./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label07.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_ef506538-a410-4df0-84b7-919a55c41852/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_ef506538-a410-4df0-84b7-919a55c41852/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_ef506538-a410-4df0-84b7-919a55c41852/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_ef506538-a410-4df0-84b7-919a55c41852/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label07.c -s /tmp/vcloud-vcloud-master/worker/run_dir_ef506538-a410-4df0-84b7-919a55c41852/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_ef506538-a410-4df0-84b7-919a55c41852/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 c3404c1fa142754bfca0a1613808298f0a5a3901 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 10:41:24,040 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 10:41:24,041 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 10:41:24,078 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 10:41:24,078 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 10:41:24,079 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 10:41:24,080 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 10:41:24,082 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 10:41:24,083 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 10:41:24,084 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 10:41:24,085 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 10:41:24,086 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 10:41:24,086 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 10:41:24,087 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 10:41:24,088 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 10:41:24,089 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 10:41:24,090 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 10:41:24,091 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 10:41:24,092 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 10:41:24,094 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 10:41:24,095 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 10:41:24,097 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 10:41:24,098 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 10:41:24,099 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 10:41:24,103 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 10:41:24,103 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 10:41:24,103 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 10:41:24,105 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 10:41:24,105 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 10:41:24,106 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 10:41:24,106 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 10:41:24,107 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 10:41:24,108 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 10:41:24,109 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 10:41:24,110 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 10:41:24,110 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 10:41:24,111 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 10:41:24,111 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 10:41:24,111 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 10:41:24,112 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 10:41:24,113 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 10:41:24,114 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_ef506538-a410-4df0-84b7-919a55c41852/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 10:41:24,136 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 10:41:24,136 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 10:41:24,137 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 10:41:24,137 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 10:41:24,137 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 10:41:24,137 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 10:41:24,137 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 10:41:24,138 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 10:41:24,138 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 10:41:24,138 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 10:41:24,138 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 10:41:24,138 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 10:41:24,138 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 10:41:24,139 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 10:41:24,139 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 10:41:24,139 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 10:41:24,140 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 10:41:24,140 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 10:41:24,140 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 10:41:24,140 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 10:41:24,140 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 10:41:24,140 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 10:41:24,141 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 10:41:24,141 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 10:41:24,141 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 10:41:24,141 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 10:41:24,141 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 10:41:24,141 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 10:41:24,142 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 10:41:24,142 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 10:41:24,142 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 10:41:24,142 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 10:41:24,142 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 10:41:24,142 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 10:41:24,143 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 10:41:24,143 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 10:41:24,143 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 10:41:24,143 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 10:41:24,143 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 10:41:24,143 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_ef506538-a410-4df0-84b7-919a55c41852/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_ef506538-a410-4df0-84b7-919a55c41852/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c3404c1fa142754bfca0a1613808298f0a5a3901 [2020-12-09 10:41:24,318 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 10:41:24,342 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 10:41:24,343 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 10:41:24,344 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 10:41:24,345 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 10:41:24,346 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_ef506538-a410-4df0-84b7-919a55c41852/bin/utaipan/../../sv-benchmarks/c/eca-rers2012/Problem01_label07.c [2020-12-09 10:41:24,389 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ef506538-a410-4df0-84b7-919a55c41852/bin/utaipan/data/7f5dc12ac/f024aad5961b429983bbb29130657107/FLAG39daf3d6c [2020-12-09 10:41:24,838 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 10:41:24,839 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_ef506538-a410-4df0-84b7-919a55c41852/sv-benchmarks/c/eca-rers2012/Problem01_label07.c [2020-12-09 10:41:24,850 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ef506538-a410-4df0-84b7-919a55c41852/bin/utaipan/data/7f5dc12ac/f024aad5961b429983bbb29130657107/FLAG39daf3d6c [2020-12-09 