./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label31.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_750bc00a-46c0-49f1-955e-25028c0eea82/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_750bc00a-46c0-49f1-955e-25028c0eea82/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_750bc00a-46c0-49f1-955e-25028c0eea82/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_750bc00a-46c0-49f1-955e-25028c0eea82/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label31.c -s /tmp/vcloud-vcloud-master/worker/run_dir_750bc00a-46c0-49f1-955e-25028c0eea82/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_750bc00a-46c0-49f1-955e-25028c0eea82/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 5dd4c4a8834c6f526493b06f6bf2b3c1eba582a5 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 18:44:26,071 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 18:44:26,072 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 18:44:26,100 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 18:44:26,100 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 18:44:26,101 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 18:44:26,103 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 18:44:26,105 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 18:44:26,107 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 18:44:26,108 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 18:44:26,109 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 18:44:26,111 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 18:44:26,111 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 18:44:26,112 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 18:44:26,113 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 18:44:26,115 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 18:44:26,116 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 18:44:26,117 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 18:44:26,119 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 18:44:26,121 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 18:44:26,123 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 18:44:26,124 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 18:44:26,126 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 18:44:26,126 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 18:44:26,129 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 18:44:26,130 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 18:44:26,130 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 18:44:26,131 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 18:44:26,132 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 18:44:26,133 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 18:44:26,133 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 18:44:26,134 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 18:44:26,135 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 18:44:26,135 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 18:44:26,136 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 18:44:26,137 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 18:44:26,137 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 18:44:26,137 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 18:44:26,138 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 18:44:26,138 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 18:44:26,139 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 18:44:26,140 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_750bc00a-46c0-49f1-955e-25028c0eea82/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 18:44:26,160 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 18:44:26,161 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 18:44:26,161 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 18:44:26,161 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 18:44:26,162 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 18:44:26,162 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 18:44:26,162 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 18:44:26,162 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 18:44:26,162 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 18:44:26,163 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 18:44:26,163 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 18:44:26,163 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 18:44:26,163 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 18:44:26,163 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 18:44:26,164 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 18:44:26,164 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 18:44:26,164 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 18:44:26,165 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 18:44:26,165 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 18:44:26,165 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 18:44:26,165 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 18:44:26,165 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 18:44:26,165 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 18:44:26,166 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 18:44:26,166 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 18:44:26,166 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 18:44:26,166 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 18:44:26,166 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 18:44:26,166 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 18:44:26,167 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 18:44:26,167 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 18:44:26,167 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 18:44:26,167 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 18:44:26,167 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 18:44:26,168 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 18:44:26,168 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 18:44:26,168 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 18:44:26,168 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 18:44:26,168 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 18:44:26,169 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_750bc00a-46c0-49f1-955e-25028c0eea82/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_750bc00a-46c0-49f1-955e-25028c0eea82/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5dd4c4a8834c6f526493b06f6bf2b3c1eba582a5 [2020-12-09 18:44:26,351 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 18:44:26,368 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 18:44:26,369 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 18:44:26,370 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 18:44:26,371 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 18:44:26,371 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_750bc00a-46c0-49f1-955e-25028c0eea82/bin/utaipan/../../sv-benchmarks/c/eca-rers2012/Problem02_label31.c [2020-12-09 18:44:26,414 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_750bc00a-46c0-49f1-955e-25028c0eea82/bin/utaipan/data/dd84f7278/807bcb73d9fb40dd896c056c6a596f59/FLAG17888b402 [2020-12-09 18:44:26,828 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 18:44:26,829 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_750bc00a-46c0-49f1-955e-25028c0eea82/sv-benchmarks/c/eca-rers2012/Problem02_label31.c [2020-12-09 18:44:26,837 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_750bc00a-46c0-49f1-955e-25028c0eea82/bin/utaipan/data/dd84f7278/807bcb73d9fb40dd896c056c6a596f59/FLAG17888b402 [2020-12-09 18:44:26,847 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_750bc00a-46c0-49f1-955e-25028c0eea82/bin/utaipan/data/dd84f7278/807bcb73d9fb40dd896c056c6a596f59 [2020-12-09 18:44:26,849 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 18:44:26,850 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 18:44:26,851 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 18:44:26,851 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 18:44:26,854 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 18:44:26,855 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:44:26" (1/1) ... [2020-12-09 18:44:26,856 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51dd0029 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:44:26, skipping insertion in model container [2020-12-09 18:44:26,857 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:44:26" (1/1) ... [2020-12-09 18:44:26,863 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 18:44:26,898 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 18:44:27,109 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_750bc00a-46c0-49f1-955e-25028c0eea82/sv-benchmarks/c/eca-rers2012/Problem02_label31.c[18601,18614] [2020-12-09 18:44:27,126 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 18:44:27,132 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 18:44:27,180 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_750bc00a-46c0-49f1-955e-25028c0eea82/sv-benchmarks/c/eca-rers2012/Problem02_label31.c[18601,18614] [2020-12-09 18:44:27,188 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 18:44:27,198 INFO L208 MainTranslator]: Completed translation [2020-12-09 18:44:27,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:44:27 WrapperNode [2020-12-09 18:44:27,199 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 18:44:27,199 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 18:44:27,200 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 18:44:27,200 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 18:44:27,206 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:44:27" (1/1) ... [2020-12-09 18:44:27,225 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:44:27" (1/1) ... [2020-12-09 18:44:27,264 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 18:44:27,265 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 18:44:27,265 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 18:44:27,265 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 18:44:27,271 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:44:27" (1/1) ... [2020-12-09 18:44:27,271 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:44:27" (1/1) ... [2020-12-09 18:44:27,274 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:44:27" (1/1) ... [2020-12-09 18:44:27,274 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:44:27" (1/1) ... [2020-12-09 18:44:27,288 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:44:27" (1/1) ... [2020-12-09 18:44:27,296 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:44:27" (1/1) ... [2020-12-09 18:44:27,301 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:44:27" (1/1) ... [2020-12-09 18:44:27,307 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 18:44:27,307 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 18:44:27,307 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 18:44:27,307 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 18:44:27,308 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:44:27" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_750bc00a-46c0-49f1-955e-25028c0eea82/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 18:44:27,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 18:44:27,375 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 18:44:27,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 18:44:27,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 18:44:28,635 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 18:44:28,636 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-09 18:44:28,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:44:28 BoogieIcfgContainer [2020-12-09 18:44:28,638 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 18:44:28,639 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 18:44:28,639 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 18:44:28,641 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 18:44:28,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 06:44:26" (1/3) ... [2020-12-09 18:44:28,642 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f7043c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:44:28, skipping insertion in model container [2020-12-09 18:44:28,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:44:27" (2/3) ... [2020-12-09 18:44:28,643 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f7043c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:44:28, skipping insertion in model container [2020-12-09 18:44:28,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:44:28" (3/3) ... [2020-12-09 18:44:28,644 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem02_label31.c [2020-12-09 18:44:28,658 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 18:44:28,661 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 18:44:28,672 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 18:44:28,696 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 18:44:28,696 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 18:44:28,696 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 18:44:28,696 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 18:44:28,697 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 18:44:28,697 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 18:44:28,697 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 18:44:28,697 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 18:44:28,709 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states. [2020-12-09 18:44:28,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-09 18:44:28,715 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:44:28,716 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:44:28,716 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:44:28,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:44:28,721 INFO L82 PathProgramCache]: Analyzing trace with hash 925957391, now seen corresponding path program 1 times [2020-12-09 18:44:28,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 18:44:28,731 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351365045] [2020-12-09 18:44:28,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 18:44:28,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:44:29,024 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 18:44:29,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351365045] [2020-12-09 18:44:29,025 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:44:29,025 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 18:44:29,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796192699] [2020-12-09 18:44:29,029 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 18:44:29,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 18:44:29,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 18:44:29,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 