./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label59.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_e9d3ddb9-0bf3-4e6b-92e2-6e2c83630b4e/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_e9d3ddb9-0bf3-4e6b-92e2-6e2c83630b4e/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e9d3ddb9-0bf3-4e6b-92e2-6e2c83630b4e/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e9d3ddb9-0bf3-4e6b-92e2-6e2c83630b4e/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label59.c -s /tmp/vcloud-vcloud-master/worker/run_dir_e9d3ddb9-0bf3-4e6b-92e2-6e2c83630b4e/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e9d3ddb9-0bf3-4e6b-92e2-6e2c83630b4e/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 32dcd17dd6150ce526d1225c284848d771c5c1e8 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 01:39:16,491 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 01:39:16,493 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 01:39:16,558 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 01:39:16,559 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 01:39:16,560 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 01:39:16,566 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 01:39:16,585 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 01:39:16,588 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 01:39:16,590 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 01:39:16,592 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 01:39:16,595 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 01:39:16,596 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 01:39:16,602 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 01:39:16,605 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 01:39:16,607 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 01:39:16,608 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 01:39:16,611 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 01:39:16,617 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 01:39:16,622 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 01:39:16,627 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 01:39:16,629 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 01:39:16,631 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 01:39:16,632 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 01:39:16,639 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 01:39:16,639 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 01:39:16,640 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 01:39:16,642 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 01:39:16,643 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 01:39:16,644 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 01:39:16,645 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 01:39:16,646 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 01:39:16,648 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 01:39:16,650 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 01:39:16,651 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 01:39:16,652 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 01:39:16,653 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 01:39:16,653 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 01:39:16,653 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 01:39:16,654 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 01:39:16,655 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 01:39:16,658 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e9d3ddb9-0bf3-4e6b-92e2-6e2c83630b4e/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-30 01:39:16,709 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 01:39:16,710 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 01:39:16,711 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 01:39:16,711 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 01:39:16,712 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 01:39:16,712 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 01:39:16,712 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-30 01:39:16,712 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 01:39:16,713 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 01:39:16,713 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-30 01:39:16,714 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-30 01:39:16,714 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 01:39:16,714 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-30 01:39:16,715 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-30 01:39:16,715 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-30 01:39:16,716 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 01:39:16,716 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 01:39:16,716 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 01:39:16,717 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 01:39:16,717 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 01:39:16,717 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 01:39:16,717 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 01:39:16,718 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 01:39:16,718 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 01:39:16,718 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 01:39:16,718 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 01:39:16,718 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 01:39:16,719 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 01:39:16,719 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 01:39:16,721 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 01:39:16,721 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 01:39:16,721 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 01:39:16,722 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 01:39:16,722 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 01:39:16,722 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 01:39:16,722 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-30 01:39:16,722 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 01:39:16,723 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 01:39:16,723 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 01:39:16,723 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 01:39:16,723 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_e9d3ddb9-0bf3-4e6b-92e2-6e2c83630b4e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_e9d3ddb9-0bf3-4e6b-92e2-6e2c83630b4e/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 32dcd17dd6150ce526d1225c284848d771c5c1e8 [2020-11-30 01:39:17,009 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 01:39:17,052 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 01:39:17,056 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 01:39:17,057 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 01:39:17,058 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 01:39:17,059 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e9d3ddb9-0bf3-4e6b-92e2-6e2c83630b4e/bin/utaipan/../../sv-benchmarks/c/eca-rers2012/Problem01_label59.c [2020-11-30 01:39:17,139 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e9d3ddb9-0bf3-4e6b-92e2-6e2c83630b4e/bin/utaipan/data/f7721181c/f6d89848b20b4dc8b266e3af66acd4cf/FLAG4d8b57b20 [2020-11-30 01:39:17,816 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 01:39:17,816 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e9d3ddb9-0bf3-4e6b-92e2-6e2c83630b4e/sv-benchmarks/c/eca-rers2012/Problem01_label59.c [2020-11-30 01:39:17,829 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e9d3ddb9-0bf3-4e6b-92e2-6e2c83630b4e/bin/utaipan/data/f7721181c/f6d89848b20b4dc8b266e3af66acd4cf/FLAG4d8b57b20 [2020-11-30 01:39:18,068 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e9d3ddb9-0bf3-4e6b-92e2-6e2c83630b4e/bin/utaipan/data/f7721181c/f6d89848b20b4dc8b266e3af66acd4cf [2020-11-30 01:39:18,070 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 01:39:18,072 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 01:39:18,073 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 01:39:18,074 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 01:39:18,077 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 01:39:18,092 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:39:18" (1/1) ... [2020-11-30 01:39:18,100 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ec912ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:39:18, skipping insertion in model container [2020-11-30 01:39:18,100 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:39:18" (1/1) ... [2020-11-30 01:39:18,108 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 01:39:18,171 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 01:39:18,622 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:39:18,630 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 01:39:18,785 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:39:18,808 INFO L208 MainTranslator]: Completed translation [2020-11-30 01:39:18,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:39:18 WrapperNode [2020-11-30 01:39:18,808 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 01:39:18,809 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 01:39:18,810 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 01:39:18,810 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 01:39:18,833 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:39:18" (1/1) ... [2020-11-30 01:39:18,870 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:39:18" (1/1) ... [2020-11-30 01:39:18,940 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 01:39:18,942 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 01:39:18,942 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 01:39:18,943 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 01:39:18,951 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:39:18" (1/1) ... [2020-11-30 01:39:18,952 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:39:18" (1/1) ... [2020-11-30 01:39:18,965 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:39:18" (1/1) ... [2020-11-30 01:39:18,971 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:39:18" (1/1) ... [2020-11-30 01:39:19,008 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:39:18" (1/1) ... [2020-11-30 01:39:19,019 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:39:18" (1/1) ... [2020-11-30 01:39:19,038 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:39:18" (1/1) ... [2020-11-30 01:39:19,051 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 01:39:19,054 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 01:39:19,054 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 01:39:19,056 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 01:39:19,057 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:39:18" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e9d3ddb9-0bf3-4e6b-92e2-6e2c83630b4e/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 [2020-11-30 01:39:19,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 01:39:19,129 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 01:39:19,129 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 01:39:19,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 01:39:21,489 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 01:39:21,489 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-30 01:39:21,491 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:39:21 BoogieIcfgContainer [2020-11-30 01:39:21,492 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 01:39:21,493 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 01:39:21,493 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 01:39:21,497 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 01:39:21,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 01:39:18" (1/3) ... [2020-11-30 01:39:21,499 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b96da75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:39:21, skipping insertion in model container [2020-11-30 01:39:21,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:39:18" (2/3) ... [2020-11-30 01:39:21,499 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b96da75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:39:21, skipping insertion in model container [2020-11-30 01:39:21,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:39:21" (3/3) ... [2020-11-30 01:39:21,501 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label59.c [2020-11-30 01:39:21,511 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 01:39:21,516 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 01:39:21,527 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 01:39:21,562 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 01:39:21,562 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 01:39:21,562 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 01:39:21,562 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 01:39:21,563 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 01:39:21,563 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 01:39:21,563 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 01:39:21,563 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 01:39:21,583 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2020-11-30 01:39:21,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-11-30 01:39:21,592 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:39:21,593 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:39:21,593 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:39:21,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:39:21,601 INFO L82 PathProgramCache]: Analyzing trace with hash 1520704621, now seen corresponding path program 1 times [2020-11-30 01:39:21,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:39:21,611 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041013079] [2020-11-30 01:39:21,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:39:21,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:39:22,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:39:22,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041013079] [2020-11-30 01:39:22,050 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:39:22,051 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 01:39:22,051 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580903348] [2020-11-30 01:39:22,056 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 01:39:22,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:39:22,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 01:39:22,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:39:22,071 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 3 states. [2020-11-30 01:39:22,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:39:22,820 INFO L93 Difference]: Finished difference Result 224 states and 428 transitions. [2020-11-30 01:39:22,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 01:39:22,822 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2020-11-30 01:39:22,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:39:22,834 INFO L225 Difference]: With dead ends: 224 [2020-11-30 01:39:22,834 INFO L226 Difference]: Without dead ends: 145 [2020-11-30 01:39:22,838 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 [2020-11-30 01:39:22,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-11-30 01:39:22,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2020-11-30 01:39:22,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-11-30 01:39:22,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 265 transitions. [2020-11-30 01:39:22,889 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 265 transitions. Word