./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/psyco/psyco_io_1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8ebb83-b944-4edf-81dd-70f59c5eac6c/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8ebb83-b944-4edf-81dd-70f59c5eac6c/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8ebb83-b944-4edf-81dd-70f59c5eac6c/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8ebb83-b944-4edf-81dd-70f59c5eac6c/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/psyco/psyco_io_1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8ebb83-b944-4edf-81dd-70f59c5eac6c/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8ebb83-b944-4edf-81dd-70f59c5eac6c/bin/utaipan-TEXQjIfE4P --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 4f9f01bde8fda2c75630f127009f2a9b60883250862a9d96b52c34a46b69c1e5 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 23:19:15,946 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 23:19:15,948 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 23:19:15,991 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 23:19:15,991 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 23:19:15,993 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 23:19:15,996 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 23:19:15,999 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 23:19:16,002 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 23:19:16,003 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 23:19:16,005 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 23:19:16,007 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 23:19:16,008 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 23:19:16,014 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 23:19:16,016 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 23:19:16,021 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 23:19:16,023 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 23:19:16,030 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 23:19:16,034 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 23:19:16,040 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 23:19:16,046 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 23:19:16,048 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 23:19:16,052 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 23:19:16,054 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 23:19:16,071 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 23:19:16,074 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 23:19:16,074 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 23:19:16,076 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 23:19:16,078 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 23:19:16,080 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 23:19:16,081 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 23:19:16,082 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 23:19:16,085 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 23:19:16,087 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 23:19:16,089 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 23:19:16,089 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 23:19:16,090 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 23:19:16,090 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 23:19:16,091 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 23:19:16,092 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 23:19:16,093 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 23:19:16,094 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8ebb83-b944-4edf-81dd-70f59c5eac6c/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-20 23:19:16,150 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 23:19:16,150 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 23:19:16,151 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 23:19:16,152 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 23:19:16,153 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 23:19:16,153 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 23:19:16,153 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-20 23:19:16,154 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-20 23:19:16,154 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-20 23:19:16,154 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-20 23:19:16,156 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-20 23:19:16,156 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-20 23:19:16,156 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-20 23:19:16,157 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-20 23:19:16,157 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-20 23:19:16,157 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-20 23:19:16,158 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-20 23:19:16,158 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-20 23:19:16,159 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 23:19:16,160 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 23:19:16,160 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 23:19:16,160 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 23:19:16,160 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 23:19:16,161 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 23:19:16,161 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 23:19:16,161 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 23:19:16,163 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 23:19:16,164 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 23:19:16,164 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 23:19:16,164 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 23:19:16,165 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 23:19:16,165 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 23:19:16,166 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:19:16,166 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 23:19:16,166 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 23:19:16,167 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 23:19:16,167 