34,984 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 365 transitions. [2021-10-29 06:01:34,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-29 06:01:34,986 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 06:01:34,986 INFO L513 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] [2021-10-29 06:01:34,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-10-29 06:01:34,987 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 51 more)] === [2021-10-29 06:01:34,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 06:01:34,987 INFO L85 PathProgramCache]: Analyzing trace with hash -476757336, now seen corresponding path program 1 times [2021-10-29 06:01:34,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 06:01:34,987 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582489378] [2021-10-29 06:01:34,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:01:34,988 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 06:01:35,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:01:35,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:01:35,068 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 06:01:35,068 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582489378] [2021-10-29 06:01:35,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582489378] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 06:01:35,069 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 06:01:35,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-29 06:01:35,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596144605] [2021-10-29 06:01:35,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-29 06:01:35,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 06:01:35,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-29 06:01:35,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-29 06:01:35,074 INFO L87 Difference]: Start difference. First operand 286 states and 365 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) [2021-10-29 06:01:35,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 06:01:35,118 INFO L93 Difference]: Finished difference Result 297 states and 375 transitions. [2021-10-29 06:01:35,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-29 06:01:35,118 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 [2021-10-29 06:01:35,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 06:01:35,121 INFO L225 Difference]: With dead ends: 297 [2021-10-29 06:01:35,121 INFO L226 Difference]: Without dead ends: 282 [2021-10-29 06:01:35,121 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-29 06:01:35,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2021-10-29 06:01:35,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2021-10-29 06:01:35,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 276 states have (on average 1.3043478260869565) internal successors, (360), 281 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:35,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 360 transitions. [2021-10-29 06:01:35,129 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 360 transitions. Word has length 24 [2021-10-29 06:01:35,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 06:01:35,130 INFO L470 AbstractCegarLoop]: Abstraction has 282 states and 360 transitions. [2021-10-29 06:01:35,130 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) [2021-10-29 06:01:35,130 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 360 transitions. [2021-10-29 06:01:35,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-29 06:01:35,131 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 06:01:35,131 INFO L513 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] [2021-10-29 06:01:35,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-10-29 06:01:35,132 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 51 more)] === [2021-10-29 06:01:35,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 06:01:35,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1249854526, now seen corresponding path program 1 times [2021-10-29 06:01:35,133 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 06:01:35,133 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402400769] [2021-10-29 06:01:35,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:01:35,133 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 06:01:35,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:01:35,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:01:35,207 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 06:01:35,207 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402400769] [2021-10-29 06:01:35,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402400769] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 06:01:35,207 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 06:01:35,208 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-29 06:01:35,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489907465] [2021-10-29 06:01:35,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 06:01:35,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 06:01:35,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 06:01:35,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 06:01:35,209 INFO L87 Difference]: Start difference. First operand 282 states and 360 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) [2021-10-29 06:01:35,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 06:01:35,359 INFO L93 Difference]: Finished difference Result 282 states and 357 transitions. [2021-10-29 06:01:35,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 06:01:35,359 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 [2021-10-29 06:01:35,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 06:01:35,361 INFO L225 Difference]: With dead ends: 282 [2021-10-29 06:01:35,361 INFO L226 Difference]: Without dead ends: 282 [2021-10-29 06:01:35,362 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-29 06:01:35,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2021-10-29 06:01:35,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2021-10-29 06:01:35,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 276 states have (on average 1.2934782608695652) internal successors, (357), 281 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:35,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 357 transitions. [2021-10-29 06:01:35,370 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 357 transitions. Word has length 25 [2021-10-29 06:01:35,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 06:01:35,370 INFO L470 AbstractCegarLoop]: Abstraction has 282 states and 357 transitions. [2021-10-29 06:01:35,370 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) [2021-10-29 06:01:35,371 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 357 transitions. [2021-10-29 06:01:35,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-29 06:01:35,371 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 06:01:35,372 INFO L513 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] [2021-10-29 06:01:35,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-10-29 06:01:35,372 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 51 more)] === [2021-10-29 06:01:35,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 06:01:35,373 INFO L85 PathProgramCache]: Analyzing trace with hash 370657419, now seen corresponding path program 1 times [2021-10-29 06:01:35,373 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 06:01:35,375 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712375339] [2021-10-29 06:01:35,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:01:35,376 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 06:01:35,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:01:35,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:01:35,444 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 06:01:35,444 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712375339] [2021-10-29 06:01:35,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712375339] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 06:01:35,445 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 06:01:35,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-29 06:01:35,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984021131] [2021-10-29 06:01:35,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 06:01:35,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 06:01:35,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 06:01:35,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 06:01:35,447 INFO L87 Difference]: Start difference. First operand 282 states and 357 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) [2021-10-29 06:01:35,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 06:01:35,584 INFO L93 Difference]: Finished difference Result 284 states and 359 transitions. [2021-10-29 06:01:35,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 06:01:35,585 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 [2021-10-29 06:01:35,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 06:01:35,587 INFO L225 Difference]: With dead ends: 284 [2021-10-29 06:01:35,587 INFO L226 Difference]: Without dead ends: 284 [2021-10-29 06:01:35,588 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-29 06:01:35,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2021-10-29 06:01:35,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 284. [2021-10-29 06:01:35,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 278 states have (on average 1.29136690647482) internal successors, (359), 283 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:35,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 359 transitions. [2021-10-29 06:01:35,597 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 359 transitions. Word has length 25 [2021-10-29 06:01:35,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 06:01:35,597 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 359 transitions. [2021-10-29 06:01:35,597 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) [2021-10-29 06:01:35,597 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 359 transitions. [2021-10-29 06:01:35,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-29 06:01:35,599 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 06:01:35,599 INFO L513 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] [2021-10-29 06:01:35,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-10-29 06:01:35,599 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr52ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 51 more)] === [2021-10-29 06:01:35,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 06:01:35,600 INFO L85 PathProgramCache]: Analyzing trace with hash 370669335, now seen corresponding path program 1 times [2021-10-29 06:01:35,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 06:01:35,600 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649213806] [2021-10-29 06:01:35,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:01:35,601 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 06:01:35,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:01:35,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:01:35,671 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 06:01:35,671 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649213806] [2021-10-29 06:01:35,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649213806] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 06:01:35,672 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 06:01:35,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-29 06:01:35,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194887701] [2021-10-29 06:01:35,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-29 06:01:35,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 06:01:35,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-29 06:01:35,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-29 06:01:35,674 INFO L87 Difference]: Start difference. First operand 284 states and 359 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 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) [2021-10-29 06:01:35,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 06:01:35,828 INFO L93 Difference]: Finished difference Result 340 states and 418 transitions. [2021-10-29 06:01:35,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-29 06:01:35,828 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 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 [2021-10-29 06:01:35,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 06:01:35,831 INFO L225 Difference]: With dead ends: 340 [2021-10-29 06:01:35,831 INFO L226 Difference]: Without dead ends: 328 [2021-10-29 06:01:35,832 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-29 06:01:35,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2021-10-29 06:01:35,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 288. [2021-10-29 06:01:35,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 282 states have (on average 1.2836879432624113) internal successors, (362), 287 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:35,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 362 transitions. [2021-10-29 06:01:35,841 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 362 transitions. Word has length 25 [2021-10-29 06:01:35,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 06:01:35,841 INFO L470 AbstractCegarLoop]: Abstraction has 288 states and 362 transitions. [2021-10-29 06:01:35,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 