has length 71 [2020-11-30 01:39:22,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:39:22,890 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 265 transitions. [2020-11-30 01:39:22,891 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 01:39:22,891 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 265 transitions. [2020-11-30 01:39:22,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-11-30 01:39:22,900 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:39:22,900 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-11-30 01:39:22,900 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 01:39:22,901 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:39:22,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:39:22,903 INFO L82 PathProgramCache]: Analyzing trace with hash -1975141566, now seen corresponding path program 1 times [2020-11-30 01:39:22,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:39:22,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271768017] [2020-11-30 01:39:22,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:39:22,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:39:23,011 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:39:23,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271768017] [2020-11-30 01:39:23,011 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:39:23,012 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 01:39:23,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325850889] [2020-11-30 01:39:23,015 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 01:39:23,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:39:23,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 01:39:23,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:39:23,017 INFO L87 Difference]: Start difference. First operand 145 states and 265 transitions. Second operand 3 states. [2020-11-30 01:39:23,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:39:23,557 INFO L93 Difference]: Finished difference Result 360 states and 654 transitions. [2020-11-30 01:39:23,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 01:39:23,558 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-11-30 01:39:23,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:39:23,561 INFO L225 Difference]: With dead ends: 360 [2020-11-30 01:39:23,561 INFO L226 Difference]: Without dead ends: 216 [2020-11-30 01:39:23,563 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 [2020-11-30 01:39:23,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-11-30 01:39:23,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2020-11-30 01:39:23,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-11-30 01:39:23,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 378 transitions. [2020-11-30 01:39:23,582 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 378 transitions. Word has length 77 [2020-11-30 01:39:23,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:39:23,582 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 378 transitions. [2020-11-30 01:39:23,582 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 01:39:23,582 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 378 transitions. [2020-11-30 01:39:23,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-11-30 01:39:23,585 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:39:23,585 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:39:23,585 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 01:39:23,586 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:39:23,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:39:23,586 INFO L82 PathProgramCache]: Analyzing trace with hash -1832094148, now seen corresponding path program 1 times [2020-11-30 01:39:23,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:39:23,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699615574] [2020-11-30 01:39:23,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:39:23,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:39:23,703 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:39:23,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699615574] [2020-11-30 01:39:23,704 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:39:23,704 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 01:39:23,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010807415] [2020-11-30 01:39:23,705 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 01:39:23,705 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:39:23,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 01:39:23,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:39:23,711 INFO L87 Difference]: Start difference. First operand 216 states and 378 transitions. Second operand 3 states. [2020-11-30 01:39:24,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:39:24,202 INFO L93 Difference]: Finished difference Result 644 states and 1131 transitions. [2020-11-30 01:39:24,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 01:39:24,203 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 78 [2020-11-30 01:39:24,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:39:24,207 INFO L225 Difference]: With dead ends: 644 [2020-11-30 01:39:24,207 INFO L226 Difference]: Without dead ends: 429 [2020-11-30 01:39:24,209 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:39:24,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2020-11-30 01:39:24,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 287. [2020-11-30 01:39:24,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2020-11-30 01:39:24,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 473 transitions. [2020-11-30 01:39:24,238 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 473 transitions. Word has length 78 [2020-11-30 01:39:24,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:39:24,245 INFO L481 AbstractCegarLoop]: Abstraction has 287 states and 473 transitions. [2020-11-30 01:39:24,245 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 01:39:24,245 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 473 transitions. [2020-11-30 01:39:24,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-11-30 01:39:24,248 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:39:24,248 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-11-30 01:39:24,249 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-30 01:39:24,249 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:39:24,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:39:24,249 INFO L82 PathProgramCache]: Analyzing trace with hash 647144157, now seen corresponding path program 1 times [2020-11-30 01:39:24,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:39:24,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371136374] [2020-11-30 01:39:24,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:39:24,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:39:24,345 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:39:24,346 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371136374] [2020-11-30 01:39:24,346 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:39:24,346 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 01:39:24,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608474481] [2020-11-30 01:39:24,347 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 01:39:24,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:39:24,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 01:39:24,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:39:24,348 INFO L87 Difference]: Start difference. First operand 287 states and 473 transitions. Second operand 3 states. [2020-11-30 01:39:24,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:39:24,855 INFO L93 Difference]: Finished difference Result 857 states and 1416 transitions. [2020-11-30 01:39:24,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 01:39:24,855 