18:44:29,042 INFO L87 Difference]: Start difference. First operand 85 states. Second operand 3 states. [2020-12-09 18:44:29,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:44:29,386 INFO L93 Difference]: Finished difference Result 251 states and 482 transitions. [2020-12-09 18:44:29,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 18:44:29,388 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-12-09 18:44:29,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:44:29,401 INFO L225 Difference]: With dead ends: 251 [2020-12-09 18:44:29,401 INFO L226 Difference]: Without dead ends: 163 [2020-12-09 18:44:29,404 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 18:44:29,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-12-09 18:44:29,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2020-12-09 18:44:29,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-12-09 18:44:29,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 298 transitions. [2020-12-09 18:44:29,451 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 298 transitions. Word has length 80 [2020-12-09 18:44:29,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:44:29,452 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 298 transitions. [2020-12-09 18:44:29,452 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 18:44:29,452 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 298 transitions. [2020-12-09 18:44:29,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-12-09 18:44:29,455 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:44:29,456 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:44:29,456 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 18:44:29,456 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:44:29,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:44:29,457 INFO L82 PathProgramCache]: Analyzing trace with hash 1028678148, now seen corresponding path program 1 times [2020-12-09 18:44:29,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 18:44:29,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902698580] [2020-12-09 18:44:29,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 18:44:29,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:44:29,505 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 18:44:29,505 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902698580] [2020-12-09 18:44:29,506 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:44:29,506 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 18:44:29,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184157037] [2020-12-09 18:44:29,507 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 18:44:29,507 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 18:44:29,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 18:44:29,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 18:44:29,508 INFO L87 Difference]: Start difference. First operand 163 states and 298 transitions. Second operand 3 states. [2020-12-09 18:44:29,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:44:29,786 INFO L93 Difference]: Finished difference Result 485 states and 891 transitions. [2020-12-09 18:44:29,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 18:44:29,786 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 84 [2020-12-09 18:44:29,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:44:29,789 INFO L225 Difference]: With dead ends: 485 [2020-12-09 18:44:29,789 INFO L226 Difference]: Without dead ends: 323 [2020-12-09 18:44:29,790 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 18:44:29,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-12-09 18:44:29,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2020-12-09 18:44:29,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-12-09 18:44:29,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 488 transitions. [2020-12-09 18:44:29,806 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 488 transitions. Word has length 84 [2020-12-09 18:44:29,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:44:29,806 INFO L481 AbstractCegarLoop]: Abstraction has 323 states and 488 transitions. [2020-12-09 18:44:29,806 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 18:44:29,806 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 488 transitions. [2020-12-09 18:44:29,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-12-09 18:44:29,809 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:44:29,809 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:44:29,809 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 18:44:29,809 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:44:29,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:44:29,810 INFO L82 PathProgramCache]: Analyzing trace with hash 2137928029, now seen corresponding path program 1 times [2020-12-09 18:44:29,810 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 18:44:29,810 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379037527] [2020-12-09 18:44:29,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 18:44:29,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:44:29,858 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 18:44:29,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379037527] [2020-12-09 18:44:29,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [96428607] [2020-12-09 18:44:29,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_750bc00a-46c0-49f1-955e-25028c0eea82/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 18:44:29,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:44:29,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 18:44:29,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 18:44:30,032 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-12-09 18:44:30,032 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 18:44:30,103 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-12-09 18:44:30,103 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 18:44:30,103 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [3] total 4 [2020-12-09 18:44:30,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351135485] [2020-12-09 18:44:30,104 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 18:44:30,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 18:44:30,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 18:44:30,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 18:44:30,105 INFO L87 Difference]: Start difference. First operand 323 states and 488 transitions. Second operand 3 states. [2020-12-09 18:44:30,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:44:30,378 INFO L93 Difference]: Finished difference Result 565 states and 880 transitions. [2020-12-09 18:44:30,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 18:44:30,379 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 89 [2020-12-09 18:44:30,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:44:30,382 INFO L225 Difference]: With dead ends: 565 [2020-12-09 18:44:30,382 INFO L226 Difference]: Without dead ends: 563 [2020-12-09 18:44:30,382 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 18:44:30,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2020-12-09 18:44:30,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 403. [2020-12-09 18:44:30,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2020-12-09 18:44:30,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 643 transitions. [2020-12-09 18:44:30,398 