./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/locks/test_locks_11.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672a6c6e-3ed4-46ab-9ba3-19750bf55f87/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672a6c6e-3ed4-46ab-9ba3-19750bf55f87/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672a6c6e-3ed4-46ab-9ba3-19750bf55f87/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672a6c6e-3ed4-46ab-9ba3-19750bf55f87/bin/utaipan-WLngWcDbfI/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/locks/test_locks_11.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672a6c6e-3ed4-46ab-9ba3-19750bf55f87/bin/utaipan-WLngWcDbfI/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672a6c6e-3ed4-46ab-9ba3-19750bf55f87/bin/utaipan-WLngWcDbfI --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 a93221bc263791497331acd2a7a0150037c621aa ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:21:15,788 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:21:15,790 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:21:15,826 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:21:15,827 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:21:15,834 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:21:15,836 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:21:15,841 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:21:15,843 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:21:15,851 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:21:15,853 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:21:15,854 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:21:15,855 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:21:15,858 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:21:15,860 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:21:15,862 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:21:15,863 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:21:15,869 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:21:15,871 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:21:15,882 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:21:15,884 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:21:15,886 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:21:15,890 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:21:15,891 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:21:15,895 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:21:15,895 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:21:15,896 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:21:15,898 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:21:15,899 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:21:15,900 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:21:15,901 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:21:15,902 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:21:15,904 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:21:15,905 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:21:15,907 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:21:15,907 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:21:15,908 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:21:15,909 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:21:15,909 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:21:15,910 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:21:15,911 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:21:15,913 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672a6c6e-3ed4-46ab-9ba3-19750bf55f87/bin/utaipan-WLngWcDbfI/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-10-11 02:21:15,971 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:21:15,971 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:21:15,973 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:21:15,973 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:21:15,973 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:21:15,974 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:21:15,974 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:21:15,974 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:21:15,974 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:21:15,975 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:21:15,976 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:21:15,976 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:21:15,977 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:21:15,977 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:21:15,977 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:21:15,978 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 02:21:15,978 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 02:21:15,979 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:21:15,979 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:21:15,979 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-11 02:21:15,979 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:21:15,980 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:21:15,980 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:21:15,980 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-11 02:21:15,980 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-11 02:21:15,981 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-11 02:21:15,983 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:21:15,983 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:21:15,984 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:21:15,984 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:21:15,984 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:21:15,985 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:21:15,985 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:21:15,985 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:21:15,986 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:21:15,986 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:21:15,986 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:21:15,986 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:21:15,987 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:21:15,987 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_672a6c6e-3ed4-46ab-9ba3-19750bf55f87/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672a6c6e-3ed4-46ab-9ba3-19750bf55f87/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a93221bc263791497331acd2a7a0150037c621aa [2021-10-11 02:21:16,337 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:21:16,372 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:21:16,376 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:21:16,379 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:21:16,380 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:21:16,381 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672a6c6e-3ed4-46ab-9ba3-19750bf55f87/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/locks/test_locks_11.c [2021-10-11 02:21:16,446 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672a6c6e-3ed4-46ab-9ba3-19750bf55f87/bin/utaipan-WLngWcDbfI/data/5a5fb56ec/f9e78566b72f40b5a37d88333067bc96/FLAG0583dcd42 [2021-10-11 02:21:16,931 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:21:16,934 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672a6c6e-3ed4-46ab-9ba3-19750bf55f87/sv-benchmarks/c/locks/test_locks_11.c [2021-10-11 02:21:16,942 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672a6c6e-3ed4-46ab-9ba3-19750bf55f87/bin/utaipan-WLngWcDbfI/data/5a5fb56ec/f9e78566b72f40b5a37d88333067bc96/FLAG0583dcd42 [2021-10-11 02:21:17,275 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672a6c6e-3ed4-46ab-9ba3-19750bf55f87/bin/utaipan-WLngWcDbfI/data/5a5fb56ec/f9e78566b72f40b5a37d88333067bc96 [2021-10-11 02:21:17,278 