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 79 [2020-11-30 01:39:24,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:39:24,858 INFO L225 Difference]: With dead ends: 857 [2020-11-30 01:39:24,858 INFO L226 Difference]: Without dead ends: 500 [2020-11-30 01:39:24,861 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 [2020-11-30 01:39:24,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2020-11-30 01:39:24,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 429. [2020-11-30 01:39:24,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2020-11-30 01:39:24,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 591 transitions. [2020-11-30 01:39:24,886 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 591 transitions. Word has length 79 [2020-11-30 01:39:24,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:39:24,887 INFO L481 AbstractCegarLoop]: Abstraction has 429 states and 591 transitions. [2020-11-30 01:39:24,887 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 01:39:24,887 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 591 transitions. [2020-11-30 01:39:24,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-11-30 01:39:24,889 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:39:24,889 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-11-30 01:39:24,889 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-30 01:39:24,889 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:39:24,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:39:24,890 INFO L82 PathProgramCache]: Analyzing trace with hash 102964247, now seen corresponding path program 1 times [2020-11-30 01:39:24,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:39:24,891 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526956032] [2020-11-30 01:39:24,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:39:24,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:39:24,945 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:39:24,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526956032] [2020-11-30 01:39:24,946 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:39:24,946 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 01:39:24,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723037238] [2020-11-30 01:39:24,947 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 01:39:24,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:39:24,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 01:39:24,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:39:24,948 INFO L87 Difference]: Start difference. First operand 429 states and 591 transitions. Second operand 4 states. [2020-11-30 01:39:25,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:39:25,588 INFO L93 Difference]: Finished difference Result 1283 states and 1770 transitions. [2020-11-30 01:39:25,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 01:39:25,589 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 83 [2020-11-30 01:39:25,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:39:25,594 INFO L225 Difference]: With dead ends: 1283 [2020-11-30 01:39:25,594 INFO L226 Difference]: Without dead ends: 855 [2020-11-30 01:39:25,596 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:39:25,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2020-11-30 01:39:25,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 713. [2020-11-30 01:39:25,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 713 states. [2020-11-30 01:39:25,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 918 transitions. [2020-11-30 01:39:25,638 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 918 transitions. Word has length 83 [2020-11-30 01:39:25,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:39:25,639 INFO L481 AbstractCegarLoop]: Abstraction has 713 states and 918 transitions. [2020-11-30 01:39:25,639 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 01:39:25,639 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 918 transitions. [2020-11-30 01:39:25,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-11-30 01:39:25,641 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:39:25,642 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 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] [2020-11-30 01:39:25,643 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-30 01:39:25,643 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:39:25,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:39:25,644 INFO L82 PathProgramCache]: Analyzing trace with hash 128887685, now seen corresponding path program 1 times [2020-11-30 01:39:25,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:39:25,644 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483694610] [2020-11-30 01:39:25,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:39:25,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:39:25,769 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:39:25,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483694610] [2020-11-30 01:39:25,771 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:39:25,771 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 01:39:25,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096171311] [2020-11-30 01:39:25,772 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 01:39:25,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:39:25,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 01:39:25,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:39:25,775 INFO L87 Difference]: Start difference. First operand 713 states and 918 transitions. Second operand 3 states. [2020-11-30 01:39:26,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:39:26,288 INFO L93 Difference]: Finished difference Result 1567 states and 2007 transitions. [2020-11-30 01:39:26,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 01:39:26,289 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 100 [2020-11-30 01:39:26,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:39:26,297 INFO L225 Difference]: With dead ends: 1567 [2020-11-30 01:39:26,298 INFO L226 Difference]: Without dead ends: 855 [2020-11-30 01:39:26,299 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 [2020-11-30 01:39:26,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2020-11-30 01:39:26,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 855. [2020-11-30 01:39:26,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 855 states. [2020-11-30 01:39:26,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1076 transitions. [2020-11-30 01:39:26,335 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1076 transitions. Word has length 100 [2020-11-30 01:39:26,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:39:26,336 INFO L481 AbstractCegarLoop]: Abstraction has 855 states and 1076 transitions. [2020-11-30 01:39:26,342 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 01:39:26,343 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1076 transitions. [2020-11-30 01:39:26,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-11-30 01:39:26,347 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:39:26,348 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 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] [2020-11-30 01:39:26,348 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-30 01:39:26,348 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:39:26,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:39:26,349 INFO L82 PathProgramCache]: Analyzing trace with hash 832576139, now seen corresponding path program 1 times [2020-11-30 01:39:26,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:39:26,349 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880859093] [2020-11-30 01:39:26,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:39:26,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:39:26,492 