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) [2021-10-29 06:01:35,842 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 362 transitions. [2021-10-29 06:01:35,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-29 06:01:35,843 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 06:01:35,843 INFO L513 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] [2021-10-29 06:01:35,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-10-29 06:01:35,843 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr50ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 51 more)] === [2021-10-29 06:01:35,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 06:01:35,844 INFO L85 PathProgramCache]: Analyzing trace with hash 730651762, now seen corresponding path program 1 times [2021-10-29 06:01:35,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 06:01:35,844 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13357751] [2021-10-29 06:01:35,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:01:35,845 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 06:01:35,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:01:35,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:01:35,885 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 06:01:35,886 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13357751] [2021-10-29 06:01:35,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13357751] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 06:01:35,886 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 06:01:35,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-29 06:01:35,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566117799] [2021-10-29 06:01:35,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 06:01:35,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 06:01:35,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 06:01:35,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 06:01:35,888 INFO L87 Difference]: Start difference. First operand 288 states and 362 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) [2021-10-29 06:01:36,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 06:01:36,038 INFO L93 Difference]: Finished difference Result 288 states and 354 transitions. [2021-10-29 06:01:36,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 06:01:36,039 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 [2021-10-29 06:01:36,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 06:01:36,041 INFO L225 Difference]: With dead ends: 288 [2021-10-29 06:01:36,041 INFO L226 Difference]: Without dead ends: 288 [2021-10-29 06:01:36,041 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-29 06:01:36,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2021-10-29 06:01:36,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 288. [2021-10-29 06:01:36,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 282 states have (on average 1.2553191489361701) internal successors, (354), 287 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:36,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 354 transitions. [2021-10-29 06:01:36,050 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 354 transitions. Word has length 25 [2021-10-29 06:01:36,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 06:01:36,050 INFO L470 AbstractCegarLoop]: Abstraction has 288 states and 354 transitions. [2021-10-29 06:01:36,050 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) [2021-10-29 06:01:36,051 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 354 transitions. [2021-10-29 06:01:36,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-29 06:01:36,052 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 06:01:36,052 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 06:01:36,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-10-29 06:01:36,052 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 51 more)] === [2021-10-29 06:01:36,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 06:01:36,053 INFO L85 PathProgramCache]: Analyzing trace with hash -982331957, now seen corresponding path program 1 times [2021-10-29 06:01:36,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 06:01:36,053 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573693370] [2021-10-29 06:01:36,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:01:36,054 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 06:01:36,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:01:36,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:01:36,120 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 06:01:36,120 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573693370] [2021-10-29 06:01:36,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573693370] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 06:01:36,121 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 06:01:36,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-29 06:01:36,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116485678] [2021-10-29 06:01:36,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-29 06:01:36,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 06:01:36,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-29 06:01:36,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-29 06:01:36,123 INFO L87 Difference]: Start difference. First operand 288 states and 354 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:36,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 06:01:36,362 INFO L93 Difference]: Finished difference Result 338 states and 416 transitions. [2021-10-29 06:01:36,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-29 06:01:36,363 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-29 06:01:36,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 06:01:36,366 INFO L225 Difference]: With dead ends: 338 [2021-10-29 06:01:36,366 INFO L226 Difference]: Without dead ends: 338 [2021-10-29 06:01:36,366 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-10-29 06:01:36,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2021-10-29 06:01:36,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 288. [2021-10-29 06:01:36,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 282 states have (on average 1.2553191489361701) internal successors, (354), 287 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:36,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 354 transitions. [2021-10-29 06:01:36,375 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 354 transitions. Word has length 26 [2021-10-29 06:01:36,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 06:01:36,375 INFO L470 AbstractCegarLoop]: Abstraction has 288 states and 354 transitions. [2021-10-29 06:01:36,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:36,376 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 354 transitions. [2021-10-29 06:01:36,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-29 06:01:36,377 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 06:01:36,377 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 06:01:36,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-10-29 06:01:36,378 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 51 more)] === [2021-10-29 06:01:36,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 06:01:36,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1811516710, now seen corresponding path program 1 times [2021-10-29 06:01:36,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 06:01:36,379 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580908806] [2021-10-29 06:01:36,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:01:36,380 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 06:01:36,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:01:36,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:01:36,468 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 06:01:36,469 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580908806] [2021-10-29 06:01:36,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580908806] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 06:01:36,469 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 06:01:36,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-29 06:01:36,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116353649] [2021-10-29 06:01:36,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-29 06:01:36,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 06:01:36,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-29 06:01:36,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-29 06:01:36,471 INFO L87 Difference]: Start difference. First operand 288 states and 354 transitions. Second operand has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:36,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 06:01:36,624 INFO L93 Difference]: Finished difference Result 319 states and 385 transitions. [2021-10-29 06:01:36,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-29 06:01:36,628 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-29 06:01:36,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 06:01:36,631 INFO L225 Difference]: With dead ends: 319 [2021-10-29 06:01:36,631 INFO L226 Difference]: Without dead ends: 303 [2021-10-29 06:01:36,631 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-10-29 06:01:36,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2021-10-29 06:01:36,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 282. [2021-10-29 06:01:36,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 276 states have (on average 1.2210144927536233) internal successors, (337), 281 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:36,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 337 transitions. [2021-10-29 06:01:36,639 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 337 transitions. Word has length 26 [2021-10-29 06:01:36,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 06:01:36,640 INFO L470 AbstractCegarLoop]: Abstraction has 282 states and 337 transitions. [2021-10-29 06:01:36,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:36,641 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 337 transitions. [2021-10-29 06:01:36,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-29 06:01:36,642 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 06:01:36,642 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 06:01:36,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-10-29 06:01:36,642 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr50ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 51 more)] === [2021-10-29 06:01:36,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 06:01:36,643 INFO L85 PathProgramCache]: Analyzing trace with hash 821016312, now seen corresponding path program 1 times [2021-10-29 06:01:36,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 06:01:36,644 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052143786] [2021-10-29 06:01:36,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:01:36,644 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 06:01:36,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:01:36,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:01:36,681 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 06:01:36,681 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052143786] [2021-10-29 06:01:36,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052143786] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 06:01:36,682 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 06:01:36,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-29 06:01:36,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440617783] [2021-10-29 06:01:36,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 06:01:36,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 06:01:36,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 06:01:36,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 06:01:36,684 INFO L87 Difference]: Start difference. First operand 282 states and 337 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:36,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 06:01:36,774 INFO L93 Difference]: Finished difference Result 294 states and 345 transitions. [2021-10-29 06:01:36,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 06:01:36,775 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-29 06:01:36,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 06:01:36,777 INFO L225 Difference]: With dead ends: 294 [2021-10-29 06:01:36,777 INFO L226 Difference]: Without dead ends: 269 [2021-10-29 06:01:36,778 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 06:01:36,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2021-10-29 06:01:36,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 259. [2021-10-29 06:01:36,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 253 states have (on average 1.225296442687747) internal successors, (310), 258 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) [2021-10-29 06:01:36,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 310 transitions. [2021-10-29 06:01:36,786 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 310 transitions. Word has length 26 [2021-10-29 06:01:36,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 06:01:36,786 INFO L470 AbstractCegarLoop]: Abstraction has 259 states and 310 transitions. [2021-10-29 06:01:36,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:36,787 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 310 transitions. [2021-10-29 