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:21:17,279 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:21:17,300 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:21:17,300 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:21:17,304 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:21:17,306 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:21:17" (1/1) ... [2021-10-11 02:21:17,312 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ddd6da3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:17, skipping insertion in model container [2021-10-11 02:21:17,313 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:21:17" (1/1) ... [2021-10-11 02:21:17,320 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:21:17,348 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:21:17,596 WARN L226 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_672a6c6e-3ed4-46ab-9ba3-19750bf55f87/sv-benchmarks/c/locks/test_locks_11.c[4246,4259] [2021-10-11 02:21:17,600 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:21:17,615 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:21:17,652 WARN L226 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_672a6c6e-3ed4-46ab-9ba3-19750bf55f87/sv-benchmarks/c/locks/test_locks_11.c[4246,4259] [2021-10-11 02:21:17,658 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:21:17,675 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:21:17,675 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:17 WrapperNode [2021-10-11 02:21:17,675 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:21:17,677 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:21:17,677 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:21:17,677 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:21:17,684 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:17" (1/1) ... [2021-10-11 02:21:17,691 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:17" (1/1) ... [2021-10-11 02:21:17,716 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:21:17,717 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:21:17,717 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:21:17,717 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:21:17,727 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:17" (1/1) ... [2021-10-11 02:21:17,727 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:17" (1/1) ... [2021-10-11 02:21:17,730 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:17" (1/1) ... [2021-10-11 02:21:17,730 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:17" (1/1) ... [2021-10-11 02:21:17,734 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:17" (1/1) ... [2021-10-11 02:21:17,740 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:17" (1/1) ... [2021-10-11 02:21:17,742 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:17" (1/1) ... [2021-10-11 02:21:17,745 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:21:17,747 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:21:17,747 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:21:17,747 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:21:17,748 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:17" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672a6c6e-3ed4-46ab-9ba3-19750bf55f87/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:21:17,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:21:17,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:21:17,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:21:17,856 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:21:18,570 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:21:18,575 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-11 02:21:18,577 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:21:18 BoogieIcfgContainer [2021-10-11 02:21:18,578 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:21:18,582 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:21:18,582 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:21:18,586 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:21:18,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:21:17" (1/3) ... [2021-10-11 02:21:18,587 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cf43dd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:21:18, skipping insertion in model container [2021-10-11 02:21:18,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:17" (2/3) ... [2021-10-11 02:21:18,588 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cf43dd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:21:18, skipping insertion in model container [2021-10-11 02:21:18,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:21:18" (3/3) ... [2021-10-11 02:21:18,590 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_11.c [2021-10-11 02:21:18,604 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:21:18,608 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-10-11 02:21:18,617 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-11 02:21:18,637 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:21:18,637 INFO L378 AbstractCegarLoop]: Hoare is false [2021-10-11 02:21:18,638 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:21:18,639 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:21:18,639 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:21:18,639 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:21:18,639 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:21:18,640 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:21:18,654 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2021-10-11 02:21:18,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-11 02:21:18,661 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:18,662 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-11 02:21:18,662 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-10-11 02:21:18,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:18,669 INFO L82 PathProgramCache]: Analyzing trace with hash 7552401, now seen corresponding path program 1 times [2021-10-11 02:21:18,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:21:18,680 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765152664] [2021-10-11 02:21:18,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:21:18,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:18,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:21:18,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765152664] [2021-10-11 02:21:18,835 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:18,835 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:21:18,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136041767] [2021-10-11 02:21:18,840 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-10-11 02:21:18,841 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:21:18,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-11 02:21:18,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:21:18,859 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 2 states. [2021-10-11 02:21:18,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:18,874 INFO L93 Difference]: Finished difference Result 31 states and 52 transitions. [2021-10-11 02:21:18,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 02:21:18,875 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 4 [2021-10-11 02:21:18,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:18,885 INFO L225 Difference]: With dead ends: 31 [2021-10-11 02:21:18,886 INFO L226 Difference]: Without dead ends: 30 [2021-10-11 02:21:18,887 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:21:18,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-10-11 02:21:18,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-10-11 02:21:18,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-10-11 