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-20 23:19:16,167 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 23:19:16,167 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 23:19:16,168 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 23:19:16,168 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 23:19:16,168 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_9f8ebb83-b944-4edf-81dd-70f59c5eac6c/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8ebb83-b944-4edf-81dd-70f59c5eac6c/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4f9f01bde8fda2c75630f127009f2a9b60883250862a9d96b52c34a46b69c1e5 [2021-11-20 23:19:16,489 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 23:19:16,543 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 23:19:16,546 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 23:19:16,547 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 23:19:16,548 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 23:19:16,550 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8ebb83-b944-4edf-81dd-70f59c5eac6c/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/psyco/psyco_io_1.c [2021-11-20 23:19:16,640 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8ebb83-b944-4edf-81dd-70f59c5eac6c/bin/utaipan-TEXQjIfE4P/data/94f16fde0/12ad486a755249a388d4efa93b9067bb/FLAG52ce4af73 [2021-11-20 23:19:17,283 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 23:19:17,285 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8ebb83-b944-4edf-81dd-70f59c5eac6c/sv-benchmarks/c/psyco/psyco_io_1.c [2021-11-20 23:19:17,307 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8ebb83-b944-4edf-81dd-70f59c5eac6c/bin/utaipan-TEXQjIfE4P/data/94f16fde0/12ad486a755249a388d4efa93b9067bb/FLAG52ce4af73 [2021-11-20 23:19:17,595 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8ebb83-b944-4edf-81dd-70f59c5eac6c/bin/utaipan-TEXQjIfE4P/data/94f16fde0/12ad486a755249a388d4efa93b9067bb [2021-11-20 23:19:17,600 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 23:19:17,602 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 23:19:17,605 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 23:19:17,615 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 23:19:17,619 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 23:19:17,621 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:19:17" (1/1) ... [2021-11-20 23:19:17,622 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fd9ef60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:19:17, skipping insertion in model container [2021-11-20 23:19:17,623 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:19:17" (1/1) ... [2021-11-20 23:19:17,632 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 23:19:17,683 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 23:19:17,928 WARN L230 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_9f8ebb83-b944-4edf-81dd-70f59c5eac6c/sv-benchmarks/c/psyco/psyco_io_1.c[11478,11491] [2021-11-20 23:19:17,933 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:19:17,950 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 23:19:17,990 WARN L230 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_9f8ebb83-b944-4edf-81dd-70f59c5eac6c/sv-benchmarks/c/psyco/psyco_io_1.c[11478,11491] [2021-11-20 23:19:17,991 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:19:18,008 INFO L208 MainTranslator]: Completed translation [2021-11-20 23:19:18,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:19:18 WrapperNode [2021-11-20 23:19:18,009 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 23:19:18,011 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 23:19:18,011 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 23:19:18,011 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 23:19:18,019 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:19:18" (1/1) ... [2021-11-20 23:19:18,044 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:19:18" (1/1) ... [2021-11-20 23:19:18,088 INFO L137 Inliner]: procedures = 12, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 258 [2021-11-20 23:19:18,088 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 23:19:18,089 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 23:19:18,089 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 23:19:18,090 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 23:19:18,106 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:19:18" (1/1) ... [2021-11-20 23:19:18,107 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:19:18" (1/1) ... [2021-11-20 23:19:18,131 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:19:18" (1/1) ... [2021-11-20 23:19:18,131 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:19:18" (1/1) ... [2021-11-20 23:19:18,138 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:19:18" (1/1) ... [2021-11-20 23:19:18,161 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:19:18" (1/1) ... [2021-11-20 23:19:18,163 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:19:18" (1/1) ... [2021-11-20 23:19:18,167 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 23:19:18,168 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 23:19:18,168 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 23:19:18,169 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 23:19:18,170 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:19:18" (1/1) ... [2021-11-20 23:19:18,179 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:19:18,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8ebb83-b944-4edf-81dd-70f59c5eac6c/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:19:18,224 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8ebb83-b944-4edf-81dd-70f59c5eac6c/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 23:19:18,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8ebb83-b944-4edf-81dd-70f59c5eac6c/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 23:19:18,286 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 23:19:18,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 23:19:18,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 23:19:18,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 23:19:18,418 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 