./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label15.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-vcloud-master/worker/run_dir_16fc8da4-bb28-42d4-850a-6918552ec263/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_16fc8da4-bb28-42d4-850a-6918552ec263/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_16fc8da4-bb28-42d4-850a-6918552ec263/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_16fc8da4-bb28-42d4-850a-6918552ec263/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label15.c -s /tmp/vcloud-vcloud-master/worker/run_dir_16fc8da4-bb28-42d4-850a-6918552ec263/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_16fc8da4-bb28-42d4-850a-6918552ec263/bin/utaipan --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 9fd1c199175ae89d653ba6bc804fff94514799a0 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 07:02:52,993 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 07:02:52,994 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 07:02:53,022 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 07:02:53,022 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 07:02:53,023 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 07:02:53,025 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 07:02:53,037 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 07:02:53,038 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 07:02:53,039 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 07:02:53,040 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 07:02:53,041 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 07:02:53,041 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 07:02:53,042 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 07:02:53,043 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 07:02:53,044 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 07:02:53,044 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 07:02:53,045 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 07:02:53,047 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 07:02:53,048 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 07:02:53,051 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 07:02:53,052 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 07:02:53,053 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 07:02:53,054 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 07:02:53,056 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 07:02:53,056 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 07:02:53,057 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 07:02:53,057 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 07:02:53,058 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 07:02:53,059 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 07:02:53,059 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 07:02:53,060 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 07:02:53,060 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 07:02:53,061 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 07:02:53,062 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 07:02:53,062 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 07:02:53,063 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 07:02:53,063 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 07:02:53,063 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 07:02:53,064 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 07:02:53,065 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 07:02:53,065 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_16fc8da4-bb28-42d4-850a-6918552ec263/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 07:02:53,081 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 07:02:53,081 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 07:02:53,082 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 07:02:53,082 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 07:02:53,082 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 07:02:53,082 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 07:02:53,082 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 07:02:53,083 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 07:02:53,083 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 07:02:53,083 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 07:02:53,083 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 07:02:53,083 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 07:02:53,083 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 07:02:53,083 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 07:02:53,083 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 07:02:53,084 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 07:02:53,084 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 07:02:53,084 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 07:02:53,084 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 07:02:53,084 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 07:02:53,084 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 07:02:53,085 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 07:02:53,085 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 07:02:53,085 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 07:02:53,085 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 07:02:53,085 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 07:02:53,085 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 07:02:53,085 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 07:02:53,085 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 07:02:53,086 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 07:02:53,086 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 07:02:53,086 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 07:02:53,086 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 07:02:53,086 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 07:02:53,086 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 07:02:53,086 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 07:02:53,086 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 07:02:53,087 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 07:02:53,087 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 07:02:53,087 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-vcloud-master/worker/run_dir_16fc8da4-bb28-42d4-850a-6918552ec263/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_16fc8da4-bb28-42d4-850a-6918552ec263/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9fd1c199175ae89d653ba6bc804fff94514799a0 [2020-12-09 07:02:53,263 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 07:02:53,282 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 07:02:53,284 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 07:02:53,285 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 07:02:53,286 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 