02:21:18,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 51 transitions. [2021-10-11 02:21:18,925 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 51 transitions. Word has length 4 [2021-10-11 02:21:18,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:18,926 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 51 transitions. [2021-10-11 02:21:18,926 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-10-11 02:21:18,926 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 51 transitions. [2021-10-11 02:21:18,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-11 02:21:18,927 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:18,927 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-11 02:21:18,927 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:21:18,927 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-10-11 02:21:18,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:18,929 INFO L82 PathProgramCache]: Analyzing trace with hash 227533950, now seen corresponding path program 1 times [2021-10-11 02:21:18,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:21:18,929 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939195593] [2021-10-11 02:21:18,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:21:18,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:18,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:21:18,996 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939195593] [2021-10-11 02:21:18,996 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:18,997 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-11 02:21:18,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24735900] [2021-10-11 02:21:19,000 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:21:19,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:21:19,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:21:19,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:21:19,004 INFO L87 Difference]: Start difference. First operand 30 states and 51 transitions. Second operand 3 states. [2021-10-11 02:21:19,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:19,011 INFO L93 Difference]: Finished difference Result 29 states and 50 transitions. [2021-10-11 02:21:19,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:21:19,011 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2021-10-11 02:21:19,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:19,012 INFO L225 Difference]: With dead ends: 29 [2021-10-11 02:21:19,012 INFO L226 Difference]: Without dead ends: 27 [2021-10-11 02:21:19,013 INFO L677 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 [2021-10-11 02:21:19,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-10-11 02:21:19,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-10-11 02:21:19,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-10-11 02:21:19,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 48 transitions. [2021-10-11 02:21:19,019 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 48 transitions. Word has length 5 [2021-10-11 02:21:19,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:19,019 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 48 transitions. [2021-10-11 02:21:19,019 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:21:19,020 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 48 transitions. [2021-10-11 02:21:19,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-11 02:21:19,020 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:19,020 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-11 02:21:19,021 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:21:19,021 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-10-11 02:21:19,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:19,022 INFO L82 PathProgramCache]: Analyzing trace with hash -1529800044, now seen corresponding path program 1 times [2021-10-11 02:21:19,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:21:19,023 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396667965] [2021-10-11 02:21:19,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:21:19,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:19,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:21:19,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396667965] [2021-10-11 02:21:19,114 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:19,114 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:21:19,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270272692] [2021-10-11 02:21:19,115 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:21:19,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:21:19,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:21:19,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:21:19,117 INFO L87 Difference]: Start difference. First operand 27 states and 48 transitions. Second operand 4 states. [2021-10-11 02:21:19,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:19,159 INFO L93 Difference]: Finished difference Result 51 states and 90 transitions. [2021-10-11 02:21:19,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:21:19,160 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2021-10-11 02:21:19,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:19,161 INFO L225 Difference]: With dead ends: 51 [2021-10-11 02:21:19,161 INFO L226 Difference]: Without dead ends: 51 [2021-10-11 02:21:19,162 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:21:19,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-10-11 02:21:19,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 27. [2021-10-11 02:21:19,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-10-11 02:21:19,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 47 transitions. [2021-10-11 02:21:19,167 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 47 transitions. Word has length 6 [2021-10-11 02:21:19,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:19,168 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 47 transitions. [2021-10-11 02:21:19,168 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:21:19,168 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 47 transitions. [2021-10-11 02:21:19,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-11 02:21:19,169 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:19,169 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:21:19,169 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:21:19,169 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-10-11 02:21:19,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:19,170 INFO L82 PathProgramCache]: Analyzing trace with hash -178948084, now seen corresponding path program 1 times [2021-10-11 02:21:19,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:21:19,171 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065695949] [2021-10-11 02:21:19,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:21:19,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:19,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:21:19,235 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065695949] [2021-10-11 02:21:19,235 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:19,235 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:21:19,235 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397959030] [2021-10-11 02:21:19,236 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:21:19,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:21:19,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:21:19,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:21:19,237 INFO L87 Difference]: Start difference. First operand 27 states and 47 transitions. Second operand 4 states. [2021-10-11 02:21:19,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:19,275 INFO L93 Difference]: Finished difference Result 49 states and 85 