./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/locks/test_locks_11.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41cf0180-46b0-421d-93fe-7d9f0464b944/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41cf0180-46b0-421d-93fe-7d9f0464b944/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_41cf0180-46b0-421d-93fe-7d9f0464b944/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41cf0180-46b0-421d-93fe-7d9f0464b944/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/locks/test_locks_11.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41cf0180-46b0-421d-93fe-7d9f0464b944/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41cf0180-46b0-421d-93fe-7d9f0464b944/bin/utaipan-WLngWcDbfI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --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 02:24:58,887 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:24:58,890 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:24:58,954 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:24:58,955 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:24:58,956 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:24:58,958 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:24:58,961 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:24:58,963 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:24:58,965 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:24:58,966 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:24:58,968 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:24:58,968 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:24:58,970 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:24:58,971 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:24:58,973 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:24:58,974 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:24:58,980 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:24:58,985 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:24:58,992 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:24:58,997 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:24:59,003 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:24:59,005 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:24:59,007 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:24:59,015 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:24:59,016 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:24:59,018 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:24:59,019 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:24:59,021 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:24:59,023 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:24:59,023 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:24:59,024 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:24:59,027 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:24:59,028 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:24:59,030 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:24:59,030 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:24:59,031 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:24:59,031 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:24:59,032 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:24:59,033 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:24:59,033 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:24:59,036 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41cf0180-46b0-421d-93fe-7d9f0464b944/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:24:59,089 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:24:59,093 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:24:59,095 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:24:59,095 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:24:59,095 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:24:59,096 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:24:59,096 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:24:59,096 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:24:59,106 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:24:59,106 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:24:59,108 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:24:59,108 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:24:59,108 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:24:59,109 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:24:59,109 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:24:59,110 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:24:59,110 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:24:59,110 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:24:59,111 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:24:59,111 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:24:59,111 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:24:59,111 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:24:59,112 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:24:59,112 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:24:59,112 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:24:59,112 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:24:59,113 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:24:59,113 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:24:59,113 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:24:59,115 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:24:59,115 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:24:59,116 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:24:59,116 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:24:59,116 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:24:59,117 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:24:59,117 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:24:59,117 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:24:59,118 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:24:59,118 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:24:59,118 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_41cf0180-46b0-421d-93fe-7d9f0464b944/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41cf0180-46b0-421d-93fe-7d9f0464b944/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a93221bc263791497331acd2a7a0150037c621aa [2021-10-11 02:24:59,421 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:24:59,448 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:24:59,451 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:24:59,453 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:24:59,454 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:24:59,455 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41cf0180-46b0-421d-93fe-7d9f0464b944/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/locks/test_locks_11.c [2021-10-11 02:24:59,548 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41cf0180-46b0-421d-93fe-7d9f0464b944/bin/utaipan-WLngWcDbfI/data/79e6b5eb2/964cf3141df2457abcc945a51924641a/FLAG28d9fafb2 [2021-10-11 02:24:59,989 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:24:59,989 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41cf0180-46b0-421d-93fe-7d9f0464b944/sv-benchmarks/c/locks/test_locks_11.c [2021-10-11 02:25:00,001 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41cf0180-46b0-421d-93fe-7d9f0464b944/bin/utaipan-WLngWcDbfI/data/79e6b5eb2/964cf3141df2457abcc945a51924641a/FLAG28d9fafb2 [2021-10-11 02:25:00,365 