07:02:53,286 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_16fc8da4-bb28-42d4-850a-6918552ec263/bin/utaipan/../../sv-benchmarks/c/eca-rers2012/Problem02_label15.c [2020-12-09 07:02:53,324 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_16fc8da4-bb28-42d4-850a-6918552ec263/bin/utaipan/data/19282d392/9e058cc75e304138b5ad5181851babc1/FLAG60e00e7b5 [2020-12-09 07:02:53,719 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 07:02:53,720 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_16fc8da4-bb28-42d4-850a-6918552ec263/sv-benchmarks/c/eca-rers2012/Problem02_label15.c [2020-12-09 07:02:53,729 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_16fc8da4-bb28-42d4-850a-6918552ec263/bin/utaipan/data/19282d392/9e058cc75e304138b5ad5181851babc1/FLAG60e00e7b5 [2020-12-09 07:02:54,094 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_16fc8da4-bb28-42d4-850a-6918552ec263/bin/utaipan/data/19282d392/9e058cc75e304138b5ad5181851babc1 [2020-12-09 07:02:54,096 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 07:02:54,097 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 07:02:54,099 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 07:02:54,099 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 07:02:54,102 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 07:02:54,103 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:02:54" (1/1) ... [2020-12-09 07:02:54,105 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@497b5a5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:02:54, skipping insertion in model container [2020-12-09 07:02:54,105 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:02:54" (1/1) ... [2020-12-09 07:02:54,122 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 07:02:54,191 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 07:02:54,407 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_16fc8da4-bb28-42d4-850a-6918552ec263/sv-benchmarks/c/eca-rers2012/Problem02_label15.c[20193,20206] [2020-12-09 07:02:54,422 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 07:02:54,429 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 07:02:54,494 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_16fc8da4-bb28-42d4-850a-6918552ec263/sv-benchmarks/c/eca-rers2012/Problem02_label15.c[20193,20206] [2020-12-09 07:02:54,500 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 07:02:54,511 INFO L208 MainTranslator]: Completed translation [2020-12-09 07:02:54,511 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:02:54 WrapperNode [2020-12-09 07:02:54,511 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 07:02:54,512 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 07:02:54,512 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 07:02:54,512 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 07:02:54,519 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:02:54" (1/1) ... [2020-12-09 07:02:54,534 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:02:54" (1/1) ... [2020-12-09 07:02:54,568 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 07:02:54,569 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 07:02:54,569 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 07:02:54,569 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 07:02:54,575 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:02:54" (1/1) ... [2020-12-09 07:02:54,575 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:02:54" (1/1) ... [2020-12-09 07:02:54,579 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:02:54" (1/1) ... [2020-12-09 07:02:54,579 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:02:54" (1/1) ... [2020-12-09 07:02:54,593 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:02:54" (1/1) ... [2020-12-09 07:02:54,601 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:02:54" (1/1) ... [2020-12-09 07:02:54,605 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:02:54" (1/1) ... [2020-12-09 07:02:54,611 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 07:02:54,612 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 07:02:54,612 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 07:02:54,612 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 07:02:54,613 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:02:54" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_16fc8da4-bb28-42d4-850a-6918552ec263/bin/utaipan/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 [2020-12-09 07:02:54,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 07:02:54,681 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 07:02:54,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 07:02:54,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 07:02:55,892 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 07:02:55,892 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-09 07:02:55,894 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:02:55 BoogieIcfgContainer [2020-12-09 07:02:55,894 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 07:02:55,896 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 07:02:55,896 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 07:02:55,898 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 07:02:55,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 07:02:54" (1/3) ... [2020-12-09 07:02:55,899 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e1fa375 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:02:55, skipping insertion in model container [2020-12-09 07:02:55,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:02:54" (2/3) ... [2020-12-09 07:02:55,900 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e1fa375 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:02:55, skipping insertion in model container [2020-12-09 07:02:55,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:02:55" (3/3) ... [2020-12-09 07:02:55,901 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem02_label15.c [2020-12-09 07:02:55,915 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 07:02:55,918 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 07:02:55,928 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 07:02:55,950 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 07:02:55,951 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 07:02:55,951 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 07:02:55,951 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 07:02:55,951 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 07:02:55,951 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 07:02:55,951 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 07:02:55,951 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 07:02:55,965 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states. [2020-12-09 07:02:55,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-09 07:02:55,973 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:02:55,974 