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 643 transitions. Word has length 89 [2020-12-09 18:44:30,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:44:30,398 INFO L481 AbstractCegarLoop]: Abstraction has 403 states and 643 transitions. [2020-12-09 18:44:30,398 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 18:44:30,399 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 643 transitions. [2020-12-09 18:44:30,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-12-09 18:44:30,400 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:44:30,400 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:44:30,601 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-12-09 18:44:30,601 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:44:30,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:44:30,603 INFO L82 PathProgramCache]: Analyzing trace with hash -1427739817, now seen corresponding path program 1 times [2020-12-09 18:44:30,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 18:44:30,604 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275532660] [2020-12-09 18:44:30,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 18:44:30,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:44:30,666 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 18:44:30,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275532660] [2020-12-09 18:44:30,666 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:44:30,666 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 18:44:30,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788256491] [2020-12-09 18:44:30,667 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 18:44:30,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 18:44:30,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 18:44:30,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 18:44:30,668 INFO L87 Difference]: Start difference. First operand 403 states and 643 transitions. Second operand 3 states. [2020-12-09 18:44:30,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:44:30,821 INFO L93 Difference]: Finished difference Result 805 states and 1285 transitions. [2020-12-09 18:44:30,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 18:44:30,822 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 91 [2020-12-09 18:44:30,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:44:30,824 INFO L225 Difference]: With dead ends: 805 [2020-12-09 18:44:30,824 INFO L226 Difference]: Without dead ends: 403 [2020-12-09 18:44:30,825 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 18:44:30,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2020-12-09 18:44:30,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 403. [2020-12-09 18:44:30,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2020-12-09 18:44:30,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 588 transitions. [2020-12-09 18:44:30,839 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 588 transitions. Word has length 91 [2020-12-09 18:44:30,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:44:30,840 INFO L481 AbstractCegarLoop]: Abstraction has 403 states and 588 transitions. [2020-12-09 18:44:30,840 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 18:44:30,840 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 588 transitions. [2020-12-09 18:44:30,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-09 18:44:30,842 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:44:30,842 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:44:30,842 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 18:44:30,842 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:44:30,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:44:30,843 INFO L82 PathProgramCache]: Analyzing trace with hash -440296869, now seen corresponding path program 1 times [2020-12-09 18:44:30,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 18:44:30,843 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996720973] [2020-12-09 18:44:30,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 18:44:30,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:44:30,893 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-09 18:44:30,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996720973] [2020-12-09 18:44:30,894 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:44:30,894 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 18:44:30,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836989944] [2020-12-09 18:44:30,894 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 18:44:30,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 18:44:30,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 18:44:30,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 18:44:30,895 INFO L87 Difference]: Start difference. First operand 403 states and 588 transitions. Second operand 3 states. [2020-12-09 18:44:31,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:44:31,146 INFO L93 Difference]: Finished difference Result 885 states and 1350 transitions. [2020-12-09 18:44:31,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 18:44:31,146 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 111 [2020-12-09 18:44:31,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:44:31,148 INFO L225 Difference]: With dead ends: 885 [2020-12-09 18:44:31,149 INFO L226 Difference]: Without dead ends: 563 [2020-12-09 18:44:31,149 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 18:44:31,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2020-12-09 18:44:31,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 563. [2020-12-09 18:44:31,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 563 states. [2020-12-09 18:44:31,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 798 transitions. [2020-12-09 18:44:31,159 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 798 transitions. Word has length 111 [2020-12-09 18:44:31,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:44:31,160 INFO L481 AbstractCegarLoop]: Abstraction has 563 states and 798 transitions. [2020-12-09 18:44:31,160 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 18:44:31,160 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 798 transitions. [2020-12-09 18:44:31,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-12-09 18:44:31,161 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:44:31,161 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:44:31,162 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-09 18:44:31,162 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:44:31,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:44:31,162 INFO L82 PathProgramCache]: Analyzing trace with hash -1423415569, now seen corresponding path program 1 times [2020-12-09 18:44:31,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 18:44:31,162 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435979887] [2020-12-09 18:44:31,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 18:44:31,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:44:31,205 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2020-12-09 18:44:31,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435979887] [2020-12-09 18:44:31,206 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2003451842] [2020-12-09 18:44:31,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_750bc00a-46c0-49f1-955e-25028c0eea82/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 