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:39:26,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880859093] [2020-11-30 01:39:26,492 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:39:26,492 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 01:39:26,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776974658] [2020-11-30 01:39:26,493 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 01:39:26,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:39:26,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 01:39:26,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:39:26,494 INFO L87 Difference]: Start difference. First operand 855 states and 1076 transitions. Second operand 4 states. [2020-11-30 01:39:27,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:39:27,148 INFO L93 Difference]: Finished difference Result 1851 states and 2333 transitions. [2020-11-30 01:39:27,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 01:39:27,150 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 104 [2020-11-30 01:39:27,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:39:27,156 INFO L225 Difference]: With dead ends: 1851 [2020-11-30 01:39:27,157 INFO L226 Difference]: Without dead ends: 997 [2020-11-30 01:39:27,158 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:39:27,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2020-11-30 01:39:27,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 926. [2020-11-30 01:39:27,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 926 states. [2020-11-30 01:39:27,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1151 transitions. [2020-11-30 01:39:27,188 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1151 transitions. Word has length 104 [2020-11-30 01:39:27,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:39:27,188 INFO L481 AbstractCegarLoop]: Abstraction has 926 states and 1151 transitions. [2020-11-30 01:39:27,188 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 01:39:27,188 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1151 transitions. [2020-11-30 01:39:27,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-11-30 01:39:27,191 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:39:27,191 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-11-30 01:39:27,192 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-30 01:39:27,192 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:39:27,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:39:27,192 INFO L82 PathProgramCache]: Analyzing trace with hash 1154614408, now seen corresponding path program 1 times [2020-11-30 01:39:27,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:39:27,194 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860650959] [2020-11-30 01:39:27,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:39:27,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:39:27,336 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:39:27,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860650959] [2020-11-30 01:39:27,336 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:39:27,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 01:39:27,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315629942] [2020-11-30 01:39:27,337 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 01:39:27,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:39:27,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 01:39:27,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:39:27,339 INFO L87 Difference]: Start difference. First operand 926 states and 1151 transitions. Second operand 4 states. [2020-11-30 01:39:28,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:39:28,009 INFO L93 Difference]: Finished difference Result 2135 states and 2641 transitions. [2020-11-30 01:39:28,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 01:39:28,009 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 129 [2020-11-30 01:39:28,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:39:28,016 INFO L225 Difference]: With dead ends: 2135 [2020-11-30 01:39:28,017 INFO L226 Difference]: Without dead ends: 1210 [2020-11-30 01:39:28,018 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:39:28,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2020-11-30 01:39:28,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 997. [2020-11-30 01:39:28,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 997 states. [2020-11-30 01:39:28,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1179 transitions. [2020-11-30 01:39:28,053 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1179 transitions. Word has length 129 [2020-11-30 01:39:28,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:39:28,054 INFO L481 AbstractCegarLoop]: Abstraction has 997 states and 1179 transitions. [2020-11-30 01:39:28,055 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 01:39:28,055 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1179 transitions. [2020-11-30 01:39:28,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-11-30 01:39:28,057 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:39:28,058 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-11-30 01:39:28,058 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-30 01:39:28,060 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:39:28,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:39:28,060 INFO L82 PathProgramCache]: Analyzing trace with hash -1455239494, now seen corresponding path program 1 times [2020-11-30 01:39:28,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:39:28,061 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241053876] [2020-11-30 01:39:28,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:39:28,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:39:28,199 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:39:28,199 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241053876] [2020-11-30 01:39:28,200 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:39:28,200 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 01:39:28,201 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255218403] [2020-11-30 01:39:28,201 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 01:39:28,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:39:28,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 01:39:28,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:39:28,207 INFO L87 Difference]: Start difference. First operand 997 states and 1179 transitions. Second operand 3 states. [2020-11-30 01:39:28,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:39:28,633 INFO L93 Difference]: Finished difference Result 2064 states and 2434 transitions. [2020-11-30 01:39:28,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 01:39:28,633 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 130 [2020-11-30 01:39:28,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:39:28,639 INFO L225 Difference]: With dead ends: 2064 [2020-11-30 01:39:28,639 INFO L226 Difference]: Without dead ends: 1068 [2020-11-30 01:39:28,641 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:39:28,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2020-11-30 01:39:28,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 997. [2020-11-30 01:39:28,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 997 states. [2020-11-30 01:39:28,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1144 transitions. [2020-11-30 01:39:28,671 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1144 transitions. Word has length 130 [2020-11-30 01:39:28,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:39:28,672 INFO L481 AbstractCegarLoop]: Abstraction has 997 states and 1144 transitions. [2020-11-30 01:39:28,672 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 01:39:28,672 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1144 transitions. [2020-11-30 