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:02:55,974 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:02:55,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:02:55,979 INFO L82 PathProgramCache]: Analyzing trace with hash 925960975, now seen corresponding path program 1 times [2020-12-09 07:02:55,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:02:55,988 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798039378] [2020-12-09 07:02:55,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:02:56,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:02:56,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:02:56,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798039378] [2020-12-09 07:02:56,263 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:02:56,263 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 07:02:56,264 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320657987] [2020-12-09 07:02:56,267 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:02:56,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:02:56,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:02:56,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:02:56,278 INFO L87 Difference]: Start difference. First operand 85 states. Second operand 3 states. [2020-12-09 07:02:56,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:02:56,626 INFO L93 Difference]: Finished difference Result 251 states and 482 transitions. [2020-12-09 07:02:56,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:02:56,628 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-12-09 07:02:56,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:02:56,637 INFO L225 Difference]: With dead ends: 251 [2020-12-09 07:02:56,637 INFO L226 Difference]: Without dead ends: 163 [2020-12-09 07:02:56,640 INFO L677 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 [2020-12-09 07:02:56,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-12-09 07:02:56,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2020-12-09 07:02:56,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-12-09 07:02:56,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 298 transitions. [2020-12-09 07:02:56,688 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 298 transitions. Word has length 80 [2020-12-09 07:02:56,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:02:56,689 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 298 transitions. [2020-12-09 07:02:56,689 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:02:56,689 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 298 transitions. [2020-12-09 07:02:56,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-12-09 07:02:56,693 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:02:56,693 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:02:56,693 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 07:02:56,694 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:02:56,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:02:56,694 INFO L82 PathProgramCache]: Analyzing trace with hash 1028681732, now seen corresponding path program 1 times [2020-12-09 07:02:56,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:02:56,695 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955812755] [2020-12-09 07:02:56,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:02:56,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:02:56,761 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:02:56,761 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955812755] [2020-12-09 07:02:56,761 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:02:56,761 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 07:02:56,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436764797] [2020-12-09 07:02:56,762 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:02:56,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:02:56,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:02:56,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:02:56,764 INFO L87 Difference]: Start difference. First operand 163 states and 298 transitions. Second operand 3 states. [2020-12-09 07:02:57,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:02:57,048 INFO L93 Difference]: Finished difference Result 485 states and 891 transitions. [2020-12-09 07:02:57,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:02:57,048 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 84 [2020-12-09 07:02:57,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:02:57,052 INFO L225 Difference]: With dead ends: 485 [2020-12-09 07:02:57,052 INFO L226 Difference]: Without dead ends: 323 [2020-12-09 07:02:57,053 INFO L677 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 [2020-12-09 07:02:57,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-12-09 07:02:57,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2020-12-09 07:02:57,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-12-09 07:02:57,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 488 transitions. [2020-12-09 07:02:57,070 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 488 transitions. Word has length 84 [2020-12-09 07:02:57,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:02:57,070 INFO L481 AbstractCegarLoop]: Abstraction has 323 states and 488 transitions. [2020-12-09 07:02:57,070 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:02:57,070 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 488 transitions. [2020-12-09 07:02:57,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-12-09 07:02:57,073 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:02:57,074 INFO L422 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:02:57,074 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 07:02:57,074 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:02:57,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:02:57,075 INFO L82 PathProgramCache]: Analyzing trace with hash 2137931613, now seen corresponding path program 1 times [2020-12-09 07:02:57,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:02:57,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498821908] [2020-12-09 07:02:57,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:02:57,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:02:57,134 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:02:57,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498821908] [2020-12-09 07:02:57,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1450558716] [2020-12-09 07:02:57,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_16fc8da4-bb28-42d4-850a-6918552ec263/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 07:02:57,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:02:57,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 07:02:57,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:02:57,280 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-12-09 