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41cf0180-46b0-421d-93fe-7d9f0464b944/bin/utaipan-WLngWcDbfI/data/79e6b5eb2/964cf3141df2457abcc945a51924641a [2021-10-11 02:25:00,368 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:25:00,369 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:25:00,371 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:25:00,371 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:25:00,375 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:25:00,376 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:25:00" (1/1) ... [2021-10-11 02:25:00,378 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b0f80c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:00, skipping insertion in model container [2021-10-11 02:25:00,378 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:25:00" (1/1) ... [2021-10-11 02:25:00,386 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:25:00,405 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:25:00,604 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_41cf0180-46b0-421d-93fe-7d9f0464b944/sv-benchmarks/c/locks/test_locks_11.c[4246,4259] [2021-10-11 02:25:00,608 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:25:00,618 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:25:00,642 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_41cf0180-46b0-421d-93fe-7d9f0464b944/sv-benchmarks/c/locks/test_locks_11.c[4246,4259] [2021-10-11 02:25:00,644 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:25:00,658 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:25:00,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:00 WrapperNode [2021-10-11 02:25:00,659 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:25:00,660 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:25:00,660 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:25:00,660 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:25:00,669 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:00" (1/1) ... [2021-10-11 02:25:00,676 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:00" (1/1) ... [2021-10-11 02:25:00,700 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:25:00,701 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:25:00,701 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:25:00,701 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:25:00,710 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:00" (1/1) ... [2021-10-11 02:25:00,711 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:00" (1/1) ... [2021-10-11 02:25:00,713 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:00" (1/1) ... [2021-10-11 02:25:00,714 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:00" (1/1) ... [2021-10-11 02:25:00,720 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:00" (1/1) ... [2021-10-11 02:25:00,726 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:00" (1/1) ... [2021-10-11 02:25:00,728 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:00" (1/1) ... [2021-10-11 02:25:00,731 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:25:00,732 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:25:00,733 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:25:00,733 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:25:00,734 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:00" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41cf0180-46b0-421d-93fe-7d9f0464b944/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 02:25:00,827 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:25:00,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:25:00,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:25:00,828 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:25:01,660 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:25:01,660 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-11 02:25:01,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:25:01 BoogieIcfgContainer [2021-10-11 02:25:01,665 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:25:01,667 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:25:01,667 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:25:01,671 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:25:01,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:25:00" (1/3) ... [2021-10-11 02:25:01,672 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43796b28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:25:01, skipping insertion in model container [2021-10-11 02:25:01,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:00" (2/3) ... [2021-10-11 02:25:01,673 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43796b28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:25:01, skipping insertion in model container [2021-10-11 02:25:01,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:25:01" (3/3) ... [2021-10-11 02:25:01,675 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_11.c [2021-10-11 02:25:01,689 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:25:01,693 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:25:01,704 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:25:01,747 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:25:01,747 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:25:01,747 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:25:01,748 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:25:01,748 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:25:01,748 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:25:01,748 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:25:01,748 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:25:01,764 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2021-10-11 02:25:01,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-11 02:25:01,770 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:01,771 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-11 02:25:01,772 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:25:01,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:01,778 INFO L82 PathProgramCache]: Analyzing trace with hash -1558458986, now seen corresponding path program 1 times [2021-10-11 02:25:01,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:01,790 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10427019] [2021-10-11 02:25:01,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:01,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:01,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:25:01,976 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10427019] [2021-10-11 02:25:01,977 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:25:01,977 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:25:01,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535054514] [2021-10-11 02:25:01,982 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:25:01,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:01,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:25:01,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:25:01,998 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 4 states. [2021-10-11 02:25:02,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:02,041 INFO L93 Difference]: Finished difference Result 62 states and 105 transitions. [2021-10-11 02:25:02,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:25:02,043 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2021-10-11 02:25:02,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:02,052 