23:19:18,420 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 23:19:18,904 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 23:19:18,931 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 23:19:18,934 INFO L301 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-20 23:19:18,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:19:18 BoogieIcfgContainer [2021-11-20 23:19:18,937 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 23:19:18,942 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 23:19:18,942 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 23:19:18,947 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 23:19:18,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:19:17" (1/3) ... [2021-11-20 23:19:18,949 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c675585 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:19:18, skipping insertion in model container [2021-11-20 23:19:18,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:19:18" (2/3) ... [2021-11-20 23:19:18,950 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c675585 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:19:18, skipping insertion in model container [2021-11-20 23:19:18,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:19:18" (3/3) ... [2021-11-20 23:19:18,954 INFO L111 eAbstractionObserver]: Analyzing ICFG psyco_io_1.c [2021-11-20 23:19:18,961 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 23:19:18,961 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 23:19:19,040 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 23:19:19,052 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 23:19:19,052 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 23:19:19,078 INFO L276 IsEmpty]: Start isEmpty. Operand has 66 states, 64 states have (on average 1.953125) internal successors, (125), 65 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:19:19,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-20 23:19:19,102 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:19:19,103 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:19:19,103 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:19:19,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:19:19,111 INFO L85 PathProgramCache]: Analyzing trace with hash -162000591, now seen corresponding path program 1 times [2021-11-20 23:19:19,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:19:19,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845767568] [2021-11-20 23:19:19,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:19:19,125 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:19:19,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:19:19,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:19:19,423 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:19:19,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845767568] [2021-11-20 23:19:19,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845767568] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:19:19,425 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:19:19,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 23:19:19,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239479205] [2021-11-20 23:19:19,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:19:19,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-20 23:19:19,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:19:19,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-20 23:19:19,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 23:19:19,472 INFO L87 Difference]: Start difference. First operand has 66 states, 64 states have (on average 1.953125) internal successors, (125), 65 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:19:19,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:19:19,508 INFO L93 Difference]: Finished difference Result 127 states and 241 transitions. [2021-11-20 23:19:19,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-20 23:19:19,512 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-20 23:19:19,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:19:19,525 INFO L225 Difference]: With dead ends: 127 [2021-11-20 23:19:19,525 INFO L226 Difference]: Without dead ends: 56 [2021-11-20 23:19:19,529 INFO L932 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 [2021-11-20 23:19:19,534 INFO L933 BasicCegarLoop]: 96 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:19:19,536 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 96 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 23:19:19,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-11-20 23:19:19,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-11-20 23:19:19,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.5636363636363637) internal successors, (86), 55 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:19:19,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 86 transitions. [2021-11-20 23:19:19,586 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 86 transitions. Word has length 8 [2021-11-20 23:19:19,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:19:19,587 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 86 transitions. [2021-11-20 23:19:19,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:19:19,588 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 86 transitions. [2021-11-20 23:19:19,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-20 23:19:19,589 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:19:19,590 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:19:19,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 23:19:19,591 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:19:19,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:19:19,592 INFO L85 PathProgramCache]: Analyzing trace with hash -194557569, now seen corresponding path program 1 times [2021-11-20 23:19:19,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:19:19,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163942397] [2021-11-20 23:19:19,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:19:19,594 