06:01:36,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-29 06:01:36,788 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 06:01:36,788 INFO L513 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] [2021-10-29 06:01:36,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-10-29 06:01:36,788 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 51 more)] === [2021-10-29 06:01:36,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 06:01:36,789 INFO L85 PathProgramCache]: Analyzing trace with hash -300841466, now seen corresponding path program 1 times [2021-10-29 06:01:36,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 06:01:36,789 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699214118] [2021-10-29 06:01:36,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:01:36,790 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 06:01:36,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:01:36,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:01:36,843 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 06:01:36,844 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699214118] [2021-10-29 06:01:36,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699214118] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 06:01:36,844 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 06:01:36,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-29 06:01:36,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274008308] [2021-10-29 06:01:36,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 06:01:36,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 06:01:36,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 06:01:36,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 06:01:36,846 INFO L87 Difference]: Start difference. First operand 259 states and 310 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 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) [2021-10-29 06:01:36,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 06:01:36,957 INFO L93 Difference]: Finished difference Result 263 states and 312 transitions. [2021-10-29 06:01:36,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 06:01:36,958 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 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 [2021-10-29 06:01:36,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 06:01:36,960 INFO L225 Difference]: With dead ends: 263 [2021-10-29 06:01:36,960 INFO L226 Difference]: Without dead ends: 237 [2021-10-29 06:01:36,961 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-29 06:01:36,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2021-10-29 06:01:36,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 233. [2021-10-29 06:01:36,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 227 states have (on average 1.2378854625550662) internal successors, (281), 232 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:36,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 281 transitions. [2021-10-29 06:01:36,968 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 281 transitions. Word has length 27 [2021-10-29 06:01:36,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 06:01:36,969 INFO L470 AbstractCegarLoop]: Abstraction has 233 states and 281 transitions. [2021-10-29 06:01:36,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 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) [2021-10-29 06:01:36,969 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 281 transitions. [2021-10-29 06:01:36,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-29 06:01:36,970 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 06:01:36,970 INFO L513 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] [2021-10-29 06:01:36,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-10-29 06:01:36,971 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr52ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 51 more)] === [2021-10-29 06:01:36,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 06:01:36,972 INFO L85 PathProgramCache]: Analyzing trace with hash -959051651, now seen corresponding path program 1 times [2021-10-29 06:01:36,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 06:01:36,972 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028796162] [2021-10-29 06:01:36,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:01:36,972 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 06:01:36,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:01:37,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:01:37,015 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 06:01:37,016 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028796162] [2021-10-29 06:01:37,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028796162] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 06:01:37,016 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 06:01:37,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-29 06:01:37,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347374076] [2021-10-29 06:01:37,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 06:01:37,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 06:01:37,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 06:01:37,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 06:01:37,019 INFO L87 Difference]: Start difference. First operand 233 states and 281 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 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) [2021-10-29 06:01:37,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 06:01:37,129 INFO L93 Difference]: Finished difference Result 238 states and 284 transitions. [2021-10-29 06:01:37,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 06:01:37,130 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 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 [2021-10-29 06:01:37,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 06:01:37,132 INFO L225 Difference]: With dead ends: 238 [2021-10-29 06:01:37,132 INFO L226 Difference]: Without dead ends: 238 [2021-10-29 06:01:37,134 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-29 06:01:37,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2021-10-29 06:01:37,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 233. [2021-10-29 06:01:37,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 227 states have (on average 1.2334801762114538) internal successors, (280), 232 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:37,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 280 transitions. [2021-10-29 06:01:37,144 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 280 transitions. Word has length 28 [2021-10-29 06:01:37,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 06:01:37,145 INFO L470 AbstractCegarLoop]: Abstraction has 233 states and 280 transitions. [2021-10-29 06:01:37,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 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) [2021-10-29 06:01:37,145 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 280 transitions. [2021-10-29 06:01:37,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-29 06:01:37,148 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 06:01:37,148 INFO L513 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] [2021-10-29 06:01:37,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-10-29 06:01:37,149 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 51 more)] === [2021-10-29 06:01:37,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 06:01:37,149 INFO L85 PathProgramCache]: Analyzing trace with hash 2091701072, now seen corresponding path program 1 times [2021-10-29 06:01:37,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 06:01:37,150 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769936487] [2021-10-29 06:01:37,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:01:37,150 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 06:01:37,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:01:37,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:01:37,229 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 06:01:37,229 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769936487] [2021-10-29 06:01:37,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769936487] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 06:01:37,230 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 06:01:37,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-29 06:01:37,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589685849] [2021-10-29 06:01:37,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-29 06:01:37,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 06:01:37,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-29 06:01:37,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-29 06:01:37,232 INFO L87 Difference]: Start difference. First operand 233 states and 280 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 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) [2021-10-29 06:01:37,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 06:01:37,448 INFO L93 Difference]: Finished difference Result 261 states and 312 transitions. [2021-10-29 06:01:37,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-29 06:01:37,449 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 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 [2021-10-29 06:01:37,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 06:01:37,451 INFO L225 Difference]: With dead ends: 261 [2021-10-29 06:01:37,451 INFO L226 Difference]: Without dead ends: 261 [2021-10-29 06:01:37,452 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-10-29 06:01:37,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2021-10-29 06:01:37,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 233. [2021-10-29 06:01:37,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 227 states have (on average 1.2334801762114538) internal successors, (280), 232 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:37,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 280 transitions. [2021-10-29 06:01:37,462 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 280 transitions. Word has length 28 [2021-10-29 06:01:37,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 06:01:37,462 INFO L470 AbstractCegarLoop]: Abstraction has 233 states and 280 transitions. [2021-10-29 06:01:37,463 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 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) [2021-10-29 06:01:37,463 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 280 transitions. [2021-10-29 06:01:37,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-29 06:01:37,464 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 06:01:37,464 INFO L513 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] [2021-10-29 06:01:37,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-10-29 06:01:37,465 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 51 more)] === [2021-10-29 06:01:37,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 06:01:37,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1716547047, now seen corresponding path program 1 times [2021-10-29 06:01:37,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 06:01:37,466 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613882165] [2021-10-29 06:01:37,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:01:37,466 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 06:01:37,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:01:37,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:01:37,529 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 06:01:37,529 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613882165] [2021-10-29 06:01:37,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613882165] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 06:01:37,530 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 06:01:37,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-29 06:01:37,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299967088] [2021-10-29 06:01:37,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-29 06:01:37,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 06:01:37,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-29 06:01:37,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-29 06:01:37,532 INFO L87 Difference]: Start difference. First operand 233 states and 280 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:37,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 06:01:37,586 INFO L93 Difference]: Finished difference Result 245 states and 291 transitions. [2021-10-29 06:01:37,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-29 06:01:37,586 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 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 29 [2021-10-29 06:01:37,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 06:01:37,588 INFO L225 Difference]: With dead ends: 245 [2021-10-29 06:01:37,589 INFO L226 Difference]: Without dead ends: 226 [2021-10-29 06:01:37,589 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-29 06:01:37,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2021-10-29 06:01:37,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2021-10-29 06:01:37,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 220 states have (on average 1.2272727272727273) internal successors, (270), 225 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:37,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 270 transitions. [2021-10-29 