01:39:28,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-11-30 01:39:28,678 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:39:28,679 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-11-30 01:39:28,679 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-30 01:39:28,680 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:39:28,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:39:28,681 INFO L82 PathProgramCache]: Analyzing trace with hash -1200598647, now seen corresponding path program 1 times [2020-11-30 01:39:28,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:39:28,681 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832924283] [2020-11-30 01:39:28,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:39:28,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:39:28,777 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-11-30 01:39:28,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832924283] [2020-11-30 01:39:28,777 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:39:28,777 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 01:39:28,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955406080] [2020-11-30 01:39:28,778 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 01:39:28,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:39:28,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 01:39:28,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:39:28,779 INFO L87 Difference]: Start difference. First operand 997 states and 1144 transitions. Second operand 3 states. [2020-11-30 01:39:29,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:39:29,145 INFO L93 Difference]: Finished difference Result 1993 states and 2287 transitions. [2020-11-30 01:39:29,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 01:39:29,146 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 143 [2020-11-30 01:39:29,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:39:29,149 INFO L225 Difference]: With dead ends: 1993 [2020-11-30 01:39:29,150 INFO L226 Difference]: Without dead ends: 642 [2020-11-30 01:39:29,151 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:39:29,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2020-11-30 01:39:29,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 642. [2020-11-30 01:39:29,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 642 states. [2020-11-30 01:39:29,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 700 transitions. [2020-11-30 01:39:29,169 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 700 transitions. Word has length 143 [2020-11-30 01:39:29,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:39:29,169 INFO L481 AbstractCegarLoop]: Abstraction has 642 states and 700 transitions. [2020-11-30 01:39:29,169 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 01:39:29,169 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 700 transitions. [2020-11-30 01:39:29,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-11-30 01:39:29,172 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:39:29,172 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:39:29,173 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-30 01:39:29,173 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:39:29,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:39:29,173 INFO L82 PathProgramCache]: Analyzing trace with hash -1976364695, now seen corresponding path program 1 times [2020-11-30 01:39:29,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:39:29,174 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631945205] [2020-11-30 01:39:29,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:39:29,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:39:29,541 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 121 proven. 64 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-11-30 01:39:29,542 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631945205] [2020-11-30 01:39:29,542 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [403885832] [2020-11-30 01:39:29,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e9d3ddb9-0bf3-4e6b-92e2-6e2c83630b4e/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 [2020-11-30 01:39:29,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:39:29,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 01:39:29,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:39:29,941 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-11-30 01:39:29,942 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:39:30,036 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-11-30 01:39:30,037 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-30 01:39:30,037 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 7 [2020-11-30 01:39:30,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925043489] [2020-11-30 01:39:30,038 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 01:39:30,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:39:30,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 01:39:30,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-11-30 01:39:30,040 INFO L87 Difference]: Start difference. First operand 642 states and 700 transitions. Second operand 4 states. [2020-11-30 01:39:30,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:39:30,705 INFO L93 Difference]: Finished difference Result 1707 states and 1841 transitions. [2020-11-30 01:39:30,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 01:39:30,706 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 194 [2020-11-30 01:39:30,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:39:30,706 INFO L225 Difference]: With dead ends: 1707 [2020-11-30 01:39:30,707 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 01:39:30,709 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 391 GetRequests, 386 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-11-30 01:39:30,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 01:39:30,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 01:39:30,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 01:39:30,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 01:39:30,710 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 194 [2020-11-30 01:39:30,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:39:30,710 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 01:39:30,710 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 01:39:30,711 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 01:39:30,711 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 01:39:30,911 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-11-30 01:39:30,913 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-30 01:39:31,250 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 33 [2020-11-30 01:39:31,464 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 33 [2020-11-30 01:39:31,468 INFO L274 CegarLoopResult]: For program point L102(lines 102 400) no Hoare annotation was computed. [2020-11-30 01:39:31,469 INFO L274 CegarLoopResult]: For program point L598(line 598) no Hoare annotation was computed. [2020-11-30 01:39:31,469 INFO L274 CegarLoopResult]: For program point L334(lines 334 400) no Hoare annotation was computed. [2020-11-30 01:39:31,469 INFO L274 CegarLoopResult]: For program point L302(lines 302 400) no Hoare annotation was computed. [2020-11-30 01:39:31,469 INFO L274 CegarLoopResult]: For program point L170(lines 170 400) no Hoare annotation was computed. [2020-11-30 01:39:31,469 INFO L274 CegarLoopResult]: For program point L204(lines 204 400) no Hoare annotation was computed. [2020-11-30 01:39:31,469 INFO L274 CegarLoopResult]: For program point L72(lines 72 400) no Hoare annotation was computed. [2020-11-30 01:39:31,469 INFO L274 CegarLoopResult]: For program point L271(lines 271 400) no Hoare annotation was computed. [2020-11-30 01:39:31,469 INFO L274 CegarLoopResult]: For program point L139(lines 139 400) no Hoare annotation was computed. [2020-11-30 01:39:31,469 INFO L274 CegarLoopResult]: For program point L371(lines 371 400) no Hoare annotation was computed. [2020-11-30 01:39:31,469 INFO L274 CegarLoopResult]: For program point L107(lines 107 400) no Hoare annotation was computed. [2020-11-30 01:39:31,469 INFO L274 CegarLoopResult]: For program point L41(lines 41 400) no Hoare annotation was computed. [2020-11-30 01:39:31,469 INFO L274 CegarLoopResult]: For program point L339(lines 339 400) no Hoare annotation was computed. [2020-11-30 01:39:31,469 INFO L274 CegarLoopResult]: For program point L207(lines 207 400) no Hoare annotation was computed. [2020-11-30 01:39:31,470 INFO L274 CegarLoopResult]: For program point L75(lines 75 400) no Hoare annotation was computed. [2020-11-30 01:39:31,470 INFO L274 CegarLoopResult]: For program point L373(lines 373 400) no Hoare annotation was computed. [2020-11-30 01:39:31,470 INFO L274 CegarLoopResult]: For program point L241(lines 241 400) no Hoare annotation was computed. [2020-11-30 01:39:31,470 INFO L274 CegarLoopResult]: For program point L175(lines 175 400) no Hoare annotation was computed. [2020-11-30 01:39:31,470 INFO L274 CegarLoopResult]: For program point L275(lines 275 400) no Hoare annotation was computed. [2020-11-30 01:39:31,470 INFO L274 CegarLoopResult]: For program point L375(lines 375 400) no Hoare annotation was computed. [2020-11-30 01:39:31,470 INFO L274 CegarLoopResult]: For program point L309(lines 309 400) no Hoare annotation was computed. [2020-11-30 01:39:31,470 INFO L274 CegarLoopResult]: For program point L45(lines 45 400) no Hoare annotation was computed. [2020-11-30 01:39:31,470 INFO L274 CegarLoopResult]: For program point L343(lines 343 400) no Hoare annotation was computed. [2020-11-30 01:39:31,470 INFO L274 CegarLoopResult]: For program point L112(lines 112 400) no Hoare annotation was computed. [2020-11-30 01:39:31,470 INFO L274 CegarLoopResult]: For program point L278(lines 278 400) no Hoare annotation was computed. [2020-11-30 01:39:31,470 INFO L274 CegarLoopResult]: For program point L146(lines 146 400) no Hoare annotation was computed. [2020-11-30 01:39:31,470 INFO L274 CegarLoopResult]: For program point L213(lines 213 400) no Hoare annotation was computed. [2020-11-30 01:39:31,470 INFO L274 CegarLoopResult]: For program point L82(lines 82 400) no Hoare annotation was computed. [2020-11-30 01:39:31,471 INFO L274 CegarLoopResult]: For program point L347(lines 347 400) no Hoare annotation was computed. [2020-11-30 01:39:31,471 INFO L274 CegarLoopResult]: For program point L248(lines 248 400) no Hoare annotation was computed. [2020-11-30 01:39:31,471 INFO L274 CegarLoopResult]: For program point L183(lines 183 400) no Hoare annotation was computed. [2020-11-30 01:39:31,471 INFO L274 CegarLoopResult]: For program point L150(lines 150 400) no Hoare annotation was computed. [2020-11-30 01:39:31,471 INFO L274 CegarLoopResult]: For program point L382(lines 382 400) no Hoare annotation was computed. [2020-11-30 01:39:31,471 INFO L274 CegarLoopResult]: For program point L316(lines 316 400) no Hoare annotation was computed. [2020-11-30 01:39:31,471 INFO L274 CegarLoopResult]: For program point L283(lines 283 400) no Hoare annotation was computed. [2020-11-30 01:39:31,471 INFO L274 CegarLoopResult]: For program point L118(lines 118 400) no Hoare annotation was computed. [2020-11-30 01:39:31,471 INFO L274 CegarLoopResult]: For program point L449-1(lines 40 585) no Hoare annotation was computed. [2020-11-30 01:39:31,471 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-30 01:39:31,471 INFO L274 CegarLoopResult]: For program point L218(lines 218 400) no Hoare annotation was computed. [2020-11-30 01:39:31,471 INFO L274 CegarLoopResult]: For program point L53(lines 53 400) no Hoare annotation was computed. [2020-11-30 01:39:31,471 INFO L274 CegarLoopResult]: For program point L154(lines 154 400) no Hoare annotation was computed. [2020-11-30 01:39:31,472 INFO L270 CegarLoopResult]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse5 (= ~a7~0 1)) (.cse9 (= ~a20~0 1))) (let ((.cse6 (<= ~a8~0 13)) (.cse8 (= ~a21~0 1)) (.cse2 (= ~a17~0 1)) (.cse3 (<= ~a16~0 5)) (.cse4 (not .cse9)) (.cse0 (not .cse5)) (.cse1 (<= 5 ~a16~0)) (.cse7 (= ~a17~0 0))) (or (and .cse0 .cse1 .cse2) (and .cse3 .cse4 .cse2) (and .cse5 .cse6 .cse7) (and .cse5 .cse3 .cse2 .cse6) (and .cse3 .cse4 .cse7) (and .cse5 .cse8 .cse9) (and .cse8 .cse9 .cse7) (and (< ~a8~0 15) .cse8 .cse9 .cse2) (and .cse5 .cse3 .cse4) (and .cse0 .cse1 .cse7)))) [2020-11-30 01:39:31,472 INFO L274 CegarLoopResult]: For program point L452-1(lines 40 585) no Hoare annotation was computed. [2020-11-30 01:39:31,472 INFO L274 CegarLoopResult]: For program point L188(lines 188 400) no Hoare annotation was computed. [2020-11-30 01:39:31,472 INFO L274 CegarLoopResult]: For program point L453(line 453) no Hoare annotation was computed. [2020-11-30 01:39:31,472 INFO L274 CegarLoopResult]: For program point L387(lines 387 400) no Hoare annotation was computed. [2020-11-30 01:39:31,472 INFO L274 CegarLoopResult]: For program point L288(lines 288 400) no Hoare annotation was computed. [2020-11-30 01:39:31,472 INFO L274 CegarLoopResult]: For program point L255(lines 255 400) no Hoare annotation was computed. [2020-11-30 01:39:31,472 INFO L274 CegarLoopResult]: For program point L90(lines 90 400) no Hoare annotation was computed. [2020-11-30 01:39:31,472 INFO L274 CegarLoopResult]: For program point L355(lines 355 400) no Hoare annotation was computed. [2020-11-30 01:39:31,473 INFO L274 CegarLoopResult]: For program point L322(lines 322 400) no Hoare annotation was computed. [2020-11-30 01:39:31,473 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-30 01:39:31,473 INFO L274 CegarLoopResult]: For program point L124(lines 124 400) no Hoare annotation was computed. [2020-11-30 01:39:31,473 INFO L277 CegarLoopResult]: At program point L587(lines 587 604) the Hoare annotation is: true [2020-11-30 01:39:31,473 INFO L274 CegarLoopResult]: For program point L224(lines 224 400) no Hoare annotation was computed. [2020-11-30 01:39:31,473 INFO L274 CegarLoopResult]: For program point L158(lines 158 400) no Hoare annotation was computed. [2020-11-30 01:39:31,473 INFO L274 CegarLoopResult]: For program point L59(lines 59 400) no Hoare annotation was computed. [2020-11-30 01:39:31,476 INFO L274 CegarLoopResult]: For program point L94(lines 94 400) no Hoare annotation was computed. [2020-11-30 01:39:31,476 INFO L274 CegarLoopResult]: For program point L392(lines 392 400) no Hoare annotation was computed. [2020-11-30 01:39:31,476 INFO L274 CegarLoopResult]: For program point L326(lines 326 400) no Hoare annotation was computed. [2020-11-30 01:39:31,476 INFO L274 CegarLoopResult]: For program point L260(lines 260 400) no Hoare annotation was computed. [2020-11-30 01:39:31,476 INFO L274 CegarLoopResult]: For program point L228(lines 228 400) no Hoare annotation was computed. [2020-11-30 01:39:31,477 INFO L274 CegarLoopResult]: For program point L162(lines 162 400) no Hoare annotation was computed. [2020-11-30 01:39:31,477 INFO L274 CegarLoopResult]: For program point L129(lines 129 400) no Hoare annotation was computed. [2020-11-30 01:39:31,477 INFO L274 CegarLoopResult]: For program point L328(lines 328 400) no Hoare annotation was computed. [2020-11-30 01:39:31,477 INFO L274 CegarLoopResult]: For program point L196(lines 196 400) no Hoare annotation was computed. [2020-11-30 01:39:31,477 INFO L274 CegarLoopResult]: For program point L64(lines 64 400) no Hoare annotation was computed. [2020-11-30 01:39:31,477 INFO L270 CegarLoopResult]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse5 (= ~a7~0 1)) (.cse9 (= ~a20~0 1))) (let ((.cse6 (<= ~a8~0 13)) (.cse8 (= ~a21~0 1)) (.cse2 (= ~a17~0 1)) (.cse3 (<= ~a16~0 