INFO L225 Difference]: With dead ends: 62 [2021-10-11 02:25:02,053 INFO L226 Difference]: Without dead ends: 51 [2021-10-11 02:25:02,055 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 02:25:02,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-10-11 02:25:02,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 27. [2021-10-11 02:25:02,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-10-11 02:25:02,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 47 transitions. [2021-10-11 02:25:02,088 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 47 transitions. Word has length 6 [2021-10-11 02:25:02,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:02,089 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 47 transitions. [2021-10-11 02:25:02,089 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:25:02,089 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 47 transitions. [2021-10-11 02:25:02,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-11 02:25:02,090 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:02,090 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:25:02,090 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:25:02,091 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:25:02,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:02,091 INFO L82 PathProgramCache]: Analyzing trace with hash -1067375286, now seen corresponding path program 1 times [2021-10-11 02:25:02,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:02,092 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921083705] [2021-10-11 02:25:02,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:02,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:02,180 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 02:25:02,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921083705] [2021-10-11 02:25:02,181 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:25:02,181 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:25:02,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946909141] [2021-10-11 02:25:02,183 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:25:02,184 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:02,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:25:02,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:25:02,185 INFO L87 Difference]: Start difference. First operand 27 states and 47 transitions. Second operand 4 states. [2021-10-11 02:25:02,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:02,227 INFO L93 Difference]: Finished difference Result 51 states and 87 transitions. [2021-10-11 02:25:02,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:25:02,228 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2021-10-11 02:25:02,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:02,233 INFO L225 Difference]: With dead ends: 51 [2021-10-11 02:25:02,234 INFO L226 Difference]: Without dead ends: 49 [2021-10-11 02:25:02,235 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 02:25:02,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-10-11 02:25:02,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 27. [2021-10-11 02:25:02,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-10-11 02:25:02,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 46 transitions. [2021-10-11 02:25:02,250 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 46 transitions. Word has length 7 [2021-10-11 02:25:02,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:02,250 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 46 transitions. [2021-10-11 02:25:02,251 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:25:02,251 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 46 transitions. [2021-10-11 02:25:02,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-11 02:25:02,252 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:02,252 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:25:02,252 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:25:02,252 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:25:02,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:02,253 INFO L82 PathProgramCache]: Analyzing trace with hash 1271317867, now seen corresponding path program 1 times [2021-10-11 02:25:02,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:02,255 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515705646] [2021-10-11 02:25:02,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:02,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:02,364 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 02:25:02,364 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515705646] [2021-10-11 02:25:02,365 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:25:02,365 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:25:02,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684720992] [2021-10-11 02:25:02,365 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:25:02,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:02,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:25:02,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:25:02,369 INFO L87 Difference]: Start difference. First operand 27 states and 46 transitions. Second operand 4 states. [2021-10-11 02:25:02,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:02,411 INFO L93 Difference]: Finished difference Result 49 states and 82 transitions. [2021-10-11 02:25:02,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:25:02,412 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2021-10-11 02:25:02,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:02,413 INFO L225 Difference]: With dead ends: 49 [2021-10-11 02:25:02,413 INFO L226 Difference]: Without dead ends: 47 [2021-10-11 02:25:02,414 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 02:25:02,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-10-11 02:25:02,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 27. [2021-10-11 02:25:02,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-10-11 02:25:02,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 45 transitions. [2021-10-11 02:25:02,419 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 45 transitions. Word has length 8 [2021-10-11 02:25:02,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:02,419 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 45 transitions. [2021-10-11 02:25:02,419 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:25:02,419 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 45 transitions. [2021-10-11 02:25:02,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-11 02:25:02,420 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:02,420 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:25:02,420 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:25:02,421 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:25:02,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:02,421 INFO L82 PathProgramCache]: Analyzing trace with hash 756361919, now seen corresponding path program 1 times [2021-10-11 02:25:02,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:02,422 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790018375] [2021-10-11 02:25:02,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:02,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:02,514 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 02:25:02,515 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790018375] [2021-10-11 02:25:02,515 