06:01:37,598 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 270 transitions. Word has length 29 [2021-10-29 06:01:37,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 06:01:37,599 INFO L470 AbstractCegarLoop]: Abstraction has 226 states and 270 transitions. [2021-10-29 06:01:37,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:37,599 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 270 transitions. [2021-10-29 06:01:37,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-29 06:01:37,600 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 06:01:37,601 INFO L513 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] [2021-10-29 06:01:37,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-10-29 06:01:37,601 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr52ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 51 more)] === [2021-10-29 06:01:37,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 06:01:37,602 INFO L85 PathProgramCache]: Analyzing trace with hash -195455352, now seen corresponding path program 1 times [2021-10-29 06:01:37,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 06:01:37,602 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333703061] [2021-10-29 06:01:37,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:01:37,603 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 06:01:37,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:01:37,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:01:37,643 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 06:01:37,643 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333703061] [2021-10-29 06:01:37,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333703061] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 06:01:37,643 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 06:01:37,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-29 06:01:37,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58895065] [2021-10-29 06:01:37,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 06:01:37,645 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 06:01:37,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 06:01:37,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 06:01:37,646 INFO L87 Difference]: Start difference. First operand 226 states and 270 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:37,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 06:01:37,747 INFO L93 Difference]: Finished difference Result 213 states and 252 transitions. [2021-10-29 06:01:37,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 06:01:37,748 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 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 29 [2021-10-29 06:01:37,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 06:01:37,750 INFO L225 Difference]: With dead ends: 213 [2021-10-29 06:01:37,750 INFO L226 Difference]: Without dead ends: 213 [2021-10-29 06:01:37,750 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-29 06:01:37,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2021-10-29 06:01:37,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2021-10-29 06:01:37,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 207 states have (on average 1.2173913043478262) internal successors, (252), 212 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:37,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 252 transitions. [2021-10-29 06:01:37,758 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 252 transitions. Word has length 29 [2021-10-29 06:01:37,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 06:01:37,758 INFO L470 AbstractCegarLoop]: Abstraction has 213 states and 252 transitions. [2021-10-29 06:01:37,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:37,759 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 252 transitions. [2021-10-29 06:01:37,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-29 06:01:37,760 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 06:01:37,760 INFO L513 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] [2021-10-29 06:01:37,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-10-29 06:01:37,760 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr50ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 51 more)] === [2021-10-29 06:01:37,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 06:01:37,761 INFO L85 PathProgramCache]: Analyzing trace with hash -2126284348, now seen corresponding path program 1 times [2021-10-29 06:01:37,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 06:01:37,762 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898225504] [2021-10-29 06:01:37,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:01:37,762 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 06:01:37,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:01:37,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:01:37,806 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 06:01:37,807 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898225504] [2021-10-29 06:01:37,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898225504] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 06:01:37,807 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 06:01:37,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-29 06:01:37,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538022208] [2021-10-29 06:01:37,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-29 06:01:37,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 06:01:37,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-29 06:01:37,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-29 06:01:37,809 INFO L87 Difference]: Start difference. First operand 213 states and 252 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:37,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 06:01:37,848 INFO L93 Difference]: Finished difference Result 216 states and 254 transitions. [2021-10-29 06:01:37,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-29 06:01:37,848 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 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 29 [2021-10-29 06:01:37,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 06:01:37,850 INFO L225 Difference]: With dead ends: 216 [2021-10-29 06:01:37,850 INFO L226 Difference]: Without dead ends: 213 [2021-10-29 06:01:37,851 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-29 06:01:37,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2021-10-29 06:01:37,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2021-10-29 06:01:37,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 207 states have (on average 1.21256038647343) internal successors, (251), 212 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:37,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 251 transitions. [2021-10-29 06:01:37,858 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 251 transitions. Word has length 29 [2021-10-29 06:01:37,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 06:01:37,858 INFO L470 AbstractCegarLoop]: Abstraction has 213 states and 251 transitions. [2021-10-29 06:01:37,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:37,858 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 251 transitions. [2021-10-29 06:01:37,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-29 06:01:37,859 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 06:01:37,859 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 06:01:37,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-10-29 06:01:37,861 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr52ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 51 more)] === [2021-10-29 06:01:37,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 06:01:37,864 INFO L85 PathProgramCache]: Analyzing trace with hash -566161672, now seen corresponding path program 1 times [2021-10-29 06:01:37,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 06:01:37,864 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867112246] [2021-10-29 06:01:37,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:01:37,865 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 06:01:37,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:01:37,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:01:37,944 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 06:01:37,945 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867112246] [2021-10-29 06:01:37,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867112246] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 06:01:37,945 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 06:01:37,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-29 06:01:37,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006714245] [2021-10-29 06:01:37,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-29 06:01:37,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 06:01:37,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-29 06:01:37,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-29 06:01:37,947 INFO L87 Difference]: Start difference. First operand 213 states and 251 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:38,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 06:01:38,080 INFO L93 Difference]: Finished difference Result 232 states and 267 transitions. [2021-10-29 06:01:38,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-29 06:01:38,081 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2021-10-29 06:01:38,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 06:01:38,082 INFO L225 Difference]: With dead ends: 232 [2021-10-29 06:01:38,082 INFO L226 Difference]: Without dead ends: 213 [2021-10-29 06:01:38,083 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-29 06:01:38,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2021-10-29 06:01:38,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 203. [2021-10-29 06:01:38,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 197 states have (on average 1.2131979695431472) internal successors, (239), 202 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:38,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 239 transitions. [2021-10-29 06:01:38,089 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 239 transitions. Word has length 30 [2021-10-29 06:01:38,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 06:01:38,089 INFO L470 AbstractCegarLoop]: Abstraction has 203 states and 239 transitions. [2021-10-29 06:01:38,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:38,090 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 239 transitions. [2021-10-29 06:01:38,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-29 06:01:38,091 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 06:01:38,091 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 06:01:38,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-10-29 06:01:38,091 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 51 more)] === [2021-10-29 06:01:38,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 06:01:38,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1938220481, now seen corresponding path program 1 times [2021-10-29 06:01:38,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 06:01:38,092 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862552494] [2021-10-29 06:01:38,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:01:38,093 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 06:01:38,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:01:38,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:01:38,158 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 06:01:38,159 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862552494] [2021-10-29 06:01:38,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862552494] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 06:01:38,159 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 06:01:38,159 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-29 06:01:38,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672215771] [2021-10-29 06:01:38,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-29 06:01:38,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 06:01:38,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-29 06:01:38,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-29 06:01:38,161 INFO L87 Difference]: Start difference. First operand 203 states and 239 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:38,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 06:01:38,321 INFO L93 Difference]: Finished difference Result 211 states and 250 transitions. [2021-10-29 06:01:38,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-29 06:01:38,321 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2021-10-29 06:01:38,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 06:01:38,323 INFO L225 Difference]: With dead ends: 211 [2021-10-29 06:01:38,323 INFO L226 Difference]: Without dead ends: 211 [2021-10-29 06:01:38,323 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-10-29 06:01:38,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2021-10-29 06:01:38,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 193. [2021-10-29 06:01:38,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 188 states have (on average 1.202127659574468) internal successors, (226), 192 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:38,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 226 transitions. [2021-10-29 06:01:38,329 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 