10:41:24,862 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_ef506538-a410-4df0-84b7-919a55c41852/bin/utaipan/data/7f5dc12ac/f024aad5961b429983bbb29130657107 [2020-12-09 10:41:24,864 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 10:41:24,865 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 10:41:24,867 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 10:41:24,867 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 10:41:24,870 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 10:41:24,870 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 10:41:24" (1/1) ... [2020-12-09 10:41:24,872 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bc30221 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:41:24, skipping insertion in model container [2020-12-09 10:41:24,872 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 10:41:24" (1/1) ... [2020-12-09 10:41:24,877 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 10:41:24,916 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 10:41:25,160 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_ef506538-a410-4df0-84b7-919a55c41852/sv-benchmarks/c/eca-rers2012/Problem01_label07.c[18480,18493] [2020-12-09 10:41:25,181 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 10:41:25,190 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 10:41:25,258 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_ef506538-a410-4df0-84b7-919a55c41852/sv-benchmarks/c/eca-rers2012/Problem01_label07.c[18480,18493] [2020-12-09 10:41:25,270 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 10:41:25,284 INFO L208 MainTranslator]: Completed translation [2020-12-09 10:41:25,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:41:25 WrapperNode [2020-12-09 10:41:25,284 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 10:41:25,285 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 10:41:25,285 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 10:41:25,285 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 10:41:25,291 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:41:25" (1/1) ... [2020-12-09 10:41:25,306 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:41:25" (1/1) ... [2020-12-09 10:41:25,340 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 10:41:25,341 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 10:41:25,341 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 10:41:25,341 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 10:41:25,347 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:41:25" (1/1) ... [2020-12-09 10:41:25,347 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:41:25" (1/1) ... [2020-12-09 10:41:25,351 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:41:25" (1/1) ... [2020-12-09 10:41:25,351 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:41:25" (1/1) ... [2020-12-09 10:41:25,367 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:41:25" (1/1) ... [2020-12-09 10:41:25,374 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:41:25" (1/1) ... [2020-12-09 10:41:25,380 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:41:25" (1/1) ... [2020-12-09 10:41:25,389 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 10:41:25,390 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 10:41:25,390 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 10:41:25,390 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 10:41:25,391 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:41:25" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ef506538-a410-4df0-84b7-919a55c41852/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 10:41:25,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 10:41:25,450 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 10:41:25,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 10:41:25,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 10:41:26,684 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 10:41:26,685 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-09 10:41:26,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 10:41:26 BoogieIcfgContainer [2020-12-09 10:41:26,687 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 10:41:26,688 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 10:41:26,689 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 10:41:26,691 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 10:41:26,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 10:41:24" (1/3) ... [2020-12-09 10:41:26,692 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@462523e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 10:41:26, skipping insertion in model container [2020-12-09 10:41:26,693 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:41:25" (2/3) ... [2020-12-09 10:41:26,693 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@462523e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 10:41:26, skipping insertion in model container [2020-12-09 10:41:26,693 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 10:41:26" (3/3) ... [2020-12-09 10:41:26,694 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label07.c [2020-12-09 10:41:26,707 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 10:41:26,710 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 10:41:26,717 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 10:41:26,739 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 10:41:26,739 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 10:41:26,739 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 10:41:26,739 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 10:41:26,739 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 10:41:26,739 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 10:41:26,740 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 10:41:26,740 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 10:41:26,751 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2020-12-09 10:41:26,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-09 10:41:26,757 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:41:26,758 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] [2020-12-09 10:41:26,758 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:41:26,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:41:26,763 INFO L82 PathProgramCache]: Analyzing trace with hash -1806911064, now seen corresponding path program 1 times [2020-12-09 10:41:26,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:41:26,769 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306442740] [2020-12-09 10:41:26,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:41:26,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:41:27,105 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 10:41:27,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306442740] [2020-12-09 10:41:27,106 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:41:27,106 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 10:41:27,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081691695] [2020-12-09 10:41:27,110 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 10:41:27,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:41:27,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 10:41:27,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 10:41:27,122 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 4 states. [2020-12-09 10:41:27,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:41:27,612 INFO L93 Difference]: Finished difference Result 297 states and 569 transitions. [2020-12-09 10:41:27,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 10:41:27,613 