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:25:02,515 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:25:02,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751004459] [2021-10-11 02:25:02,516 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:25:02,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:02,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:25:02,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:25:02,518 INFO L87 Difference]: Start difference. First operand 27 states and 45 transitions. Second operand 4 states. [2021-10-11 02:25:02,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:02,568 INFO L93 Difference]: Finished difference Result 47 states and 77 transitions. [2021-10-11 02:25:02,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:25:02,569 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2021-10-11 02:25:02,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:02,572 INFO L225 Difference]: With dead ends: 47 [2021-10-11 02:25:02,572 INFO L226 Difference]: Without dead ends: 45 [2021-10-11 02:25:02,574 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 02:25:02,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-10-11 02:25:02,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 27. [2021-10-11 02:25:02,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-10-11 02:25:02,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 44 transitions. [2021-10-11 02:25:02,585 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 44 transitions. Word has length 9 [2021-10-11 02:25:02,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:02,586 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 44 transitions. [2021-10-11 02:25:02,586 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:25:02,586 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 44 transitions. [2021-10-11 02:25:02,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-11 02:25:02,587 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:02,587 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:25:02,587 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 02:25:02,588 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:25:02,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:02,590 INFO L82 PathProgramCache]: Analyzing trace with hash 1972597056, now seen corresponding path program 1 times [2021-10-11 02:25:02,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:02,590 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006104849] [2021-10-11 02:25:02,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:02,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:02,665 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 02:25:02,665 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006104849] [2021-10-11 02:25:02,666 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:25:02,666 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:25:02,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423774946] [2021-10-11 02:25:02,667 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:25:02,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:02,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:25:02,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:25:02,669 INFO L87 Difference]: Start difference. First operand 27 states and 44 transitions. Second operand 4 states. [2021-10-11 02:25:02,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:02,719 INFO L93 Difference]: Finished difference Result 45 states and 72 transitions. [2021-10-11 02:25:02,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:25:02,719 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2021-10-11 02:25:02,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:02,720 INFO L225 Difference]: With dead ends: 45 [2021-10-11 02:25:02,720 INFO L226 Difference]: Without dead ends: 43 [2021-10-11 02:25:02,721 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 02:25:02,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-10-11 02:25:02,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 27. [2021-10-11 02:25:02,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-10-11 02:25:02,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 43 transitions. [2021-10-11 02:25:02,725 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 43 transitions. Word has length 10 [2021-10-11 02:25:02,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:02,725 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 43 transitions. [2021-10-11 02:25:02,725 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:25:02,726 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 43 transitions. [2021-10-11 02:25:02,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-11 02:25:02,728 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:02,729 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:25:02,729 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-11 02:25:02,729 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:25:02,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:02,730 INFO L82 PathProgramCache]: Analyzing trace with hash 1021180980, now seen corresponding path program 1 times [2021-10-11 02:25:02,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:02,730 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689210547] [2021-10-11 02:25:02,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:02,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:02,808 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 02:25:02,808 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689210547] [2021-10-11 02:25:02,808 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:25:02,809 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:25:02,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601967683] [2021-10-11 02:25:02,809 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:25:02,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:02,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:25:02,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:25:02,810 INFO L87 Difference]: Start difference. First operand 27 states and 43 transitions. Second operand 4 states. [2021-10-11 02:25:02,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:02,838 INFO L93 Difference]: Finished difference Result 43 states and 67 transitions. [2021-10-11 02:25:02,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:25:02,839 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2021-10-11 02:25:02,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:02,840 INFO L225 Difference]: With dead ends: 43 [2021-10-11 02:25:02,841 INFO L226 Difference]: Without dead ends: 41 [2021-10-11 02:25:02,841 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 02:25:02,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-10-11 02:25:02,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 27. [2021-10-11 02:25:02,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-10-11 02:25:02,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 42 transitions. [2021-10-11 02:25:02,849 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 42 transitions. Word has length 11 [2021-10-11 02:25:02,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:02,854 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 42 transitions. [2021-10-11 02:25:02,854 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:25:02,854 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 42 transitions. [2021-10-11 