transitions. [2021-10-11 02:21:19,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:21:19,275 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2021-10-11 02:21:19,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:19,277 INFO L225 Difference]: With dead ends: 49 [2021-10-11 02:21:19,277 INFO L226 Difference]: Without dead ends: 49 [2021-10-11 02:21:19,277 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:21:19,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-10-11 02:21:19,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 27. [2021-10-11 02:21:19,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-10-11 02:21:19,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 46 transitions. [2021-10-11 02:21:19,282 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 46 transitions. Word has length 7 [2021-10-11 02:21:19,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:19,282 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 46 transitions. [2021-10-11 02:21:19,282 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:21:19,283 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 46 transitions. [2021-10-11 02:21:19,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-11 02:21:19,283 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:19,283 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:21:19,283 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 02:21:19,284 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-10-11 02:21:19,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:19,284 INFO L82 PathProgramCache]: Analyzing trace with hash -1252209943, now seen corresponding path program 1 times [2021-10-11 02:21:19,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:21:19,285 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452243800] [2021-10-11 02:21:19,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:21:19,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:19,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:21:19,343 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452243800] [2021-10-11 02:21:19,344 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:19,344 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:21:19,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957157122] [2021-10-11 02:21:19,345 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:21:19,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:21:19,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:21:19,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:21:19,347 INFO L87 Difference]: Start difference. First operand 27 states and 46 transitions. Second operand 4 states. [2021-10-11 02:21:19,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:19,385 INFO L93 Difference]: Finished difference Result 47 states and 80 transitions. [2021-10-11 02:21:19,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:21:19,385 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2021-10-11 02:21:19,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:19,390 INFO L225 Difference]: With dead ends: 47 [2021-10-11 02:21:19,390 INFO L226 Difference]: Without dead ends: 47 [2021-10-11 02:21:19,391 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:21:19,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-10-11 02:21:19,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 27. [2021-10-11 02:21:19,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-10-11 02:21:19,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 45 transitions. [2021-10-11 02:21:19,403 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 45 transitions. Word has length 8 [2021-10-11 02:21:19,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:19,404 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 45 transitions. [2021-10-11 02:21:19,404 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:21:19,404 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 45 transitions. [2021-10-11 02:21:19,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-11 02:21:19,405 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:19,405 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:21:19,405 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-11 02:21:19,407 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-10-11 02:21:19,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:19,408 INFO L82 PathProgramCache]: Analyzing trace with hash -163588863, now seen corresponding path program 1 times [2021-10-11 02:21:19,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:21:19,408 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656657048] [2021-10-11 02:21:19,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:21:19,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:19,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:21:19,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656657048] [2021-10-11 02:21:19,488 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:19,488 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:21:19,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974491080] [2021-10-11 02:21:19,489 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:21:19,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:21:19,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:21:19,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:21:19,492 INFO L87 Difference]: Start difference. First operand 27 states and 45 transitions. Second operand 4 states. [2021-10-11 02:21:19,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:19,525 INFO L93 Difference]: Finished difference Result 45 states and 75 transitions. [2021-10-11 02:21:19,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:21:19,531 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2021-10-11 02:21:19,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:19,531 INFO L225 Difference]: With dead ends: 45 [2021-10-11 02:21:19,534 INFO L226 Difference]: Without dead ends: 45 [2021-10-11 02:21:19,534 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:21:19,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-10-11 02:21:19,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 27. [2021-10-11 02:21:19,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-10-11 02:21:19,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 44 transitions. [2021-10-11 02:21:19,541 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 44 transitions. Word has length 9 [2021-10-11 02:21:19,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:19,546 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 44 transitions. [2021-10-11 02:21:19,546 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:21:19,546 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 44 transitions. [2021-10-11 02:21:19,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-11 02:21:19,547 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:19,547 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:21:19,547 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-11 02:21:19,547 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-10-11 02:21:19,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:19,548 INFO L82 PathProgramCache]: Analyzing trace with hash -776073410, now seen corresponding path program 1 times [2021-10-11 02:21:19,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:21:19,548 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405213832] [2021-10-11 02:21:19,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:21:19,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:19,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:21:19,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405213832] [2021-10-11 02:21:19,588 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:19,588 