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 71 [2020-12-09 10:41:27,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:41:27,622 INFO L225 Difference]: With dead ends: 297 [2020-12-09 10:41:27,622 INFO L226 Difference]: Without dead ends: 216 [2020-12-09 10:41:27,625 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 10:41:27,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-12-09 10:41:27,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2020-12-09 10:41:27,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-12-09 10:41:27,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 336 transitions. [2020-12-09 10:41:27,669 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 336 transitions. Word has length 71 [2020-12-09 10:41:27,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:41:27,670 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 336 transitions. [2020-12-09 10:41:27,670 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 10:41:27,670 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 336 transitions. [2020-12-09 10:41:27,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-09 10:41:27,673 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:41:27,673 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-09 10:41:27,673 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 10:41:27,674 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:41:27,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:41:27,674 INFO L82 PathProgramCache]: Analyzing trace with hash -1703776199, now seen corresponding path program 1 times [2020-12-09 10:41:27,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:41:27,675 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199959283] [2020-12-09 10:41:27,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:41:27,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:41:27,815 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:41:27,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199959283] [2020-12-09 10:41:27,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:41:27,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 10:41:27,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669302305] [2020-12-09 10:41:27,817 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 10:41:27,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:41:27,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 10:41:27,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 10:41:27,818 INFO L87 Difference]: Start difference. First operand 216 states and 336 transitions. Second operand 4 states. [2020-12-09 10:41:28,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:41:28,242 INFO L93 Difference]: Finished difference Result 571 states and 986 transitions. [2020-12-09 10:41:28,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 10:41:28,242 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 78 [2020-12-09 10:41:28,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:41:28,245 INFO L225 Difference]: With dead ends: 571 [2020-12-09 10:41:28,245 INFO L226 Difference]: Without dead ends: 358 [2020-12-09 10:41:28,246 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 10:41:28,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2020-12-09 10:41:28,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 216. [2020-12-09 10:41:28,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-12-09 10:41:28,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 293 transitions. [2020-12-09 10:41:28,258 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 293 transitions. Word has length 78 [2020-12-09 10:41:28,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:41:28,258 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 293 transitions. [2020-12-09 10:41:28,258 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 10:41:28,258 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 293 transitions. [2020-12-09 10:41:28,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-12-09 10:41:28,260 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:41:28,260 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2020-12-09 10:41:28,260 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 10:41:28,260 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:41:28,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:41:28,261 INFO L82 PathProgramCache]: Analyzing trace with hash 350100343, now seen corresponding path program 1 times [2020-12-09 10:41:28,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:41:28,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931362473] [2020-12-09 10:41:28,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:41:28,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:41:28,308 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:41:28,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931362473] [2020-12-09 10:41:28,308 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:41:28,308 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 10:41:28,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952439801] [2020-12-09 10:41:28,309 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 10:41:28,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:41:28,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 10:41:28,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 10:41:28,309 INFO L87 Difference]: Start difference. First operand 216 states and 293 transitions. Second operand 4 states. [2020-12-09 10:41:28,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:41:28,586 INFO L93 Difference]: Finished difference Result 573 states and 802 transitions. [2020-12-09 10:41:28,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 10:41:28,586 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 86 [2020-12-09 10:41:28,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:41:28,588 INFO L225 Difference]: With dead ends: 573 [2020-12-09 10:41:28,588 INFO L226 Difference]: Without dead ends: 358 [2020-12-09 10:41:28,589 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 10:41:28,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2020-12-09 10:41:28,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 358. [2020-12-09 10:41:28,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 358 states. [2020-12-09 10:41:28,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 484 transitions. [2020-12-09 10:41:28,603 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 484 transitions. Word has length 86 [2020-12-09 10:41:28,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:41:28,603 INFO L481 AbstractCegarLoop]: Abstraction has 358 states and 484 transitions. [2020-12-09 10:41:28,603 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 10:41:28,604 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 484 transitions. [2020-12-09 10:41:28,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-12-09 10:41:28,605 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:41:28,606 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1] [2020-12-09 10:41:28,606 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 10:41:28,606 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:41:28,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:41:28,606 INFO L82 PathProgramCache]: Analyzing trace with hash -1470704677, now seen corresponding path program 1 times [2020-12-09 10:41:28,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:41:28,607 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103712621] [2020-12-09 10:41:28,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:41:28,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:41:28,646 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-12-09 