226 transitions. Word has length 30 [2021-10-29 06:01:38,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 06:01:38,329 INFO L470 AbstractCegarLoop]: Abstraction has 193 states and 226 transitions. [2021-10-29 06:01:38,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:38,329 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 226 transitions. [2021-10-29 06:01:38,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-29 06:01:38,330 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 06:01:38,330 INFO L513 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] [2021-10-29 06:01:38,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-10-29 06:01:38,331 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr50ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 51 more)] === [2021-10-29 06:01:38,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 06:01:38,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1256861320, now seen corresponding path program 1 times [2021-10-29 06:01:38,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 06:01:38,331 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652051890] [2021-10-29 06:01:38,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:01:38,332 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 06:01:38,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:01:38,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:01:38,379 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 06:01:38,379 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652051890] [2021-10-29 06:01:38,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652051890] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 06:01:38,380 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 06:01:38,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-29 06:01:38,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934845223] [2021-10-29 06:01:38,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-29 06:01:38,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 06:01:38,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-29 06:01:38,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-29 06:01:38,382 INFO L87 Difference]: Start difference. First operand 193 states and 226 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:38,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 06:01:38,409 INFO L93 Difference]: Finished difference Result 182 states and 212 transitions. [2021-10-29 06:01:38,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-29 06:01:38,410 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 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 31 [2021-10-29 06:01:38,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 06:01:38,411 INFO L225 Difference]: With dead ends: 182 [2021-10-29 06:01:38,412 INFO L226 Difference]: Without dead ends: 155 [2021-10-29 06:01:38,412 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-29 06:01:38,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-10-29 06:01:38,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2021-10-29 06:01:38,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 151 states have (on average 1.1721854304635762) internal successors, (177), 154 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:38,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 177 transitions. [2021-10-29 06:01:38,417 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 177 transitions. Word has length 31 [2021-10-29 06:01:38,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 06:01:38,417 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 177 transitions. [2021-10-29 06:01:38,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:38,418 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 177 transitions. [2021-10-29 06:01:38,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-29 06:01:38,419 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 06:01:38,419 INFO L513 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] [2021-10-29 06:01:38,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-10-29 06:01:38,419 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 51 more)] === [2021-10-29 06:01:38,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 06:01:38,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1695294483, now seen corresponding path program 1 times [2021-10-29 06:01:38,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 06:01:38,421 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015715371] [2021-10-29 06:01:38,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:01:38,421 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 06:01:38,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:01:38,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:01:38,480 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 06:01:38,480 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015715371] [2021-10-29 06:01:38,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015715371] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 06:01:38,481 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 06:01:38,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-29 06:01:38,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667663234] [2021-10-29 06:01:38,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-29 06:01:38,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 06:01:38,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-29 06:01:38,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-29 06:01:38,483 INFO L87 Difference]: Start difference. First operand 155 states and 177 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:38,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 06:01:38,654 INFO L93 Difference]: Finished difference Result 163 states and 189 transitions. [2021-10-29 06:01:38,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-29 06:01:38,654 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2021-10-29 06:01:38,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 06:01:38,656 INFO L225 Difference]: With dead ends: 163 [2021-10-29 06:01:38,656 INFO L226 Difference]: Without dead ends: 163 [2021-10-29 06:01:38,656 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-10-29 06:01:38,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-10-29 06:01:38,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 148. [2021-10-29 06:01:38,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 145 states have (on average 1.1586206896551725) internal successors, (168), 147 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:38,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 168 transitions. [2021-10-29 06:01:38,661 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 168 transitions. Word has length 32 [2021-10-29 06:01:38,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 06:01:38,662 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 168 transitions. [2021-10-29 06:01:38,662 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:38,662 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 168 transitions. [2021-10-29 06:01:38,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-29 06:01:38,663 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 06:01:38,663 INFO L513 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] [2021-10-29 06:01:38,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-10-29 06:01:38,664 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr52ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 51 more)] === [2021-10-29 06:01:38,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 06:01:38,665 INFO L85 PathProgramCache]: Analyzing trace with hash -129707583, now seen corresponding path program 1 times [2021-10-29 06:01:38,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 06:01:38,665 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303447986] [2021-10-29 06:01:38,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:01:38,665 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 06:01:38,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:01:38,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:01:38,740 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 06:01:38,740 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303447986] [2021-10-29 06:01:38,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303447986] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 06:01:38,741 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 06:01:38,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-29 06:01:38,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338662076] [2021-10-29 06:01:38,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-29 06:01:38,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 06:01:38,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-29 06:01:38,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-29 06:01:38,744 INFO L87 Difference]: Start difference. First operand 148 states and 168 transitions. Second operand has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:38,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 06:01:38,874 INFO L93 Difference]: Finished difference Result 162 states and 181 transitions. [2021-10-29 06:01:38,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-29 06:01:38,875 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 0 states have call successors, (0), 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 33 [2021-10-29 06:01:38,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 06:01:38,876 INFO L225 Difference]: With dead ends: 162 [2021-10-29 06:01:38,876 INFO L226 Difference]: Without dead ends: 118 [2021-10-29 06:01:38,876 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-29 06:01:38,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-10-29 06:01:38,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 102. [2021-10-29 06:01:38,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 100 states have (on average 1.19) internal successors, (119), 101 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:38,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 119 transitions. [2021-10-29 06:01:38,880 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 119 transitions. Word has length 33 [2021-10-29 06:01:38,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 06:01:38,881 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 119 transitions. [2021-10-29 06:01:38,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:38,881 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 119 transitions. [2021-10-29 06:01:38,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-10-29 06:01:38,882 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 06:01:38,882 INFO L513 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] [2021-10-29 06:01:38,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-10-29 06:01:38,882 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 51 more)] === [2021-10-29 06:01:38,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 06:01:38,883 INFO L85 PathProgramCache]: Analyzing trace with hash 102703895, now seen corresponding path program 1 times [2021-10-29 06:01:38,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 06:01:38,884 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993015297] [2021-10-29 06:01:38,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:01:38,884 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 06:01:38,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:01:38,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:01:38,969 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 06:01:38,969 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993015297] [2021-10-29 06:01:38,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993015297] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 06:01:38,970 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 06:01:38,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-29 06:01:38,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049769392] [2021-10-29 06:01:38,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-29 06:01:38,971 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 06:01:38,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-29 06:01:38,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-29 06:01:38,972 INFO L87 Difference]: Start difference. First operand 102 states and 119 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:39,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 06:01:39,064 INFO L93 Difference]: Finished difference Result 132 states and 160 transitions. [2021-10-29 06:01:39,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-29 06:01:39,065 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-10-29 06:01:39,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 06:01:39,067 INFO L225 Difference]: With dead ends: 132 [2021-10-29 06:01:39,067 INFO L226 Difference]: Without dead ends: 132 [2021-10-29 06:01:39,067 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-10-29 06:01:39,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-10-29 06:01:39,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 102. [2021-10-29 06:01:39,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 100 states have (on average 1.19) internal successors, (119), 101 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:39,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 119 transitions. [2021-10-29 06:01:39,071 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 119 