07:02:57,280 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 07:02:57,354 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-12-09 07:02:57,354 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 07:02:57,354 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [3] total 4 [2020-12-09 07:02:57,354 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638670995] [2020-12-09 07:02:57,355 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:02:57,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:02:57,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:02:57,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 07:02:57,356 INFO L87 Difference]: Start difference. First operand 323 states and 488 transitions. Second operand 3 states. [2020-12-09 07:02:57,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:02:57,616 INFO L93 Difference]: Finished difference Result 565 states and 880 transitions. [2020-12-09 07:02:57,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:02:57,617 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 89 [2020-12-09 07:02:57,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:02:57,620 INFO L225 Difference]: With dead ends: 565 [2020-12-09 07:02:57,620 INFO L226 Difference]: Without dead ends: 563 [2020-12-09 07:02:57,620 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 07:02:57,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2020-12-09 07:02:57,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 403. [2020-12-09 07:02:57,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2020-12-09 07:02:57,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 643 transitions. [2020-12-09 07:02:57,636 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 643 transitions. Word has length 89 [2020-12-09 07:02:57,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:02:57,637 INFO L481 AbstractCegarLoop]: Abstraction has 403 states and 643 transitions. [2020-12-09 07:02:57,637 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:02:57,637 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 643 transitions. [2020-12-09 07:02:57,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-12-09 07:02:57,638 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:02:57,638 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:02:57,839 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-12-09 07:02:57,840 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:02:57,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:02:57,840 INFO L82 PathProgramCache]: Analyzing trace with hash -1427736233, now seen corresponding path program 1 times [2020-12-09 07:02:57,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:02:57,841 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612528805] [2020-12-09 07:02:57,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:02:57,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:02:57,891 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:02:57,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612528805] [2020-12-09 07:02:57,891 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:02:57,891 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 07:02:57,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199822605] [2020-12-09 07:02:57,892 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:02:57,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:02:57,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:02:57,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:02:57,892 INFO L87 Difference]: Start difference. First operand 403 states and 643 transitions. Second operand 3 states. [2020-12-09 07:02:58,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:02:58,061 INFO L93 Difference]: Finished difference Result 805 states and 1285 transitions. [2020-12-09 07:02:58,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:02:58,061 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 91 [2020-12-09 07:02:58,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:02:58,063 INFO L225 Difference]: With dead ends: 805 [2020-12-09 07:02:58,063 INFO L226 Difference]: Without dead ends: 403 [2020-12-09 07:02:58,065 INFO L677 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 [2020-12-09 07:02:58,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2020-12-09 07:02:58,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 403. [2020-12-09 07:02:58,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2020-12-09 07:02:58,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 588 transitions. [2020-12-09 07:02:58,080 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 588 transitions. Word has length 91 [2020-12-09 07:02:58,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:02:58,080 INFO L481 AbstractCegarLoop]: Abstraction has 403 states and 588 transitions. [2020-12-09 07:02:58,080 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:02:58,080 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 588 transitions. [2020-12-09 07:02:58,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-09 07:02:58,082 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:02:58,082 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:02:58,082 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 07:02:58,082 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:02:58,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:02:58,083 INFO L82 PathProgramCache]: Analyzing trace with hash -440293285, now seen corresponding path program 1 times [2020-12-09 07:02:58,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:02:58,083 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084372442] [2020-12-09 07:02:58,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:02:58,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:02:58,140 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-09 07:02:58,140 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084372442] [2020-12-09 07:02:58,140 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:02:58,141 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 07:02:58,141 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014977383] [2020-12-09 07:02:58,141 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:02:58,141 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:02:58,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:02:58,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:02:58,142 INFO L87 Difference]: Start difference. First operand 403 states and 588 transitions. Second operand 3 states. [2020-12-09 07:02:58,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:02:58,376 INFO L93 Difference]: Finished difference Result 885 states and 1350 transitions. [2020-12-09 07:02:58,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:02:58,377 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 111 [2020-12-09 07:02:58,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:02:58,380 INFO