10:41:28,646 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103712621] [2020-12-09 10:41:28,647 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:41:28,647 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 10:41:28,647 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212576764] [2020-12-09 10:41:28,647 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 10:41:28,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:41:28,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 10:41:28,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 10:41:28,648 INFO L87 Difference]: Start difference. First operand 358 states and 484 transitions. Second operand 3 states. [2020-12-09 10:41:28,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:41:28,886 INFO L93 Difference]: Finished difference Result 999 states and 1341 transitions. [2020-12-09 10:41:28,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 10:41:28,887 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 95 [2020-12-09 10:41:28,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:41:28,890 INFO L225 Difference]: With dead ends: 999 [2020-12-09 10:41:28,891 INFO L226 Difference]: Without dead ends: 642 [2020-12-09 10:41:28,892 INFO L677 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 [2020-12-09 10:41:28,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2020-12-09 10:41:28,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 571. [2020-12-09 10:41:28,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2020-12-09 10:41:28,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 778 transitions. [2020-12-09 10:41:28,912 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 778 transitions. Word has length 95 [2020-12-09 10:41:28,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:41:28,912 INFO L481 AbstractCegarLoop]: Abstraction has 571 states and 778 transitions. [2020-12-09 10:41:28,912 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 10:41:28,913 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 778 transitions. [2020-12-09 10:41:28,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-12-09 10:41:28,915 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:41:28,916 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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 10:41:28,916 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 10:41:28,916 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:41:28,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:41:28,916 INFO L82 PathProgramCache]: Analyzing trace with hash 1896309049, now seen corresponding path program 1 times [2020-12-09 10:41:28,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:41:28,917 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265232385] [2020-12-09 10:41:28,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:41:28,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:41:28,984 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-12-09 10:41:28,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265232385] [2020-12-09 10:41:28,985 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:41:28,985 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 10:41:28,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444972907] [2020-12-09 10:41:28,985 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 10:41:28,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:41:28,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 10:41:28,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 10:41:28,986 INFO L87 Difference]: Start difference. First operand 571 states and 778 transitions. Second operand 4 states. [2020-12-09 10:41:29,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:41:29,332 INFO L93 Difference]: Finished difference Result 1496 states and 2082 transitions. [2020-12-09 10:41:29,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 10:41:29,332 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 120 [2020-12-09 10:41:29,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:41:29,338 INFO L225 Difference]: With dead ends: 1496 [2020-12-09 10:41:29,338 INFO L226 Difference]: Without dead ends: 926 [2020-12-09 10:41:29,339 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 10:41:29,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2020-12-09 10:41:29,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 642. [2020-12-09 10:41:29,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 642 states. [2020-12-09 10:41:29,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 857 transitions. [2020-12-09 10:41:29,360 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 857 transitions. Word has length 120 [2020-12-09 10:41:29,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:41:29,360 INFO L481 AbstractCegarLoop]: Abstraction has 642 states and 857 transitions. [2020-12-09 10:41:29,360 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 10:41:29,360 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 857 transitions. [2020-12-09 10:41:29,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-12-09 10:41:29,363 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:41:29,363 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-12-09 10:41:29,363 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-09 10:41:29,363 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:41:29,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:41:29,364 INFO L82 PathProgramCache]: Analyzing trace with hash -1126657450, now seen corresponding path program 1 times [2020-12-09 10:41:29,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:41:29,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956894873] [2020-12-09 10:41:29,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:41:29,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:41:29,434 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-12-09 10:41:29,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956894873] [2020-12-09 10:41:29,434 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:41:29,434 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 10:41:29,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46038670] [2020-12-09 10:41:29,434 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 10:41:29,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:41:29,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 10:41:29,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 10:41:29,435 INFO L87 Difference]: Start difference. First operand 642 states and 857 transitions. Second operand 4 states. [2020-12-09 10:41:29,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:41:29,762 INFO L93 Difference]: Finished difference Result 1496 states and 1975 transitions. [2020-12-09 10:41:29,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 10:41:29,762 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 134 [2020-12-09 10:41:29,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:41:29,766 INFO L225 Difference]: With dead ends: 1496 [2020-12-09 10:41:29,766 INFO L226 Difference]: Without dead ends: 855 [2020-12-09 10:41:29,767 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 10:41:29,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2020-12-09 10:41:29,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 784. [2020-12-09 10:41:29,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 784 states. [2020-12-09 10:41:29,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1021 transitions. [2020-12-09 10:41:29,780 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1021 transitions. Word has length 134 [2020-12-09 10:41:29,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:41:29,780 