transitions. Word has length 36 [2021-10-29 06:01:39,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 06:01:39,072 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 119 transitions. [2021-10-29 06:01:39,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:39,072 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 119 transitions. [2021-10-29 06:01:39,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-10-29 06:01:39,073 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 06:01:39,073 INFO L513 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] [2021-10-29 06:01:39,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-10-29 06:01:39,073 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 51 more)] === [2021-10-29 06:01:39,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 06:01:39,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1181845415, now seen corresponding path program 1 times [2021-10-29 06:01:39,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 06:01:39,074 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145377029] [2021-10-29 06:01:39,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:01:39,075 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 06:01:39,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:01:39,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:01:39,126 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 06:01:39,126 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145377029] [2021-10-29 06:01:39,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145377029] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 06:01:39,127 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 06:01:39,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-29 06:01:39,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172226343] [2021-10-29 06:01:39,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-29 06:01:39,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 06:01:39,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-29 06:01:39,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-29 06:01:39,129 INFO L87 Difference]: Start difference. First operand 102 states and 119 transitions. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:39,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 06:01:39,202 INFO L93 Difference]: Finished difference Result 116 states and 132 transitions. [2021-10-29 06:01:39,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-29 06:01:39,203 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 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 40 [2021-10-29 06:01:39,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 06:01:39,204 INFO L225 Difference]: With dead ends: 116 [2021-10-29 06:01:39,204 INFO L226 Difference]: Without dead ends: 102 [2021-10-29 06:01:39,204 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-10-29 06:01:39,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-10-29 06:01:39,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2021-10-29 06:01:39,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 100 states have (on average 1.18) internal successors, (118), 101 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:39,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 118 transitions. [2021-10-29 06:01:39,209 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 118 transitions. Word has length 40 [2021-10-29 06:01:39,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 06:01:39,211 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 118 transitions. [2021-10-29 06:01:39,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:39,212 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 118 transitions. [2021-10-29 06:01:39,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-10-29 06:01:39,212 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 06:01:39,213 INFO L513 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] [2021-10-29 06:01:39,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-10-29 06:01:39,214 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 51 more)] === [2021-10-29 06:01:39,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 06:01:39,214 INFO L85 PathProgramCache]: Analyzing trace with hash -309875606, now seen corresponding path program 1 times [2021-10-29 06:01:39,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 06:01:39,215 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879559429] [2021-10-29 06:01:39,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:01:39,215 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 06:01:39,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:01:39,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:01:39,301 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 06:01:39,301 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879559429] [2021-10-29 06:01:39,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879559429] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 06:01:39,301 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 06:01:39,302 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-29 06:01:39,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554049404] [2021-10-29 06:01:39,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-29 06:01:39,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 06:01:39,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-29 06:01:39,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-29 06:01:39,303 INFO L87 Difference]: Start difference. First operand 102 states and 118 transitions. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:39,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 06:01:39,399 INFO L93 Difference]: Finished difference Result 127 states and 144 transitions. [2021-10-29 06:01:39,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-29 06:01:39,399 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 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 40 [2021-10-29 06:01:39,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 06:01:39,401 INFO L225 Difference]: With dead ends: 127 [2021-10-29 06:01:39,402 INFO L226 Difference]: Without dead ends: 111 [2021-10-29 06:01:39,402 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-29 06:01:39,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-10-29 06:01:39,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 109. [2021-10-29 06:01:39,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 107 states have (on average 1.1682242990654206) internal successors, (125), 108 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:39,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 125 transitions. [2021-10-29 06:01:39,407 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 125 transitions. Word has length 40 [2021-10-29 06:01:39,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 06:01:39,408 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 125 transitions. [2021-10-29 06:01:39,408 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:39,408 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 125 transitions. [2021-10-29 06:01:39,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-10-29 06:01:39,409 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 06:01:39,409 INFO L513 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] [2021-10-29 06:01:39,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-10-29 06:01:39,409 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 51 more)] === [2021-10-29 06:01:39,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 06:01:39,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1713932490, now seen corresponding path program 1 times [2021-10-29 06:01:39,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 06:01:39,411 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426813435] [2021-10-29 06:01:39,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:01:39,411 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 06:01:39,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:01:39,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:01:39,484 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 06:01:39,484 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426813435] [2021-10-29 06:01:39,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426813435] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 06:01:39,485 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 06:01:39,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-29 06:01:39,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021069936] [2021-10-29 06:01:39,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-29 06:01:39,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 06:01:39,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-29 06:01:39,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-29 06:01:39,487 INFO L87 Difference]: Start difference. First operand 109 states and 125 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:39,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 06:01:39,585 INFO L93 Difference]: Finished difference Result 116 states and 133 transitions. [2021-10-29 06:01:39,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-29 06:01:39,585 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 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 40 [2021-10-29 06:01:39,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 06:01:39,587 INFO L225 Difference]: With dead ends: 116 [2021-10-29 06:01:39,587 INFO L226 Difference]: Without dead ends: 116 [2021-10-29 06:01:39,587 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-10-29 06:01:39,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-10-29 06:01:39,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 87. [2021-10-29 06:01:39,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 1.1046511627906976) internal successors, (95), 86 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:39,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 95 transitions. [2021-10-29 06:01:39,591 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 95 transitions. Word has length 40 [2021-10-29 06:01:39,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 06:01:39,591 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 95 transitions. [2021-10-29 06:01:39,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:39,592 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 95 transitions. [2021-10-29 06:01:39,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-10-29 06:01:39,592 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 06:01:39,593 INFO L513 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] [2021-10-29 06:01:39,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-10-29 06:01:39,593 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 51 more)] === [2021-10-29 06:01:39,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 06:01:39,594 INFO L85 PathProgramCache]: Analyzing trace with hash -966827799, now seen corresponding path program 1 times [2021-10-29 06:01:39,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 06:01:39,594 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499922046] [2021-10-29 06:01:39,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:01:39,594 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 06:01:39,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:01:39,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:01:39,673 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 06:01:39,674 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499922046] [2021-10-29 06:01:39,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499922046] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 06:01:39,674 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 06:01:39,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-29 06:01:39,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782533495] [2021-10-29 06:01:39,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-29 06:01:39,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 06:01:39,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-29 06:01:39,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-29 06:01:39,676 INFO L87 Difference]: Start difference. First operand 87 states and 95 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:39,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 06:01:39,779 INFO L93 Difference]: Finished difference Result 99 states and 106 transitions. [2021-10-29 06:01:39,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-29 06:01:39,779 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2021-10-29 06:01:39,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 06:01:39,780 INFO L225 Difference]: With dead ends: 99 [2021-10-29 06:01:39,780 INFO L226 Difference]: Without dead ends: 65 [2021-10-29 06:01:39,780 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2021-10-29 06:01:39,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-10-29 06:01:39,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2021-10-29 06:01:39,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.109375) internal successors, (71), 64 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:39,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 71 transitions. [2021-10-29 06:01:39,783 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 71 transitions. Word has length 43 [2021-10-29 06:01:39,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 06:01:39,784 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 71 transitions. [2021-10-29 