L225 Difference]: With dead ends: 885 [2020-12-09 07:02:58,380 INFO L226 Difference]: Without dead ends: 563 [2020-12-09 07:02:58,380 INFO L677 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 [2020-12-09 07:02:58,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2020-12-09 07:02:58,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 563. [2020-12-09 07:02:58,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 563 states. [2020-12-09 07:02:58,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 798 transitions. [2020-12-09 07:02:58,393 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 798 transitions. Word has length 111 [2020-12-09 07:02:58,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:02:58,393 INFO L481 AbstractCegarLoop]: Abstraction has 563 states and 798 transitions. [2020-12-09 07:02:58,393 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:02:58,393 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 798 transitions. [2020-12-09 07:02:58,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-12-09 07:02:58,395 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:02:58,395 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:02:58,395 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-09 07:02:58,395 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:02:58,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:02:58,396 INFO L82 PathProgramCache]: Analyzing trace with hash -1423411985, now seen corresponding path program 1 times [2020-12-09 07:02:58,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:02:58,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658069039] [2020-12-09 07:02:58,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:02:58,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:02:58,448 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2020-12-09 07:02:58,449 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658069039] [2020-12-09 07:02:58,449 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1564619504] [2020-12-09 07:02:58,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_16fc8da4-bb28-42d4-850a-6918552ec263/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 07:02:58,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:02:58,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 07:02:58,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:02:58,610 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-12-09 07:02:58,610 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 07:02:58,685 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-12-09 07:02:58,685 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 07:02:58,685 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 5 [2020-12-09 07:02:58,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762502349] [2020-12-09 07:02:58,686 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:02:58,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:02:58,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:02:58,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 07:02:58,686 INFO L87 Difference]: Start difference. First operand 563 states and 798 transitions. Second operand 3 states. [2020-12-09 07:02:58,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:02:58,957 INFO L93 Difference]: Finished difference Result 1365 states and 1995 transitions. [2020-12-09 07:02:58,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:02:58,957 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 133 [2020-12-09 07:02:58,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:02:58,961 INFO L225 Difference]: With dead ends: 1365 [2020-12-09 07:02:58,961 INFO L226 Difference]: Without dead ends: 883 [2020-12-09 07:02:58,962 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 263 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 07:02:58,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2020-12-09 07:02:58,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 883. [2020-12-09 07:02:58,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 883 states. [2020-12-09 07:02:58,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1183 transitions. [2020-12-09 07:02:58,979 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1183 transitions. Word has length 133 [2020-12-09 07:02:58,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:02:58,979 INFO L481 AbstractCegarLoop]: Abstraction has 883 states and 1183 transitions. [2020-12-09 07:02:58,979 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:02:58,979 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1183 transitions. [2020-12-09 07:02:58,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-12-09 07:02:58,981 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:02:58,981 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:02:59,181 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 07:02:59,182 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:02:59,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:02:59,182 INFO L82 PathProgramCache]: Analyzing trace with hash -1142798327, now seen corresponding path program 1 times [2020-12-09 07:02:59,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:02:59,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833429375] [2020-12-09 07:02:59,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:02:59,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:02:59,256 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-12-09 07:02:59,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833429375] [2020-12-09 07:02:59,257 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:02:59,257 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 07:02:59,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380798551] [2020-12-09 07:02:59,257 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 07:02:59,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:02:59,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 07:02:59,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 07:02:59,258 INFO L87 Difference]: Start difference. First operand 883 states and 1183 transitions. Second operand 5 states. [2020-12-09 07:02:59,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:02:59,788 INFO L93 Difference]: Finished difference Result 1961 states and 2591 transitions. [2020-12-09 07:02:59,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 07:02:59,788 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 135 [2020-12-09 07:02:59,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:02:59,793 INFO L225 Difference]: With dead ends: 1961 [2020-12-09 07:02:59,794 INFO L226 Difference]: Without dead ends: 993 [2020-12-09 07:02:59,795 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-09 07:02:59,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 993 states. [2020-12-09 07:02:59,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 993 to 883. [2020-12-09 