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:19:19,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:19:19,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:19:19,641 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:19:19,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163942397] [2021-11-20 23:19:19,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163942397] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:19:19,643 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:19:19,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 23:19:19,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346800648] [2021-11-20 23:19:19,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:19:19,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:19:19,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:19:19,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:19:19,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:19:19,647 INFO L87 Difference]: Start difference. First operand 56 states and 86 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:19:19,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:19:19,695 INFO L93 Difference]: Finished difference Result 114 states and 175 transitions. [2021-11-20 23:19:19,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:19:19,695 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-20 23:19:19,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:19:19,697 INFO L225 Difference]: With dead ends: 114 [2021-11-20 23:19:19,698 INFO L226 Difference]: Without dead ends: 59 [2021-11-20 23:19:19,699 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:19:19,701 INFO L933 BasicCegarLoop]: 84 mSDtfsCounter, 4 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:19:19,702 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 151 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 23:19:19,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-11-20 23:19:19,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2021-11-20 23:19:19,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.5344827586206897) internal successors, (89), 58 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:19:19,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 89 transitions. [2021-11-20 23:19:19,714 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 89 transitions. Word has length 9 [2021-11-20 23:19:19,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:19:19,715 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 89 transitions. [2021-11-20 23:19:19,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:19:19,715 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 89 transitions. [2021-11-20 23:19:19,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-20 23:19:19,717 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:19:19,717 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:19:19,717 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 23:19:19,718 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:19:19,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:19:19,719 INFO L85 PathProgramCache]: Analyzing trace with hash -694410156, now seen corresponding path program 1 times [2021-11-20 23:19:19,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:19:19,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767832553] [2021-11-20 23:19:19,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:19:19,720 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:19:19,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:19:19,800 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:19:19,801 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:19:19,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767832553] [2021-11-20 23:19:19,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767832553] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:19:19,802 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:19:19,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:19:19,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804113107] [2021-11-20 23:19:19,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:19:19,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:19:19,803 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:19:19,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:19:19,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:19:19,804 INFO L87 Difference]: Start difference. First operand 59 states and 89 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:19:19,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:19:19,876 INFO L93 Difference]: Finished difference Result 122 states and 184 transitions. [2021-11-20 23:19:19,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:19:19,877 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-20 23:19:19,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:19:19,879 INFO L225 Difference]: With dead ends: 122 [2021-11-20 23:19:19,881 INFO L226 Difference]: Without dead ends: 65 [2021-11-20 23:19:19,882 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:19:19,884 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 29 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:19:19,888 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 127 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 23:19:19,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-11-20 23:19:19,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 63. [2021-11-20 23:19:19,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.5) internal successors, (93), 62 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:19:19,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 93 transitions. [2021-11-20 23:19:19,914 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 93 transitions. Word has length 14 [2021-11-20 23:19:19,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:19:19,915 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 93 transitions. [2021-11-20 23:19:19,916 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:19:19,916 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 93 transitions. [2021-11-20 23:19:19,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-20 23:19:19,919 