18:44:31,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:44:31,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 18:44:31,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 18:44:31,348 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-12-09 18:44:31,348 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 18:44:31,412 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-12-09 18:44:31,413 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 18:44:31,413 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 5 [2020-12-09 18:44:31,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501176378] [2020-12-09 18:44:31,413 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 18:44:31,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 18:44:31,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 18:44:31,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 18:44:31,414 INFO L87 Difference]: Start difference. First operand 563 states and 798 transitions. Second operand 3 states. [2020-12-09 18:44:31,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:44:31,680 INFO L93 Difference]: Finished difference Result 1365 states and 1995 transitions. [2020-12-09 18:44:31,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 18:44:31,680 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 133 [2020-12-09 18:44:31,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:44:31,684 INFO L225 Difference]: With dead ends: 1365 [2020-12-09 18:44:31,684 INFO L226 Difference]: Without dead ends: 883 [2020-12-09 18:44:31,685 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 263 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 18:44:31,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2020-12-09 18:44:31,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 883. [2020-12-09 18:44:31,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 883 states. [2020-12-09 18:44:31,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1183 transitions. [2020-12-09 18:44:31,704 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1183 transitions. Word has length 133 [2020-12-09 18:44:31,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:44:31,704 INFO L481 AbstractCegarLoop]: Abstraction has 883 states and 1183 transitions. [2020-12-09 18:44:31,705 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 18:44:31,705 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1183 transitions. [2020-12-09 18:44:31,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-12-09 18:44:31,707 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:44:31,707 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:44:31,907 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 18:44:31,908 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:44:31,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:44:31,908 INFO L82 PathProgramCache]: Analyzing trace with hash -1142801911, now seen corresponding path program 1 times [2020-12-09 18:44:31,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 18:44:31,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897602364] [2020-12-09 18:44:31,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 18:44:31,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:44:31,983 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-12-09 18:44:31,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897602364] [2020-12-09 18:44:31,984 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:44:31,984 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 18:44:31,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445377891] [2020-12-09 18:44:31,985 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 18:44:31,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 18:44:31,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 18:44:31,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 18:44:31,986 INFO L87 Difference]: Start difference. First operand 883 states and 1183 transitions. Second operand 5 states. [2020-12-09 18:44:32,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:44:32,426 INFO L93 Difference]: Finished difference Result 1961 states and 2591 transitions. [2020-12-09 18:44:32,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 18:44:32,426 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 135 [2020-12-09 18:44:32,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:44:32,432 INFO L225 Difference]: With dead ends: 1961 [2020-12-09 18:44:32,432 INFO L226 Difference]: Without dead ends: 993 [2020-12-09 18:44:32,434 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-09 18:44:32,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 993 states. [2020-12-09 18:44:32,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 993 to 883. [2020-12-09 18:44:32,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 883 states. [2020-12-09 18:44:32,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1099 transitions. [2020-12-09 18:44:32,457 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1099 transitions. Word has length 135 [2020-12-09 18:44:32,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:44:32,457 INFO L481 AbstractCegarLoop]: Abstraction has 883 states and 1099 transitions. [2020-12-09 18:44:32,457 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 18:44:32,457 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1099 transitions. [2020-12-09 18:44:32,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-12-09 18:44:32,459 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:44:32,459 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:44:32,459 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-09 18:44:32,459 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:44:32,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:44:32,459 INFO L82 PathProgramCache]: Analyzing trace with hash 2089853907, now seen corresponding path program 1 times [2020-12-09 18:44:32,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 18:44:32,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972517350] [2020-12-09 18:44:32,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 18:44:32,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:44:32,544 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 64 proven. 8 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-12-09 18:44:32,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972517350] [2020-12-09 18:44:32,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430524608] [2020-12-09 18:44:32,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_750bc00a-46c0-49f1-955e-25028c0eea82/bin/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 18:44:32,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:44:32,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 18:44:32,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 18:44:32,698 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-12-09 18:44:32,698 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 18:44:32,767 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-12-09 18:44:32,768 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 18:44:32,768 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2020-12-09 18:44:32,768 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498361462] [2020-12-09 18:44:32,769 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 18:44:32,769 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 18:44:32,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 18:44:32,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-09 