02:25:02,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-11 02:25:02,856 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:02,856 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:25:02,857 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-11 02:25:02,857 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:25:02,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:02,859 INFO L82 PathProgramCache]: Analyzing trace with hash 1592054037, now seen corresponding path program 1 times [2021-10-11 02:25:02,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:02,859 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336213621] [2021-10-11 02:25:02,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:02,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:02,923 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 02:25:02,924 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336213621] [2021-10-11 02:25:02,924 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:25:02,924 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:25:02,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954668924] [2021-10-11 02:25:02,925 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:25:02,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:02,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:25:02,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:25:02,928 INFO L87 Difference]: Start difference. First operand 27 states and 42 transitions. Second operand 4 states. [2021-10-11 02:25:02,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:02,964 INFO L93 Difference]: Finished difference Result 41 states and 62 transitions. [2021-10-11 02:25:02,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:25:02,965 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2021-10-11 02:25:02,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:02,966 INFO L225 Difference]: With dead ends: 41 [2021-10-11 02:25:02,967 INFO L226 Difference]: Without dead ends: 39 [2021-10-11 02:25:02,968 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 02:25:02,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-10-11 02:25:02,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 27. [2021-10-11 02:25:02,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-10-11 02:25:02,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 41 transitions. [2021-10-11 02:25:02,975 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 41 transitions. Word has length 12 [2021-10-11 02:25:02,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:02,976 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 41 transitions. [2021-10-11 02:25:02,976 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:25:02,976 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 41 transitions. [2021-10-11 02:25:02,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-11 02:25:02,978 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:02,978 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:25:02,978 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-11 02:25:02,979 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:25:02,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:02,980 INFO L82 PathProgramCache]: Analyzing trace with hash 2109249961, now seen corresponding path program 1 times [2021-10-11 02:25:02,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:02,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823667248] [2021-10-11 02:25:02,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:02,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:03,042 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 02:25:03,042 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823667248] [2021-10-11 02:25:03,042 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:25:03,043 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:25:03,043 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182645959] [2021-10-11 02:25:03,043 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:25:03,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:03,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:25:03,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:25:03,044 INFO L87 Difference]: Start difference. First operand 27 states and 41 transitions. Second operand 4 states. [2021-10-11 02:25:03,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:03,066 INFO L93 Difference]: Finished difference Result 39 states and 57 transitions. [2021-10-11 02:25:03,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:25:03,067 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2021-10-11 02:25:03,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:03,068 INFO L225 Difference]: With dead ends: 39 [2021-10-11 02:25:03,068 INFO L226 Difference]: Without dead ends: 37 [2021-10-11 02:25:03,068 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 02:25:03,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-10-11 02:25:03,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 27. [2021-10-11 02:25:03,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-10-11 02:25:03,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 40 transitions. [2021-10-11 02:25:03,072 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 40 transitions. Word has length 13 [2021-10-11 02:25:03,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:03,072 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 40 transitions. [2021-10-11 02:25:03,073 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:25:03,073 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 40 transitions. [2021-10-11 02:25:03,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-11 02:25:03,074 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:03,074 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:25:03,074 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-11 02:25:03,074 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:25:03,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:03,075 INFO L82 PathProgramCache]: Analyzing trace with hash 962454762, now seen corresponding path program 1 times [2021-10-11 02:25:03,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:03,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154621584] [2021-10-11 02:25:03,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:03,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:03,131 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 02:25:03,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154621584] [2021-10-11 02:25:03,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:25:03,136 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:25:03,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329794571] [2021-10-11 02:25:03,137 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:25:03,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:03,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:25:03,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:25:03,139 INFO L87 Difference]: Start difference. First operand 27 states and 40 transitions. Second operand 4 states. [2021-10-11 02:25:03,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:03,175 INFO L93 Difference]: Finished difference Result 37 states and 52 transitions. [2021-10-11 02:25:03,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:25:03,176 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2021-10-11 02:25:03,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:03,177 