INFO L481 AbstractCegarLoop]: Abstraction has 784 states and 1021 transitions. [2020-12-09 10:41:29,780 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 10:41:29,780 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1021 transitions. [2020-12-09 10:41:29,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-12-09 10:41:29,782 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:41:29,782 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2020-12-09 10:41:29,782 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-09 10:41:29,783 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:41:29,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:41:29,783 INFO L82 PathProgramCache]: Analyzing trace with hash -1080130633, now seen corresponding path program 1 times [2020-12-09 10:41:29,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:41:29,783 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383960906] [2020-12-09 10:41:29,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:41:29,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:41:29,857 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 138 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-12-09 10:41:29,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383960906] [2020-12-09 10:41:29,858 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:41:29,858 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 10:41:29,858 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519906403] [2020-12-09 10:41:29,858 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 10:41:29,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:41:29,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 10:41:29,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 10:41:29,859 INFO L87 Difference]: Start difference. First operand 784 states and 1021 transitions. Second operand 3 states. [2020-12-09 10:41:30,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:41:30,081 INFO L93 Difference]: Finished difference Result 1780 states and 2292 transitions. [2020-12-09 10:41:30,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 10:41:30,081 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 176 [2020-12-09 10:41:30,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:41:30,085 INFO L225 Difference]: With dead ends: 1780 [2020-12-09 10:41:30,085 INFO L226 Difference]: Without dead ends: 997 [2020-12-09 10:41:30,086 INFO L677 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 [2020-12-09 10:41:30,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2020-12-09 10:41:30,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 855. [2020-12-09 10:41:30,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 855 states. [2020-12-09 10:41:30,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1113 transitions. [2020-12-09 10:41:30,104 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1113 transitions. Word has length 176 [2020-12-09 10:41:30,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:41:30,104 INFO L481 AbstractCegarLoop]: Abstraction has 855 states and 1113 transitions. [2020-12-09 10:41:30,104 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 10:41:30,104 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1113 transitions. [2020-12-09 10:41:30,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-12-09 10:41:30,106 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:41:30,107 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-12-09 10:41:30,107 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-09 10:41:30,107 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:41:30,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:41:30,107 INFO L82 PathProgramCache]: Analyzing trace with hash -27490727, now seen corresponding path program 1 times [2020-12-09 10:41:30,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:41:30,107 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192957500] [2020-12-09 10:41:30,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:41:30,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:41:30,184 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 243 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2020-12-09 10:41:30,184 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192957500] [2020-12-09 10:41:30,184 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:41:30,184 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 10:41:30,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126041017] [2020-12-09 10:41:30,185 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 10:41:30,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:41:30,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 10:41:30,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 10:41:30,185 INFO L87 Difference]: Start difference. First operand 855 states and 1113 transitions. Second operand 3 states. [2020-12-09 10:41:30,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:41:30,396 INFO L93 Difference]: Finished difference Result 1851 states and 2378 transitions. [2020-12-09 10:41:30,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 10:41:30,397 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 219 [2020-12-09 10:41:30,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:41:30,401 INFO L225 Difference]: With dead ends: 1851 [2020-12-09 10:41:30,401 INFO L226 Difference]: Without dead ends: 997 [2020-12-09 10:41:30,402 INFO L677 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 [2020-12-09 10:41:30,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2020-12-09 10:41:30,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 926. [2020-12-09 10:41:30,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 926 states. [2020-12-09 10:41:30,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1153 transitions. [2020-12-09 10:41:30,417 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1153 transitions. Word has length 219 [2020-12-09 10:41:30,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:41:30,418 INFO L481 AbstractCegarLoop]: Abstraction has 926 states and 1153 transitions. [2020-12-09 10:41:30,418 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 10:41:30,418 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1153 transitions. [2020-12-09 10:41:30,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-12-09 10:41:30,420 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:41:30,421 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-12-09 10:41:30,421 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-09 10:41:30,421 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:41:30,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:41:30,421 INFO L82 PathProgramCache]: Analyzing trace with hash -194116904, now seen corresponding path program 1 times [2020-12-09 10:41:30,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:41:30,421 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122883707] [2020-12-09 10:41:30,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:41:30,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:41:30,574 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 253 proven. 35 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2020-12-09 10:41:30,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122883707] [2020-12-09 10:41:30,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416481296] [2020-12-09 10:41:30,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ef506538-a410-4df0-84b7-919a55c41852/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 10:41:30,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:41:30,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 10:41:30,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 10:41:30,866 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 242 proven. 