18:44:32,769 INFO L87 Difference]: Start difference. First operand 883 states and 1099 transitions. Second operand 3 states. [2020-12-09 18:44:32,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:44:32,970 INFO L93 Difference]: Finished difference Result 1925 states and 2458 transitions. [2020-12-09 18:44:32,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 18:44:32,970 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 139 [2020-12-09 18:44:32,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:44:32,974 INFO L225 Difference]: With dead ends: 1925 [2020-12-09 18:44:32,975 INFO L226 Difference]: Without dead ends: 1123 [2020-12-09 18:44:32,976 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 275 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-09 18:44:32,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1123 states. [2020-12-09 18:44:32,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1123 to 1043. [2020-12-09 18:44:32,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1043 states. [2020-12-09 18:44:32,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1043 states to 1043 states and 1277 transitions. [2020-12-09 18:44:32,992 INFO L78 Accepts]: Start accepts. Automaton has 1043 states and 1277 transitions. Word has length 139 [2020-12-09 18:44:32,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:44:32,993 INFO L481 AbstractCegarLoop]: Abstraction has 1043 states and 1277 transitions. [2020-12-09 18:44:32,993 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 18:44:32,993 INFO L276 IsEmpty]: Start isEmpty. Operand 1043 states and 1277 transitions. [2020-12-09 18:44:32,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-12-09 18:44:32,995 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:44:32,995 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:44:33,196 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 18:44:33,197 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:44:33,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:44:33,197 INFO L82 PathProgramCache]: Analyzing trace with hash 867770499, now seen corresponding path program 1 times [2020-12-09 18:44:33,198 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 18:44:33,198 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5818188] [2020-12-09 18:44:33,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 18:44:33,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:44:33,296 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 87 proven. 8 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2020-12-09 18:44:33,296 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5818188] [2020-12-09 18:44:33,296 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703131076] [2020-12-09 18:44:33,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_750bc00a-46c0-49f1-955e-25028c0eea82/bin/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 18:44:33,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:44:33,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 18:44:33,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 18:44:33,456 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-12-09 18:44:33,457 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 18:44:33,528 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-12-09 18:44:33,529 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 18:44:33,529 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2020-12-09 18:44:33,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465286464] [2020-12-09 18:44:33,529 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 18:44:33,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 18:44:33,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 18:44:33,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-09 18:44:33,530 INFO L87 Difference]: Start difference. First operand 1043 states and 1277 transitions. Second operand 3 states. [2020-12-09 18:44:33,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:44:33,726 INFO L93 Difference]: Finished difference Result 2163 states and 2687 transitions. [2020-12-09 18:44:33,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 18:44:33,727 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 154 [2020-12-09 18:44:33,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:44:33,727 INFO L225 Difference]: With dead ends: 2163 [2020-12-09 18:44:33,727 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 18:44:33,729 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 305 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-09 18:44:33,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 18:44:33,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 18:44:33,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 18:44:33,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 18:44:33,729 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 154 [2020-12-09 18:44:33,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:44:33,729 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 18:44:33,730 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 18:44:33,730 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 18:44:33,730 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 18:44:33,930 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 18:44:33,936 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 18:44:34,089 INFO L262 CegarLoopResult]: For program point L301(lines 301 423) no Hoare annotation was computed. [2020-12-09 18:44:34,089 INFO L262 CegarLoopResult]: For program point L235(lines 235 423) no Hoare annotation was computed. [2020-12-09 18:44:34,089 INFO L262 CegarLoopResult]: For program point L169(lines 169 423) no Hoare annotation was computed. [2020-12-09 18:44:34,089 INFO L262 CegarLoopResult]: For program point L303(lines 303 423) no Hoare annotation was computed. [2020-12-09 18:44:34,089 INFO L262 CegarLoopResult]: For program point L105(lines 105 423) no Hoare annotation was computed. [2020-12-09 18:44:34,089 INFO L262 CegarLoopResult]: For program point L40(lines 40 423) no Hoare annotation was computed. [2020-12-09 18:44:34,089 INFO L262 CegarLoopResult]: For program point L371(lines 371 423) no Hoare annotation was computed. [2020-12-09 18:44:34,089 INFO L262 CegarLoopResult]: For program point L307(lines 307 423) no Hoare annotation was computed. [2020-12-09 18:44:34,089 INFO L262 CegarLoopResult]: For program point L175(lines 175 423) no Hoare annotation was computed. [2020-12-09 18:44:34,089 INFO L262 CegarLoopResult]: For program point L109(lines 109 423) no Hoare annotation was computed. [2020-12-09 18:44:34,089 INFO L262 CegarLoopResult]: For program point L242(lines 242 423) no Hoare annotation was computed. [2020-12-09 18:44:34,090 INFO L262 CegarLoopResult]: For program point L45(lines 45 423) no Hoare annotation was computed. [2020-12-09 18:44:34,090 INFO L262 CegarLoopResult]: For program point L244(lines 244 423) no Hoare annotation was computed. [2020-12-09 18:44:34,090 INFO L262 CegarLoopResult]: For program point L179(lines 179 423) no Hoare annotation was computed. [2020-12-09 18:44:34,090 INFO L262 CegarLoopResult]: For program point L378(lines 378 423) no Hoare annotation was computed. [2020-12-09 18:44:34,090 INFO L262 CegarLoopResult]: For program point L48(lines 48 423) no Hoare annotation was computed. [2020-12-09 18:44:34,090 INFO L262 CegarLoopResult]: For program point L247(lines 247 423) no Hoare annotation was computed. [2020-12-09 