INFO L225 Difference]: With dead ends: 37 [2021-10-11 02:25:03,179 INFO L226 Difference]: Without dead ends: 35 [2021-10-11 02:25:03,180 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 02:25:03,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-10-11 02:25:03,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 27. [2021-10-11 02:25:03,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-10-11 02:25:03,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 39 transitions. [2021-10-11 02:25:03,186 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 39 transitions. Word has length 14 [2021-10-11 02:25:03,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:03,187 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 39 transitions. [2021-10-11 02:25:03,187 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:25:03,187 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 39 transitions. [2021-10-11 02:25:03,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-11 02:25:03,189 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:03,189 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:25:03,189 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-11 02:25:03,190 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:25:03,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:03,190 INFO L82 PathProgramCache]: Analyzing trace with hash -228457698, now seen corresponding path program 1 times [2021-10-11 02:25:03,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:03,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357547753] [2021-10-11 02:25:03,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:03,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:03,260 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 02:25:03,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357547753] [2021-10-11 02:25:03,260 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:25:03,261 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:25:03,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219263227] [2021-10-11 02:25:03,261 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:25:03,261 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:03,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:25:03,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:25:03,262 INFO L87 Difference]: Start difference. First operand 27 states and 39 transitions. Second operand 4 states. [2021-10-11 02:25:03,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:03,285 INFO L93 Difference]: Finished difference Result 35 states and 47 transitions. [2021-10-11 02:25:03,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:25:03,286 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2021-10-11 02:25:03,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:03,287 INFO L225 Difference]: With dead ends: 35 [2021-10-11 02:25:03,287 INFO L226 Difference]: Without dead ends: 33 [2021-10-11 02:25:03,287 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 02:25:03,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-10-11 02:25:03,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 27. [2021-10-11 02:25:03,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-10-11 02:25:03,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 38 transitions. [2021-10-11 02:25:03,301 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 38 transitions. Word has length 15 [2021-10-11 02:25:03,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:03,301 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 38 transitions. [2021-10-11 02:25:03,302 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:25:03,302 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 38 transitions. [2021-10-11 02:25:03,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-11 02:25:03,303 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:03,303 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:25:03,303 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-11 02:25:03,303 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:25:03,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:03,304 INFO L82 PathProgramCache]: Analyzing trace with hash 1507962047, now seen corresponding path program 1 times [2021-10-11 02:25:03,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:03,305 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960943150] [2021-10-11 02:25:03,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:03,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:03,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:25:03,346 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960943150] [2021-10-11 02:25:03,346 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:25:03,346 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:25:03,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267753811] [2021-10-11 02:25:03,347 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:25:03,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:03,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:25:03,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:25:03,348 INFO L87 Difference]: Start difference. First operand 27 states and 38 transitions. Second operand 4 states. [2021-10-11 02:25:03,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:03,365 INFO L93 Difference]: Finished difference Result 29 states and 40 transitions. [2021-10-11 02:25:03,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:25:03,366 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2021-10-11 02:25:03,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:03,366 INFO L225 Difference]: With dead ends: 29 [2021-10-11 02:25:03,366 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:25:03,367 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 02:25:03,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:25:03,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:25:03,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:25:03,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:25:03,368 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2021-10-11 02:25:03,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:03,368 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:25:03,368 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:25:03,368 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:25:03,369 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:25:03,369 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-11 02:25:03,371 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:25:03,385 INFO L262 CegarLoopResult]: For program point L159-1(lines 44 174) no Hoare annotation was computed. [2021-10-11 02:25:03,385 INFO L262 CegarLoopResult]: For program point L135(line 135) no Hoare annotation was computed. [2021-10-11 02:25:03,385 INFO L262 CegarLoopResult]: For program point L160(line 160) no Hoare annotation was computed. [2021-10-11 02:25:03,386 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:25:03,386 INFO L262 CegarLoopResult]: For program point L119-1(lines 44 174) no Hoare annotation was computed. [2021-10-11 02:25:03,386 INFO L262 CegarLoopResult]: For program point L144-1(lines 44 174) no Hoare annotation was computed. [2021-10-11 02:25:03,386 INFO L265 CegarLoopResult]: At program point L169-1(lines 44 174) the Hoare annotation is: true [2021-10-11 02:25:03,386 INFO L262 CegarLoopResult]: For program point L120(line 120) no Hoare annotation