06:01:39,784 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:39,784 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 71 transitions. [2021-10-29 06:01:39,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-10-29 06:01:39,785 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 06:01:39,785 INFO L513 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] [2021-10-29 06:01:39,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-10-29 06:01:39,786 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 51 more)] === [2021-10-29 06:01:39,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 06:01:39,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1620217724, now seen corresponding path program 1 times [2021-10-29 06:01:39,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 06:01:39,787 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101526848] [2021-10-29 06:01:39,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:01:39,787 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 06:01:39,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:01:39,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:01:39,849 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 06:01:39,849 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101526848] [2021-10-29 06:01:39,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101526848] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 06:01:39,849 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 06:01:39,849 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-29 06:01:39,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761382824] [2021-10-29 06:01:39,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 06:01:39,850 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 06:01:39,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 06:01:39,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 06:01:39,851 INFO L87 Difference]: Start difference. First operand 65 states and 71 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:39,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 06:01:39,883 INFO L93 Difference]: Finished difference Result 67 states and 72 transitions. [2021-10-29 06:01:39,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 06:01:39,884 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2021-10-29 06:01:39,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 06:01:39,885 INFO L225 Difference]: With dead ends: 67 [2021-10-29 06:01:39,885 INFO L226 Difference]: Without dead ends: 65 [2021-10-29 06:01:39,885 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-29 06:01:39,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-10-29 06:01:39,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2021-10-29 06:01:39,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.09375) internal successors, (70), 64 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:39,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 70 transitions. [2021-10-29 06:01:39,888 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 70 transitions. Word has length 43 [2021-10-29 06:01:39,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 06:01:39,889 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 70 transitions. [2021-10-29 06:01:39,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:39,889 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 70 transitions. [2021-10-29 06:01:39,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-10-29 06:01:39,894 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 06:01:39,895 INFO L513 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] [2021-10-29 06:01:39,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-10-29 06:01:39,895 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 51 more)] === [2021-10-29 06:01:39,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 06:01:39,896 INFO L85 PathProgramCache]: Analyzing trace with hash -437763356, now seen corresponding path program 1 times [2021-10-29 06:01:39,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 06:01:39,896 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815778825] [2021-10-29 06:01:39,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:01:39,897 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 06:01:39,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:01:39,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:01:39,979 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 06:01:39,980 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815778825] [2021-10-29 06:01:39,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815778825] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 06:01:39,980 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 06:01:39,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-29 06:01:39,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726102477] [2021-10-29 06:01:39,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-29 06:01:39,981 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 06:01:39,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-29 06:01:39,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-29 06:01:39,992 INFO L87 Difference]: Start difference. First operand 65 states and 70 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:40,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 06:01:40,080 INFO L93 Difference]: Finished difference Result 81 states and 85 transitions. [2021-10-29 06:01:40,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-29 06:01:40,081 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-10-29 06:01:40,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 06:01:40,082 INFO L225 Difference]: With dead ends: 81 [2021-10-29 06:01:40,082 INFO L226 Difference]: Without dead ends: 65 [2021-10-29 06:01:40,083 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-29 06:01:40,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-10-29 06:01:40,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2021-10-29 06:01:40,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.078125) internal successors, (69), 64 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:40,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2021-10-29 06:01:40,085 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 52 [2021-10-29 06:01:40,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 06:01:40,086 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2021-10-29 06:01:40,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:40,086 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2021-10-29 06:01:40,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-10-29 06:01:40,087 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 06:01:40,087 INFO L513 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] [2021-10-29 06:01:40,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-10-29 06:01:40,088 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 51 more)] === [2021-10-29 06:01:40,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 06:01:40,088 INFO L85 PathProgramCache]: Analyzing trace with hash 2060542826, now seen corresponding path program 1 times [2021-10-29 06:01:40,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 06:01:40,089 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3799428] [2021-10-29 06:01:40,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:01:40,089 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 06:01:40,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:01:40,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:01:40,199 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 06:01:40,199 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3799428] [2021-10-29 06:01:40,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3799428] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 06:01:40,200 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 06:01:40,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-29 06:01:40,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169315278] [2021-10-29 06:01:40,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-29 06:01:40,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 06:01:40,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-29 06:01:40,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-10-29 06:01:40,202 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand has 9 states, 9 states have (on average 6.0) internal successors, (54), 9 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:40,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 06:01:40,416 INFO L93 Difference]: Finished difference Result 108 states and 113 transitions. [2021-10-29 06:01:40,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-29 06:01:40,417 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 9 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-10-29 06:01:40,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 06:01:40,418 INFO L225 Difference]: With dead ends: 108 [2021-10-29 06:01:40,418 INFO L226 Difference]: Without dead ends: 62 [2021-10-29 06:01:40,418 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2021-10-29 06:01:40,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-10-29 06:01:40,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2021-10-29 06:01:40,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.0327868852459017) internal successors, (63), 61 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) [2021-10-29 06:01:40,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 63 transitions. [2021-10-29 06:01:40,420 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 63 transitions. Word has length 54 [2021-10-29 06:01:40,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 06:01:40,421 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 63 transitions. [2021-10-29 06:01:40,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 9 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:40,421 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 63 transitions. [2021-10-29 06:01:40,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-10-29 06:01:40,422 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 06:01:40,422 INFO L513 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] [2021-10-29 06:01:40,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-10-29 06:01:40,422 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 51 more)] === [2021-10-29 06:01:40,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 06:01:40,422 INFO L85 PathProgramCache]: Analyzing trace with hash -924936009, now seen corresponding path program 1 times [2021-10-29 06:01:40,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 06:01:40,423 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336144300] [2021-10-29 06:01:40,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:01:40,423 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 06:01:40,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:01:40,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:01:40,618 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 06:01:40,618 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336144300] [2021-10-29 06:01:40,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336144300] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 06:01:40,619 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 06:01:40,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-29 06:01:40,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450175483] [2021-10-29 06:01:40,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-29 06:01:40,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 06:01:40,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-29 06:01:40,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-10-29 06:01:40,621 INFO L87 Difference]: Start difference. First operand 62 states and 63 transitions. Second operand has 10 states, 10 states have (on average 5.7) internal successors, (57), 10 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:40,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 06:01:40,803 INFO L93 Difference]: Finished difference Result 75 states and 76 transitions. [2021-10-29 06:01:40,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-29 06:01:40,804 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.7) internal successors, (57), 10 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-10-29 06:01:40,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 06:01:40,804 INFO L225 Difference]: With dead ends: 75 [2021-10-29 06:01:40,805 INFO L226 Difference]: Without dead ends: 0 [2021-10-29 06:01:40,805 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2021-10-29 06:01:40,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-29 06:01:40,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-29 06:01:40,806 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) [2021-10-29 06:01:40,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-29 06:01:40,806 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 57 [2021-10-29 06:01:40,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 06:01:40,806 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-29 06:01:40,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.7) internal successors, (57), 10 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:40,806 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-29 06:01:40,807 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-29 06:01:40,809 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK [2021-10-29 06:01:40,811 