0 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2020-12-09 10:41:30,866 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 10:41:31,015 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 242 proven. 0 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2020-12-09 10:41:31,015 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 10:41:31,015 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 7 [2020-12-09 10:41:31,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429579323] [2020-12-09 10:41:31,016 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 10:41:31,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:41:31,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 10:41:31,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-09 10:41:31,017 INFO L87 Difference]: Start difference. First operand 926 states and 1153 transitions. Second operand 3 states. [2020-12-09 10:41:31,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:41:31,272 INFO L93 Difference]: Finished difference Result 2135 states and 2648 transitions. [2020-12-09 10:41:31,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 10:41:31,272 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 232 [2020-12-09 10:41:31,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:41:31,279 INFO L225 Difference]: With dead ends: 2135 [2020-12-09 10:41:31,279 INFO L226 Difference]: Without dead ends: 1210 [2020-12-09 10:41:31,280 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 461 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-09 10:41:31,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2020-12-09 10:41:31,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1068. [2020-12-09 10:41:31,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1068 states. [2020-12-09 10:41:31,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1333 transitions. [2020-12-09 10:41:31,303 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1333 transitions. Word has length 232 [2020-12-09 10:41:31,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:41:31,304 INFO L481 AbstractCegarLoop]: Abstraction has 1068 states and 1333 transitions. [2020-12-09 10:41:31,304 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 10:41:31,304 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1333 transitions. [2020-12-09 10:41:31,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-12-09 10:41:31,307 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:41:31,307 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-12-09 10:41:31,508 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-12-09 10:41:31,508 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:41:31,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:41:31,509 INFO L82 PathProgramCache]: Analyzing trace with hash 1646205808, now seen corresponding path program 1 times [2020-12-09 10:41:31,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:41:31,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274450919] [2020-12-09 10:41:31,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:41:31,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:41:31,731 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 256 proven. 142 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-09 10:41:31,732 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274450919] [2020-12-09 10:41:31,732 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [253161117] [2020-12-09 10:41:31,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ef506538-a410-4df0-84b7-919a55c41852/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 10:41:31,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:41:31,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 534 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 10:41:31,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 10:41:32,010 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 251 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2020-12-09 10:41:32,011 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 10:41:32,132 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 251 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2020-12-09 10:41:32,132 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 10:41:32,132 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 7 [2020-12-09 10:41:32,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275545830] [2020-12-09 10:41:32,133 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 10:41:32,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:41:32,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 10:41:32,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-12-09 10:41:32,134 INFO L87 Difference]: Start difference. First operand 1068 states and 1333 transitions. Second operand 3 states. [2020-12-09 10:41:32,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:41:32,294 INFO L93 Difference]: Finished difference Result 2133 states and 2664 transitions. [2020-12-09 10:41:32,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 10:41:32,295 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 241 [2020-12-09 10:41:32,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:41:32,295 INFO L225 Difference]: With dead ends: 2133 [2020-12-09 10:41:32,295 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 10:41:32,297 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 487 GetRequests, 481 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-12-09 10:41:32,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 10:41:32,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 10:41:32,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 10:41:32,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 10:41:32,297 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 241 [2020-12-09 10:41:32,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:41:32,297 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 10:41:32,297 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 10:41:32,297 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 10:41:32,297 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 10:41:32,498 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-09 10:41:32,501 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 10:41:32,751 INFO L262 CegarLoopResult]: For program point L498(line 498) no Hoare annotation was computed. [2020-12-09 10:41:32,751 INFO L262 CegarLoopResult]: For program point L102(lines 102 400) no Hoare annotation was computed. [2020-12-09 10:41:32,751 INFO L262 CegarLoopResult]: For program point L598(line 598) no Hoare annotation was computed. [2020-12-09 10:41:32,751 INFO L262 CegarLoopResult]: For program point L334(lines 334 400) no Hoare annotation was computed. [2020-12-09 10:41:32,751 INFO L262 CegarLoopResult]: For program point L302(lines 302 400) no Hoare annotation was computed. [2020-12-09 10:41:32,751 INFO L262 CegarLoopResult]: For program point L170(lines 170 400) no Hoare annotation was computed. [2020-12-09 10:41:32,751 INFO L262 CegarLoopResult]: For program point L204(lines 204 400) no Hoare annotation was computed. [2020-12-09 10:41:32,751 INFO L262 CegarLoopResult]: For program point L72(lines 72 400) no Hoare annotation was computed. [2020-12-09 10:41:32,751 INFO L262 CegarLoopResult]: For program point L271(lines 271 400) no Hoare annotation was computed. [2020-12-09 10:41:32,751 INFO L262 CegarLoopResult]: For program point L139(lines 139 400) no Hoare annotation was computed. [2020-12-09 10:41:32,751 INFO L262 CegarLoopResult]: For