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:21:19,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115516570] [2021-10-11 02:21:19,589 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:21:19,589 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:21:19,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:21:19,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:21:19,590 INFO L87 Difference]: Start difference. First operand 27 states and 44 transitions. Second operand 4 states. [2021-10-11 02:21:19,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:19,607 INFO L93 Difference]: Finished difference Result 43 states and 70 transitions. [2021-10-11 02:21:19,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:21:19,608 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2021-10-11 02:21:19,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:19,609 INFO L225 Difference]: With dead ends: 43 [2021-10-11 02:21:19,609 INFO L226 Difference]: Without dead ends: 43 [2021-10-11 02:21:19,609 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:21:19,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-10-11 02:21:19,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 27. [2021-10-11 02:21:19,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-10-11 02:21:19,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 43 transitions. [2021-10-11 02:21:19,613 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 43 transitions. Word has length 10 [2021-10-11 02:21:19,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:19,614 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 43 transitions. [2021-10-11 02:21:19,614 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:21:19,614 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 43 transitions. [2021-10-11 02:21:19,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-11 02:21:19,615 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:19,615 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:21:19,615 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-11 02:21:19,615 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-10-11 02:21:19,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:19,616 INFO L82 PathProgramCache]: Analyzing trace with hash 1711742454, now seen corresponding path program 1 times [2021-10-11 02:21:19,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:21:19,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032400500] [2021-10-11 02:21:19,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:21:19,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:19,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:21:19,654 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032400500] [2021-10-11 02:21:19,655 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:19,655 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:21:19,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401897624] [2021-10-11 02:21:19,655 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:21:19,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:21:19,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:21:19,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:21:19,657 INFO L87 Difference]: Start difference. First operand 27 states and 43 transitions. Second operand 4 states. [2021-10-11 02:21:19,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:19,673 INFO L93 Difference]: Finished difference Result 41 states and 65 transitions. [2021-10-11 02:21:19,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:21:19,674 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2021-10-11 02:21:19,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:19,674 INFO L225 Difference]: With dead ends: 41 [2021-10-11 02:21:19,674 INFO L226 Difference]: Without dead ends: 41 [2021-10-11 02:21:19,675 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:21:19,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-10-11 02:21:19,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 27. [2021-10-11 02:21:19,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-10-11 02:21:19,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 42 transitions. [2021-10-11 02:21:19,678 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 42 transitions. Word has length 11 [2021-10-11 02:21:19,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:19,679 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 42 transitions. [2021-10-11 02:21:19,679 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:21:19,679 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 42 transitions. [2021-10-11 02:21:19,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-11 02:21:19,680 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:19,680 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:21:19,680 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-11 02:21:19,680 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-10-11 02:21:19,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:19,681 INFO L82 PathProgramCache]: Analyzing trace with hash 1524623251, now seen corresponding path program 1 times [2021-10-11 02:21:19,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:21:19,681 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035392542] [2021-10-11 02:21:19,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:21:19,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:19,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:21:19,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035392542] [2021-10-11 02:21:19,747 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:19,748 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:21:19,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355473878] [2021-10-11 02:21:19,748 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:21:19,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:21:19,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:21:19,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:21:19,751 INFO L87 Difference]: Start difference. First operand 27 states and 42 transitions. Second operand 4 states. [2021-10-11 02:21:19,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:19,777 INFO L93 Difference]: Finished difference Result 39 states and 60 transitions. [2021-10-11 02:21:19,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:21:19,778 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2021-10-11 02:21:19,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:19,779 INFO L225 Difference]: With dead ends: 39 [2021-10-11 02:21:19,779 INFO L226 Difference]: Without dead ends: 39 [2021-10-11 02:21:19,780 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:21:19,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-10-11 02:21:19,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 27. [2021-10-11 02:21:19,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-10-11 02:21:19,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 41 transitions. [2021-10-11 02:21:19,796 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 41 transitions. Word has length 12 [2021-10-11 02:21:19,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:19,796 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 41 transitions. [2021-10-11 02:21:19,797 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:21:19,797 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 41 transitions. [2021-10-11 02:21:19,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-11 02:21:19,798 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:19,798 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:21:19,798 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-11 02:21:19,799 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-10-11 02:21:19,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:19,799 