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:19:19,919 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:19:19,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 23:19:19,920 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:19:19,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:19:19,922 INFO L85 PathProgramCache]: Analyzing trace with hash 905287082, now seen corresponding path program 1 times [2021-11-20 23:19:19,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:19:19,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873307559] [2021-11-20 23:19:19,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:19:19,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:19:19,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:19:20,016 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:19:20,016 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:19:20,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873307559] [2021-11-20 23:19:20,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873307559] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:19:20,017 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:19:20,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:19:20,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929833907] [2021-11-20 23:19:20,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:19:20,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:19:20,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:19:20,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:19:20,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:19:20,021 INFO L87 Difference]: Start difference. First operand 63 states and 93 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:19:20,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:19:20,130 INFO L93 Difference]: Finished difference Result 181 states and 271 transitions. [2021-11-20 23:19:20,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:19:20,131 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-11-20 23:19:20,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:19:20,133 INFO L225 Difference]: With dead ends: 181 [2021-11-20 23:19:20,133 INFO L226 Difference]: Without dead ends: 116 [2021-11-20 23:19:20,134 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:19:20,136 INFO L933 BasicCegarLoop]: 117 mSDtfsCounter, 56 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:19:20,137 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 181 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 23:19:20,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-11-20 23:19:20,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 107. [2021-11-20 23:19:20,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 106 states have (on average 1.5) internal successors, (159), 106 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:19:20,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 159 transitions. [2021-11-20 23:19:20,169 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 159 transitions. Word has length 19 [2021-11-20 23:19:20,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:19:20,169 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 159 transitions. [2021-11-20 23:19:20,169 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:19:20,170 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 159 transitions. [2021-11-20 23:19:20,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-20 23:19:20,171 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:19:20,171 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:19:20,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-20 23:19:20,172 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:19:20,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:19:20,173 INFO L85 PathProgramCache]: Analyzing trace with hash 2500084, now seen corresponding path program 1 times [2021-11-20 23:19:20,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:19:20,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419165991] [2021-11-20 23:19:20,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:19:20,174 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:19:20,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:19:20,306 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 23:19:20,306 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:19:20,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419165991] [2021-11-20 23:19:20,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419165991] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:19:20,307 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:19:20,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:19:20,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545024952] [2021-11-20 23:19:20,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:19:20,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:19:20,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:19:20,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:19:20,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:19:20,310 INFO L87 Difference]: Start difference. First operand 107 states and 159 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:19:20,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:19:20,363 INFO L93 Difference]: Finished difference Result 175 states and 261 transitions. [2021-11-20 23:19:20,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:19:20,367 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-11-20 23:19:20,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:19:20,368 INFO L225 Difference]: With dead ends: 175 [2021-11-20 23:19:20,369 INFO L226 Difference]: Without dead ends: 70 [2021-11-20 23:19:20,370 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:19:20,371 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 30 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:19:20,372 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 87 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 23:19:20,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-11-20 23:19:20,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2021-11-20 23:19:20,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 