07:02:59,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 883 states. [2020-12-09 07:02:59,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1099 transitions. [2020-12-09 07:02:59,812 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1099 transitions. Word has length 135 [2020-12-09 07:02:59,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:02:59,812 INFO L481 AbstractCegarLoop]: Abstraction has 883 states and 1099 transitions. [2020-12-09 07:02:59,812 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 07:02:59,812 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1099 transitions. [2020-12-09 07:02:59,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-12-09 07:02:59,814 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:02:59,814 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:02:59,814 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-09 07:02:59,814 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:02:59,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:02:59,814 INFO L82 PathProgramCache]: Analyzing trace with hash 2089857491, now seen corresponding path program 1 times [2020-12-09 07:02:59,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:02:59,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770144241] [2020-12-09 07:02:59,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:02:59,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:02:59,910 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 64 proven. 8 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-12-09 07:02:59,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770144241] [2020-12-09 07:02:59,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1952019917] [2020-12-09 07:02:59,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_16fc8da4-bb28-42d4-850a-6918552ec263/bin/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 07:02:59,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:02:59,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 07:02:59,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:03:00,073 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-12-09 07:03:00,073 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 07:03:00,154 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-12-09 07:03:00,154 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 07:03:00,154 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2020-12-09 07:03:00,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894439655] [2020-12-09 07:03:00,155 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:03:00,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:03:00,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:03:00,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-09 07:03:00,156 INFO L87 Difference]: Start difference. First operand 883 states and 1099 transitions. Second operand 3 states. [2020-12-09 07:03:00,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:03:00,350 INFO L93 Difference]: Finished difference Result 1683 states and 2112 transitions. [2020-12-09 07:03:00,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:03:00,351 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 139 [2020-12-09 07:03:00,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:03:00,351 INFO L225 Difference]: With dead ends: 1683 [2020-12-09 07:03:00,351 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 07:03:00,353 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 275 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-09 07:03:00,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 07:03:00,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 07:03:00,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 07:03:00,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 07:03:00,353 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 139 [2020-12-09 07:03:00,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:03:00,353 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 07:03:00,353 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:03:00,353 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 07:03:00,353 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 07:03:00,554 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 07:03:00,557 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 07:03:00,653 INFO L262 CegarLoopResult]: For program point L301(lines 301 423) no Hoare annotation was computed. [2020-12-09 07:03:00,654 INFO L262 CegarLoopResult]: For program point L235(lines 235 423) no Hoare annotation was computed. [2020-12-09 07:03:00,654 INFO L262 CegarLoopResult]: For program point L169(lines 169 423) no Hoare annotation was computed. [2020-12-09 07:03:00,654 INFO L262 CegarLoopResult]: For program point L303(lines 303 423) no Hoare annotation was computed. [2020-12-09 07:03:00,654 INFO L262 CegarLoopResult]: For program point L105(lines 105 423) no Hoare annotation was computed. [2020-12-09 07:03:00,654 INFO L262 CegarLoopResult]: For program point L568-1(lines 39 608) no Hoare annotation was computed. [2020-12-09 07:03:00,654 INFO L262 CegarLoopResult]: For program point L40(lines 40 423) no Hoare annotation was computed. [2020-12-09 07:03:00,654 INFO L262 CegarLoopResult]: For program point L371(lines 371 423) no Hoare annotation was computed. [2020-12-09 07:03:00,654 INFO L262 CegarLoopResult]: For program point L571-1(lines 39 608) no Hoare annotation was computed. [2020-12-09 07:03:00,654 INFO L262 CegarLoopResult]: For program point L307(lines 307 423) no Hoare annotation was computed. [2020-12-09 07:03:00,654 INFO L262 CegarLoopResult]: For program point L175(lines 175 423) no Hoare annotation was computed. [2020-12-09 07:03:00,654 INFO L262 CegarLoopResult]: For program point L109(lines 109 423) no Hoare annotation was computed. [2020-12-09 07:03:00,654 INFO L262 CegarLoopResult]: For program point L572(line 572) no Hoare annotation was computed. [2020-12-09 07:03:00,654 INFO L262 CegarLoopResult]: For program point L242(lines 242 423) no Hoare annotation was computed. [2020-12-09 07:03:00,654 INFO L262 CegarLoopResult]: For program point L45(lines 45 423) no Hoare annotation was computed. [2020-12-09 07:03:00,654 INFO L262 CegarLoopResult]: For program point L244(lines 244 423) no Hoare annotation was computed. [2020-12-09 07:03:00,654 INFO L262 CegarLoopResult]: For program point L179(lines 179 423) no Hoare annotation was computed. [2020-12-09 07:03:00,655 INFO L262 CegarLoopResult]: For program point L378(lines 378 423) no Hoare annotation was computed. [2020-12-09 07:03:00,655 INFO L262 CegarLoopResult]: For program point L48(lines 48 423) no Hoare annotation was computed. [2020-12-09 07:03:00,655 INFO L262 CegarLoopResult]: For program point L247(lines 247 423) no Hoare annotation was computed. [2020-12-09 07:03:00,655 INFO L262 CegarLoopResult]: For program point L116(lines 116 423) no Hoare annotation was computed. [2020-12-09 07:03:00,655 INFO L262 CegarLoopResult]: For program point L52(lines 52 423) no Hoare annotation was computed. [2020-12-09 07:03:00,655 INFO L262 CegarLoopResult]: For program point L185(lines 185 423) no Hoare annotation was computed. [2020-12-09 07:03:00,655 INFO L262 CegarLoopResult]: For program point L385(lines 385 423) no Hoare annotation was computed. [2020-12-09 07:03:00,655 INFO L262 CegarLoopResult]: For program point L319(lines 319 423) no Hoare annotation was computed. [2020-12-09 07:03:00,655 INFO L262 CegarLoopResult]: For program point L189(lines 189 423) no Hoare annotation was computed. [2020-12-09 07:03:00,655 INFO L262 CegarLoopResult]: For program point L123(lines 123 423) no Hoare annotation was computed. [2020-12-09 07:03:00,655 INFO L262 CegarLoopResult]: For program point L57(lines 57 423) no Hoare annotation was computed. [2020-12-09 07:03:00,655 INFO L262 CegarLoopResult]: For program point L388(lines 388 423) no Hoare annotation was computed. [2020-12-09 07:03:00,655 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 07:03:00,655 INFO L262 CegarLoopResult]: For program point L390(lines 390 423) no Hoare annotation was computed. [2020-12-09 07:03:00,655 INFO L262 CegarLoopResult]: For program point L324(lines 324 423) no Hoare annotation was computed. [2020-12-09 07:03:00,655 INFO L262 CegarLoopResult]: For program point L258(lines 258 423) no Hoare annotation was computed. [2020-12-09 07:03:00,655 INFO L262 CegarLoopResult]: For program point L60(lines 60 423) no Hoare annotation was computed. [2020-12-09 07:03:00,655 INFO L262 CegarLoopResult]: For program point L195(lines 195 423) no Hoare annotation was computed. [2020-12-09 07:03:00,655 INFO L262 CegarLoopResult]: For program point L129(lines 129 423) no Hoare annotation was computed. [2020-12-09 07:03:00,655 INFO L262 CegarLoopResult]: For program point L64(lines 64 423) no Hoare annotation was computed. [2020-12-09 07:03:00,656 INFO L262 CegarLoopResult]: For program point L263(lines 263 423) no Hoare annotation was computed. [2020-12-09 07:03:00,656 INFO L262 CegarLoopResult]: For program point L197(lines 197 423) no Hoare annotation was computed. [2020-12-09 07:03:00,656 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 572) no Hoare annotation was computed. [2020-12-09 07:03:00,656 INFO L262 CegarLoopResult]: For program point L199(lines 199 423) no Hoare annotation was computed. [2020-12-09 07:03:00,656 INFO L262 CegarLoopResult]: For program point L133(lines 133 423) no Hoare annotation was computed. [2020-12-09 07:03:00,656 INFO L262 CegarLoopResult]: For program point L399(lines 399 423) no Hoare annotation was computed. [2020-12-09 07:03:00,656 INFO L262 CegarLoopResult]: For program point L201(lines 201 423) no Hoare annotation was computed. [2020-12-09 07:03:00,656 INFO L262 CegarLoopResult]: For program point L69(lines 69 423) no Hoare annotation was computed. [2020-12-09 07:03:00,656 INFO L262 CegarLoopResult]: For program point L269(lines 269 423) no Hoare annotation was computed. [2020-12-09 07:03:00,656 INFO L262 CegarLoopResult]: For program point L204(lines 204 423) no Hoare annotation was computed. [2020-12-09 07:03:00,656 INFO L262 CegarLoopResult]: For program point L271(lines 271 423) no Hoare annotation was computed. [2020-12-09 07:03:00,656 INFO L262 CegarLoopResult]: For program point L404(lines 404 423) no Hoare annotation was computed. [2020-12-09 07:03:00,656 INFO L262 CegarLoopResult]: For program point L338(lines 338 423) no Hoare annotation was computed. [2020-12-09 07:03:00,656 INFO L262 CegarLoopResult]: For program point L140(lines 140 423) no Hoare annotation was computed. [2020-12-09 07:03:00,656 INFO L262 CegarLoopResult]: For program point L75(lines 75 423) no Hoare annotation was computed. [2020-12-09 07:03:00,656 INFO L262 CegarLoopResult]: For program point L208(lines 208 423) no Hoare annotation was computed. [2020-12-09 07:03:00,656 INFO L262 CegarLoopResult]: For program point L341(lines 341 423) no Hoare annotation was computed. [2020-12-09 07:03:00,656 INFO L262 CegarLoopResult]: For program point L408(lines 408 423) no Hoare annotation was computed. [2020-12-09 07:03:00,656 INFO L262 CegarLoopResult]: For program point L144(lines 144 423) no Hoare annotation was computed. [2020-12-09 07:03:00,657 INFO L258 CegarLoopResult]: At program point L607(lines 39 608) the Hoare annotation is: (let ((.cse0 (<= ~a17~0 8))) (or (and (<= ~a28~0 9) .cse0) (and (<= 8 ~a17~0) .cse0) (and (= ~a25~0 0) .cse0))) [2020-12-09 07:03:00,657 INFO L262 CegarLoopResult]: For program point L79(lines 79 423) no Hoare annotation was computed. [2020-12-09 07:03:00,657 INFO L262 CegarLoopResult]: For program point L212(lines 212 423) no Hoare annotation was computed. [2020-12-09 07:03:00,657 INFO L265 CegarLoopResult]: At program point L610(lines 610 627) the Hoare annotation is: true [2020-12-09 07:03:00,657 INFO L262 CegarLoopResult]: For program point L412(lines 412 423) no Hoare annotation was computed. [2020-12-09 07:03:00,657 INFO L262 CegarLoopResult]: For program point L347(lines 347 423) no Hoare annotation was computed. [2020-12-09 07:03:00,657 INFO L262 CegarLoopResult]: For program point L149(lines 149 423) no Hoare annotation was computed. [2020-12-09 07:03:00,657 INFO L262 CegarLoopResult]: For program point L414(lines 414 423) no Hoare annotation was computed. [2020-12-09 07:03:00,657 INFO L262 CegarLoopResult]: For program point L84(lines 84 423) no Hoare annotation was computed. [2020-12-09 07:03:00,657 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 07:03:00,657 INFO L262 CegarLoopResult]: For program point L417(lines 417 423) no Hoare annotation was computed. [2020-12-09 07:03:00,657 INFO L262 CegarLoopResult]: For program point L153(lines 153 423) no Hoare annotation was computed. [2020-12-09 07:03:00,657 INFO L258 CegarLoopResult]: At program point L616-2(lines 616 626) the Hoare annotation is: (let ((.cse0 (<= ~a17~0 8))) (or (and (<= ~a28~0 9) .cse0) (and (<= 8 ~a17~0) .cse0) (and (= ~a25~0 0) .cse0))) [2020-12-09 07:03:00,657 INFO L262 CegarLoopResult]: For program point L286(lines 286 423) no Hoare annotation was computed. [2020-12-09 07:03:00,657 INFO L262 CegarLoopResult]: For program point L419(lines 419 423) no Hoare annotation was computed. [2020-12-09 07:03:00,657 INFO L262 CegarLoopResult]: For program point L222(lines 222 423) no Hoare annotation was computed. [2020-12-09 07:03:00,657 INFO L262 CegarLoopResult]: For program point L290(lines 290 423) no Hoare annotation was computed. [2020-12-09 07:03:00,658 INFO L262 CegarLoopResult]: For program point L158(lines 158 423) no Hoare annotation was computed. [2020-12-09 07:03:00,658 INFO L262 CegarLoopResult]: For program point L92(lines 92 423) no Hoare annotation was computed. [2020-12-09 07:03:00,658 INFO L262 CegarLoopResult]: For program point L621(line 621) no Hoare annotation was computed. [2020-12-09 07:03:00,658 INFO L262 CegarLoopResult]: For program