program point L371(lines 371 400) no Hoare annotation was computed. [2020-12-09 10:41:32,751 INFO L262 CegarLoopResult]: For program point L107(lines 107 400) no Hoare annotation was computed. [2020-12-09 10:41:32,751 INFO L262 CegarLoopResult]: For program point L41(lines 41 400) no Hoare annotation was computed. [2020-12-09 10:41:32,751 INFO L262 CegarLoopResult]: For program point L339(lines 339 400) no Hoare annotation was computed. [2020-12-09 10:41:32,751 INFO L262 CegarLoopResult]: For program point L207(lines 207 400) no Hoare annotation was computed. [2020-12-09 10:41:32,751 INFO L262 CegarLoopResult]: For program point L75(lines 75 400) no Hoare annotation was computed. [2020-12-09 10:41:32,751 INFO L262 CegarLoopResult]: For program point L373(lines 373 400) no Hoare annotation was computed. [2020-12-09 10:41:32,751 INFO L262 CegarLoopResult]: For program point L241(lines 241 400) no Hoare annotation was computed. [2020-12-09 10:41:32,752 INFO L262 CegarLoopResult]: For program point L175(lines 175 400) no Hoare annotation was computed. [2020-12-09 10:41:32,752 INFO L262 CegarLoopResult]: For program point L275(lines 275 400) no Hoare annotation was computed. [2020-12-09 10:41:32,752 INFO L262 CegarLoopResult]: For program point L375(lines 375 400) no Hoare annotation was computed. [2020-12-09 10:41:32,752 INFO L262 CegarLoopResult]: For program point L309(lines 309 400) no Hoare annotation was computed. [2020-12-09 10:41:32,752 INFO L262 CegarLoopResult]: For program point L45(lines 45 400) no Hoare annotation was computed. [2020-12-09 10:41:32,752 INFO L262 CegarLoopResult]: For program point L343(lines 343 400) no Hoare annotation was computed. [2020-12-09 10:41:32,752 INFO L262 CegarLoopResult]: For program point L112(lines 112 400) no Hoare annotation was computed. [2020-12-09 10:41:32,752 INFO L262 CegarLoopResult]: For program point L278(lines 278 400) no Hoare annotation was computed. [2020-12-09 10:41:32,752 INFO L262 CegarLoopResult]: For program point L146(lines 146 400) no Hoare annotation was computed. [2020-12-09 10:41:32,752 INFO L262 CegarLoopResult]: For program point L213(lines 213 400) no Hoare annotation was computed. [2020-12-09 10:41:32,752 INFO L262 CegarLoopResult]: For program point L82(lines 82 400) no Hoare annotation was computed. [2020-12-09 10:41:32,752 INFO L262 CegarLoopResult]: For program point L347(lines 347 400) no Hoare annotation was computed. [2020-12-09 10:41:32,752 INFO L262 CegarLoopResult]: For program point L248(lines 248 400) no Hoare annotation was computed. [2020-12-09 10:41:32,752 INFO L262 CegarLoopResult]: For program point L183(lines 183 400) no Hoare annotation was computed. [2020-12-09 10:41:32,752 INFO L262 CegarLoopResult]: For program point L150(lines 150 400) no Hoare annotation was computed. [2020-12-09 10:41:32,752 INFO L262 CegarLoopResult]: For program point L382(lines 382 400) no Hoare annotation was computed. [2020-12-09 10:41:32,752 INFO L262 CegarLoopResult]: For program point L316(lines 316 400) no Hoare annotation was computed. [2020-12-09 10:41:32,752 INFO L262 CegarLoopResult]: For program point L283(lines 283 400) no Hoare annotation was computed. [2020-12-09 10:41:32,752 INFO L262 CegarLoopResult]: For program point L118(lines 118 400) no Hoare annotation was computed. [2020-12-09 10:41:32,752 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 10:41:32,752 INFO L262 CegarLoopResult]: For program point L218(lines 218 400) no Hoare annotation was computed. [2020-12-09 10:41:32,752 INFO L262 CegarLoopResult]: For program point L53(lines 53 400) no Hoare annotation was computed. [2020-12-09 10:41:32,752 INFO L262 CegarLoopResult]: For program point L154(lines 154 400) no Hoare annotation was computed. [2020-12-09 10:41:32,753 INFO L258 CegarLoopResult]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse4 (= ~a21~0 1)) (.cse5 (= ~a12~0 8)) (.cse7 (= ~a17~0 1)) (.cse2 (= ~a16~0 6)) (.cse1 (not (= ~a8~0 13))) (.cse6 (= ~a20~0 1)) (.cse8 (not (= ~a7~0 1))) (.cse0 (<= ~a16~0 5)) (.cse3 (<= ~a21~0 0))) (or (and .cse0 .cse1) (and .cse2 .cse3) (and .cse4 .cse5 .cse6 (= ~a16~0 4) .cse7) (and .cse4 .cse5 .cse6 .cse8 .cse7) (and .cse2 .cse1 .cse8) (and .cse0 .cse8) (and .cse1 .cse6 .cse8) (and .cse0 .cse3))) [2020-12-09 10:41:32,753 INFO L262 CegarLoopResult]: For program point L188(lines 188 400) no Hoare annotation was computed. [2020-12-09 10:41:32,753 INFO L262 CegarLoopResult]: For program point L387(lines 387 400) no Hoare annotation was computed. [2020-12-09 10:41:32,753 INFO L262 CegarLoopResult]: For program point L288(lines 288 400) no Hoare annotation was computed. [2020-12-09 10:41:32,753 INFO L262 CegarLoopResult]: For program point L255(lines 255 400) no Hoare annotation was computed. [2020-12-09 10:41:32,753 INFO L262 CegarLoopResult]: For program point L90(lines 90 400) no Hoare annotation was computed. [2020-12-09 10:41:32,753 INFO L262 CegarLoopResult]: For program point L355(lines 355 400) no Hoare annotation was computed. [2020-12-09 10:41:32,753 INFO L262 CegarLoopResult]: For program point L322(lines 322 400) no Hoare annotation was computed. [2020-12-09 10:41:32,753 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 10:41:32,753 INFO L262 CegarLoopResult]: For program point L124(lines 124 400) no Hoare annotation was computed. [2020-12-09 10:41:32,753 INFO L265 CegarLoopResult]: At program point L587(lines 587 604) the Hoare annotation is: true [2020-12-09 10:41:32,753 INFO L262 CegarLoopResult]: For program point L224(lines 224 400) no Hoare annotation was computed. [2020-12-09 10:41:32,753 INFO L262 CegarLoopResult]: For program point L158(lines 158 400) no Hoare annotation was computed. [2020-12-09 10:41:32,753 INFO L262 CegarLoopResult]: For program point L59(lines 59 400) no Hoare annotation was computed. [2020-12-09 10:41:32,753 INFO L262 CegarLoopResult]: For program point L94(lines 94 400) no Hoare annotation was computed. [2020-12-09 10:41:32,753 INFO L262 CegarLoopResult]: For program point L392(lines 392 400) no Hoare annotation was computed. [2020-12-09 10:41:32,753 INFO L262 CegarLoopResult]: For program point L326(lines 326 400) no Hoare annotation was computed. [2020-12-09 10:41:32,753 INFO L262 CegarLoopResult]: For program point L260(lines 260 400) no Hoare annotation was computed. [2020-12-09 10:41:32,753 INFO L262 CegarLoopResult]: For program point L228(lines 228 400) no Hoare annotation was computed. [2020-12-09 10:41:32,753 INFO L262 CegarLoopResult]: For program point L162(lines 162 400) no Hoare annotation was computed. [2020-12-09 10:41:32,754 INFO L262 CegarLoopResult]: For program point L129(lines 129 400) no Hoare annotation was computed. [2020-12-09 10:41:32,754 INFO L262 CegarLoopResult]: For program point L328(lines 328 400) no Hoare annotation was computed. [2020-12-09 10:41:32,754 INFO L262 CegarLoopResult]: For program point L196(lines 196 400) no Hoare annotation was computed. [2020-12-09 10:41:32,754 INFO L262 CegarLoopResult]: For program point L64(lines 64 400) no Hoare annotation was computed. [2020-12-09 10:41:32,754 INFO L258 CegarLoopResult]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse4 (= ~a21~0 1)) (.cse5 (= ~a12~0 8)) (.cse7 (= ~a17~0 1)) (.cse2 (= ~a16~0 6)) (.cse1 (not (= ~a8~0 13))) (.cse6 (= ~a20~0 1)) (.cse8 (not (= ~a7~0 1))) (.cse0 (<= ~a16~0 5)) (.cse3 (<= ~a21~0 0))) (or (and .cse0 .cse1) (and .cse2 .cse3) (and .cse4 .cse5 .cse6 (= ~a16~0 4) .cse7) (and .cse4 .cse5 .cse6 .cse8 .cse7) (and .cse2 .cse1 .cse8) (and .cse0 .cse8) (and .cse1 .cse6 .cse8) (and .cse0 .cse3))) [2020-12-09 10:41:32,754 INFO L262 CegarLoopResult]: For program point L494-1(lines 40 585) no Hoare annotation was