INFO L82 PathProgramCache]: Analyzing trace with hash 18895595, now seen corresponding path program 1 times [2021-10-11 02:21:19,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:21:19,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32004107] [2021-10-11 02:21:19,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:21:19,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:19,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:21:19,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32004107] [2021-10-11 02:21:19,858 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:19,859 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:21:19,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080385839] [2021-10-11 02:21:19,860 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:21:19,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:21:19,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:21:19,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:21:19,861 INFO L87 Difference]: Start difference. First operand 27 states and 41 transitions. Second operand 4 states. [2021-10-11 02:21:19,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:19,885 INFO L93 Difference]: Finished difference Result 37 states and 55 transitions. [2021-10-11 02:21:19,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:21:19,885 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2021-10-11 02:21:19,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:19,888 INFO L225 Difference]: With dead ends: 37 [2021-10-11 02:21:19,888 INFO L226 Difference]: Without dead ends: 37 [2021-10-11 02:21:19,889 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:21:19,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-10-11 02:21:19,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 27. [2021-10-11 02:21:19,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-10-11 02:21:19,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 40 transitions. [2021-10-11 02:21:19,905 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 40 transitions. Word has length 13 [2021-10-11 02:21:19,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:19,905 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 40 transitions. [2021-10-11 02:21:19,906 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:21:19,906 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 40 transitions. [2021-10-11 02:21:19,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-11 02:21:19,906 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:19,906 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:21:19,907 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-11 02:21:19,907 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-10-11 02:21:19,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:19,908 INFO L82 PathProgramCache]: Analyzing trace with hash 585978856, now seen corresponding path program 1 times [2021-10-11 02:21:19,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:21:19,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826525699] [2021-10-11 02:21:19,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:21:19,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:19,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:21:19,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826525699] [2021-10-11 02:21:19,949 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:19,949 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:21:19,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877831651] [2021-10-11 02:21:19,949 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:21:19,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:21:19,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:21:19,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:21:19,951 INFO L87 Difference]: Start difference. First operand 27 states and 40 transitions. Second operand 4 states. [2021-10-11 02:21:19,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:19,970 INFO L93 Difference]: Finished difference Result 35 states and 50 transitions. [2021-10-11 02:21:19,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:21:19,970 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2021-10-11 02:21:19,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:19,971 INFO L225 Difference]: With dead ends: 35 [2021-10-11 02:21:19,971 INFO L226 Difference]: Without dead ends: 35 [2021-10-11 02:21:19,972 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:21:19,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-10-11 02:21:19,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 27. [2021-10-11 02:21:19,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-10-11 02:21:19,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 39 transitions. [2021-10-11 02:21:19,975 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 39 transitions. Word has length 14 [2021-10-11 02:21:19,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:19,980 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 39 transitions. [2021-10-11 02:21:19,980 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:21:19,980 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 39 transitions. [2021-10-11 02:21:19,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-11 02:21:19,981 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:19,981 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:21:19,981 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-11 02:21:19,981 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-10-11 02:21:19,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:19,982 INFO L82 PathProgramCache]: Analyzing trace with hash 985691104, now seen corresponding path program 1 times [2021-10-11 02:21:19,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:21:19,982 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178163229] [2021-10-11 02:21:19,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:21:19,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:20,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:21:20,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178163229] [2021-10-11 02:21:20,031 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:20,031 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:21:20,031 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295882360] [2021-10-11 02:21:20,031 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:21:20,031 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:21:20,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:21:20,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:21:20,032 INFO L87 Difference]: Start difference. First operand 27 states and 39 transitions. Second operand 4 states. [2021-10-11 02:21:20,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:20,049 INFO L93 Difference]: Finished difference Result 33 states and 45 transitions. [2021-10-11 02:21:20,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:21:20,049 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2021-10-11 02:21:20,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:20,050 INFO L225 Difference]: With dead ends: 33 [2021-10-11 02:21:20,050 INFO L226 Difference]: Without dead ends: 33 [2021-10-11 02:21:20,051 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:21:20,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-10-11 02:21:20,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 27. [2021-10-11 02:21:20,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-10-11 02:21:20,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 38 transitions. [2021-10-11 02:21:20,053 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 38 transitions. Word has length 15 [2021-10-11 02:21:20,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:20,053 