18:44:34,090 INFO L262 CegarLoopResult]: For program point L116(lines 116 423) no Hoare annotation was computed. [2020-12-09 18:44:34,090 INFO L262 CegarLoopResult]: For program point L52(lines 52 423) no Hoare annotation was computed. [2020-12-09 18:44:34,090 INFO L262 CegarLoopResult]: For program point L185(lines 185 423) no Hoare annotation was computed. [2020-12-09 18:44:34,090 INFO L262 CegarLoopResult]: For program point L385(lines 385 423) no Hoare annotation was computed. [2020-12-09 18:44:34,090 INFO L262 CegarLoopResult]: For program point L319(lines 319 423) no Hoare annotation was computed. [2020-12-09 18:44:34,090 INFO L262 CegarLoopResult]: For program point L189(lines 189 423) no Hoare annotation was computed. [2020-12-09 18:44:34,090 INFO L262 CegarLoopResult]: For program point L123(lines 123 423) no Hoare annotation was computed. [2020-12-09 18:44:34,090 INFO L262 CegarLoopResult]: For program point L57(lines 57 423) no Hoare annotation was computed. [2020-12-09 18:44:34,090 INFO L262 CegarLoopResult]: For program point L388(lines 388 423) no Hoare annotation was computed. [2020-12-09 18:44:34,090 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 18:44:34,090 INFO L262 CegarLoopResult]: For program point L390(lines 390 423) no Hoare annotation was computed. [2020-12-09 18:44:34,091 INFO L262 CegarLoopResult]: For program point L324(lines 324 423) no Hoare annotation was computed. [2020-12-09 18:44:34,091 INFO L262 CegarLoopResult]: For program point L258(lines 258 423) no Hoare annotation was computed. [2020-12-09 18:44:34,091 INFO L262 CegarLoopResult]: For program point L60(lines 60 423) no Hoare annotation was computed. [2020-12-09 18:44:34,091 INFO L262 CegarLoopResult]: For program point L195(lines 195 423) no Hoare annotation was computed. [2020-12-09 18:44:34,091 INFO L262 CegarLoopResult]: For program point L129(lines 129 423) no Hoare annotation was computed. [2020-12-09 18:44:34,091 INFO L262 CegarLoopResult]: For program point L526-1(lines 39 608) no Hoare annotation was computed. [2020-12-09 18:44:34,091 INFO L262 CegarLoopResult]: For program point L64(lines 64 423) no Hoare annotation was computed. [2020-12-09 18:44:34,091 INFO L262 CegarLoopResult]: For program point L263(lines 263 423) no Hoare annotation was computed. [2020-12-09 18:44:34,091 INFO L262 CegarLoopResult]: For program point L197(lines 197 423) no Hoare annotation was computed. [2020-12-09 18:44:34,091 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 530) no Hoare annotation was computed. [2020-12-09 18:44:34,091 INFO L262 CegarLoopResult]: For program point L529-1(lines 39 608) no Hoare annotation was computed. [2020-12-09 18:44:34,091 INFO L262 CegarLoopResult]: For program point L199(lines 199 423) no Hoare annotation was computed. [2020-12-09 18:44:34,091 INFO L262 CegarLoopResult]: For program point L133(lines 133 423) no Hoare annotation was computed. [2020-12-09 18:44:34,091 INFO L262 CegarLoopResult]: For program point L530(line 530) no Hoare annotation was computed. [2020-12-09 18:44:34,091 INFO L262 CegarLoopResult]: For program point L399(lines 399 423) no Hoare annotation was computed. [2020-12-09 18:44:34,091 INFO L262 CegarLoopResult]: For program point L201(lines 201 423) no Hoare annotation was computed. [2020-12-09 18:44:34,091 INFO L262 CegarLoopResult]: For program point L69(lines 69 423) no Hoare annotation was computed. [2020-12-09 18:44:34,092 INFO L262 CegarLoopResult]: For program point L269(lines 269 423) no Hoare annotation was computed. [2020-12-09 18:44:34,092 INFO L262 CegarLoopResult]: For program point L204(lines 204 423) no Hoare annotation was computed. [2020-12-09 18:44:34,092 INFO L262 CegarLoopResult]: For program point L271(lines 271 423) no Hoare annotation was computed. [2020-12-09 18:44:34,092 INFO L262 CegarLoopResult]: For program point L404(lines 404 423) no Hoare annotation was computed. [2020-12-09 18:44:34,092 INFO L262 CegarLoopResult]: For program point L338(lines 338 423) no Hoare annotation was computed. [2020-12-09 18:44:34,092 INFO L262 CegarLoopResult]: For program point L140(lines 140 423) no Hoare annotation was computed. [2020-12-09 18:44:34,092 INFO L262 CegarLoopResult]: For program point L75(lines 75 423) no Hoare annotation was computed. [2020-12-09 18:44:34,092 INFO L262 CegarLoopResult]: For program point L208(lines 208 423) no Hoare annotation was computed. [2020-12-09 18:44:34,092 INFO L262 CegarLoopResult]: For program point L341(lines 341 423) no Hoare annotation was computed. [2020-12-09 18:44:34,092 INFO L262 CegarLoopResult]: For program point L408(lines 408 423) no Hoare annotation was computed. [2020-12-09 18:44:34,092 INFO L262 CegarLoopResult]: For program point L144(lines 144 423) no Hoare annotation was computed. [2020-12-09 18:44:34,092 INFO L258 CegarLoopResult]: At program point L607(lines 39 608) the Hoare annotation is: (let ((.cse1 (= ~a19~0 1)) (.cse2 (<= 8 ~a17~0)) (.cse0 (<= ~a17~0 8)) (.cse3 (<= ~a28~0 7))) (or (and (<= 9 ~a28~0) .cse0) (and .cse1 (= ~a21~0 1) .cse2 .cse0) (and (= ~a25~0 ~a11~0) .cse1 .cse0 .cse3) (and (= ~a25~0 0) .cse0) (and .cse2 .cse0 .cse3))) [2020-12-09 18:44:34,092 INFO L262 CegarLoopResult]: For program point L79(lines 79 423) no Hoare annotation was computed. [2020-12-09 18:44:34,092 INFO L262 CegarLoopResult]: For program point L212(lines 212 423) no Hoare annotation was computed. [2020-12-09 18:44:34,093 INFO L265 CegarLoopResult]: At program point L610(lines 610 627) the Hoare annotation is: true [2020-12-09 18:44:34,093 INFO L262 CegarLoopResult]: For program point L412(lines 412 423) no Hoare annotation was computed. [2020-12-09 18:44:34,093 INFO L262 CegarLoopResult]: For program point L347(lines 347 423) no Hoare annotation was computed. [2020-12-09 18:44:34,093 INFO L262 CegarLoopResult]: For program point L149(lines 149 423) no Hoare annotation was computed. [2020-12-09 18:44:34,093 INFO L262 CegarLoopResult]: For program point L414(lines 414 423) no Hoare annotation was computed. [2020-12-09 18:44:34,093 INFO L262 CegarLoopResult]: For program point L84(lines 84 423) no Hoare annotation was computed. [2020-12-09 18:44:34,093 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 18:44:34,093 INFO L262 CegarLoopResult]: For program point L417(lines 417 423) no Hoare annotation was computed. [2020-12-09 18:44:34,093 INFO L262 CegarLoopResult]: For program point L153(lines 153 423) no Hoare annotation was computed. [2020-12-09 18:44:34,093 INFO L258 CegarLoopResult]: At program point L616-2(lines 616 626) the Hoare annotation is: (let ((.cse1 (= ~a19~0 1)) (.cse2 (<= 8 ~a17~0)) (.cse0 (<= ~a17~0 8)) (.cse3 (<= ~a28~0 7))) (or (and (<= 9 ~a28~0) .cse0) (and .cse1 (= ~a21~0 1) .cse2 .cse0) (and (= ~a25~0 ~a11~0) .cse1 .cse0 .cse3) (and (= ~a25~0 0) .cse0) (and .cse2 .cse0 .cse3))) [2020-12-09 18:44:34,093 INFO L262 CegarLoopResult]: For program point L286(lines 286 423) no Hoare annotation was computed. [2020-12-09 18:44:34,093 INFO L262 CegarLoopResult]: For program point L419(lines 419 423) no Hoare annotation was computed. [2020-12-09 18:44:34,093 INFO L262 CegarLoopResult]: For program point L222(lines 222 423) no Hoare annotation was computed. [2020-12-09 18:44:34,093 INFO L262 CegarLoopResult]: For program point L290(lines 290 423) no Hoare annotation was computed. [2020-12-09 18:44:34,093 INFO L262 CegarLoopResult]: For program point L158(lines 158 423) no Hoare annotation was computed. [2020-12-09 18:44:34,093 INFO L262 CegarLoopResult]: For program point L92(lines 92 423) no Hoare annotation was computed. [2020-12-09 18:44:34,094 INFO L262 CegarLoopResult]: For program point L621(line 621) no Hoare annotation was computed. [2020-12-09 18:44:34,094 INFO L262 CegarLoopResult]: For program point L225(lines 225 423) no Hoare annotation was computed. [2020-12-09 18:44:34,094 INFO L262 CegarLoopResult]: For program point L359(lines 359 423) no Hoare annotation was computed. [2020-12-09 18:44:34,094 INFO L262 CegarLoopResult]: For program point L293(lines 293 423) no Hoare annotation was computed. [2020-12-09 18:44:34,094 INFO L262 CegarLoopResult]: For program point L228(lines 228 423) no Hoare annotation was computed. [2020-12-09 18:44:34,094 INFO L262 CegarLoopResult]: For program point L296(lines 296 423) no Hoare annotation was computed. [2020-12-09 18:44:34,094 INFO L262 CegarLoopResult]: For program point L164(lines 164 423) no Hoare annotation was computed. [2020-12-09 18:44:34,094 INFO L262 CegarLoopResult]: For program point L364(lines 364 423) no Hoare annotation was computed. [2020-12-09 18:44:34,094 INFO L262 CegarLoopResult]: For program point L233(lines 233 423) no Hoare annotation was computed. [2020-12-09 18:44:34,094 INFO L262 CegarLoopResult]: For program point L101(lines 101 423) no Hoare annotation was computed. [2020-12-09 18:44:34,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 06:44:34 BoogieIcfgContainer [2020-12-09 18:44:34,106 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 18:44:34,106 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 18:44:34,106 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 18:44:34,106 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 18:44:34,106 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:44:28" (3/4) ... [2020-12-09 18:44:34,108 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 18:44:34,123 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 113 nodes and edges [2020-12-09 18:44:34,125 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2020-12-09 18:44:34,126 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-12-09 18:44:34,127 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-12-09 18:44:34,204 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_750bc00a-46c0-49f1-955e-25028c0eea82/bin/utaipan/witness.graphml [2020-12-09 18:44:34,205 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 18:44:34,206 INFO L168 Benchmark]: Toolchain (without parser) took 7355.08 ms. Allocated memory was 88.1 MB in the beginning and 249.6 MB in the end (delta: 161.5 MB). Free memory was 63.2 MB in the beginning and 128.2 MB in the end (delta: -64.9 MB). Peak memory consumption was 96.0 MB. Max. memory is 16.1 GB. [2020-12-09 18:44:34,206 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 88.1 MB. Free memory is still 61.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 18:44:34,206 INFO L168 Benchmark]: CACSL2BoogieTranslator took 348.15 ms. Allocated memory is still 88.1 MB. Free memory was 63.1 MB in the beginning and 53.1 MB in the end (delta: 10.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-12-09 18:44:34,207 INFO L168 Benchmark]: Boogie Procedure Inliner took 64.54 ms. Allocated memory is still 88.1 MB. Free memory was 53.1 MB in the beginning and 47.7 MB in the end (delta: 5.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-12-09 18:44:34,207 INFO L168 Benchmark]: Boogie Preprocessor took 42.19 ms. Allocated memory is still 88.1 MB. Free memory was 47.7 MB in the beginning and 43.2 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 18:44:34,207 INFO L168 Benchmark]: RCFGBuilder took 1330.47 ms. Allocated memory was 88.1 MB in the beginning and 142.6 MB in the end (delta: 54.5 MB). Free memory was 43.2 MB in the beginning and 97.2 MB in the end (delta: -54.0 MB). Peak memory consumption was 42.0 MB. Max. memory is 16.1 GB. [2020-12-09 18:44:34,207 INFO L168 Benchmark]: TraceAbstraction took 5466.81 ms. Allocated memory was 142.6 MB in the beginning and 249.6 MB in the end (delta: 107.0 MB). Free memory was 96.2 MB in the beginning and 142.8 MB in the end (delta: -46.7 MB). Peak memory consumption was 60.3 MB. Max. memory is 16.1 GB. [2020-12-09 18:44:34,208 INFO L168 Benchmark]: Witness Printer took 98.67 ms. Allocated memory is still 249.6 MB. Free memory was 142.8 MB in the beginning and 128.2 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-12-09 18:44:34,209 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 88.1 MB. Free memory is still 61.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 348.15 ms. Allocated memory is still 88.1 MB. Free memory was 63.1 MB in the beginning and 53.1 MB in the end (delta: 10.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 64.54 ms. Allocated memory is still 88.1 MB. Free memory was 53.1 MB in the beginning and 47.7 MB in the end (delta: 5.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 42.19 ms. Allocated memory is still 88.1 MB. Free memory was 47.7 MB in the beginning and 43.2 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1330.47 ms. Allocated memory was 88.1 MB in the beginning and 142.6 MB in the end (delta: 54.5 MB). Free memory was 43.2 MB in the beginning and 97.2 MB in the end (delta: -54.0 MB). Peak memory consumption was 42.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5466.81 ms. Allocated memory was 142.6 MB in the beginning and 249.6 MB in the end (delta: 107.0 MB). Free memory was 96.2 MB in the beginning and 142.8 MB in the end (delta: -46.7 MB). Peak memory consumption was 60.3 MB. Max. memory is 16.1 GB. * Witness Printer took 98.67 ms. Allocated memory is still 249.6 MB. Free memory was 142.8 MB in the beginning and 128.2 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: 530]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 610]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 616]: Loop Invariant Derived loop invariant: ((((9 <= a28 && a17 <= 8) || (((a19 == 1 && a21 == 1) && 8 <= a17) && a17 <= 8)) || (((a25 == a11 && a19 == 1) && a17 <= 8) && a28 <= 7)) || (a25 == 0 && a17 <= 8)) || ((8 <= a17 && a17 <= 8) && a28 <= 7) - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: ((((9 <= a28 && a17 <= 8) || (((a19 == 1 && a21 == 1) && 8 <= a17) && a17 <= 8)) || (((a25 == a11 && a19 == 1) && a17 <= 8) && a28 <= 7)) || (a25 == 0 && a17 <= 8)) || ((8 <= a17 && a17 <= 8) && a28 <= 7) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.2s, OverallIterations: 9, TraceHistogramMax: 5, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 459 SDtfs, 685 SDslu, 59 SDs, 0 SdLazy, 2172 SolverSat, 602 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1050 GetRequests, 1023 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1043occurred in iteration=8, 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, 9 MinimizatonAttempts, 350 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 43 NumberOfFragments, 103 HoareAnnotationTreeSize, 3 FomulaSimplifications, 1408 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 26 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 1531 NumberOfCodeBlocks, 1531 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 2029 ConstructedInterpolants, 0 QuantifiedInterpolants, 596051 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1338 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 17 InterpolantComputations, 13 PerfectInterpolantSequences, 1158/1180 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...