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK [2021-10-29 06:01:40,811 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK [2021-10-29 06:01:40,816 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK [2021-10-29 06:01:40,816 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK [2021-10-29 06:01:40,817 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK [2021-10-29 06:01:40,817 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK [2021-10-29 06:01:40,818 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK [2021-10-29 06:01:40,818 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK [2021-10-29 06:01:40,819 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK [2021-10-29 06:01:40,819 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK [2021-10-29 06:01:40,819 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK [2021-10-29 06:01:40,819 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK [2021-10-29 06:01:40,820 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK [2021-10-29 06:01:40,820 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK [2021-10-29 06:01:40,820 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK [2021-10-29 06:01:40,820 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK [2021-10-29 06:01:40,821 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK [2021-10-29 06:01:40,821 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK [2021-10-29 06:01:40,821 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK [2021-10-29 06:01:40,821 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK [2021-10-29 06:01:40,822 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK [2021-10-29 06:01:40,822 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK [2021-10-29 06:01:40,822 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK [2021-10-29 06:01:40,823 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK [2021-10-29 06:01:40,823 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK [2021-10-29 06:01:40,823 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK [2021-10-29 06:01:40,823 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK [2021-10-29 06:01:40,824 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK [2021-10-29 06:01:40,824 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK [2021-10-29 06:01:40,824 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK [2021-10-29 06:01:40,824 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_LEAK [2021-10-29 06:01:40,825 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_LEAK [2021-10-29 06:01:40,825 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK [2021-10-29 06:01:40,825 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK [2021-10-29 06:01:40,825 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_LEAK [2021-10-29 06:01:40,826 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_LEAK [2021-10-29 06:01:40,826 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_LEAK [2021-10-29 06:01:40,826 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK [2021-10-29 06:01:40,826 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK [2021-10-29 06:01:40,827 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK [2021-10-29 06:01:40,827 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_LEAK [2021-10-29 06:01:40,827 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK [2021-10-29 06:01:40,827 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_LEAK [2021-10-29 06:01:40,828 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK [2021-10-29 06:01:40,828 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_LEAK [2021-10-29 06:01:40,828 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_LEAK [2021-10-29 06:01:40,828 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr47ASSERT_VIOLATIONMEMORY_LEAK [2021-10-29 06:01:40,829 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr48ASSERT_VIOLATIONMEMORY_LEAK [2021-10-29 06:01:40,829 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_LEAK [2021-10-29 06:01:40,829 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr50ASSERT_VIOLATIONMEMORY_LEAK [2021-10-29 06:01:40,829 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_LEAK [2021-10-29 06:01:40,830 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr52ASSERT_VIOLATIONMEMORY_LEAK [2021-10-29 06:01:40,830 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr53ASSERT_VIOLATIONMEMORY_LEAK [2021-10-29 06:01:40,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-10-29 06:01:40,834 INFO L731 BasicCegarLoop]: Path program 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] [2021-10-29 06:01:40,836 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 06:01:40,841 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 06:01:40 BoogieIcfgContainer [2021-10-29 06:01:40,841 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 06:01:40,842 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 06:01:40,842 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 06:01:40,842 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 06:01:40,843 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 06:01:30" (3/4) ... [2021-10-29 06:01:40,846 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-29 06:01:40,903 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 297 nodes and edges [2021-10-29 06:01:40,910 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 89 nodes and edges [2021-10-29 06:01:40,917 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-10-29 06:01:40,923 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-10-29 06:01:41,286 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab285d30-b7bd-40e2-8bbe-197cb190c154/bin/utaipan-SDwSMHVbGG/witness.graphml [2021-10-29 06:01:41,286 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 06:01:41,288 INFO L168 Benchmark]: Toolchain (without parser) took 15106.84 ms. Allocated memory was 104.9 MB in the beginning and 268.4 MB in the end (delta: 163.6 MB). Free memory was 65.3 MB in the beginning and 171.0 MB in the end (delta: -105.7 MB). Peak memory consumption was 58.0 MB. Max. memory is 16.1 GB. [2021-10-29 06:01:41,289 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 104.9 MB. Free memory is still 83.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 06:01:41,290 INFO L168 Benchmark]: CACSL2BoogieTranslator took 705.98 ms. Allocated memory is still 104.9 MB. Free memory was 65.1 MB in the beginning and 67.3 MB in the end (delta: -2.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-29 06:01:41,291 INFO L168 Benchmark]: Boogie Procedure Inliner took 204.46 ms. Allocated memory is still 104.9 MB. Free memory was 67.3 MB in the beginning and 56.4 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-29 06:01:41,292 INFO L168 Benchmark]: Boogie Preprocessor took 124.55 ms. Allocated memory is still 104.9 MB. Free memory was 56.4 MB in the beginning and 49.9 MB in the end (delta: 6.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-29 06:01:41,293 INFO L168 Benchmark]: RCFGBuilder took 3285.26 ms. Allocated memory was 104.9 MB in the beginning and 153.1 MB in the end (delta: 48.2 MB). Free memory was 49.9 MB in the beginning and 50.2 MB in the end (delta: -303.1 kB). Peak memory consumption was 55.2 MB. Max. memory is 16.1 GB. [2021-10-29 06:01:41,293 INFO L168 Benchmark]: TraceAbstraction took 10334.69 ms. Allocated memory was 153.1 MB in the beginning and 268.4 MB in the end (delta: 115.3 MB). Free memory was 50.2 MB in the beginning and 211.9 MB in the end (delta: -161.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 06:01:41,294 INFO L168 Benchmark]: Witness Printer took 444.65 ms. Allocated memory is still 268.4 MB. Free memory was 211.9 MB in the beginning and 171.0 MB in the end (delta: 40.9 MB). Peak memory consumption was 41.9 MB. Max. memory is 16.1 GB. [2021-10-29 06:01:41,297 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 104.9 MB. Free memory is still 83.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 705.98 ms. Allocated memory is still 104.9 MB. Free memory was 65.1 MB in the beginning and 67.3 MB in the end (delta: -2.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 204.46 ms. Allocated memory is still 104.9 MB. Free memory was 67.3 MB in the beginning and 56.4 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 124.55 ms. Allocated memory is still 104.9 MB. Free memory was 56.4 MB in the beginning and 49.9 MB in the end (delta: 6.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * RCFGBuilder took 3285.26 ms. Allocated memory was 104.9 MB in the beginning and 153.1 MB in the end (delta: 48.2 MB). Free memory was 49.9 MB in the beginning and 50.2 MB in the end (delta: -303.1 kB). Peak memory consumption was 55.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 10334.69 ms. Allocated memory was 153.1 MB in the beginning and 268.4 MB in the end (delta: 115.3 MB). Free memory was 50.2 MB in the beginning and 211.9 MB in the end (delta: -161.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 444.65 ms. Allocated memory is still 268.4 MB. Free memory was 211.9 MB in the beginning and 171.0 MB in the end (delta: 40.9 MB). Peak memory consumption was 41.9 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, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 1627]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 1627]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 1627]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 1627]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 1627]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 1627]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 1627]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 1627]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 1627]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 1627]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 1627]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 1627]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 1627]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 1627]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 1627]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 1627]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 1627]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 1627]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 1627]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 1627]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 1627]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 1627]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 1627]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 1627]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 1627]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 1627]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 1627]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 1627]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 1627]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 1627]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 1627]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 1627]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 1627]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 1627]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 1627]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 1627]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 1627]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 1627]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 1627]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 1627]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 1627]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 1627]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 1627]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 1627]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 1627]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 1627]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 1627]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 1627]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 1627]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 1627]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 1627]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 1627]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 1627]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 667]: 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, 352 locations, 54 error locations. Started 1 CEGAR loops. OverallTime: 10.2s, OverallIterations: 50, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 5.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 12629 SDtfs, 8539 SDslu, 14262 SDs, 0 SdLazy, 3757 SolverSat, 467 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 289 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=364occurred in iteration=4, InterpolantAutomatonStates: 233, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 50 MinimizatonAttempts, 674 StatesRemovedByMinimization, 28 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 1316 NumberOfCodeBlocks, 1316 NumberOfCodeBlocksAsserted, 50 NumberOfCheckSat, 1266 ConstructedInterpolants, 0 QuantifiedInterpolants, 3211 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 50 InterpolantComputations, 50 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 54 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-29 06:01:41,376 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab285d30-b7bd-40e2-8bbe-197cb190c154/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...