point L225(lines 225 423) no Hoare annotation was computed. [2020-12-09 07:03:00,658 INFO L262 CegarLoopResult]: For program point L359(lines 359 423) no Hoare annotation was computed. [2020-12-09 07:03:00,658 INFO L262 CegarLoopResult]: For program point L293(lines 293 423) no Hoare annotation was computed. [2020-12-09 07:03:00,658 INFO L262 CegarLoopResult]: For program point L228(lines 228 423) no Hoare annotation was computed. [2020-12-09 07:03:00,658 INFO L262 CegarLoopResult]: For program point L296(lines 296 423) no Hoare annotation was computed. [2020-12-09 07:03:00,658 INFO L262 CegarLoopResult]: For program point L164(lines 164 423) no Hoare annotation was computed. [2020-12-09 07:03:00,658 INFO L262 CegarLoopResult]: For program point L364(lines 364 423) no Hoare annotation was computed. [2020-12-09 07:03:00,658 INFO L262 CegarLoopResult]: For program point L233(lines 233 423) no Hoare annotation was computed. [2020-12-09 07:03:00,658 INFO L262 CegarLoopResult]: For program point L101(lines 101 423) no Hoare annotation was computed. [2020-12-09 07:03:00,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 07:03:00 BoogieIcfgContainer [2020-12-09 07:03:00,669 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 07:03:00,670 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 07:03:00,670 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 07:03:00,670 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 07:03:00,670 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:02:55" (3/4) ... [2020-12-09 07:03:00,672 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 07:03:00,687 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 113 nodes and edges [2020-12-09 07:03:00,688 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2020-12-09 07:03:00,690 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-12-09 07:03:00,691 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-12-09 07:03:00,769 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_16fc8da4-bb28-42d4-850a-6918552ec263/bin/utaipan/witness.graphml [2020-12-09 07:03:00,769 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 07:03:00,770 INFO L168 Benchmark]: Toolchain (without parser) took 6672.10 ms. Allocated memory was 69.2 MB in the beginning and 207.6 MB in the end (delta: 138.4 MB). Free memory was 27.8 MB in the beginning and 64.7 MB in the end (delta: -36.9 MB). Peak memory consumption was 103.2 MB. Max. memory is 16.1 GB. [2020-12-09 07:03:00,770 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 69.2 MB. Free memory is still 45.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 07:03:00,770 INFO L168 Benchmark]: CACSL2BoogieTranslator took 412.80 ms. Allocated memory was 69.2 MB in the beginning and 96.5 MB in the end (delta: 27.3 MB). Free memory was 27.6 MB in the beginning and 53.5 MB in the end (delta: -25.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 16.1 GB. [2020-12-09 07:03:00,771 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.29 ms. Allocated memory is still 96.5 MB. Free memory was 53.5 MB in the beginning and 48.3 MB in the end (delta: 5.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 07:03:00,771 INFO L168 Benchmark]: Boogie Preprocessor took 42.41 ms. Allocated memory is still 96.5 MB. Free memory was 48.3 MB in the beginning and 44.1 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 07:03:00,771 INFO L168 Benchmark]: RCFGBuilder took 1282.64 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 43.6 MB in the beginning and 46.2 MB in the end (delta: -2.7 MB). Peak memory consumption was 28.1 MB. Max. memory is 16.1 GB. [2020-12-09 07:03:00,771 INFO L168 Benchmark]: TraceAbstraction took 4773.81 ms. Allocated memory was 117.4 MB in the beginning and 207.6 MB in the end (delta: 90.2 MB). Free memory was 46.2 MB in the beginning and 79.3 MB in the end (delta: -33.1 MB). Peak memory consumption was 55.9 MB. Max. memory is 16.1 GB. [2020-12-09 07:03:00,772 INFO L168 Benchmark]: Witness Printer took 99.20 ms. Allocated memory is still 207.6 MB. Free memory was 79.3 MB in the beginning and 64.7 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-12-09 07:03:00,773 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 69.2 MB. Free memory is still 45.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 412.80 ms. Allocated memory was 69.2 MB in the beginning and 96.5 MB in the end (delta: 27.3 MB). Free memory was 27.6 MB in the beginning and 53.5 MB in the end (delta: -25.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 56.29 ms. Allocated memory is still 96.5 MB. Free memory was 53.5 MB in the beginning and 48.3 MB in the end (delta: 5.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 42.41 ms. Allocated memory is still 96.5 MB. Free memory was 48.3 MB in the beginning and 44.1 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1282.64 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 43.6 MB in the beginning and 46.2 MB in the end (delta: -2.7 MB). Peak memory consumption was 28.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4773.81 ms. Allocated memory was 117.4 MB in the beginning and 207.6 MB in the end (delta: 90.2 MB). Free memory was 46.2 MB in the beginning and 79.3 MB in the end (delta: -33.1 MB). Peak memory consumption was 55.9 MB. Max. memory is 16.1 GB. * Witness Printer took 99.20 ms. Allocated memory is still 207.6 MB. Free memory was 79.3 MB in the beginning and 64.7 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 572]: 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: 610]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 616]: Loop Invariant Derived loop invariant: ((a28 <= 9 && a17 <= 8) || (8 <= a17 && a17 <= 8)) || (a25 == 0 && a17 <= 8) - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: ((a28 <= 9 && a17 <= 8) || (8 <= a17 && a17 <= 8)) || (a25 == 0 && a17 <= 8) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.6s, OverallIterations: 8, TraceHistogramMax: 5, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 333 SDtfs, 685 SDslu, 54 SDs, 0 SdLazy, 1960 SolverSat, 544 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 740 GetRequests, 718 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=883occurred in iteration=6, 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, 8 MinimizatonAttempts, 270 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 35 NumberOfFragments, 45 HoareAnnotationTreeSize, 3 FomulaSimplifications, 1104 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 12 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 1223 NumberOfCodeBlocks, 1223 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 1570 ConstructedInterpolants, 0 QuantifiedInterpolants, 393356 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1007 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 14 InterpolantComputations, 11 PerfectInterpolantSequences, 713/727 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...