1.391304347826087) internal successors, (96), 69 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:19:20,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 96 transitions. [2021-11-20 23:19:20,396 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 96 transitions. Word has length 26 [2021-11-20 23:19:20,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:19:20,397 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 96 transitions. [2021-11-20 23:19:20,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:19:20,398 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 96 transitions. [2021-11-20 23:19:20,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-20 23:19:20,404 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:19:20,405 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:19:20,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-20 23:19:20,405 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:19:20,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:19:20,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1609281601, now seen corresponding path program 1 times [2021-11-20 23:19:20,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:19:20,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013053106] [2021-11-20 23:19:20,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:19:20,407 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:19:20,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:19:20,540 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 23:19:20,541 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:19:20,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013053106] [2021-11-20 23:19:20,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013053106] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:19:20,542 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:19:20,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 23:19:20,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956616935] [2021-11-20 23:19:20,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:19:20,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 23:19:20,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:19:20,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 23:19:20,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 23:19:20,545 INFO L87 Difference]: Start difference. First operand 70 states and 96 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:19:20,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:19:20,602 INFO L93 Difference]: Finished difference Result 73 states and 99 transitions. [2021-11-20 23:19:20,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 23:19:20,603 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-11-20 23:19:20,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:19:20,603 INFO L225 Difference]: With dead ends: 73 [2021-11-20 23:19:20,604 INFO L226 Difference]: Without dead ends: 0 [2021-11-20 23:19:20,608 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:19:20,617 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 17 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:19:20,620 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 131 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 23:19:20,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-20 23:19:20,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-20 23:19:20,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:19:20,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-20 23:19:20,628 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 32 [2021-11-20 23:19:20,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:19:20,629 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-20 23:19:20,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:19:20,631 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-20 23:19:20,631 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-20 23:19:20,634 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-20 23:19:20,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-20 23:19:20,637 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-20 23:19:20,721 INFO L858 garLoopResultBuilder]: For program point L36(lines 36 51) no Hoare annotation was computed. [2021-11-20 23:19:20,721 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-20 23:19:20,721 INFO L858 garLoopResultBuilder]: For program point L38(lines 38 49) no Hoare annotation was computed. [2021-11-20 23:19:20,722 INFO L858 garLoopResultBuilder]: For program point L88(lines 88 103) no Hoare annotation was computed. [2021-11-20 23:19:20,723 INFO L858 garLoopResultBuilder]: For program point L55(lines 55 106) no Hoare annotation was computed. [2021-11-20 23:19:20,723 INFO L858 garLoopResultBuilder]: For program point L204(lines 204 219) no Hoare annotation was computed. [2021-11-20 23:19:20,723 INFO L858 garLoopResultBuilder]: For program point L72(lines 72 87) no Hoare annotation was computed. [2021-11-20 23:19:20,724 INFO L858 garLoopResultBuilder]: For program point L320(lines 320 335) no Hoare annotation was computed. [2021-11-20 23:19:20,725 INFO L858 garLoopResultBuilder]: For program point L188(lines 188 203) no Hoare annotation was computed. [2021-11-20 23:19:20,725 INFO L858 garLoopResultBuilder]: For program point L56(lines 56 71) no Hoare annotation was computed. [2021-11-20 23:19:20,725 INFO L854 garLoopResultBuilder]: At program point L337(lines 25 341) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~this_sink~0#1| 0))) (or (and .cse0 (= 2 |ULTIMATE.start_main_~q~0#1|)) (and (= 3 |ULTIMATE.start_main_~q~0#1|) (not .cse0)) (= |ULTIMATE.start_main_~q~0#1| 0))) [2021-11-20 23:19:20,726 INFO L858 garLoopResultBuilder]: For program point L304(lines 304 319) no Hoare annotation was computed. [2021-11-20 23:19:20,726 INFO L858 garLoopResultBuilder]: For program point L172(lines 172 187) no Hoare annotation was computed. [2021-11-20 23:19:20,726 INFO L858 garLoopResultBuilder]: For program point L288(lines 288 303) no Hoare annotation was computed. [2021-11-20 23:19:20,726 INFO L858 garLoopResultBuilder]: For program point L156(lines 156 171) no Hoare annotation was