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 38 transitions. [2021-10-11 02:21:20,053 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:21:20,053 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 38 transitions. [2021-10-11 02:21:20,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-11 02:21:20,054 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:20,054 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:21:20,054 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-11 02:21:20,055 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-10-11 02:21:20,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:20,055 INFO L82 PathProgramCache]: Analyzing trace with hash 491869245, now seen corresponding path program 1 times [2021-10-11 02:21:20,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:21:20,056 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915361587] [2021-10-11 02:21:20,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:21:20,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:20,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:21:20,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915361587] [2021-10-11 02:21:20,090 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:20,090 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:21:20,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137802195] [2021-10-11 02:21:20,091 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:21:20,091 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:21:20,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:21:20,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:21:20,092 INFO L87 Difference]: Start difference. First operand 27 states and 38 transitions. Second operand 4 states. [2021-10-11 02:21:20,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:20,107 INFO L93 Difference]: Finished difference Result 27 states and 38 transitions. [2021-10-11 02:21:20,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:21:20,108 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2021-10-11 02:21:20,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:20,108 INFO L225 Difference]: With dead ends: 27 [2021-10-11 02:21:20,109 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:21:20,109 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:21:20,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:21:20,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:21:20,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:21:20,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:21:20,110 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2021-10-11 02:21:20,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:20,110 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:21:20,110 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:21:20,110 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:21:20,110 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:21:20,111 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-11 02:21:20,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:21:20 BoogieIcfgContainer [2021-10-11 02:21:20,116 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:21:20,116 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:21:20,116 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:21:20,116 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:21:20,117 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:21:18" (3/4) ... [2021-10-11 02:21:20,120 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:21:20,133 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2021-10-11 02:21:20,134 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-10-11 02:21:20,134 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-10-11 02:21:20,135 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:21:20,202 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_672a6c6e-3ed4-46ab-9ba3-19750bf55f87/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:21:20,203 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:21:20,204 INFO L168 Benchmark]: Toolchain (without parser) took 2924.14 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 59.2 MB in the beginning and 55.7 MB in the end (delta: 3.6 MB). Peak memory consumption was 24.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:20,205 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 96.5 MB. Free memory was 75.4 MB in the beginning and 75.3 MB in the end (delta: 55.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:21:20,205 INFO L168 Benchmark]: CACSL2BoogieTranslator took 376.07 ms. Allocated memory is still 96.5 MB. Free memory was 59.0 MB in the beginning and 73.1 MB in the end (delta: -14.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:20,206 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.57 ms. Allocated memory is still 96.5 MB. Free memory was 73.1 MB in the beginning and 71.4 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:21:20,206 INFO L168 Benchmark]: Boogie Preprocessor took 28.92 ms. Allocated memory is still 96.5 MB. Free memory was 71.4 MB in the beginning and 69.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:20,207 INFO L168 Benchmark]: RCFGBuilder took 833.94 ms. Allocated memory is still 96.5 MB. Free memory was 69.9 MB in the beginning and 70.1 MB in the end (delta: -141.6 kB). Peak memory consumption was 38.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:20,207 INFO L168 Benchmark]: TraceAbstraction took 1533.77 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 69.6 MB in the beginning and 59.8 MB in the end (delta: 9.8 MB). Peak memory consumption was 32.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:20,208 INFO L168 Benchmark]: Witness Printer took 86.67 ms. Allocated memory is still 117.4 MB. Free memory was 59.8 MB in the beginning and 55.7 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:20,210 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 96.5 MB. Free memory was 75.4 MB in the beginning and 75.3 MB in the end (delta: 55.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 376.07 ms. Allocated memory is still 96.5 MB. Free memory was 59.0 MB in the beginning and 73.1 MB in the end (delta: -14.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 39.57 ms. Allocated memory is still 96.5 MB. Free memory was 73.1 MB in the beginning and 71.4 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 28.92 ms. Allocated memory is still 96.5 MB. Free memory was 71.4 MB in the beginning and 69.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 833.94 ms. Allocated memory is still 96.5 MB. Free memory was 69.9 MB in the beginning and 70.1 MB in the end (delta: -141.6 kB). Peak memory consumption was 38.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1533.77 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 69.6 MB in the beginning and 59.8 MB in the end (delta: 9.8 MB). Peak memory consumption was 32.5 MB. Max. memory is 16.1 GB. * Witness Printer took 86.67 ms. Allocated memory is still 117.4 MB. Free memory was 59.8 MB in the beginning and 55.7 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 177]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 6]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 31 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.4s, OverallIterations: 13, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 541 SDtfs, 419 SDslu, 647 SDs, 0 SdLazy, 99 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 47 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 13 MinimizatonAttempts, 150 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 130 NumberOfCodeBlocks, 130 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 117 ConstructedInterpolants, 0 QuantifiedInterpolants, 6107 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...