computed. [2020-12-09 10:41:32,754 INFO L262 CegarLoopResult]: For program point L296(lines 296 400) no Hoare annotation was computed. [2020-12-09 10:41:32,754 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 498) no Hoare annotation was computed. [2020-12-09 10:41:32,754 INFO L262 CegarLoopResult]: For program point L363(lines 363 400) no Hoare annotation was computed. [2020-12-09 10:41:32,754 INFO L262 CegarLoopResult]: For program point L199(lines 199 400) no Hoare annotation was computed. [2020-12-09 10:41:32,754 INFO L262 CegarLoopResult]: For program point L497-1(lines 40 585) no Hoare annotation was computed. [2020-12-09 10:41:32,754 INFO L262 CegarLoopResult]: For program point L365(lines 365 400) no Hoare annotation was computed. [2020-12-09 10:41:32,754 INFO L262 CegarLoopResult]: For program point L266(lines 266 400) no Hoare annotation was computed. [2020-12-09 10:41:32,754 INFO L262 CegarLoopResult]: For program point L233(lines 233 400) no Hoare annotation was computed. [2020-12-09 10:41:32,754 INFO L262 CegarLoopResult]: For program point L134(lines 134 400) no Hoare annotation was computed. [2020-12-09 10:41:32,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 10:41:32 BoogieIcfgContainer [2020-12-09 10:41:32,768 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 10:41:32,768 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 10:41:32,769 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 10:41:32,769 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 10:41:32,769 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 10:41:26" (3/4) ... [2020-12-09 10:41:32,772 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 10:41:32,791 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 102 nodes and edges [2020-12-09 10:41:32,793 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2020-12-09 10:41:32,794 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-12-09 10:41:32,795 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-12-09 10:41:32,897 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_ef506538-a410-4df0-84b7-919a55c41852/bin/utaipan/witness.graphml [2020-12-09 10:41:32,897 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 10:41:32,899 INFO L168 Benchmark]: Toolchain (without parser) took 8032.35 ms. Allocated memory was 132.1 MB in the beginning and 302.0 MB in the end (delta: 169.9 MB). Free memory was 94.0 MB in the beginning and 190.0 MB in the end (delta: -96.0 MB). Peak memory consumption was 72.1 MB. Max. memory is 16.1 GB. [2020-12-09 10:41:32,899 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 132.1 MB. Free memory was 105.6 MB in the beginning and 105.6 MB in the end (delta: 26.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 10:41:32,900 INFO L168 Benchmark]: CACSL2BoogieTranslator took 417.53 ms. Allocated memory is still 132.1 MB. Free memory was 93.8 MB in the beginning and 88.7 MB in the end (delta: 5.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 10:41:32,900 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.03 ms. Allocated memory is still 132.1 MB. Free memory was 88.7 MB in the beginning and 83.1 MB in the end (delta: 5.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-12-09 10:41:32,900 INFO L168 Benchmark]: Boogie Preprocessor took 48.44 ms. Allocated memory is still 132.1 MB. Free memory was 83.1 MB in the beginning and 78.1 MB in the end (delta: 5.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 10:41:32,901 INFO L168 Benchmark]: RCFGBuilder took 1297.29 ms. Allocated memory was 132.1 MB in the beginning and 174.1 MB in the end (delta: 41.9 MB). Free memory was 78.1 MB in the beginning and 138.8 MB in the end (delta: -60.7 MB). Peak memory consumption was 80.5 MB. Max. memory is 16.1 GB. [2020-12-09 10:41:32,901 INFO L168 Benchmark]: TraceAbstraction took 6079.55 ms. Allocated memory was 174.1 MB in the beginning and 302.0 MB in the end (delta: 127.9 MB). Free memory was 137.8 MB in the beginning and 204.7 MB in the end (delta: -66.9 MB). Peak memory consumption was 174.3 MB. Max. memory is 16.1 GB. [2020-12-09 10:41:32,901 INFO L168 Benchmark]: Witness Printer took 128.84 ms. Allocated memory is still 302.0 MB. Free memory was 204.7 MB in the beginning and 190.0 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-12-09 10:41:32,904 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 132.1 MB. Free memory was 105.6 MB in the beginning and 105.6 MB in the end (delta: 26.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 417.53 ms. Allocated memory is still 132.1 MB. Free memory was 93.8 MB in the beginning and 88.7 MB in the end (delta: 5.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 55.03 ms. Allocated memory is still 132.1 MB. Free memory was 88.7 MB in the beginning and 83.1 MB in the end (delta: 5.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 48.44 ms. Allocated memory is still 132.1 MB. Free memory was 83.1 MB in the beginning and 78.1 MB in the end (delta: 5.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1297.29 ms. Allocated memory was 132.1 MB in the beginning and 174.1 MB in the end (delta: 41.9 MB). Free memory was 78.1 MB in the beginning and 138.8 MB in the end (delta: -60.7 MB). Peak memory consumption was 80.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6079.55 ms. Allocated memory was 174.1 MB in the beginning and 302.0 MB in the end (delta: 127.9 MB). Free memory was 137.8 MB in the beginning and 204.7 MB in the end (delta: -66.9 MB). Peak memory consumption was 174.3 MB. Max. memory is 16.1 GB. * Witness Printer took 128.84 ms. Allocated memory is still 302.0 MB. Free memory was 204.7 MB in the beginning and 190.0 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: 498]: 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: 40]: Loop Invariant Derived loop invariant: (((((((a16 <= 5 && !(a8 == 13)) || (a16 == 6 && a21 <= 0)) || ((((a21 == 1 && a12 == 8) && a20 == 1) && a16 == 4) && a17 == 1)) || ((((a21 == 1 && a12 == 8) && a20 == 1) && !(a7 == 1)) && a17 == 1)) || ((a16 == 6 && !(a8 == 13)) && !(a7 == 1))) || (a16 <= 5 && !(a7 == 1))) || ((!(a8 == 13) && a20 == 1) && !(a7 == 1))) || (a16 <= 5 && a21 <= 0) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: (((((((a16 <= 5 && !(a8 == 13)) || (a16 == 6 && a21 <= 0)) || ((((a21 == 1 && a12 == 8) && a20 == 1) && a16 == 4) && a17 == 1)) || ((((a21 == 1 && a12 == 8) && a20 == 1) && !(a7 == 1)) && a17 == 1)) || ((a16 == 6 && !(a8 == 13)) && !(a7 == 1))) || (a16 <= 5 && !(a7 == 1))) || ((!(a8 == 13) && a20 == 1) && !(a7 == 1))) || (a16 <= 5 && a21 <= 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.7s, OverallIterations: 10, TraceHistogramMax: 8, AutomataDifference: 3.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 464 SDtfs, 1007 SDslu, 56 SDs, 0 SdLazy, 2505 SolverSat, 717 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 979 GetRequests, 954 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1068occurred in iteration=9, 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, 10 MinimizatonAttempts, 923 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 38 NumberOfFragments, 177 HoareAnnotationTreeSize, 3 FomulaSimplifications, 5086 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 150 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 1925 NumberOfCodeBlocks, 1925 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 2384 ConstructedInterpolants, 0 QuantifiedInterpolants, 1543606 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1086 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 14 InterpolantComputations, 12 PerfectInterpolantSequences, 3158/3335 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...