computed. [2021-11-20 23:19:20,727 INFO L858 garLoopResultBuilder]: For program point L90(lines 90 101) no Hoare annotation was computed. [2021-11-20 23:19:20,727 INFO L858 garLoopResultBuilder]: For program point L272(lines 272 287) no Hoare annotation was computed. [2021-11-20 23:19:20,727 INFO L858 garLoopResultBuilder]: For program point L206(lines 206 217) no Hoare annotation was computed. [2021-11-20 23:19:20,727 INFO L858 garLoopResultBuilder]: For program point L140(lines 140 155) no Hoare annotation was computed. [2021-11-20 23:19:20,728 INFO L858 garLoopResultBuilder]: For program point L107(lines 107 222) no Hoare annotation was computed. [2021-11-20 23:19:20,728 INFO L858 garLoopResultBuilder]: For program point L74(lines 74 85) no Hoare annotation was computed. [2021-11-20 23:19:20,728 INFO L858 garLoopResultBuilder]: For program point L322(lines 322 333) no Hoare annotation was computed. [2021-11-20 23:19:20,728 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-20 23:19:20,728 INFO L858 garLoopResultBuilder]: For program point L256(lines 256 271) no Hoare annotation was computed. [2021-11-20 23:19:20,729 INFO L858 garLoopResultBuilder]: For program point L223(lines 223 338) no Hoare annotation was computed. [2021-11-20 23:19:20,729 INFO L858 garLoopResultBuilder]: For program point L190(lines 190 201) no Hoare annotation was computed. [2021-11-20 23:19:20,729 INFO L858 garLoopResultBuilder]: For program point L124(lines 124 139) no Hoare annotation was computed. [2021-11-20 23:19:20,729 INFO L858 garLoopResultBuilder]: For program point L58(lines 58 69) no Hoare annotation was computed. [2021-11-20 23:19:20,730 INFO L854 garLoopResultBuilder]: At program point L25-2(lines 25 341) the Hoare annotation is: (and (= |ULTIMATE.start_main_~this_sink~0#1| 0) (= |ULTIMATE.start_main_~q~0#1| 0)) [2021-11-20 23:19:20,730 INFO L858 garLoopResultBuilder]: For program point L25-3(lines 25 341) no Hoare annotation was computed. [2021-11-20 23:19:20,730 INFO L858 garLoopResultBuilder]: For program point L306(lines 306 317) no Hoare annotation was computed. [2021-11-20 23:19:20,730 INFO L858 garLoopResultBuilder]: For program point L240(lines 240 255) no Hoare annotation was computed. [2021-11-20 23:19:20,731 INFO L858 garLoopResultBuilder]: For program point L174(lines 174 185) no Hoare annotation was computed. [2021-11-20 23:19:20,731 INFO L858 garLoopResultBuilder]: For program point L108(lines 108 123) no Hoare annotation was computed. [2021-11-20 23:19:20,731 INFO L858 garLoopResultBuilder]: For program point L42(lines 42 44) no Hoare annotation was computed. [2021-11-20 23:19:20,731 INFO L858 garLoopResultBuilder]: For program point L290(lines 290 301) no Hoare annotation was computed. [2021-11-20 23:19:20,732 INFO L858 garLoopResultBuilder]: For program point L224(lines 224 239) no Hoare annotation was computed. [2021-11-20 23:19:20,732 INFO L858 garLoopResultBuilder]: For program point L158(lines 158 169) no Hoare annotation was computed. [2021-11-20 23:19:20,732 INFO L858 garLoopResultBuilder]: For program point L274(lines 274 285) no Hoare annotation was computed. [2021-11-20 23:19:20,732 INFO L858 garLoopResultBuilder]: For program point L142(lines 142 153) no Hoare annotation was computed. [2021-11-20 23:19:20,732 INFO L858 garLoopResultBuilder]: For program point L258(lines 258 269) no Hoare annotation was computed. [2021-11-20 23:19:20,733 INFO L858 garLoopResultBuilder]: For program point L126(lines 126 137) no Hoare annotation was computed. [2021-11-20 23:19:20,733 INFO L858 garLoopResultBuilder]: For program point L242(lines 242 253) no Hoare annotation was computed. [2021-11-20 23:19:20,733 INFO L858 garLoopResultBuilder]: For program point L110(lines 110 121) no Hoare annotation was computed. [2021-11-20 23:19:20,733 INFO L858 garLoopResultBuilder]: For program point L226(lines 226 237) no Hoare annotation was computed. [2021-11-20 23:19:20,734 INFO L858 garLoopResultBuilder]: For program point L94(lines 94 96) no Hoare annotation was computed. [2021-11-20 23:19:20,734 INFO L858 garLoopResultBuilder]: For program point L210(lines 210 212) no Hoare annotation was computed. [2021-11-20 23:19:20,734 INFO L858 garLoopResultBuilder]: For program point L78(lines 78 80) no Hoare annotation was computed. [2021-11-20 23:19:20,734 INFO L858 garLoopResultBuilder]: For program point L326(lines 326 328) no Hoare annotation was computed. [2021-11-20 23:19:20,734 INFO L858 garLoopResultBuilder]: For program point L194(lines 194 196) no Hoare annotation was computed. [2021-11-20 23:19:20,735 INFO L858 garLoopResultBuilder]: For program point L62(lines 62 64) no Hoare annotation was computed. [2021-11-20 23:19:20,735 INFO L858 garLoopResultBuilder]: For program point L310(lines 310 312) no Hoare annotation was computed. [2021-11-20 23:19:20,736 INFO L858 garLoopResultBuilder]: For program point L178(lines 178 180) no Hoare annotation was computed. [2021-11-20 23:19:20,736 INFO L854 garLoopResultBuilder]: At program point L327(lines 15 346) the Hoare annotation is: false [2021-11-20 23:19:20,736 INFO L858 garLoopResultBuilder]: For program point L294(lines 294 296) no Hoare annotation was computed. [2021-11-20 23:19:20,736 INFO L858 garLoopResultBuilder]: For program point L162(lines 162 164) no Hoare annotation was computed. [2021-11-20 23:19:20,737 INFO L858 garLoopResultBuilder]: For program point L278(lines 278 280) no Hoare annotation was computed. [2021-11-20 23:19:20,737 INFO L858 garLoopResultBuilder]: For program point L146(lines 146 148) no Hoare annotation was computed. [2021-11-20 23:19:20,737 INFO L858 garLoopResultBuilder]: For program point L262(lines 262 264) no Hoare annotation was computed. [2021-11-20 23:19:20,738 INFO L858 garLoopResultBuilder]: For program point L130(lines 130 132) no Hoare annotation was computed. [2021-11-20 23:19:20,738 INFO L858 garLoopResultBuilder]: For program point L246(lines 246 248) no Hoare annotation was computed. [2021-11-20 23:19:20,739 INFO L858 garLoopResultBuilder]: For program point L114(lines 114 116) no Hoare annotation was computed. [2021-11-20 23:19:20,739 INFO L861 garLoopResultBuilder]: At program point L15(lines 