was computed. [2021-10-11 02:25:03,386 INFO L265 CegarLoopResult]: At program point L178(lines 6 179) the Hoare annotation is: true [2021-10-11 02:25:03,387 INFO L262 CegarLoopResult]: For program point L145(line 145) no Hoare annotation was computed. [2021-10-11 02:25:03,387 INFO L262 CegarLoopResult]: For program point L46(lines 46 48) no Hoare annotation was computed. [2021-10-11 02:25:03,387 INFO L262 CegarLoopResult]: For program point L170(line 170) no Hoare annotation was computed. [2021-10-11 02:25:03,387 INFO L258 CegarLoopResult]: At program point L170-1(lines 7 179) the Hoare annotation is: false [2021-10-11 02:25:03,387 INFO L262 CegarLoopResult]: For program point L129-1(lines 44 174) no Hoare annotation was computed. [2021-10-11 02:25:03,387 INFO L262 CegarLoopResult]: For program point L154-1(lines 44 174) no Hoare annotation was computed. [2021-10-11 02:25:03,387 INFO L262 CegarLoopResult]: For program point L113-1(lines 44 174) no Hoare annotation was computed. [2021-10-11 02:25:03,388 INFO L262 CegarLoopResult]: For program point L130(line 130) no Hoare annotation was computed. [2021-10-11 02:25:03,388 INFO L262 CegarLoopResult]: For program point L155(line 155) no Hoare annotation was computed. [2021-10-11 02:25:03,388 INFO L262 CegarLoopResult]: For program point L139-1(lines 44 174) no Hoare annotation was computed. [2021-10-11 02:25:03,388 INFO L262 CegarLoopResult]: For program point L164-1(lines 44 174) no Hoare annotation was computed. [2021-10-11 02:25:03,388 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 177) no Hoare annotation was computed. [2021-10-11 02:25:03,388 INFO L262 CegarLoopResult]: For program point L140(line 140) no Hoare annotation was computed. [2021-10-11 02:25:03,388 INFO L262 CegarLoopResult]: For program point L165(line 165) no Hoare annotation was computed. [2021-10-11 02:25:03,389 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:25:03,389 INFO L262 CegarLoopResult]: For program point L124-1(lines 44 174) no Hoare annotation was computed. [2021-10-11 02:25:03,389 INFO L262 CegarLoopResult]: For program point L149-1(lines 44 174) no Hoare annotation was computed. [2021-10-11 02:25:03,389 INFO L262 CegarLoopResult]: For program point L125(line 125) no Hoare annotation was computed. [2021-10-11 02:25:03,389 INFO L262 CegarLoopResult]: For program point L150(line 150) no Hoare annotation was computed. [2021-10-11 02:25:03,389 INFO L265 CegarLoopResult]: At program point L175(lines 7 179) the Hoare annotation is: true [2021-10-11 02:25:03,389 INFO L262 CegarLoopResult]: For program point L134-1(lines 44 174) no Hoare annotation was computed. [2021-10-11 02:25:03,400 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:25:03 BoogieIcfgContainer [2021-10-11 02:25:03,400 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:25:03,400 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:25:03,400 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:25:03,401 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:25:03,401 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:25:01" (3/4) ... [2021-10-11 02:25:03,405 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:25:03,417 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2021-10-11 02:25:03,418 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-10-11 02:25:03,419 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-10-11 02:25:03,419 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:25:03,479 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41cf0180-46b0-421d-93fe-7d9f0464b944/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:25:03,479 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:25:03,481 INFO L168 Benchmark]: Toolchain (without parser) took 3110.05 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 62.5 MB in the beginning and 70.8 MB in the end (delta: -8.3 MB). Peak memory consumption was 13.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:25:03,481 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 96.5 MB. Free memory is still 52.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:25:03,482 INFO L168 Benchmark]: CACSL2BoogieTranslator took 288.00 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 62.2 MB in the beginning and 91.6 MB in the end (delta: -29.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:25:03,482 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.37 ms. Allocated memory is still 117.4 MB. Free memory was 91.6 MB in the beginning and 90.1 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:25:03,482 INFO L168 Benchmark]: Boogie Preprocessor took 30.58 ms. Allocated memory is still 117.4 MB. Free memory was 90.1 MB in the beginning and 88.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:25:03,483 INFO L168 Benchmark]: RCFGBuilder took 932.79 ms. Allocated memory is still 117.4 MB. Free memory was 88.5 MB in the beginning and 91.7 MB in the end (delta: -3.2 MB). Peak memory consumption was 44.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:25:03,483 INFO L168 Benchmark]: TraceAbstraction took 1732.71 ms. Allocated memory is still 117.4 MB. Free memory was 91.0 MB in the beginning and 75.0 MB in the end (delta: 16.0 MB). Peak memory consumption was 15.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:25:03,484 INFO L168 Benchmark]: Witness Printer took 78.53 ms. Allocated memory is still 117.4 MB. Free memory was 75.0 MB in the beginning and 70.8 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:25:03,486 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 96.5 MB. Free memory is still 52.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 288.00 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 62.2 MB in the beginning and 91.6 MB in the end (delta: -29.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 40.37 ms. Allocated memory is still 117.4 MB. Free memory was 91.6 MB in the beginning and 90.1 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.58 ms. Allocated memory is still 117.4 MB. Free memory was 90.1 MB in the beginning and 88.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 932.79 ms. Allocated memory is still 117.4 MB. Free memory was 88.5 MB in the beginning and 91.7 MB in the end (delta: -3.2 MB). Peak memory consumption was 44.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1732.71 ms. Allocated memory is still 117.4 MB. Free memory was 91.0 MB in the beginning and 75.0 MB in the end (delta: 16.0 MB). Peak memory consumption was 15.7 MB. Max. memory is 16.1 GB. * Witness Printer took 78.53 ms. Allocated memory is still 117.4 MB. Free memory was 75.0 MB in the beginning and 70.8 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]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 6]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 44]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.6s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 445 SDtfs, 376 SDslu, 653 SDs, 0 SdLazy, 99 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred 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, 11 MinimizatonAttempts, 150 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 9 NumberOfFragments, 4 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 121 NumberOfCodeBlocks, 121 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 110 ConstructedInterpolants, 0 QuantifiedInterpolants, 6050 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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...