5)) (.cse4 (not .cse9)) (.cse0 (not .cse5)) (.cse1 (<= 5 ~a16~0)) (.cse7 (= ~a17~0 0))) (or (and .cse0 .cse1 .cse2) (and .cse3 .cse4 .cse2) (and .cse5 .cse6 .cse7) (and .cse5 .cse3 .cse2 .cse6) (and .cse3 .cse4 .cse7) (and .cse5 .cse8 .cse9) (and .cse8 .cse9 .cse7) (and (< ~a8~0 15) .cse8 .cse9 .cse2) (and .cse5 .cse3 .cse4) (and .cse0 .cse1 .cse7)))) [2020-11-30 01:39:31,477 INFO L274 CegarLoopResult]: For program point L296(lines 296 400) no Hoare annotation was computed. [2020-11-30 01:39:31,477 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-30 01:39:31,478 INFO L274 CegarLoopResult]: For program point L363(lines 363 400) no Hoare annotation was computed. [2020-11-30 01:39:31,478 INFO L274 CegarLoopResult]: For program point L199(lines 199 400) no Hoare annotation was computed. [2020-11-30 01:39:31,478 INFO L274 CegarLoopResult]: For program point L365(lines 365 400) no Hoare annotation was computed. [2020-11-30 01:39:31,478 INFO L274 CegarLoopResult]: For program point L266(lines 266 400) no Hoare annotation was computed. [2020-11-30 01:39:31,478 INFO L274 CegarLoopResult]: For program point L233(lines 233 400) no Hoare annotation was computed. [2020-11-30 01:39:31,478 INFO L274 CegarLoopResult]: For program point L134(lines 134 400) no Hoare annotation was computed. [2020-11-30 01:39:31,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 01:39:31 BoogieIcfgContainer [2020-11-30 01:39:31,499 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 01:39:31,500 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 01:39:31,500 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 01:39:31,500 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 01:39:31,500 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:39:21" (3/4) ... [2020-11-30 01:39:31,504 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-30 01:39:31,536 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 102 nodes and edges [2020-11-30 01:39:31,537 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2020-11-30 01:39:31,539 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-11-30 01:39:31,541 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-11-30 01:39:31,714 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_e9d3ddb9-0bf3-4e6b-92e2-6e2c83630b4e/bin/utaipan/witness.graphml [2020-11-30 01:39:31,714 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 01:39:31,715 INFO L168 Benchmark]: Toolchain (without parser) took 13643.38 ms. Allocated memory was 102.8 MB in the beginning and 270.5 MB in the end (delta: 167.8 MB). Free memory was 73.2 MB in the beginning and 123.2 MB in the end (delta: -50.0 MB). Peak memory consumption was 118.3 MB. Max. memory is 16.1 GB. [2020-11-30 01:39:31,716 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 102.8 MB. Free memory is still 59.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:39:31,716 INFO L168 Benchmark]: CACSL2BoogieTranslator took 735.36 ms. Allocated memory is still 102.8 MB. Free memory was 72.9 MB in the beginning and 62.3 MB in the end (delta: 10.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-30 01:39:31,716 INFO L168 Benchmark]: Boogie Procedure Inliner took 131.11 ms. Allocated memory is still 102.8 MB. Free memory was 62.3 MB in the beginning and 56.5 MB in the end (delta: 5.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-30 01:39:31,717 INFO L168 Benchmark]: Boogie Preprocessor took 111.00 ms. Allocated memory is still 102.8 MB. Free memory was 56.5 MB in the beginning and 51.9 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-30 01:39:31,717 INFO L168 Benchmark]: RCFGBuilder took 2437.88 ms. Allocated memory was 102.8 MB in the beginning and 136.3 MB in the end (delta: 33.6 MB). Free memory was 51.9 MB in the beginning and 46.8 MB in the end (delta: 5.2 MB). Peak memory consumption was 61.5 MB. Max. memory is 16.1 GB. [2020-11-30 01:39:31,718 INFO L168 Benchmark]: TraceAbstraction took 10006.19 ms. Allocated memory was 136.3 MB in the beginning and 270.5 MB in the end (delta: 134.2 MB). Free memory was 46.8 MB in the beginning and 138.9 MB in the end (delta: -92.2 MB). Peak memory consumption was 41.0 MB. Max. memory is 16.1 GB. [2020-11-30 01:39:31,718 INFO L168 Benchmark]: Witness Printer took 214.73 ms. Allocated memory is still 270.5 MB. Free memory was 138.9 MB in the beginning and 123.2 MB in the end (delta: 15.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-30 01:39:31,720 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 102.8 MB. Free memory is still 59.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 735.36 ms. Allocated memory is still 102.8 MB. Free memory was 72.9 MB in the beginning and 62.3 MB in the end (delta: 10.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 131.11 ms. Allocated memory is still 102.8 MB. Free memory was 62.3 MB in the beginning and 56.5 MB in the end (delta: 5.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 111.00 ms. Allocated memory is still 102.8 MB. Free memory was 56.5 MB in the beginning and 51.9 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2437.88 ms. Allocated memory was 102.8 MB in the beginning and 136.3 MB in the end (delta: 33.6 MB). Free memory was 51.9 MB in the beginning and 46.8 MB in the end (delta: 5.2 MB). Peak memory consumption was 61.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 10006.19 ms. Allocated memory was 136.3 MB in the beginning and 270.5 MB in the end (delta: 134.2 MB). Free memory was 46.8 MB in the beginning and 138.9 MB in the end (delta: -92.2 MB). Peak memory consumption was 41.0 MB. Max. memory is 16.1 GB. * Witness Printer took 214.73 ms. Allocated memory is still 270.5 MB. Free memory was 138.9 MB in the beginning and 123.2 MB in the end (delta: 15.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: ((((((((((!(a7 == 1) && 5 <= a16) && a17 == 1) || ((a16 <= 5 && !(a20 == 1)) && a17 == 1)) || ((a7 == 1 && a8 <= 13) && a17 == 0)) || (((a7 == 1 && a16 <= 5) && a17 == 1) && a8 <= 13)) || ((a16 <= 5 && !(a20 == 1)) && a17 == 0)) || ((a7 == 1 && a21 == 1) && a20 == 1)) || ((a21 == 1 && a20 == 1) && a17 == 0)) || (((a8 < 15 && a21 == 1) && a20 == 1) && a17 == 1)) || ((a7 == 1 && a16 <= 5) && !(a20 == 1))) || ((!(a7 == 1) && 5 <= a16) && a17 == 0) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: ((((((((((!(a7 == 1) && 5 <= a16) && a17 == 1) || ((a16 <= 5 && !(a20 == 1)) && a17 == 1)) || ((a7 == 1 && a8 <= 13) && a17 == 0)) || (((a7 == 1 && a16 <= 5) && a17 == 1) && a8 <= 13)) || ((a16 <= 5 && !(a20 == 1)) && a17 == 0)) || ((a7 == 1 && a21 == 1) && a20 == 1)) || ((a21 == 1 && a20 == 1) && a17 == 0)) || (((a8 < 15 && a21 == 1) && a20 == 1) && a17 == 1)) || ((a7 == 1 && a16 <= 5) && !(a20 == 1))) || ((!(a7 == 1) && 5 <= a16) && a17 == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 9.3s, OverallIterations: 11, TraceHistogramMax: 5, AutomataDifference: 6.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 586 SDtfs, 792 SDslu, 55 SDs, 0 SdLazy, 2667 SolverSat, 611 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 418 GetRequests, 400 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=997occurred 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: 0.3s AutomataMinimizationTime, 11 MinimizatonAttempts, 710 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 47 NumberOfFragments, 225 HoareAnnotationTreeSize, 3 FomulaSimplifications, 3030 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 3 FomulaSimplificationsInter, 222 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 1382 NumberOfCodeBlocks, 1382 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 1563 ConstructedInterpolants, 0 QuantifiedInterpolants, 772445 SizeOfPredicates, 1 NumberOfNonLiveVariables, 415 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 13 InterpolantComputations, 12 PerfectInterpolantSequences, 894/958 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...