15 346) the Hoare annotation is: true [2021-11-20 23:19:20,739 INFO L858 garLoopResultBuilder]: For program point L230(lines 230 232) no Hoare annotation was computed. [2021-11-20 23:19:20,740 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 345) no Hoare annotation was computed. [2021-11-20 23:19:20,740 INFO L858 garLoopResultBuilder]: For program point L35(lines 35 54) no Hoare annotation was computed. [2021-11-20 23:19:20,744 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2021-11-20 23:19:20,746 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-20 23:19:20,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 11:19:20 BoogieIcfgContainer [2021-11-20 23:19:20,768 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-20 23:19:20,777 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 23:19:20,777 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 23:19:20,781 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 23:19:20,781 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:19:18" (3/4) ... [2021-11-20 23:19:20,789 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-20 23:19:20,818 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-11-20 23:19:20,818 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-11-20 23:19:20,818 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-11-20 23:19:20,818 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-20 23:19:20,871 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8ebb83-b944-4edf-81dd-70f59c5eac6c/bin/utaipan-TEXQjIfE4P/witness.graphml [2021-11-20 23:19:20,872 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 23:19:20,874 INFO L158 Benchmark]: Toolchain (without parser) took 3271.77ms. Allocated memory was 92.3MB in the beginning and 113.2MB in the end (delta: 21.0MB). Free memory was 56.4MB in the beginning and 87.0MB in the end (delta: -30.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 23:19:20,875 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 92.3MB. Free memory is still 73.0MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 23:19:20,875 INFO L158 Benchmark]: CACSL2BoogieTranslator took 405.09ms. Allocated memory is still 92.3MB. Free memory was 56.2MB in the beginning and 66.8MB in the end (delta: -10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-20 23:19:20,876 INFO L158 Benchmark]: Boogie Procedure Inliner took 77.92ms. Allocated memory is still 92.3MB. Free memory was 66.8MB in the beginning and 64.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 23:19:20,876 INFO L158 Benchmark]: Boogie Preprocessor took 77.97ms. Allocated memory is still 92.3MB. Free memory was 64.8MB in the beginning and 63.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 23:19:20,877 INFO L158 Benchmark]: RCFGBuilder took 769.34ms. Allocated memory is still 92.3MB. Free memory was 63.2MB in the beginning and 48.2MB in the end (delta: 14.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-20 23:19:20,877 INFO L158 Benchmark]: TraceAbstraction took 1826.83ms. Allocated memory was 92.3MB in the beginning and 113.2MB in the end (delta: 21.0MB). Free memory was 47.8MB in the beginning and 35.5MB in the end (delta: 12.3MB). Peak memory consumption was 34.7MB. Max. memory is 16.1GB. [2021-11-20 23:19:20,878 INFO L158 Benchmark]: Witness Printer took 96.57ms. Allocated memory is still 113.2MB. Free memory was 89.1MB in the beginning and 87.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 23:19:20,882 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 92.3MB. Free memory is still 73.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 405.09ms. Allocated memory is still 92.3MB. Free memory was 56.2MB in the beginning and 66.8MB in the end (delta: -10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 77.92ms. Allocated memory is still 92.3MB. Free memory was 66.8MB in the beginning and 64.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 77.97ms. Allocated memory is still 92.3MB. Free memory was 64.8MB in the beginning and 63.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 769.34ms. Allocated memory is still 92.3MB. Free memory was 63.2MB in the beginning and 48.2MB in the end (delta: 14.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 1826.83ms. Allocated memory was 92.3MB in the beginning and 113.2MB in the end (delta: 21.0MB). Free memory was 47.8MB in the beginning and 35.5MB in the end (delta: 12.3MB). Peak memory consumption was 34.7MB. Max. memory is 16.1GB. * Witness Printer took 96.57ms. Allocated memory is still 113.2MB. Free memory was 89.1MB in the beginning and 87.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 345]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 66 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.7s, OverallIterations: 6, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 136 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 136 mSDsluCounter, 773 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 275 mSDsCounter, 36 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 89 IncrementalHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 36 mSolverCounterUnsat, 498 mSDtfsCounter, 89 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=107occurred in iteration=4, InterpolantAutomatonStates: 19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 11 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 11 NumberOfFragments, 28 HoareAnnotationTreeSize, 4 FomulaSimplifications, 7 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 23 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 108 NumberOfCodeBlocks, 108 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 102 ConstructedInterpolants, 0 QuantifiedInterpolants, 181 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 19/19 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: this_sink == 0 && q == 0 - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: ((this_sink == 0 && 2 == q) || (3 == q && !(this_sink == 0))) || q == 0 RESULT: Ultimate proved your program to be correct! [2021-11-20 23:19:20,950 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8ebb83-b944-4edf-81dd-70f59c5eac6c/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE